github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-24 12:15:52 +00:00
Code Issues Projects Releases Wiki Activity

Split the Kubelet flag options and struct

Browse Source 
Reduces the size of the app/server.go file and ensures that the flags
and their defaults are clearly separated.
This commit is contained in:
Clayton Coleman 2015-12-24 18:46:56 -05:00
parent b1e4831265
commit 791d160b42
21 changed files with 410 additions and 358 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
cmd/hyperkube/kubelet.go
View File

@ -17,13 +17,14 @@ limitations under the License.
package main
import (
kubeletapp "k8s.io/kubernetes/cmd/kubelet/app"
"k8s.io/kubernetes/cmd/kubelet/app"
"k8s.io/kubernetes/cmd/kubelet/app/options"
)
// NewKubelet creates a new hyperkube Server object that includes the
// description and flags.
func NewKubelet() *Server {
s := kubeletapp.NewKubeletServer()
s := options.NewKubeletServer()
hks := Server{
SimpleUsage: "kubelet",
Long: `The kubelet binary is responsible for maintaining a set of containers on a
@ -33,7 +34,7 @@ func NewKubelet() *Server {
configuration data, with the running set of containers by starting or stopping
Docker containers.`,
Run: func(_ *Server, _ []string) error {
return s.Run(nil)
return app.Run(s, nil)
},
}
s.AddFlags(hks.Flags())

280
cmd/kubelet/app/options/options.go Normal file
View File

@ -0,0 +1,280 @@
/*
Copyright 2015 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Package options contains all of the primary arguments for a kubelet.
package options
import (
"net"
_ "net/http/pprof"
"time"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/kubelet/qos"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
"k8s.io/kubernetes/pkg/master/ports"
"k8s.io/kubernetes/pkg/util"
"github.com/spf13/pflag"
)
const (
defaultRootDir = "/var/lib/kubelet"
experimentalFlannelOverlay = false
)
// KubeletServer encapsulates all of the parameters necessary for starting up
// a kubelet. These can either be set via command line or directly.
type KubeletServer struct {
Address net.IP
AllowPrivileged bool
APIServerList []string
AuthPath util.StringFlag // Deprecated -- use KubeConfig instead
CAdvisorPort uint
CertDirectory string
CgroupRoot string
CloudConfigFile string
CloudProvider string
ClusterDNS net.IP
ClusterDomain string
Config string
ConfigureCBR0 bool
ContainerRuntime string
CPUCFSQuota bool
DockerDaemonContainer string
DockerEndpoint string
DockerExecHandlerName string
EnableDebuggingHandlers bool
EnableServer bool
EventBurst int
EventRecordQPS float32
FileCheckFrequency time.Duration
HealthzBindAddress net.IP
HealthzPort int
HostnameOverride string
HostNetworkSources string
HostPIDSources string
HostIPCSources string
HTTPCheckFrequency time.Duration
ImageGCHighThresholdPercent int
ImageGCLowThresholdPercent int
KubeConfig util.StringFlag
LowDiskSpaceThresholdMB int
ManifestURL string
ManifestURLHeader string
MasterServiceNamespace string
MaxContainerCount int
MaxOpenFiles uint64
MaxPerPodContainerCount int
MaxPods int
MinimumGCAge time.Duration
NetworkPluginDir string
NetworkPluginName string
VolumePluginDir string
NodeLabels []string
NodeLabelsFile string
NodeStatusUpdateFrequency time.Duration
OOMScoreAdj int
PodCIDR string
PodInfraContainerImage string
Port uint
ReadOnlyPort uint
RegisterNode bool
RegisterSchedulable bool
RegistryBurst int
RegistryPullQPS float64
ResolverConfig string
ResourceContainer string
RktPath string
RktStage1Image string
RootDirectory string
RunOnce bool
StandaloneMode bool
StreamingConnectionIdleTimeout time.Duration
SyncFrequency time.Duration
SystemContainer string
TLSCertFile string
TLSPrivateKeyFile string
ReconcileCIDR bool
// Flags intended for testing
// Is the kubelet containerized?
Containerized bool
// Insert a probability of random errors during calls to the master.
ChaosChance float64
// Crash immediately, rather than eating panics.
ReallyCrashForTesting bool
KubeAPIQPS float32
KubeAPIBurst int
// Pull images one at a time.
SerializeImagePulls bool
ExperimentalFlannelOverlay bool
OutOfDiskTransitionFrequency time.Duration
NodeIP net.IP
}
// NewKubeletServer will create a new KubeletServer with default values.
func NewKubeletServer() *KubeletServer {
return &KubeletServer{
Address: net.ParseIP("0.0.0.0"),
AuthPath: util.NewStringFlag("/var/lib/kubelet/kubernetes_auth"), // deprecated
CAdvisorPort: 4194,
CertDirectory: "/var/run/kubernetes",
CgroupRoot: "",
ConfigureCBR0: false,
ContainerRuntime: "docker",
CPUCFSQuota: false,
DockerDaemonContainer: "/docker-daemon",
DockerExecHandlerName: "native",
EventBurst: 10,
EventRecordQPS: 5.0,
EnableDebuggingHandlers: true,
EnableServer: true,
FileCheckFrequency: 20 * time.Second,
HealthzBindAddress: net.ParseIP("127.0.0.1"),
HealthzPort: 10248,
HostNetworkSources: kubetypes.AllSource,
HostPIDSources: kubetypes.AllSource,
HostIPCSources: kubetypes.AllSource,
HTTPCheckFrequency: 20 * time.Second,
ImageGCHighThresholdPercent: 90,
ImageGCLowThresholdPercent: 80,
KubeConfig: util.NewStringFlag("/var/lib/kubelet/kubeconfig"),
LowDiskSpaceThresholdMB: 256,
MasterServiceNamespace: api.NamespaceDefault,
MaxContainerCount: 100,
MaxPerPodContainerCount: 2,
MaxOpenFiles: 1000000,
MaxPods: 40,
MinimumGCAge: 1 * time.Minute,
NetworkPluginDir: "/usr/libexec/kubernetes/kubelet-plugins/net/exec/",
NetworkPluginName: "",
VolumePluginDir: "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/",
NodeLabels: []string{},
NodeLabelsFile: "",
NodeStatusUpdateFrequency: 10 * time.Second,
OOMScoreAdj: qos.KubeletOOMScoreAdj,
PodInfraContainerImage: kubetypes.PodInfraContainerImage,
Port: ports.KubeletPort,
ReadOnlyPort: ports.KubeletReadOnlyPort,
RegisterNode: true, // will be ignored if no apiserver is configured
RegisterSchedulable: true,
RegistryBurst: 10,
RegistryPullQPS: 5.0,
ResourceContainer: "/kubelet",
RktPath: "",
RktStage1Image: "",
RootDirectory: defaultRootDir,
SerializeImagePulls: true,
StreamingConnectionIdleTimeout: 5 * time.Minute,
SyncFrequency: 1 * time.Minute,
SystemContainer: "",
ReconcileCIDR: true,
KubeAPIQPS: 5.0,
KubeAPIBurst: 10,
ExperimentalFlannelOverlay: experimentalFlannelOverlay,
OutOfDiskTransitionFrequency: 5 * time.Minute,
}
}
// AddFlags adds flags for a specific KubeletServer to the specified FlagSet
func (s *KubeletServer) AddFlags(fs *pflag.FlagSet) {
fs.StringVar(&s.Config, "config", s.Config, "Path to the config file or directory of files")
fs.DurationVar(&s.SyncFrequency, "sync-frequency", s.SyncFrequency, "Max period between synchronizing running containers and config")
fs.DurationVar(&s.FileCheckFrequency, "file-check-frequency", s.FileCheckFrequency, "Duration between checking config files for new data")
fs.DurationVar(&s.HTTPCheckFrequency, "http-check-frequency", s.HTTPCheckFrequency, "Duration between checking http for new data")
fs.StringVar(&s.ManifestURL, "manifest-url", s.ManifestURL, "URL for accessing the container manifest")
fs.StringVar(&s.ManifestURLHeader, "manifest-url-header", s.ManifestURLHeader, "HTTP header to use when accessing the manifest URL, with the key separated from the value with a ':', as in 'key:value'")
fs.BoolVar(&s.EnableServer, "enable-server", s.EnableServer, "Enable the Kubelet's server")
fs.IPVar(&s.Address, "address", s.Address, "The IP address for the Kubelet to serve on (set to 0.0.0.0 for all interfaces)")
fs.UintVar(&s.Port, "port", s.Port, "The port for the Kubelet to serve on.")
fs.UintVar(&s.ReadOnlyPort, "read-only-port", s.ReadOnlyPort, "The read-only port for the Kubelet to serve on with no authentication/authorization (set to 0 to disable)")
fs.StringVar(&s.TLSCertFile, "tls-cert-file", s.TLSCertFile, ""+
"File containing x509 Certificate for HTTPS. (CA cert, if any, concatenated after server cert). "+
"If --tls-cert-file and --tls-private-key-file are not provided, a self-signed certificate and key "+
"are generated for the public address and saved to the directory passed to --cert-dir.")
fs.StringVar(&s.TLSPrivateKeyFile, "tls-private-key-file", s.TLSPrivateKeyFile, "File containing x509 private key matching --tls-cert-file.")
fs.StringVar(&s.CertDirectory, "cert-dir", s.CertDirectory, "The directory where the TLS certs are located (by default /var/run/kubernetes). "+
"If --tls-cert-file and --tls-private-key-file are provided, this flag will be ignored.")
fs.StringVar(&s.HostnameOverride, "hostname-override", s.HostnameOverride, "If non-empty, will use this string as identification instead of the actual hostname.")
fs.StringVar(&s.PodInfraContainerImage, "pod-infra-container-image", s.PodInfraContainerImage, "The image whose network/ipc namespaces containers in each pod will use.")
fs.StringVar(&s.DockerEndpoint, "docker-endpoint", s.DockerEndpoint, "If non-empty, use this for the docker endpoint to communicate with")
fs.StringVar(&s.RootDirectory, "root-dir", s.RootDirectory, "Directory path for managing kubelet files (volume mounts,etc).")
fs.BoolVar(&s.AllowPrivileged, "allow-privileged", s.AllowPrivileged, "If true, allow containers to request privileged mode. [default=false]")
fs.StringVar(&s.HostNetworkSources, "host-network-sources", s.HostNetworkSources, "Comma-separated list of sources from which the Kubelet allows pods to use of host network. [default=\"*\"]")
fs.StringVar(&s.HostPIDSources, "host-pid-sources", s.HostPIDSources, "Comma-separated list of sources from which the Kubelet allows pods to use the host pid namespace. [default=\"*\"]")
fs.StringVar(&s.HostIPCSources, "host-ipc-sources", s.HostIPCSources, "Comma-separated list of sources from which the Kubelet allows pods to use the host ipc namespace. [default=\"*\"]")
fs.Float64Var(&s.RegistryPullQPS, "registry-qps", s.RegistryPullQPS, "If > 0, limit registry pull QPS to this value. If 0, unlimited. [default=5.0]")
fs.IntVar(&s.RegistryBurst, "registry-burst", s.RegistryBurst, "Maximum size of a bursty pulls, temporarily allows pulls to burst to this number, while still not exceeding registry-qps. Only used if --registry-qps > 0")
fs.Float32Var(&s.EventRecordQPS, "event-qps", s.EventRecordQPS, "If > 0, limit event creations per second to this value. If 0, unlimited.")
fs.IntVar(&s.EventBurst, "event-burst", s.EventBurst, "Maximum size of a bursty event records, temporarily allows event records to burst to this number, while still not exceeding event-qps. Only used if --event-qps > 0")
fs.BoolVar(&s.RunOnce, "runonce", s.RunOnce, "If true, exit after spawning pods from local manifests or remote urls. Exclusive with --api-servers, and --enable-server")
fs.BoolVar(&s.EnableDebuggingHandlers, "enable-debugging-handlers", s.EnableDebuggingHandlers, "Enables server endpoints for log collection and local running of containers and commands")
fs.DurationVar(&s.MinimumGCAge, "minimum-container-ttl-duration", s.MinimumGCAge, "Minimum age for a finished container before it is garbage collected. Examples: '300ms', '10s' or '2h45m'")
fs.IntVar(&s.MaxPerPodContainerCount, "maximum-dead-containers-per-container", s.MaxPerPodContainerCount, "Maximum number of old instances to retain per container. Each container takes up some disk space. Default: 2.")
fs.IntVar(&s.MaxContainerCount, "maximum-dead-containers", s.MaxContainerCount, "Maximum number of old instances of containers to retain globally. Each container takes up some disk space. Default: 100.")
fs.Var(&s.AuthPath, "auth-path", "Path to .kubernetes_auth file, specifying how to authenticate to API server.")
fs.MarkDeprecated("auth-path", "will be removed in a future version")
fs.Var(&s.KubeConfig, "kubeconfig", "Path to a kubeconfig file, specifying how to authenticate to API server (the master location is set by the api-servers flag).")
fs.UintVar(&s.CAdvisorPort, "cadvisor-port", s.CAdvisorPort, "The port of the localhost cAdvisor endpoint")
fs.IntVar(&s.HealthzPort, "healthz-port", s.HealthzPort, "The port of the localhost healthz endpoint")
fs.IPVar(&s.HealthzBindAddress, "healthz-bind-address", s.HealthzBindAddress, "The IP address for the healthz server to serve on, defaulting to 127.0.0.1 (set to 0.0.0.0 for all interfaces)")
fs.IntVar(&s.OOMScoreAdj, "oom-score-adj", s.OOMScoreAdj, "The oom-score-adj value for kubelet process. Values must be within the range [-1000, 1000]")
fs.StringSliceVar(&s.APIServerList, "api-servers", []string{}, "List of Kubernetes API servers for publishing events, and reading pods and services. (ip:port), comma separated.")
fs.BoolVar(&s.RegisterNode, "register-node", s.RegisterNode, "Register the node with the apiserver (defaults to true if --api-servers is set)")
fs.StringVar(&s.ClusterDomain, "cluster-domain", s.ClusterDomain, "Domain for this cluster. If set, kubelet will configure all containers to search this domain in addition to the host's search domains")
fs.StringVar(&s.MasterServiceNamespace, "master-service-namespace", s.MasterServiceNamespace, "The namespace from which the kubernetes master services should be injected into pods")
fs.IPVar(&s.ClusterDNS, "cluster-dns", s.ClusterDNS, "IP address for a cluster DNS server. If set, kubelet will configure all containers to use this for DNS resolution in addition to the host's DNS servers")
fs.DurationVar(&s.StreamingConnectionIdleTimeout, "streaming-connection-idle-timeout", s.StreamingConnectionIdleTimeout, "Maximum time a streaming connection can be idle before the connection is automatically closed. Example: '5m'")
fs.StringSliceVar(&s.NodeLabels, "node-label", []string{}, "add labels when registering the node in the cluster, the flag can be used multiple times (key=value)")
fs.StringVar(&s.NodeLabelsFile, "node-labels-file", "", "the path to a yaml or json file containing a series of key pair labels to apply on node registration")
fs.DurationVar(&s.NodeStatusUpdateFrequency, "node-status-update-frequency", s.NodeStatusUpdateFrequency, "Specifies how often kubelet posts node status to master. Note: be cautious when changing the constant, it must work with nodeMonitorGracePeriod in nodecontroller. Default: 10s")
fs.IntVar(&s.ImageGCHighThresholdPercent, "image-gc-high-threshold", s.ImageGCHighThresholdPercent, "The percent of disk usage after which image garbage collection is always run. Default: 90%")
fs.IntVar(&s.ImageGCLowThresholdPercent, "image-gc-low-threshold", s.ImageGCLowThresholdPercent, "The percent of disk usage before which image garbage collection is never run. Lowest disk usage to garbage collect to. Default: 80%")
fs.IntVar(&s.LowDiskSpaceThresholdMB, "low-diskspace-threshold-mb", s.LowDiskSpaceThresholdMB, "The absolute free disk space, in MB, to maintain. When disk space falls below this threshold, new pods would be rejected. Default: 256")
fs.StringVar(&s.NetworkPluginName, "network-plugin", s.NetworkPluginName, "<Warning: Alpha feature> The name of the network plugin to be invoked for various events in kubelet/pod lifecycle")
fs.StringVar(&s.NetworkPluginDir, "network-plugin-dir", s.NetworkPluginDir, "<Warning: Alpha feature> The full path of the directory in which to search for network plugins")
fs.StringVar(&s.VolumePluginDir, "volume-plugin-dir", s.VolumePluginDir, "<Warning: Alpha feature> The full path of the directory in which to search for additional third party volume plugins")
fs.StringVar(&s.CloudProvider, "cloud-provider", s.CloudProvider, "The provider for cloud services. Empty string for no provider.")
fs.StringVar(&s.CloudConfigFile, "cloud-config", s.CloudConfigFile, "The path to the cloud provider configuration file. Empty string for no configuration file.")
fs.StringVar(&s.ResourceContainer, "resource-container", s.ResourceContainer, "Absolute name of the resource-only container to create and run the Kubelet in (Default: /kubelet).")
fs.StringVar(&s.CgroupRoot, "cgroup-root", s.CgroupRoot, "Optional root cgroup to use for pods. This is handled by the container runtime on a best effort basis. Default: '', which means use the container runtime default.")
fs.StringVar(&s.ContainerRuntime, "container-runtime", s.ContainerRuntime, "The container runtime to use. Possible values: 'docker', 'rkt'. Default: 'docker'.")
fs.StringVar(&s.RktPath, "rkt-path", s.RktPath, "Path of rkt binary. Leave empty to use the first rkt in $PATH. Only used if --container-runtime='rkt'")
fs.StringVar(&s.RktStage1Image, "rkt-stage1-image", s.RktStage1Image, "image to use as stage1. Local paths and http/https URLs are supported. If empty, the 'stage1.aci' in the same directory as '--rkt-path' will be used")
fs.StringVar(&s.SystemContainer, "system-container", s.SystemContainer, "Optional resource-only container in which to place all non-kernel processes that are not already in a container. Empty for no container. Rolling back the flag requires a reboot. (Default: \"\").")
fs.BoolVar(&s.ConfigureCBR0, "configure-cbr0", s.ConfigureCBR0, "If true, kubelet will configure cbr0 based on Node.Spec.PodCIDR.")
fs.IntVar(&s.MaxPods, "max-pods", s.MaxPods, "Number of Pods that can run on this Kubelet.")
fs.StringVar(&s.DockerExecHandlerName, "docker-exec-handler", s.DockerExecHandlerName, "Handler to use when executing a command in a container. Valid values are 'native' and 'nsenter'. Defaults to 'native'.")
fs.StringVar(&s.PodCIDR, "pod-cidr", "", "The CIDR to use for pod IP addresses, only used in standalone mode. In cluster mode, this is obtained from the master.")
fs.StringVar(&s.ResolverConfig, "resolv-conf", kubetypes.ResolvConfDefault, "Resolver configuration file used as the basis for the container DNS resolution configuration.")
fs.BoolVar(&s.CPUCFSQuota, "cpu-cfs-quota", s.CPUCFSQuota, "Enable CPU CFS quota enforcement for containers that specify CPU limits")
// Flags intended for testing, not recommended used in production environments.
fs.BoolVar(&s.ReallyCrashForTesting, "really-crash-for-testing", s.ReallyCrashForTesting, "If true, when panics occur crash. Intended for testing.")
fs.Float64Var(&s.ChaosChance, "chaos-chance", s.ChaosChance, "If > 0.0, introduce random client errors and latency. Intended for testing. [default=0.0]")
fs.BoolVar(&s.Containerized, "containerized", s.Containerized, "Experimental support for running kubelet in a container. Intended for testing. [default=false]")
fs.Uint64Var(&s.MaxOpenFiles, "max-open-files", s.MaxOpenFiles, "Number of files that can be opened by Kubelet process. [default=1000000]")
fs.BoolVar(&s.ReconcileCIDR, "reconcile-cidr", s.ReconcileCIDR, "Reconcile node CIDR with the CIDR specified by the API server. No-op if register-node or configure-cbr0 is false. [default=true]")
fs.BoolVar(&s.RegisterSchedulable, "register-schedulable", s.RegisterSchedulable, "Register the node as schedulable. No-op if register-node is false. [default=true]")
fs.Float32Var(&s.KubeAPIQPS, "kube-api-qps", s.KubeAPIQPS, "QPS to use while talking with kubernetes apiserver")
fs.IntVar(&s.KubeAPIBurst, "kube-api-burst", s.KubeAPIBurst, "Burst to use while talking with kubernetes apiserver")
fs.BoolVar(&s.SerializeImagePulls, "serialize-image-pulls", s.SerializeImagePulls, "Pull images one at a time. We recommend *not* changing the default value on nodes that run docker daemon with version < 1.9 or an Aufs storage backend. Issue #10959 has more details. [default=true]")
fs.BoolVar(&s.ExperimentalFlannelOverlay, "experimental-flannel-overlay", s.ExperimentalFlannelOverlay, "Experimental support for starting the kubelet with the default overlay network (flannel). Assumes flanneld is already running in client mode. [default=false]")
fs.DurationVar(&s.OutOfDiskTransitionFrequency, "outofdisk-transition-frequency", s.OutOfDiskTransitionFrequency, "Duration for which the kubelet has to wait before transitioning out of out-of-disk node condition status. Default: 5m0s")
fs.IPVar(&s.NodeIP, "node-ip", s.NodeIP, "IP address of the node. If set, kubelet will use this IP address for the node")
}

304
cmd/kubelet/app/server.go
View File

@ -29,6 +29,11 @@ import (
"strings"
"time"
"github.com/golang/glog"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"k8s.io/kubernetes/cmd/kubelet/app/options"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/capabilities"
"k8s.io/kubernetes/pkg/client/chaosclient"
@ -37,6 +42,7 @@ import (
clientauth "k8s.io/kubernetes/pkg/client/unversioned/auth"
"k8s.io/kubernetes/pkg/client/unversioned/clientcmd"
clientcmdapi "k8s.io/kubernetes/pkg/client/unversioned/clientcmd/api"
"k8s.io/kubernetes/pkg/cloudprovider"
"k8s.io/kubernetes/pkg/credentialprovider"
"k8s.io/kubernetes/pkg/healthz"
"k8s.io/kubernetes/pkg/kubelet"
@ -46,10 +52,8 @@ import (
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/dockertools"
"k8s.io/kubernetes/pkg/kubelet/network"
"k8s.io/kubernetes/pkg/kubelet/qos"
"k8s.io/kubernetes/pkg/kubelet/server"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
"k8s.io/kubernetes/pkg/master/ports"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/pkg/util/chmod"
"k8s.io/kubernetes/pkg/util/chown"
@ -58,110 +62,8 @@ import (
nodeutil "k8s.io/kubernetes/pkg/util/node"
"k8s.io/kubernetes/pkg/util/oom"
"k8s.io/kubernetes/pkg/volume"
"github.com/golang/glog"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"k8s.io/kubernetes/pkg/cloudprovider"
)
const (
defaultRootDir = "/var/lib/kubelet"
experimentalFlannelOverlay = false
)
// KubeletServer encapsulates all of the parameters necessary for starting up
// a kubelet. These can either be set via command line or directly.
type KubeletServer struct {
Address net.IP
AllowPrivileged bool
APIServerList []string
AuthPath util.StringFlag // Deprecated -- use KubeConfig instead
CAdvisorPort uint
CertDirectory string
CgroupRoot string
CloudConfigFile string
CloudProvider string
ClusterDNS net.IP
ClusterDomain string
Config string
ConfigureCBR0 bool
ContainerRuntime string
CPUCFSQuota bool
DockerDaemonContainer string
DockerEndpoint string
DockerExecHandlerName string
EnableDebuggingHandlers bool
EnableServer bool
EventBurst int
EventRecordQPS float32
FileCheckFrequency time.Duration
HealthzBindAddress net.IP
HealthzPort int
HostnameOverride string
HostNetworkSources string
HostPIDSources string
HostIPCSources string
HTTPCheckFrequency time.Duration
ImageGCHighThresholdPercent int
ImageGCLowThresholdPercent int
KubeConfig util.StringFlag
LowDiskSpaceThresholdMB int
ManifestURL string
ManifestURLHeader string
MasterServiceNamespace string
MaxContainerCount int
MaxOpenFiles uint64
MaxPerPodContainerCount int
MaxPods int
MinimumGCAge time.Duration
NetworkPluginDir string
VolumePluginDir string
NetworkPluginName string
NodeLabels []string
NodeLabelsFile string
NodeStatusUpdateFrequency time.Duration
OOMScoreAdj int
PodCIDR string
PodInfraContainerImage string
Port uint
ReadOnlyPort uint
RegisterNode bool
RegisterSchedulable bool
RegistryBurst int
RegistryPullQPS float64
ResolverConfig string
ResourceContainer string
RktPath string
RktStage1Image string
RootDirectory string
RunOnce bool
StandaloneMode bool
StreamingConnectionIdleTimeout time.Duration
SyncFrequency time.Duration
SystemContainer string
TLSCertFile string
TLSPrivateKeyFile string
ReconcileCIDR bool
OutOfDiskTransitionFrequency time.Duration
// Flags intended for testing
// Is the kubelet containerized?
Containerized bool
// Insert a probability of random errors during calls to the master.
ChaosChance float64
// Crash immediately, rather than eating panics.
ReallyCrashForTesting bool
KubeAPIQPS float32
KubeAPIBurst int
// Pull images one at a time.
SerializeImagePulls bool
ExperimentalFlannelOverlay bool
NodeIP net.IP
}
// bootstrapping interface for kubelet, targets the initialization protocol
type KubeletBootstrap interface {
BirthCry()
@ -175,73 +77,9 @@ type KubeletBootstrap interface {
// create and initialize a Kubelet instance
type KubeletBuilder func(kc *KubeletConfig) (KubeletBootstrap, *config.PodConfig, error)
// NewKubeletServer will create a new KubeletServer with default values.
func NewKubeletServer() *KubeletServer {
return &KubeletServer{
Address: net.ParseIP("0.0.0.0"),
AuthPath: util.NewStringFlag("/var/lib/kubelet/kubernetes_auth"), // deprecated
CAdvisorPort: 4194,
CertDirectory: "/var/run/kubernetes",
CgroupRoot: "",
ConfigureCBR0: false,
ContainerRuntime: "docker",
CPUCFSQuota: false,
DockerDaemonContainer: "/docker-daemon",
DockerExecHandlerName: "native",
EventBurst: 10,
EventRecordQPS: 5.0,
EnableDebuggingHandlers: true,
EnableServer: true,
FileCheckFrequency: 20 * time.Second,
HealthzBindAddress: net.ParseIP("127.0.0.1"),
HealthzPort: 10248,
HostNetworkSources: kubetypes.AllSource,
HostPIDSources: kubetypes.AllSource,
HostIPCSources: kubetypes.AllSource,
HTTPCheckFrequency: 20 * time.Second,
ImageGCHighThresholdPercent: 90,
ImageGCLowThresholdPercent: 80,
KubeConfig: util.NewStringFlag("/var/lib/kubelet/kubeconfig"),
LowDiskSpaceThresholdMB: 256,
MasterServiceNamespace: api.NamespaceDefault,
MaxContainerCount: 100,
MaxPerPodContainerCount: 2,
MaxOpenFiles: 1000000,
MaxPods: 40,
MinimumGCAge: 1 * time.Minute,
NetworkPluginDir: "/usr/libexec/kubernetes/kubelet-plugins/net/exec/",
VolumePluginDir: "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/",
NetworkPluginName: "",
NodeLabels: []string{},
NodeLabelsFile: "",
NodeStatusUpdateFrequency: 10 * time.Second,
OOMScoreAdj: qos.KubeletOOMScoreAdj,
PodInfraContainerImage: dockertools.PodInfraContainerImage,
Port: ports.KubeletPort,
ReadOnlyPort: ports.KubeletReadOnlyPort,
RegisterNode: true, // will be ignored if no apiserver is configured
RegisterSchedulable: true,
RegistryBurst: 10,
RegistryPullQPS: 5.0,
ResourceContainer: "/kubelet",
RktPath: "",
RktStage1Image: "",
RootDirectory: defaultRootDir,
SerializeImagePulls: true,
StreamingConnectionIdleTimeout: 5 * time.Minute,
SyncFrequency: 1 * time.Minute,
SystemContainer: "",
ReconcileCIDR: true,
KubeAPIQPS: 5.0,
KubeAPIBurst: 10,
OutOfDiskTransitionFrequency: 5 * time.Minute,
ExperimentalFlannelOverlay: experimentalFlannelOverlay,
}
}
// NewKubeletCommand creates a *cobra.Command object with default parameters
func NewKubeletCommand() *cobra.Command {
s := NewKubeletServer()
s := options.NewKubeletServer()
s.AddFlags(pflag.CommandLine)
cmd := &cobra.Command{
Use: "kubelet",
@ -269,96 +107,9 @@ HTTP server: The kubelet can also listen for HTTP and respond to a simple API
return cmd
}
// AddFlags adds flags for a specific KubeletServer to the specified FlagSet
func (s *KubeletServer) AddFlags(fs *pflag.FlagSet) {
fs.StringVar(&s.Config, "config", s.Config, "Path to the config file or directory of files")
fs.DurationVar(&s.SyncFrequency, "sync-frequency", s.SyncFrequency, "Max period between synchronizing running containers and config")
fs.DurationVar(&s.FileCheckFrequency, "file-check-frequency", s.FileCheckFrequency, "Duration between checking config files for new data")
fs.DurationVar(&s.HTTPCheckFrequency, "http-check-frequency", s.HTTPCheckFrequency, "Duration between checking http for new data")
fs.StringVar(&s.ManifestURL, "manifest-url", s.ManifestURL, "URL for accessing the container manifest")
fs.StringVar(&s.ManifestURLHeader, "manifest-url-header", s.ManifestURLHeader, "HTTP header to use when accessing the manifest URL, with the key separated from the value with a ':', as in 'key:value'")
fs.BoolVar(&s.EnableServer, "enable-server", s.EnableServer, "Enable the Kubelet's server")
fs.IPVar(&s.Address, "address", s.Address, "The IP address for the Kubelet to serve on (set to 0.0.0.0 for all interfaces)")
fs.UintVar(&s.Port, "port", s.Port, "The port for the Kubelet to serve on.")
fs.UintVar(&s.ReadOnlyPort, "read-only-port", s.ReadOnlyPort, "The read-only port for the Kubelet to serve on with no authentication/authorization (set to 0 to disable)")
fs.StringVar(&s.TLSCertFile, "tls-cert-file", s.TLSCertFile, ""+
"File containing x509 Certificate for HTTPS. (CA cert, if any, concatenated after server cert). "+
"If --tls-cert-file and --tls-private-key-file are not provided, a self-signed certificate and key "+
"are generated for the public address and saved to the directory passed to --cert-dir.")
fs.StringVar(&s.TLSPrivateKeyFile, "tls-private-key-file", s.TLSPrivateKeyFile, "File containing x509 private key matching --tls-cert-file.")
fs.StringVar(&s.CertDirectory, "cert-dir", s.CertDirectory, "The directory where the TLS certs are located (by default /var/run/kubernetes). "+
"If --tls-cert-file and --tls-private-key-file are provided, this flag will be ignored.")
fs.StringVar(&s.HostnameOverride, "hostname-override", s.HostnameOverride, "If non-empty, will use this string as identification instead of the actual hostname.")
fs.StringVar(&s.PodInfraContainerImage, "pod-infra-container-image", s.PodInfraContainerImage, "The image whose network/ipc namespaces containers in each pod will use.")
fs.StringVar(&s.DockerEndpoint, "docker-endpoint", s.DockerEndpoint, "If non-empty, use this for the docker endpoint to communicate with")
fs.StringVar(&s.RootDirectory, "root-dir", s.RootDirectory, "Directory path for managing kubelet files (volume mounts,etc).")
fs.BoolVar(&s.AllowPrivileged, "allow-privileged", s.AllowPrivileged, "If true, allow containers to request privileged mode. [default=false]")
fs.StringVar(&s.HostNetworkSources, "host-network-sources", s.HostNetworkSources, "Comma-separated list of sources from which the Kubelet allows pods to use of host network. [default=\"*\"]")
fs.StringVar(&s.HostPIDSources, "host-pid-sources", s.HostPIDSources, "Comma-separated list of sources from which the Kubelet allows pods to use the host pid namespace. [default=\"*\"]")
fs.StringVar(&s.HostIPCSources, "host-ipc-sources", s.HostIPCSources, "Comma-separated list of sources from which the Kubelet allows pods to use the host ipc namespace. [default=\"*\"]")
fs.Float64Var(&s.RegistryPullQPS, "registry-qps", s.RegistryPullQPS, "If > 0, limit registry pull QPS to this value. If 0, unlimited. [default=5.0]")
fs.IntVar(&s.RegistryBurst, "registry-burst", s.RegistryBurst, "Maximum size of a bursty pulls, temporarily allows pulls to burst to this number, while still not exceeding registry-qps. Only used if --registry-qps > 0")
fs.Float32Var(&s.EventRecordQPS, "event-qps", s.EventRecordQPS, "If > 0, limit event creations per second to this value. If 0, unlimited.")
fs.IntVar(&s.EventBurst, "event-burst", s.EventBurst, "Maximum size of a bursty event records, temporarily allows event records to burst to this number, while still not exceeding event-qps. Only used if --event-qps > 0")
fs.BoolVar(&s.RunOnce, "runonce", s.RunOnce, "If true, exit after spawning pods from local manifests or remote urls. Exclusive with --api-servers, and --enable-server")
fs.BoolVar(&s.EnableDebuggingHandlers, "enable-debugging-handlers", s.EnableDebuggingHandlers, "Enables server endpoints for log collection and local running of containers and commands")
fs.DurationVar(&s.MinimumGCAge, "minimum-container-ttl-duration", s.MinimumGCAge, "Minimum age for a finished container before it is garbage collected. Examples: '300ms', '10s' or '2h45m'")
fs.IntVar(&s.MaxPerPodContainerCount, "maximum-dead-containers-per-container", s.MaxPerPodContainerCount, "Maximum number of old instances to retain per container. Each container takes up some disk space. Default: 2.")
fs.IntVar(&s.MaxContainerCount, "maximum-dead-containers", s.MaxContainerCount, "Maximum number of old instances of containers to retain globally. Each container takes up some disk space. Default: 100.")
fs.Var(&s.AuthPath, "auth-path", "Path to .kubernetes_auth file, specifying how to authenticate to API server.")
fs.MarkDeprecated("auth-path", "will be removed in a future version")
fs.Var(&s.KubeConfig, "kubeconfig", "Path to a kubeconfig file, specifying how to authenticate to API server (the master location is set by the api-servers flag).")
fs.UintVar(&s.CAdvisorPort, "cadvisor-port", s.CAdvisorPort, "The port of the localhost cAdvisor endpoint")
fs.IntVar(&s.HealthzPort, "healthz-port", s.HealthzPort, "The port of the localhost healthz endpoint")
fs.IPVar(&s.HealthzBindAddress, "healthz-bind-address", s.HealthzBindAddress, "The IP address for the healthz server to serve on, defaulting to 127.0.0.1 (set to 0.0.0.0 for all interfaces)")
fs.IntVar(&s.OOMScoreAdj, "oom-score-adj", s.OOMScoreAdj, "The oom-score-adj value for kubelet process. Values must be within the range [-1000, 1000]")
fs.StringSliceVar(&s.APIServerList, "api-servers", []string{}, "List of Kubernetes API servers for publishing events, and reading pods and services. (ip:port), comma separated.")
fs.BoolVar(&s.RegisterNode, "register-node", s.RegisterNode, "Register the node with the apiserver (defaults to true if --api-servers is set)")
fs.StringVar(&s.ClusterDomain, "cluster-domain", s.ClusterDomain, "Domain for this cluster. If set, kubelet will configure all containers to search this domain in addition to the host's search domains")
fs.StringVar(&s.MasterServiceNamespace, "master-service-namespace", s.MasterServiceNamespace, "The namespace from which the kubernetes master services should be injected into pods")
fs.IPVar(&s.ClusterDNS, "cluster-dns", s.ClusterDNS, "IP address for a cluster DNS server. If set, kubelet will configure all containers to use this for DNS resolution in addition to the host's DNS servers")
fs.DurationVar(&s.StreamingConnectionIdleTimeout, "streaming-connection-idle-timeout", s.StreamingConnectionIdleTimeout, "Maximum time a streaming connection can be idle before the connection is automatically closed. Example: '5m'")
fs.StringSliceVar(&s.NodeLabels, "node-label", []string{}, "add labels when registering the node in the cluster, the flag can be used multiple times (key=value)")
fs.StringVar(&s.NodeLabelsFile, "node-labels-file", "", "the path to a yaml or json file containing a series of key pair labels to apply on node registration")
fs.DurationVar(&s.NodeStatusUpdateFrequency, "node-status-update-frequency", s.NodeStatusUpdateFrequency, "Specifies how often kubelet posts node status to master. Note: be cautious when changing the constant, it must work with nodeMonitorGracePeriod in nodecontroller. Default: 10s")
fs.IntVar(&s.ImageGCHighThresholdPercent, "image-gc-high-threshold", s.ImageGCHighThresholdPercent, "The percent of disk usage after which image garbage collection is always run. Default: 90%")
fs.IntVar(&s.ImageGCLowThresholdPercent, "image-gc-low-threshold", s.ImageGCLowThresholdPercent, "The percent of disk usage before which image garbage collection is never run. Lowest disk usage to garbage collect to. Default: 80%")
fs.IntVar(&s.LowDiskSpaceThresholdMB, "low-diskspace-threshold-mb", s.LowDiskSpaceThresholdMB, "The absolute free disk space, in MB, to maintain. When disk space falls below this threshold, new pods would be rejected. Default: 256")
fs.StringVar(&s.NetworkPluginName, "network-plugin", s.NetworkPluginName, "<Warning: Alpha feature> The name of the network plugin to be invoked for various events in kubelet/pod lifecycle")
fs.StringVar(&s.NetworkPluginDir, "network-plugin-dir", s.NetworkPluginDir, "<Warning: Alpha feature> The full path of the directory in which to search for network plugins")
fs.StringVar(&s.VolumePluginDir, "volume-plugin-dir", s.VolumePluginDir, "<Warning: Alpha feature> The full path of the directory in which to search for additional third party volume plugins")
fs.StringVar(&s.CloudProvider, "cloud-provider", s.CloudProvider, "The provider for cloud services. Empty string for no provider.")
fs.StringVar(&s.CloudConfigFile, "cloud-config", s.CloudConfigFile, "The path to the cloud provider configuration file. Empty string for no configuration file.")
fs.StringVar(&s.ResourceContainer, "resource-container", s.ResourceContainer, "Absolute name of the resource-only container to create and run the Kubelet in (Default: /kubelet).")
fs.StringVar(&s.CgroupRoot, "cgroup-root", s.CgroupRoot, "Optional root cgroup to use for pods. This is handled by the container runtime on a best effort basis. Default: '', which means use the container runtime default.")
fs.StringVar(&s.ContainerRuntime, "container-runtime", s.ContainerRuntime, "The container runtime to use. Possible values: 'docker', 'rkt'. Default: 'docker'.")
fs.StringVar(&s.RktPath, "rkt-path", s.RktPath, "Path of rkt binary. Leave empty to use the first rkt in $PATH. Only used if --container-runtime='rkt'")
fs.StringVar(&s.RktStage1Image, "rkt-stage1-image", s.RktStage1Image, "image to use as stage1. Local paths and http/https URLs are supported. If empty, the 'stage1.aci' in the same directory as '--rkt-path' will be used")
fs.StringVar(&s.SystemContainer, "system-container", s.SystemContainer, "Optional resource-only container in which to place all non-kernel processes that are not already in a container. Empty for no container. Rolling back the flag requires a reboot. (Default: \"\").")
fs.BoolVar(&s.ConfigureCBR0, "configure-cbr0", s.ConfigureCBR0, "If true, kubelet will configure cbr0 based on Node.Spec.PodCIDR.")
fs.IntVar(&s.MaxPods, "max-pods", s.MaxPods, "Number of Pods that can run on this Kubelet.")
fs.StringVar(&s.DockerExecHandlerName, "docker-exec-handler", s.DockerExecHandlerName, "Handler to use when executing a command in a container. Valid values are 'native' and 'nsenter'. Defaults to 'native'.")
fs.StringVar(&s.PodCIDR, "pod-cidr", "", "The CIDR to use for pod IP addresses, only used in standalone mode. In cluster mode, this is obtained from the master.")
fs.StringVar(&s.ResolverConfig, "resolv-conf", kubelet.ResolvConfDefault, "Resolver configuration file used as the basis for the container DNS resolution configuration.")
fs.BoolVar(&s.CPUCFSQuota, "cpu-cfs-quota", s.CPUCFSQuota, "Enable CPU CFS quota enforcement for containers that specify CPU limits")
// Flags intended for testing, not recommended used in production environments.
fs.BoolVar(&s.ReallyCrashForTesting, "really-crash-for-testing", s.ReallyCrashForTesting, "If true, when panics occur crash. Intended for testing.")
fs.Float64Var(&s.ChaosChance, "chaos-chance", s.ChaosChance, "If > 0.0, introduce random client errors and latency. Intended for testing. [default=0.0]")
fs.BoolVar(&s.Containerized, "containerized", s.Containerized, "Experimental support for running kubelet in a container. Intended for testing. [default=false]")
fs.Uint64Var(&s.MaxOpenFiles, "max-open-files", s.MaxOpenFiles, "Number of files that can be opened by Kubelet process. [default=1000000]")
fs.BoolVar(&s.ReconcileCIDR, "reconcile-cidr", s.ReconcileCIDR, "Reconcile node CIDR with the CIDR specified by the API server. No-op if register-node or configure-cbr0 is false. [default=true]")
fs.BoolVar(&s.RegisterSchedulable, "register-schedulable", s.RegisterSchedulable, "Register the node as schedulable. No-op if register-node is false. [default=true]")
fs.Float32Var(&s.KubeAPIQPS, "kube-api-qps", s.KubeAPIQPS, "QPS to use while talking with kubernetes apiserver")
fs.IntVar(&s.KubeAPIBurst, "kube-api-burst", s.KubeAPIBurst, "Burst to use while talking with kubernetes apiserver")
fs.BoolVar(&s.SerializeImagePulls, "serialize-image-pulls", s.SerializeImagePulls, "Pull images one at a time. We recommend *not* changing the default value on nodes that run docker daemon with version < 1.9 or an Aufs storage backend. Issue #10959 has more details. [default=true]")
fs.DurationVar(&s.OutOfDiskTransitionFrequency, "outofdisk-transition-frequency", s.OutOfDiskTransitionFrequency, "Duration for which the kubelet has to wait before transitioning out of out-of-disk node condition status. Default: 5m0s")
fs.BoolVar(&s.ExperimentalFlannelOverlay, "experimental-flannel-overlay", s.ExperimentalFlannelOverlay, "Experimental support for starting the kubelet with the default overlay network (flannel). Assumes flanneld is already running in client mode. [default=false]")
fs.IPVar(&s.NodeIP, "node-ip", s.NodeIP, "IP address of the node. If set, kubelet will use this IP address for the node")
}
// UnsecuredKubeletConfig returns a KubeletConfig suitable for being run, or an error if the server setup
// is not valid. It will not start any background processes, and does not include authentication/authorization
func (s *KubeletServer) UnsecuredKubeletConfig() (*KubeletConfig, error) {
func UnsecuredKubeletConfig(s *options.KubeletServer) (*KubeletConfig, error) {
hostNetworkSources, err := kubetypes.GetValidatedSources(strings.Split(s.HostNetworkSources, ","))
if err != nil {
return nil, err
@ -385,7 +136,7 @@ func (s *KubeletServer) UnsecuredKubeletConfig() (*KubeletConfig, error) {
chmodRunner := chmod.New()
chownRunner := chown.New()
tlsOptions, err := s.InitializeTLS()
tlsOptions, err := InitializeTLS(s)
if err != nil {
return nil, err
}
@ -502,16 +253,16 @@ func (s *KubeletServer) UnsecuredKubeletConfig() (*KubeletConfig, error) {
// The kcfg argument may be nil - if so, it is initialized from the settings on KubeletServer.
// Otherwise, the caller is assumed to have set up the KubeletConfig object and all defaults
// will be ignored.
func (s *KubeletServer) Run(kcfg *KubeletConfig) error {
func Run(s *options.KubeletServer, kcfg *KubeletConfig) error {
var err error
if kcfg == nil {
cfg, err := s.UnsecuredKubeletConfig()
cfg, err := UnsecuredKubeletConfig(s)
if err != nil {
return err
}
kcfg = cfg
clientConfig, err := s.CreateAPIServerClientConfig()
clientConfig, err := CreateAPIServerClientConfig(s)
if err == nil {
kcfg.KubeClient, err = client.New(clientConfig)
@ -584,7 +335,7 @@ func (s *KubeletServer) Run(kcfg *KubeletConfig) error {
// InitializeTLS checks for a configured TLSCertFile and TLSPrivateKeyFile: if unspecified a new self-signed
// certificate and key file are generated. Returns a configured server.TLSOptions object.
func (s *KubeletServer) InitializeTLS() (*server.TLSOptions, error) {
func InitializeTLS(s *options.KubeletServer) (*server.TLSOptions, error) {
if s.TLSCertFile == "" && s.TLSPrivateKeyFile == "" {
s.TLSCertFile = path.Join(s.CertDirectory, "kubelet.crt")
s.TLSPrivateKeyFile = path.Join(s.CertDirectory, "kubelet.key")
@ -606,7 +357,7 @@ func (s *KubeletServer) InitializeTLS() (*server.TLSOptions, error) {
return tlsOptions, nil
}
func (s *KubeletServer) authPathClientConfig(useDefaults bool) (*client.Config, error) {
func authPathClientConfig(s *options.KubeletServer, useDefaults bool) (*client.Config, error) {
authInfo, err := clientauth.LoadFromFile(s.AuthPath.Value())
if err != nil && !useDefaults {
return nil, err
@ -628,7 +379,7 @@ func (s *KubeletServer) authPathClientConfig(useDefaults bool) (*client.Config,
return &authConfig, nil
}
func (s *KubeletServer) kubeconfigClientConfig() (*client.Config, error) {
func kubeconfigClientConfig(s *options.KubeletServer) (*client.Config, error) {
return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
&clientcmd.ClientConfigLoadingRules{ExplicitPath: s.KubeConfig.Value()},
&clientcmd.ConfigOverrides{ClusterInfo: clientcmdapi.Cluster{Server: s.APIServerList[0]}}).ClientConfig()
@ -640,20 +391,21 @@ func (s *KubeletServer) kubeconfigClientConfig() (*client.Config, error) {
// to load the default kubeconfig file, then the default auth path file, and
// fall back to the default auth (none) without an error.
// TODO(roberthbailey): Remove support for --auth-path
func (s *KubeletServer) createClientConfig() (*client.Config, error) {
func createClientConfig(s *options.KubeletServer) (*client.Config, error) {
if s.KubeConfig.Provided() && s.AuthPath.Provided() {
return nil, fmt.Errorf("cannot specify both --kubeconfig and --auth-path")
}
if s.KubeConfig.Provided() {
return s.kubeconfigClientConfig()
} else if s.AuthPath.Provided() {
return s.authPathClientConfig(false)
return kubeconfigClientConfig(s)
}
if s.AuthPath.Provided() {
return authPathClientConfig(s, false)
}
// Try the kubeconfig default first, falling back to the auth path default.
clientConfig, err := s.kubeconfigClientConfig()
clientConfig, err := kubeconfigClientConfig(s)
if err != nil {
glog.Warningf("Could not load kubeconfig file %s: %v. Trying auth path instead.", s.KubeConfig, err)
return s.authPathClientConfig(true)
return authPathClientConfig(s, true)
}
return clientConfig, nil
}
@ -662,7 +414,7 @@ func (s *KubeletServer) createClientConfig() (*client.Config, error) {
// including api-server-list, via createClientConfig and then injects chaos into
// the configuration via addChaosToClientConfig. This func is exported to support
// integration with third party kubelet extensions (e.g. kubernetes-mesos).
func (s *KubeletServer) CreateAPIServerClientConfig() (*client.Config, error) {
func CreateAPIServerClientConfig(s *options.KubeletServer) (*client.Config, error) {
if len(s.APIServerList) < 1 {
return nil, fmt.Errorf("no api servers specified")
}
@ -671,7 +423,7 @@ func (s *KubeletServer) CreateAPIServerClientConfig() (*client.Config, error) {
glog.Infof("Multiple api servers specified. Picking first one")
}
clientConfig, err := s.createClientConfig()
clientConfig, err := createClientConfig(s)
if err != nil {
return nil, err
}
@ -680,12 +432,12 @@ func (s *KubeletServer) CreateAPIServerClientConfig() (*client.Config, error) {
clientConfig.QPS = s.KubeAPIQPS
clientConfig.Burst = s.KubeAPIBurst
s.addChaosToClientConfig(clientConfig)
addChaosToClientConfig(s, clientConfig)
return clientConfig, nil
}
// addChaosToClientConfig injects random errors into client connections if configured.
func (s *KubeletServer) addChaosToClientConfig(config *client.Config) {
func addChaosToClientConfig(s *options.KubeletServer, config *client.Config) {
if s.ChaosChance != 0.0 {
config.WrapTransport = func(rt http.RoundTripper) http.RoundTripper {
seed := chaosclient.NewSeed(1)
@ -756,14 +508,14 @@ func SimpleKubelet(client *client.Client,
NodeStatusUpdateFrequency: nodeStatusUpdateFrequency,
OOMAdjuster: oom.NewFakeOOMAdjuster(),
OSInterface: osInterface,
PodInfraContainerImage: dockertools.PodInfraContainerImage,
PodInfraContainerImage: kubetypes.PodInfraContainerImage,
Port: port,
ReadOnlyPort: readOnlyPort,
RegisterNode: true,
RegisterSchedulable: true,
RegistryBurst: 10,
RegistryPullQPS: 5.0,
ResolverConfig: kubelet.ResolvConfDefault,
ResolverConfig: kubetypes.ResolvConfDefault,
ResourceContainer: "/kubelet",
RootDirectory: rootDir,
SerializeImagePulls: true,

7
cmd/kubelet/kubelet.go
View File

@ -25,7 +25,8 @@ import (
"os"
"runtime"
kubeletapp "k8s.io/kubernetes/cmd/kubelet/app"
"k8s.io/kubernetes/cmd/kubelet/app"
"k8s.io/kubernetes/cmd/kubelet/app/options"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/pkg/version/verflag"
@ -34,7 +35,7 @@ import (
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
s := kubeletapp.NewKubeletServer()
s := options.NewKubeletServer()
s.AddFlags(pflag.CommandLine)
util.InitFlags()
@ -43,7 +44,7 @@ func main() {
verflag.PrintAndExitIfRequested()
if err := s.Run(nil); err != nil {
if err := app.Run(s, nil); err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}

13
contrib/mesos/pkg/executor/service/service.go
View File

@ -27,6 +27,7 @@ import (
bindings "github.com/mesos/mesos-go/executor"
"github.com/spf13/pflag"
kubeletapp "k8s.io/kubernetes/cmd/kubelet/app"
"k8s.io/kubernetes/cmd/kubelet/app/options"
"k8s.io/kubernetes/contrib/mesos/pkg/executor"
"k8s.io/kubernetes/contrib/mesos/pkg/executor/config"
"k8s.io/kubernetes/contrib/mesos/pkg/hyperkube"
@ -42,7 +43,7 @@ import (
)
type KubeletExecutorServer struct {
*kubeletapp.KubeletServer
*options.KubeletServer
SuicideTimeout time.Duration
LaunchGracePeriod time.Duration
@ -54,7 +55,7 @@ type KubeletExecutorServer struct {
func NewKubeletExecutorServer() *KubeletExecutorServer {
k := &KubeletExecutorServer{
KubeletServer: kubeletapp.NewKubeletServer(),
KubeletServer: options.NewKubeletServer(),
SuicideTimeout: config.DefaultSuicideTimeout,
LaunchGracePeriod: config.DefaultLaunchGracePeriod,
kletReady: make(chan struct{}),
@ -156,7 +157,7 @@ func (s *KubeletExecutorServer) runKubelet(
}
}()
kcfg, err := s.UnsecuredKubeletConfig()
kcfg, err := kubeletapp.UnsecuredKubeletConfig(s.KubeletServer)
if err != nil {
return err
}
@ -186,7 +187,7 @@ func (s *KubeletExecutorServer) runKubelet(
kcfg.KubeClient = apiclient
// taken from KubeletServer#Run(*KubeletConfig)
eventClientConfig, err := s.CreateAPIServerClientConfig()
eventClientConfig, err := kubeletapp.CreateAPIServerClientConfig(s.KubeletServer)
if err != nil {
return err
}
@ -242,7 +243,7 @@ func (s *KubeletExecutorServer) runKubelet(
// initialize the cloud provider. We explicitly wouldn't want
// that because then every kubelet instance would query the master
// state.json which does not scale.
err = s.KubeletServer.Run(kcfg)
err = kubeletapp.Run(s.KubeletServer, kcfg)
return
}
@ -263,7 +264,7 @@ func (s *KubeletExecutorServer) Run(hks hyperkube.Interface, _ []string) error {
// create apiserver client
var apiclient *client.Client
clientConfig, err := s.CreateAPIServerClientConfig()
clientConfig, err := kubeletapp.CreateAPIServerClientConfig(s.KubeletServer)
if err == nil {
apiclient, err = client.New(clientConfig)
}

3
contrib/mesos/pkg/minion/server.go
View File

@ -27,6 +27,7 @@ import (
"strings"
"syscall"
kubeletapp "k8s.io/kubernetes/cmd/kubelet/app"
exservice "k8s.io/kubernetes/contrib/mesos/pkg/executor/service"
"k8s.io/kubernetes/contrib/mesos/pkg/hyperkube"
"k8s.io/kubernetes/contrib/mesos/pkg/minion/config"
@ -250,7 +251,7 @@ func (ms *MinionServer) Run(hks hyperkube.Interface, _ []string) error {
}
// create apiserver client
clientConfig, err := ms.KubeletExecutorServer.CreateAPIServerClientConfig()
clientConfig, err := kubeletapp.CreateAPIServerClientConfig(ms.KubeletExecutorServer.KubeletServer)
if err != nil {
// required for k8sm since we need to send api.Binding information
// back to the apiserver

4
contrib/mesos/pkg/node/statusupdater.go
View File

@ -21,7 +21,7 @@ import (
"time"
log "github.com/golang/glog"
kubeletapp "k8s.io/kubernetes/cmd/kubelet/app"
"k8s.io/kubernetes/cmd/kubelet/app/options"
"k8s.io/kubernetes/contrib/mesos/pkg/runtime"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
@ -47,7 +47,7 @@ type StatusUpdater struct {
}
func NewStatusUpdater(client *client.Client, relistPeriod time.Duration, nowFunc func() time.Time) *StatusUpdater {
kubecfg := kubeletapp.NewKubeletServer() // only create to get the config, this is without side-effects
kubecfg := options.NewKubeletServer() // only create to get the config, this is without side-effects
return &StatusUpdater{
client: client,
relistPeriod: relistPeriod,

8
contrib/mesos/pkg/node/statusupdater_test.go
View File

@ -21,8 +21,8 @@ import (
"time"
"github.com/stretchr/testify/assert"
"k8s.io/kubernetes/cmd/kube-controller-manager/app"
kubeletapp "k8s.io/kubernetes/cmd/kubelet/app"
cmapp "k8s.io/kubernetes/cmd/kube-controller-manager/app"
"k8s.io/kubernetes/cmd/kubelet/app/options"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/unversioned"
)
@ -46,8 +46,8 @@ func Test_nodeWithUpdatedStatus(t *testing.T) {
}
}
cm := app.NewCMServer()
kubecfg := kubeletapp.NewKubeletServer()
cm := cmapp.NewCMServer()
kubecfg := options.NewKubeletServer()
assert.True(t, kubecfg.NodeStatusUpdateFrequency*3 < cm.NodeMonitorGracePeriod) // sanity check for defaults
n := testNode(0, api.ConditionTrue, "KubeletReady")

10
pkg/kubelet/container/runtime.go
View File

@ -216,6 +216,16 @@ func (c *ContainerID) UnmarshalJSON(data []byte) error {
return c.ParseString(string(data))
}
// DockerID is an ID of docker container. It is a type to make it clear when we're working with docker container Ids
type DockerID string
func (id DockerID) ContainerID() ContainerID {
return ContainerID{
Type: "docker",
ID: string(id),
}
}
type ContainerState string
const (

3
pkg/kubelet/dockertools/convert.go
View File

@ -24,7 +24,6 @@ import (
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/unversioned"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
)
// This file contains helper functions to convert docker API types to runtime
@ -55,7 +54,7 @@ func toRuntimeContainer(c *docker.APIContainers) (*kubecontainer.Container, erro
}
return &kubecontainer.Container{
ID: kubetypes.DockerID(c.ID).ContainerID(),
ID: kubecontainer.DockerID(c.ID).ContainerID(),
Name: dockerName.ContainerName,
Image: c.Image,
Hash: hash,

7
pkg/kubelet/dockertools/docker.go
View File

@ -38,10 +38,9 @@ import (
)
const (
PodInfraContainerName = leaky.PodInfraContainerName
DockerPrefix = "docker://"
PodInfraContainerImage = "gcr.io/google_containers/pause:2.0"
LogSuffix = "log"
PodInfraContainerName = leaky.PodInfraContainerName
DockerPrefix = "docker://"
LogSuffix = "log"
)
const (

20
pkg/kubelet/dockertools/docker_test.go
View File

@ -189,7 +189,7 @@ func TestExecSupportNotExists(t *testing.T) {
func TestDockerContainerCommand(t *testing.T) {
runner := &DockerManager{}
containerID := kubetypes.DockerID("1234").ContainerID()
containerID := kubecontainer.DockerID("1234").ContainerID()
command := []string{"ls"}
cmd, _ := runner.getRunInContainerCommand(containerID, command)
if cmd.Dir != "/var/lib/docker/execdriver/native/"+containerID.ID {
@ -578,13 +578,13 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("foobar").ContainerID(),
ID: kubecontainer.DockerID("foobar").ContainerID(),
Name: "foobar",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
},
{
ID: kubetypes.DockerID("baz").ContainerID(),
ID: kubecontainer.DockerID("baz").ContainerID(),
Name: "baz",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
@ -597,7 +597,7 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("barbar").ContainerID(),
ID: kubecontainer.DockerID("barbar").ContainerID(),
Name: "barbar",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
@ -639,19 +639,19 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("foobar").ContainerID(),
ID: kubecontainer.DockerID("foobar").ContainerID(),
Name: "foobar",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
},
{
ID: kubetypes.DockerID("barfoo").ContainerID(),
ID: kubecontainer.DockerID("barfoo").ContainerID(),
Name: "barfoo",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
},
{
ID: kubetypes.DockerID("baz").ContainerID(),
ID: kubecontainer.DockerID("baz").ContainerID(),
Name: "baz",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
@ -664,7 +664,7 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("barbar").ContainerID(),
ID: kubecontainer.DockerID("barbar").ContainerID(),
Name: "barbar",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
@ -677,7 +677,7 @@ func TestFindContainersByPod(t *testing.T) {
Namespace: "ns",
Containers: []*kubecontainer.Container{
{
ID: kubetypes.DockerID("bazbaz").ContainerID(),
ID: kubecontainer.DockerID("bazbaz").ContainerID(),
Name: "bazbaz",
Hash: 0x1234,
State: kubecontainer.ContainerStateUnknown,
@ -696,7 +696,7 @@ func TestFindContainersByPod(t *testing.T) {
fakeClient := &FakeDockerClient{}
np, _ := network.InitNetworkPlugin([]network.NetworkPlugin{}, "", network.NewFakeHost(nil))
// image back-off is set to nil, this test shouldnt pull images
containerManager := NewFakeDockerManager(fakeClient, &record.FakeRecorder{}, nil, nil, &cadvisorapi.MachineInfo{}, PodInfraContainerImage, 0, 0, "", kubecontainer.FakeOS{}, np, nil, nil, nil)
containerManager := NewFakeDockerManager(fakeClient, &record.FakeRecorder{}, nil, nil, &cadvisorapi.MachineInfo{}, kubetypes.PodInfraContainerImage, 0, 0, "", kubecontainer.FakeOS{}, np, nil, nil, nil)
for i, test := range tests {
fakeClient.ContainerList = test.containerList
fakeClient.ExitedContainerList = test.exitedContainerList

28
pkg/kubelet/dockertools/manager.go
View File

@ -319,7 +319,7 @@ func (dm *DockerManager) determineContainerIP(podNamespace, podName string, cont
}
if dm.networkPlugin.Name() != network.DefaultPluginName {
netStatus, err := dm.networkPlugin.Status(podNamespace, podName, kubetypes.DockerID(container.ID))
netStatus, err := dm.networkPlugin.Status(podNamespace, podName, kubecontainer.DockerID(container.ID))
if err != nil {
glog.Errorf("NetworkPlugin %s failed on the status hook for pod '%s' - %v", dm.networkPlugin.Name(), podName, err)
} else if netStatus != nil {
@ -354,7 +354,7 @@ func (dm *DockerManager) inspectContainer(id string, podName, podNamespace strin
RestartCount: containerInfo.RestartCount,
Image: iResult.Config.Image,
ImageID: DockerPrefix + iResult.Image,
ID: kubetypes.DockerID(id).ContainerID(),
ID: kubecontainer.DockerID(id).ContainerID(),
ExitCode: iResult.State.ExitCode,
CreatedAt: iResult.Created,
Hash: hash,
@ -771,7 +771,7 @@ func (dm *DockerManager) runContainer(
}
dm.recorder.Eventf(ref, api.EventTypeNormal, kubecontainer.StartedContainer, "Started container with docker id %v", util.ShortenString(dockerContainer.ID, 12))
return kubetypes.DockerID(dockerContainer.ID).ContainerID(), nil
return kubecontainer.DockerID(dockerContainer.ID).ContainerID(), nil
}
func setEntrypointAndCommand(container *api.Container, opts *kubecontainer.RunContainerOptions, dockerOpts *docker.CreateContainerOptions) {
@ -1266,7 +1266,7 @@ func (dm *DockerManager) KillPod(pod *api.Pod, runningPod kubecontainer.Pod) err
}
wg.Wait()
if networkContainer != nil {
if err := dm.networkPlugin.TearDownPod(runningPod.Namespace, runningPod.Name, kubetypes.DockerID(networkContainer.ID.ID)); err != nil {
if err := dm.networkPlugin.TearDownPod(runningPod.Namespace, runningPod.Name, kubecontainer.DockerID(networkContainer.ID.ID)); err != nil {
glog.Errorf("Failed tearing down the infra container: %v", err)
errs <- err
}
@ -1559,7 +1559,7 @@ func appendToFile(filePath, stringToAppend string) error {
}
// createPodInfraContainer starts the pod infra container for a pod. Returns the docker container ID of the newly created container.
func (dm *DockerManager) createPodInfraContainer(pod *api.Pod) (kubetypes.DockerID, error) {
func (dm *DockerManager) createPodInfraContainer(pod *api.Pod) (kubecontainer.DockerID, error) {
start := time.Now()
defer func() {
metrics.ContainerManagerLatency.WithLabelValues("createPodInfraContainer").Observe(metrics.SinceInMicroseconds(start))
@ -1601,7 +1601,7 @@ func (dm *DockerManager) createPodInfraContainer(pod *api.Pod) (kubetypes.Docker
return "", err
}
return kubetypes.DockerID(id.ID), nil
return kubecontainer.DockerID(id.ID), nil
}
// Structure keeping information on changes that need to happen for a pod. The semantics is as follows:
@ -1617,9 +1617,9 @@ func (dm *DockerManager) createPodInfraContainer(pod *api.Pod) (kubetypes.Docker
type podContainerChangesSpec struct {
StartInfraContainer bool
InfraChanged bool
InfraContainerId kubetypes.DockerID
InfraContainerId kubecontainer.DockerID
ContainersToStart map[int]string
ContainersToKeep map[kubetypes.DockerID]int
ContainersToKeep map[kubecontainer.DockerID]int
}
func (dm *DockerManager) computePodContainerChanges(pod *api.Pod, podStatus *kubecontainer.PodStatus) (podContainerChangesSpec, error) {
@ -1630,10 +1630,10 @@ func (dm *DockerManager) computePodContainerChanges(pod *api.Pod, podStatus *kub
glog.V(4).Infof("Syncing Pod %q: %+v", format.Pod(pod), pod)
containersToStart := make(map[int]string)
containersToKeep := make(map[kubetypes.DockerID]int)
containersToKeep := make(map[kubecontainer.DockerID]int)
var err error
var podInfraContainerID kubetypes.DockerID
var podInfraContainerID kubecontainer.DockerID
var changed bool
podInfraContainerStatus := podStatus.FindContainerStatusByName(PodInfraContainerName)
if podInfraContainerStatus != nil && podInfraContainerStatus.State == kubecontainer.ContainerStateRunning {
@ -1652,7 +1652,7 @@ func (dm *DockerManager) computePodContainerChanges(pod *api.Pod, podStatus *kub
} else {
glog.V(4).Infof("Pod infra container looks good, keep it %q", format.Pod(pod))
createPodInfraContainer = false
podInfraContainerID = kubetypes.DockerID(podInfraContainerStatus.ID.ID)
podInfraContainerID = kubecontainer.DockerID(podInfraContainerStatus.ID.ID)
containersToKeep[podInfraContainerID] = -1
}
@ -1672,7 +1672,7 @@ func (dm *DockerManager) computePodContainerChanges(pod *api.Pod, podStatus *kub
continue
}
containerID := kubetypes.DockerID(containerStatus.ID.ID)
containerID := kubecontainer.DockerID(containerStatus.ID.ID)
hash := containerStatus.Hash
glog.V(3).Infof("pod %q container %q exists as %v", format.Pod(pod), container.Name, containerID)
@ -1718,7 +1718,7 @@ func (dm *DockerManager) computePodContainerChanges(pod *api.Pod, podStatus *kub
// If Infra container is the last running one, we don't want to keep it.
if !createPodInfraContainer && len(containersToStart) == 0 && len(containersToKeep) == 1 {
containersToKeep = make(map[kubetypes.DockerID]int)
containersToKeep = make(map[kubecontainer.DockerID]int)
}
return podContainerChangesSpec{
@ -1780,7 +1780,7 @@ func (dm *DockerManager) SyncPod(pod *api.Pod, _ api.PodStatus, podStatus *kubec
// Otherwise kill any running containers in this pod which are not specified as ones to keep.
runningContainerStatues := podStatus.GetRunningContainerStatuses()
for _, containerStatus := range runningContainerStatues {
_, keep := containerChanges.ContainersToKeep[kubetypes.DockerID(containerStatus.ID.ID)]
_, keep := containerChanges.ContainersToKeep[kubecontainer.DockerID(containerStatus.ID.ID)]
if !keep {
// NOTE(random-liu): Just log ID or log container status here?
glog.V(3).Infof("Killing unwanted container %+v", containerStatus)

6
pkg/kubelet/dockertools/manager_test.go
View File

@ -88,7 +88,7 @@ func newTestDockerManagerWithHTTPClient(fakeHTTPClient *fakeHTTP) (*DockerManage
proberesults.NewManager(),
containerRefManager,
&cadvisorapi.MachineInfo{},
PodInfraContainerImage,
kubetypes.PodInfraContainerImage,
0, 0, "",
kubecontainer.FakeOS{},
networkPlugin,
@ -532,7 +532,7 @@ func generatePodInfraContainerHash(pod *api.Pod) uint64 {
container := &api.Container{
Name: PodInfraContainerName,
Image: PodInfraContainerImage,
Image: kubetypes.PodInfraContainerImage,
Ports: ports,
ImagePullPolicy: podInfraContainerImagePullPolicy,
}
@ -830,7 +830,7 @@ func TestSyncPodsUnhealthy(t *testing.T) {
ID: infraContainerID,
Name: "/k8s_POD." + strconv.FormatUint(generatePodInfraContainerHash(pod), 16) + "_foo_new_12345678_42",
}})
dm.livenessManager.Set(kubetypes.DockerID(unhealthyContainerID).ContainerID(), proberesults.Failure, nil)
dm.livenessManager.Set(kubecontainer.DockerID(unhealthyContainerID).ContainerID(), proberesults.Failure, nil)
runSyncPod(t, dm, fakeDocker, pod, nil, false)

3
pkg/kubelet/kubelet.go
View File

@ -106,9 +106,6 @@ const (
// not block on anything else.
podKillingChannelCapacity = 50
// system default DNS resolver configuration
ResolvConfDefault = "/etc/resolv.conf"
// Period for performing global cleanup tasks.
housekeepingPeriod = time.Second * 2

7
pkg/kubelet/network/cni/cni.go
View File

@ -28,7 +28,6 @@ import (
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/dockertools"
"k8s.io/kubernetes/pkg/kubelet/network"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
)
const (
@ -102,7 +101,7 @@ func (plugin *cniNetworkPlugin) Name() string {
return CNIPluginName
}
func (plugin *cniNetworkPlugin) SetUpPod(namespace string, name string, id kubetypes.DockerID) error {
func (plugin *cniNetworkPlugin) SetUpPod(namespace string, name string, id kubecontainer.DockerID) error {
runtime, ok := plugin.host.GetRuntime().(*dockertools.DockerManager)
if !ok {
return fmt.Errorf("CNI execution called on non-docker runtime")
@ -121,7 +120,7 @@ func (plugin *cniNetworkPlugin) SetUpPod(namespace string, name string, id kubet
return err
}
func (plugin *cniNetworkPlugin) TearDownPod(namespace string, name string, id kubetypes.DockerID) error {
func (plugin *cniNetworkPlugin) TearDownPod(namespace string, name string, id kubecontainer.DockerID) error {
runtime, ok := plugin.host.GetRuntime().(*dockertools.DockerManager)
if !ok {
return fmt.Errorf("CNI execution called on non-docker runtime")
@ -136,7 +135,7 @@ func (plugin *cniNetworkPlugin) TearDownPod(namespace string, name string, id ku
// TODO: Use the addToNetwork function to obtain the IP of the Pod. That will assume idempotent ADD call to the plugin.
// Also fix the runtime's call to Status function to be done only in the case that the IP is lost, no need to do periodic calls
func (plugin *cniNetworkPlugin) Status(namespace string, name string, id kubetypes.DockerID) (*network.PodNetworkStatus, error) {
func (plugin *cniNetworkPlugin) Status(namespace string, name string, id kubecontainer.DockerID) (*network.PodNetworkStatus, error) {
runtime, ok := plugin.host.GetRuntime().(*dockertools.DockerManager)
if !ok {
return nil, fmt.Errorf("CNI execution called on non-docker runtime")

3
pkg/kubelet/network/cni/cni_test.go
View File

@ -38,6 +38,7 @@ import (
"k8s.io/kubernetes/pkg/kubelet/dockertools"
"k8s.io/kubernetes/pkg/kubelet/network"
proberesults "k8s.io/kubernetes/pkg/kubelet/prober/results"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
)
// The temp dir where test plugins will be stored.
@ -156,7 +157,7 @@ func newTestDockerManager() (*dockertools.DockerManager, *dockertools.FakeDocker
proberesults.NewManager(),
containerRefManager,
&cadvisorapi.MachineInfo{},
dockertools.PodInfraContainerImage,
kubetypes.PodInfraContainerImage,
0, 0, "",
kubecontainer.FakeOS{},
networkPlugin,

8
pkg/kubelet/network/exec/exec.go
View File

@ -66,8 +66,8 @@ import (
"github.com/golang/glog"
"k8s.io/kubernetes/pkg/api/unversioned"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/network"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
utilexec "k8s.io/kubernetes/pkg/util/exec"
)
@ -132,19 +132,19 @@ func (plugin *execNetworkPlugin) validate() error {
return nil
}
func (plugin *execNetworkPlugin) SetUpPod(namespace string, name string, id kubetypes.DockerID) error {
func (plugin *execNetworkPlugin) SetUpPod(namespace string, name string, id kubecontainer.DockerID) error {
out, err := utilexec.New().Command(plugin.getExecutable(), setUpCmd, namespace, name, string(id)).CombinedOutput()
glog.V(5).Infof("SetUpPod 'exec' network plugin output: %s, %v", string(out), err)
return err
}
func (plugin *execNetworkPlugin) TearDownPod(namespace string, name string, id kubetypes.DockerID) error {
func (plugin *execNetworkPlugin) TearDownPod(namespace string, name string, id kubecontainer.DockerID) error {
out, err := utilexec.New().Command(plugin.getExecutable(), tearDownCmd, namespace, name, string(id)).CombinedOutput()
glog.V(5).Infof("TearDownPod 'exec' network plugin output: %s, %v", string(out), err)
return err
}
func (plugin *execNetworkPlugin) Status(namespace string, name string, id kubetypes.DockerID) (*network.PodNetworkStatus, error) {
func (plugin *execNetworkPlugin) Status(namespace string, name string, id kubecontainer.DockerID) (*network.PodNetworkStatus, error) {
out, err := utilexec.New().Command(plugin.getExecutable(), statusCmd, namespace, name, string(id)).CombinedOutput()
glog.V(5).Infof("Status 'exec' network plugin output: %s, %v", string(out), err)
if err != nil {

13
pkg/kubelet/network/plugins.go
View File

@ -26,7 +26,6 @@ import (
"k8s.io/kubernetes/pkg/api/unversioned"
client "k8s.io/kubernetes/pkg/client/unversioned"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
utilerrors "k8s.io/kubernetes/pkg/util/errors"
"k8s.io/kubernetes/pkg/util/validation"
)
@ -46,13 +45,13 @@ type NetworkPlugin interface {
// SetUpPod is the method called after the infra container of
// the pod has been created but before the other containers of the
// pod are launched.
SetUpPod(namespace string, name string, podInfraContainerID kubetypes.DockerID) error
SetUpPod(namespace string, name string, podInfraContainerID kubecontainer.DockerID) error
// TearDownPod is the method called before a pod's infra container will be deleted
TearDownPod(namespace string, name string, podInfraContainerID kubetypes.DockerID) error
TearDownPod(namespace string, name string, podInfraContainerID kubecontainer.DockerID) error
// Status is the method called to obtain the ipv4 or ipv6 addresses of the container
Status(namespace string, name string, podInfraContainerID kubetypes.DockerID) (*PodNetworkStatus, error)
Status(namespace string, name string, podInfraContainerID kubecontainer.DockerID) (*PodNetworkStatus, error)
}
// PodNetworkStatus stores the network status of a pod (currently just the primary IP address)
@ -134,14 +133,14 @@ func (plugin *noopNetworkPlugin) Name() string {
return DefaultPluginName
}
func (plugin *noopNetworkPlugin) SetUpPod(namespace string, name string, id kubetypes.DockerID) error {
func (plugin *noopNetworkPlugin) SetUpPod(namespace string, name string, id kubecontainer.DockerID) error {
return nil
}
func (plugin *noopNetworkPlugin) TearDownPod(namespace string, name string, id kubetypes.DockerID) error {
func (plugin *noopNetworkPlugin) TearDownPod(namespace string, name string, id kubecontainer.DockerID) error {
return nil
}
func (plugin *noopNetworkPlugin) Status(namespace string, name string, id kubetypes.DockerID) (*PodNetworkStatus, error) {
func (plugin *noopNetworkPlugin) Status(namespace string, name string, id kubecontainer.DockerID) (*PodNetworkStatus, error) {
return nil, nil
}

23
pkg/kubelet/types/constants.go Normal file
View File

@ -0,0 +1,23 @@
/*
Copyright 2015 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package types
const (
PodInfraContainerImage = "gcr.io/google_containers/pause:2.0"
// system default DNS resolver configuration
ResolvConfDefault = "/etc/resolv.conf"
)

11
pkg/kubelet/types/types.go
View File

@ -21,21 +21,10 @@ import (
"time"
"k8s.io/kubernetes/pkg/api"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
)
// TODO: Reconcile custom types in kubelet/types and this subpackage
// DockerID is an ID of docker container. It is a type to make it clear when we're working with docker container Ids
type DockerID string
func (id DockerID) ContainerID() kubecontainer.ContainerID {
return kubecontainer.ContainerID{
Type: "docker",
ID: string(id),
}
}
type HttpGetter interface {
Get(url string) (*http.Response, error)
}