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c671552a27
rke/network/canal.go
moelsayed 0ee002b2cf Add user-configurable images 
Refactor configuration defaults
 Add comments to config
 Add configurable utility images
 Add configurable network plugin images
 Add configurable kubedns images
2017-12-05 20:34:54 +02:00

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package network
func GetCanalManifest(canalConfig map[string]string) string {
return `# This ConfigMap can be used to configure a self-hosted Canal installation.
kind: ConfigMap
apiVersion: v1
metadata:
name: canal-config
namespace: kube-system
data:
# The interface used by canal for host <-> host communication.
# If left blank, then the interface is chosen using the node's
# default route.
canal_iface: ""
# Whether or not to masquerade traffic to destinations not within
# the pod network.
masquerade: "true"
# The CNI network configuration to install on each node.
cni_network_config: |-
{
"name": "rke-pod-network",
"cniVersion": "0.3.0",
"plugins": [
{
"type": "calico",
"log_level": "info",
"datastore_type": "kubernetes",
"nodename": "__KUBERNETES_NODE_NAME__",
"ipam": {
"type": "host-local",
"subnet": "usePodCidr"
},
"policy": {
"type": "k8s",
"k8s_api_root": "` + canalConfig[APIRoot] + `",
"k8s_client_certificate": "` + canalConfig[ClientCert] + `",
"k8s_client_key": "` + canalConfig[ClientKey] + `",
"k8s_certificate_authority": "` + canalConfig[ClientCA] + `"
},
"kubernetes": {
"kubeconfig": "` + canalConfig[KubeCfg] + `"
}
},
{
"type": "portmap",
"capabilities": {"portMappings": true},
"snat": true
}
]
}
# Flannel network configuration. Mounted into the flannel container.
net-conf.json: |
{
"Network": "` + canalConfig[ClusterCIDR] + `",
"Backend": {
"Type": "vxlan"
}
}
---
# This manifest installs the calico/node container, as well
# as the Calico CNI plugins and network config on
# each master and worker node in a Kubernetes cluster.
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
name: canal
namespace: kube-system
labels:
k8s-app: canal
spec:
selector:
matchLabels:
k8s-app: canal
template:
metadata:
labels:
k8s-app: canal
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
hostNetwork: true
serviceAccountName: canal
tolerations:
# this taint is set by all kubelets running '--cloud-provider=external'
# so we should tolerate it to schedule the canal pods
- key: node.cloudprovider.kubernetes.io/uninitialized
value: "true"
effect: NoSchedule
# Allow the pod to run on the master. This is required for
# the master to communicate with pods.
- key: "node-role.kubernetes.io/master"
operator: "Exists"
# Mark the pod as a critical add-on for rescheduling.
- key: "CriticalAddonsOnly"
operator: "Exists"
# Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
# deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
terminationGracePeriodSeconds: 0
containers:
# Runs calico/node container on each Kubernetes node. This
# container programs network policy and routes on each
# host.
- name: calico-node
image: ` + canalConfig[NodeImage] + `
env:
# Use Kubernetes API as the backing datastore.
- name: DATASTORE_TYPE
value: "kubernetes"
# Enable felix logging.
- name: FELIX_LOGSEVERITYSYS
value: "info"
# Don't enable BGP.
- name: CALICO_NETWORKING_BACKEND
value: "none"
# Cluster type to identify the deployment type
- name: CLUSTER_TYPE
value: "k8s,canal"
# Disable file logging so 'kubectl logs' works.
- name: CALICO_DISABLE_FILE_LOGGING
value: "true"
# Period, in seconds, at which felix re-applies all iptables state
- name: FELIX_IPTABLESREFRESHINTERVAL
value: "60"
# Disable IPV6 support in Felix.
- name: FELIX_IPV6SUPPORT
value: "false"
# Wait for the datastore.
- name: WAIT_FOR_DATASTORE
value: "true"
# No IP address needed.
- name: IP
value: ""
- name: NODENAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
# Set Felix endpoint to host default action to ACCEPT.
- name: FELIX_DEFAULTENDPOINTTOHOSTACTION
value: "ACCEPT"
- name: FELIX_HEALTHENABLED
value: "true"
securityContext:
privileged: true
resources:
requests:
cpu: 250m
livenessProbe:
httpGet:
path: /liveness
port: 9099
periodSeconds: 10
initialDelaySeconds: 10
failureThreshold: 6
readinessProbe:
httpGet:
path: /readiness
port: 9099
periodSeconds: 10
volumeMounts:
- mountPath: /lib/modules
name: lib-modules
readOnly: true
- mountPath: /var/run/calico
name: var-run-calico
readOnly: false
- mountPath: /etc/kubernetes
name: etc-kubernetes
# This container installs the Calico CNI binaries
# and CNI network config file on each node.
- name: install-cni
image: ` + canalConfig[CNIImage] + `
command: ["/install-cni.sh"]
env:
- name: CNI_CONF_NAME
value: "10-calico.conflist"
# The CNI network config to install on each node.
- name: CNI_NETWORK_CONFIG
valueFrom:
configMapKeyRef:
name: canal-config
key: cni_network_config
- name: KUBERNETES_NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
volumeMounts:
- mountPath: /host/opt/cni/bin
name: cni-bin-dir
- mountPath: /host/etc/cni/net.d
name: cni-net-dir
- mountPath: /etc/kubernetes
name: etc-kubernetes
# This container runs flannel using the kube-subnet-mgr backend
# for allocating subnets.
- name: kube-flannel
image: ` + canalConfig[FlannelImage] + `
command: [ "/opt/bin/flanneld", "--ip-masq", "--kube-subnet-mgr" ]
securityContext:
privileged: true
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: FLANNELD_IFACE
valueFrom:
configMapKeyRef:
name: canal-config
key: canal_iface
- name: FLANNELD_IP_MASQ
valueFrom:
configMapKeyRef:
name: canal-config
key: masquerade
volumeMounts:
- name: run
mountPath: /run
- name: flannel-cfg
mountPath: /etc/kube-flannel/
volumes:
# Used by calico/node.
- name: lib-modules
hostPath:
path: /lib/modules
- name: var-run-calico
hostPath:
path: /var/run/calico
# Used to install CNI.
- name: cni-bin-dir
hostPath:
path: /opt/cni/bin
- name: cni-net-dir
hostPath:
path: /etc/cni/net.d
# Used by flannel.
- name: run
hostPath:
path: /run
- name: flannel-cfg
configMap:
name: canal-config
- name: etc-kubernetes
hostPath:
path: /etc/kubernetes
# Create all the CustomResourceDefinitions needed for
# Calico policy-only mode.
---
apiVersion: apiextensions.k8s.io/v1beta1
description: Calico Global Felix Configuration
kind: CustomResourceDefinition
metadata:
name: globalfelixconfigs.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: GlobalFelixConfig
plural: globalfelixconfigs
singular: globalfelixconfig
---
apiVersion: apiextensions.k8s.io/v1beta1
description: Calico Global BGP Configuration
kind: CustomResourceDefinition
metadata:
name: globalbgpconfigs.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: GlobalBGPConfig
plural: globalbgpconfigs
singular: globalbgpconfig
---
apiVersion: apiextensions.k8s.io/v1beta1
description: Calico IP Pools
kind: CustomResourceDefinition
metadata:
name: ippools.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: IPPool
plural: ippools
singular: ippool
---
apiVersion: apiextensions.k8s.io/v1beta1
description: Calico Global Network Policies
kind: CustomResourceDefinition
metadata:
name: globalnetworkpolicies.crd.projectcalico.org
spec:
scope: Cluster
group: crd.projectcalico.org
version: v1
names:
kind: GlobalNetworkPolicy
plural: globalnetworkpolicies
singular: globalnetworkpolicy
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: canal
namespace: kube-system
`
}
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