mirror of
https://github.com/kata-containers/kata-containers.git
synced 2025-06-24 14:32:33 +00:00
kata-monitor: improve detection of kata workloads
When the container engine is different than containerd or CRI-O we lack proper detection of kata workloads and consider all the pods as kata ones. Instead of querying the container engine for the lower level runtime used in each pod, check if a directory matching the pod exists in the virtualcontainers sandboxes storage path. This provides a container engine independent way to check for kata pods. Signed-off-by: Francesco Giudici <fgiudici@redhat.com>
This commit is contained in:
Francesco Giudici
parent
afad910d0e
commit
0e854f3b80
@ -41,7 +41,6 @@ require (
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github.com/urfave/cli v1.22.2
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github.com/urfave/cli v1.22.2
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github.com/vishvananda/netlink v1.1.1-0.20201029203352-d40f9887b852
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github.com/vishvananda/netlink v1.1.1-0.20201029203352-d40f9887b852
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github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae
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github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae
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github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb
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go.opentelemetry.io/otel v0.15.0
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go.opentelemetry.io/otel v0.15.0
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go.opentelemetry.io/otel/exporters/trace/jaeger v0.15.0
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go.opentelemetry.io/otel/exporters/trace/jaeger v0.15.0
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go.opentelemetry.io/otel/sdk v0.15.0
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go.opentelemetry.io/otel/sdk v0.15.0
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@ -538,8 +538,6 @@ github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17
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github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae h1:4hwBBUfQCFe3Cym0ZtKyq7L16eZUtYKs+BaHDN6mAns=
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github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae h1:4hwBBUfQCFe3Cym0ZtKyq7L16eZUtYKs+BaHDN6mAns=
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github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
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github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
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github.com/willf/bitset v1.1.11/go.mod h1:83CECat5yLh5zVOf4P1ErAgKA5UDvKtgyUABdr3+MjI=
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github.com/willf/bitset v1.1.11/go.mod h1:83CECat5yLh5zVOf4P1ErAgKA5UDvKtgyUABdr3+MjI=
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github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb h1:zGWFAtiMcyryUHoUjUJX0/lt1H2+i2Ka2n+D3DImSNo=
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github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=
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github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
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github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
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github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
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github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
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github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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@ -8,15 +8,12 @@ package katamonitor
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import (
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import (
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"context"
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"context"
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"encoding/json"
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"fmt"
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"fmt"
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"net"
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"net"
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"net/url"
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"net/url"
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"strings"
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"github.com/pkg/errors"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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"github.com/sirupsen/logrus"
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"github.com/xeipuuv/gojsonpointer"
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"google.golang.org/grpc"
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"google.golang.org/grpc"
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pb "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
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pb "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
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@ -149,61 +146,14 @@ func (km *KataMonitor) getSandboxes(sandboxMap map[string]bool) (map[string]bool
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continue
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continue
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}
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}
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request := &pb.PodSandboxStatusRequest{
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// Check if a directory associated with the POD ID exist on the kata fs:
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PodSandboxId: pod.Id,
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// if so we know that the POD is a kata one.
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Verbose: true,
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newMap[pod.Id] = checkSandboxFSExists(pod.Id)
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}
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r, err := runtimeClient.PodSandboxStatus(context.Background(), request)
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if err != nil {
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return newMap, err
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}
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lowRuntime := ""
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var res map[string]interface{}
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if err := json.Unmarshal([]byte(r.Info["info"]), &res); err != nil {
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monitorLog.WithError(err).WithField("pod", r).Error("failed to Unmarshal pod info")
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continue
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} else {
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monitorLog.WithField("pod info", res).Debug("")
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// get low level container runtime
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// containerd stores the pod runtime in "/runtimeType" while CRI-O stores it the
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// io.kubernetes.cri-o.RuntimeHandler annotation: check for both.
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const (
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containerdRuntimeMarker = "/runtimeType"
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crioRuntimeMarker = "/runtimeSpec/annotations/io.kubernetes.cri-o.RuntimeHandler"
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)
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keys := []string{containerdRuntimeMarker, crioRuntimeMarker}
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for _, key := range keys {
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pointer, _ := gojsonpointer.NewJsonPointer(key)
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rt, _, _ := pointer.Get(res)
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if rt != nil {
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if str, ok := rt.(string); ok {
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lowRuntime = str
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break
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}
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}
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}
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}
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// If lowRuntime is empty something changed in containerd/CRI-O or we are dealing with an unknown container engine.
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// Safest options is to add the POD in the list: we will be able to connect to the shim to retrieve the actual info
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// only for kata PODs.
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if lowRuntime == "" {
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monitorLog.WithField("pod", r).Warning("unable to retrieve the runtime type")
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newMap[pod.Id] = true
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continue
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}
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monitorLog.WithFields(logrus.Fields{
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monitorLog.WithFields(logrus.Fields{
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"low runtime": lowRuntime,
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"id": pod.Id,
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"is kata": newMap[pod.Id],
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"pod": pod,
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}).Debug("")
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}).Debug("")
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if strings.Contains(lowRuntime, "kata") {
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newMap[pod.Id] = true
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} else {
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newMap[pod.Id] = false
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}
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}
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}
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return newMap, nil
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return newMap, nil
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@ -10,6 +10,8 @@ import (
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"io/ioutil"
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"io/ioutil"
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"net"
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"net"
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"net/http"
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"net/http"
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"os"
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"path/filepath"
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"time"
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"time"
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cdshim "github.com/containerd/containerd/runtime/v2/shim"
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cdshim "github.com/containerd/containerd/runtime/v2/shim"
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@ -41,6 +43,13 @@ func getSandboxFS() string {
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return shim.GetSanboxesStoragePath()
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return shim.GetSanboxesStoragePath()
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}
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}
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func checkSandboxFSExists(sandboxID string) bool {
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sbsPath := filepath.Join(string(filepath.Separator), getSandboxFS(), sandboxID)
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_, err := os.Stat(sbsPath)
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return !os.IsNotExist(err)
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}
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// BuildShimClient builds and returns an http client for communicating with the provided sandbox
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// BuildShimClient builds and returns an http client for communicating with the provided sandbox
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func BuildShimClient(sandboxID string, timeout time.Duration) (*http.Client, error) {
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func BuildShimClient(sandboxID string, timeout time.Duration) (*http.Client, error) {
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return buildUnixSocketClient(shim.SocketAddress(sandboxID), timeout)
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return buildUnixSocketClient(shim.SocketAddress(sandboxID), timeout)
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202
src/runtime/vendor/github.com/xeipuuv/gojsonpointer/LICENSE-APACHE-2.0.txt
generated
vendored
202
src/runtime/vendor/github.com/xeipuuv/gojsonpointer/LICENSE-APACHE-2.0.txt
generated
vendored
@ -1,202 +0,0 @@
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|
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Apache License
|
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Version 2.0, January 2004
|
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http://www.apache.org/licenses/
|
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|
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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|
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|
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1. Definitions.
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"License" shall mean the terms and conditions for use, reproduction,
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and distribution as defined by Sections 1 through 9 of this document.
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"Licensor" shall mean the copyright owner or entity authorized by
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"Legal Entity" shall mean the union of the acting entity and all
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control with that entity. For the purposes of this definition,
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"control" means (i) the power, direct or indirect, to cause the
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direction or management of such entity, whether by contract or
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|
||||||
9. Accepting Warranty or Additional Liability. While redistributing
|
|
||||||
the Work or Derivative Works thereof, You may choose to offer,
|
|
||||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
|
||||||
or other liability obligations and/or rights consistent with this
|
|
||||||
License. However, in accepting such obligations, You may act only
|
|
||||||
on Your own behalf and on Your sole responsibility, not on behalf
|
|
||||||
of any other Contributor, and only if You agree to indemnify,
|
|
||||||
defend, and hold each Contributor harmless for any liability
|
|
||||||
incurred by, or claims asserted against, such Contributor by reason
|
|
||||||
of your accepting any such warranty or additional liability.
|
|
||||||
|
|
||||||
END OF TERMS AND CONDITIONS
|
|
||||||
|
|
||||||
APPENDIX: How to apply the Apache License to your work.
|
|
||||||
|
|
||||||
To apply the Apache License to your work, attach the following
|
|
||||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
|
||||||
replaced with your own identifying information. (Don't include
|
|
||||||
the brackets!) The text should be enclosed in the appropriate
|
|
||||||
comment syntax for the file format. We also recommend that a
|
|
||||||
file or class name and description of purpose be included on the
|
|
||||||
same "printed page" as the copyright notice for easier
|
|
||||||
identification within third-party archives.
|
|
||||||
|
|
||||||
Copyright 2015 xeipuuv
|
|
||||||
|
|
||||||
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.
|
|
||||||
41
src/runtime/vendor/github.com/xeipuuv/gojsonpointer/README.md
generated
vendored
41
src/runtime/vendor/github.com/xeipuuv/gojsonpointer/README.md
generated
vendored
@ -1,41 +0,0 @@
|
|||||||
# gojsonpointer
|
|
||||||
An implementation of JSON Pointer - Go language
|
|
||||||
|
|
||||||
## Usage
|
|
||||||
jsonText := `{
|
|
||||||
"name": "Bobby B",
|
|
||||||
"occupation": {
|
|
||||||
"title" : "King",
|
|
||||||
"years" : 15,
|
|
||||||
"heir" : "Joffrey B"
|
|
||||||
}
|
|
||||||
}`
|
|
||||||
|
|
||||||
var jsonDocument map[string]interface{}
|
|
||||||
json.Unmarshal([]byte(jsonText), &jsonDocument)
|
|
||||||
|
|
||||||
//create a JSON pointer
|
|
||||||
pointerString := "/occupation/title"
|
|
||||||
pointer, _ := NewJsonPointer(pointerString)
|
|
||||||
|
|
||||||
//SET a new value for the "title" in the document
|
|
||||||
pointer.Set(jsonDocument, "Supreme Leader of Westeros")
|
|
||||||
|
|
||||||
//GET the new "title" from the document
|
|
||||||
title, _, _ := pointer.Get(jsonDocument)
|
|
||||||
fmt.Println(title) //outputs "Supreme Leader of Westeros"
|
|
||||||
|
|
||||||
//DELETE the "heir" from the document
|
|
||||||
deletePointer := NewJsonPointer("/occupation/heir")
|
|
||||||
deletePointer.Delete(jsonDocument)
|
|
||||||
|
|
||||||
b, _ := json.Marshal(jsonDocument)
|
|
||||||
fmt.Println(string(b))
|
|
||||||
//outputs `{"name":"Bobby B","occupation":{"title":"Supreme Leader of Westeros","years":15}}`
|
|
||||||
|
|
||||||
|
|
||||||
## References
|
|
||||||
https://tools.ietf.org/html/rfc6901
|
|
||||||
|
|
||||||
### Note
|
|
||||||
The 4.Evaluation part of the previous reference, starting with 'If the currently referenced value is a JSON array, the reference token MUST contain either...' is not implemented.
|
|
||||||
211
src/runtime/vendor/github.com/xeipuuv/gojsonpointer/pointer.go
generated
vendored
211
src/runtime/vendor/github.com/xeipuuv/gojsonpointer/pointer.go
generated
vendored
@ -1,211 +0,0 @@
|
|||||||
// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
|
|
||||||
//
|
|
||||||
// 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.
|
|
||||||
|
|
||||||
// author xeipuuv
|
|
||||||
// author-github https://github.com/xeipuuv
|
|
||||||
// author-mail xeipuuv@gmail.com
|
|
||||||
//
|
|
||||||
// repository-name gojsonpointer
|
|
||||||
// repository-desc An implementation of JSON Pointer - Go language
|
|
||||||
//
|
|
||||||
// description Main and unique file.
|
|
||||||
//
|
|
||||||
// created 25-02-2013
|
|
||||||
|
|
||||||
package gojsonpointer
|
|
||||||
|
|
||||||
import (
|
|
||||||
"errors"
|
|
||||||
"fmt"
|
|
||||||
"reflect"
|
|
||||||
"strconv"
|
|
||||||
"strings"
|
|
||||||
)
|
|
||||||
|
|
||||||
const (
|
|
||||||
const_empty_pointer = ``
|
|
||||||
const_pointer_separator = `/`
|
|
||||||
|
|
||||||
const_invalid_start = `JSON pointer must be empty or start with a "` + const_pointer_separator + `"`
|
|
||||||
)
|
|
||||||
|
|
||||||
type implStruct struct {
|
|
||||||
mode string // "SET" or "GET"
|
|
||||||
|
|
||||||
inDocument interface{}
|
|
||||||
|
|
||||||
setInValue interface{}
|
|
||||||
|
|
||||||
getOutNode interface{}
|
|
||||||
getOutKind reflect.Kind
|
|
||||||
outError error
|
|
||||||
}
|
|
||||||
|
|
||||||
type JsonPointer struct {
|
|
||||||
referenceTokens []string
|
|
||||||
}
|
|
||||||
|
|
||||||
// NewJsonPointer parses the given string JSON pointer and returns an object
|
|
||||||
func NewJsonPointer(jsonPointerString string) (p JsonPointer, err error) {
|
|
||||||
|
|
||||||
// Pointer to the root of the document
|
|
||||||
if len(jsonPointerString) == 0 {
|
|
||||||
// Keep referenceTokens nil
|
|
||||||
return
|
|
||||||
}
|
|
||||||
if jsonPointerString[0] != '/' {
|
|
||||||
return p, errors.New(const_invalid_start)
|
|
||||||
}
|
|
||||||
|
|
||||||
p.referenceTokens = strings.Split(jsonPointerString[1:], const_pointer_separator)
|
|
||||||
return
|
|
||||||
}
|
|
||||||
|
|
||||||
// Uses the pointer to retrieve a value from a JSON document
|
|
||||||
func (p *JsonPointer) Get(document interface{}) (interface{}, reflect.Kind, error) {
|
|
||||||
|
|
||||||
is := &implStruct{mode: "GET", inDocument: document}
|
|
||||||
p.implementation(is)
|
|
||||||
return is.getOutNode, is.getOutKind, is.outError
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
// Uses the pointer to update a value from a JSON document
|
|
||||||
func (p *JsonPointer) Set(document interface{}, value interface{}) (interface{}, error) {
|
|
||||||
|
|
||||||
is := &implStruct{mode: "SET", inDocument: document, setInValue: value}
|
|
||||||
p.implementation(is)
|
|
||||||
return document, is.outError
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
// Uses the pointer to delete a value from a JSON document
|
|
||||||
func (p *JsonPointer) Delete(document interface{}) (interface{}, error) {
|
|
||||||
is := &implStruct{mode: "DEL", inDocument: document}
|
|
||||||
p.implementation(is)
|
|
||||||
return document, is.outError
|
|
||||||
}
|
|
||||||
|
|
||||||
// Both Get and Set functions use the same implementation to avoid code duplication
|
|
||||||
func (p *JsonPointer) implementation(i *implStruct) {
|
|
||||||
|
|
||||||
kind := reflect.Invalid
|
|
||||||
|
|
||||||
// Full document when empty
|
|
||||||
if len(p.referenceTokens) == 0 {
|
|
||||||
i.getOutNode = i.inDocument
|
|
||||||
i.outError = nil
|
|
||||||
i.getOutKind = kind
|
|
||||||
i.outError = nil
|
|
||||||
return
|
|
||||||
}
|
|
||||||
|
|
||||||
node := i.inDocument
|
|
||||||
|
|
||||||
previousNodes := make([]interface{}, len(p.referenceTokens))
|
|
||||||
previousTokens := make([]string, len(p.referenceTokens))
|
|
||||||
|
|
||||||
for ti, token := range p.referenceTokens {
|
|
||||||
|
|
||||||
isLastToken := ti == len(p.referenceTokens)-1
|
|
||||||
previousNodes[ti] = node
|
|
||||||
previousTokens[ti] = token
|
|
||||||
|
|
||||||
switch v := node.(type) {
|
|
||||||
|
|
||||||
case map[string]interface{}:
|
|
||||||
decodedToken := decodeReferenceToken(token)
|
|
||||||
if _, ok := v[decodedToken]; ok {
|
|
||||||
node = v[decodedToken]
|
|
||||||
if isLastToken && i.mode == "SET" {
|
|
||||||
v[decodedToken] = i.setInValue
|
|
||||||
} else if isLastToken && i.mode == "DEL" {
|
|
||||||
delete(v, decodedToken)
|
|
||||||
}
|
|
||||||
} else if isLastToken && i.mode == "SET" {
|
|
||||||
v[decodedToken] = i.setInValue
|
|
||||||
} else {
|
|
||||||
i.outError = fmt.Errorf("Object has no key '%s'", decodedToken)
|
|
||||||
i.getOutKind = reflect.Map
|
|
||||||
i.getOutNode = nil
|
|
||||||
return
|
|
||||||
}
|
|
||||||
|
|
||||||
case []interface{}:
|
|
||||||
tokenIndex, err := strconv.Atoi(token)
|
|
||||||
if err != nil {
|
|
||||||
i.outError = fmt.Errorf("Invalid array index '%s'", token)
|
|
||||||
i.getOutKind = reflect.Slice
|
|
||||||
i.getOutNode = nil
|
|
||||||
return
|
|
||||||
}
|
|
||||||
if tokenIndex < 0 || tokenIndex >= len(v) {
|
|
||||||
i.outError = fmt.Errorf("Out of bound array[0,%d] index '%d'", len(v), tokenIndex)
|
|
||||||
i.getOutKind = reflect.Slice
|
|
||||||
i.getOutNode = nil
|
|
||||||
return
|
|
||||||
}
|
|
||||||
|
|
||||||
node = v[tokenIndex]
|
|
||||||
if isLastToken && i.mode == "SET" {
|
|
||||||
v[tokenIndex] = i.setInValue
|
|
||||||
} else if isLastToken && i.mode == "DEL" {
|
|
||||||
v[tokenIndex] = v[len(v)-1]
|
|
||||||
v[len(v)-1] = nil
|
|
||||||
v = v[:len(v)-1]
|
|
||||||
previousNodes[ti-1].(map[string]interface{})[previousTokens[ti-1]] = v
|
|
||||||
}
|
|
||||||
|
|
||||||
default:
|
|
||||||
i.outError = fmt.Errorf("Invalid token reference '%s'", token)
|
|
||||||
i.getOutKind = reflect.ValueOf(node).Kind()
|
|
||||||
i.getOutNode = nil
|
|
||||||
return
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
i.getOutNode = node
|
|
||||||
i.getOutKind = reflect.ValueOf(node).Kind()
|
|
||||||
i.outError = nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Pointer to string representation function
|
|
||||||
func (p *JsonPointer) String() string {
|
|
||||||
|
|
||||||
if len(p.referenceTokens) == 0 {
|
|
||||||
return const_empty_pointer
|
|
||||||
}
|
|
||||||
|
|
||||||
pointerString := const_pointer_separator + strings.Join(p.referenceTokens, const_pointer_separator)
|
|
||||||
|
|
||||||
return pointerString
|
|
||||||
}
|
|
||||||
|
|
||||||
// Specific JSON pointer encoding here
|
|
||||||
// ~0 => ~
|
|
||||||
// ~1 => /
|
|
||||||
// ... and vice versa
|
|
||||||
|
|
||||||
func decodeReferenceToken(token string) string {
|
|
||||||
step1 := strings.Replace(token, `~1`, `/`, -1)
|
|
||||||
step2 := strings.Replace(step1, `~0`, `~`, -1)
|
|
||||||
return step2
|
|
||||||
}
|
|
||||||
|
|
||||||
func encodeReferenceToken(token string) string {
|
|
||||||
step1 := strings.Replace(token, `~`, `~0`, -1)
|
|
||||||
step2 := strings.Replace(step1, `/`, `~1`, -1)
|
|
||||||
return step2
|
|
||||||
}
|
|
||||||
3
src/runtime/vendor/modules.txt
vendored
3
src/runtime/vendor/modules.txt
vendored
@ -260,9 +260,6 @@ github.com/vishvananda/netlink/nl
|
|||||||
# github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae
|
# github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae
|
||||||
## explicit
|
## explicit
|
||||||
github.com/vishvananda/netns
|
github.com/vishvananda/netns
|
||||||
# github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb
|
|
||||||
## explicit
|
|
||||||
github.com/xeipuuv/gojsonpointer
|
|
||||||
# go.opencensus.io v0.22.4
|
# go.opencensus.io v0.22.4
|
||||||
go.opencensus.io
|
go.opencensus.io
|
||||||
go.opencensus.io/internal
|
go.opencensus.io/internal
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user