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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /* | ||
| Copyright 2019 The Kubernetes Authors. | ||
| 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 framework | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
|
|
||
| clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha3" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/kind/pkg/errors" | ||
| "sigs.k8s.io/kind/pkg/exec" | ||
| ) | ||
|
|
||
| // DockerLogCollector collect logs from a CAPD workload cluster. | ||
| type DockerLogCollector struct{} | ||
|
|
||
| func (k DockerLogCollector) CollectMachineLog(ctx context.Context, managementClusterClient client.Client, m *clusterv1.Machine, outputPath string) error { | ||
| containerName := fmt.Sprintf("%s-%s", m.Spec.ClusterName, m.Name) | ||
| execToPathFn := func(outputFileName, command string, args ...string) func() error { | ||
| return func() error { | ||
| f, err := fileOnHost(filepath.Join(outputPath, outputFileName)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
| return execOnContainer(containerName, f, command, args...) | ||
| } | ||
| } | ||
| return errors.AggregateConcurrent([]func() error{ | ||
| execToPathFn( | ||
| "journal.log", | ||
| "journalctl", "--no-pager", "--output=short-precise", | ||
| ), | ||
| execToPathFn( | ||
| "kern.log", | ||
| "journalctl", "--no-pager", "--output=short-precise", "-k", | ||
| ), | ||
| execToPathFn( | ||
| "kubelet-version.txt", | ||
| "kubelet", "--version", | ||
| ), | ||
| execToPathFn( | ||
| "kubelet.log", | ||
| "journalctl", "--no-pager", "--output=short-precise", "-u", "kubelet.service", | ||
| ), | ||
| execToPathFn( | ||
| "containerd-info.txt", | ||
| "crictl", "info", | ||
| ), | ||
| execToPathFn( | ||
| "containerd.log", | ||
| "journalctl", "--no-pager", "--output=short-precise", "-u", "containerd.service", | ||
| ), | ||
| }) | ||
| } | ||
|
|
||
| // fileOnHost is a helper to create a file at path | ||
| // even if the parent directory doesn't exist | ||
| // in which case it will be created with ModePerm | ||
| func fileOnHost(path string) (*os.File, error) { | ||
| if err := os.MkdirAll(filepath.Dir(path), os.ModePerm); err != nil { | ||
| return nil, err | ||
| } | ||
| return os.Create(path) | ||
| } | ||
|
|
||
| // execOnContainer is an helper that runs a command on a CAPD node/container | ||
| func execOnContainer(containerName string, fileOnHost *os.File, command string, args ...string) error { | ||
| dockerArgs := []string{ | ||
| "exec", | ||
| // run with privileges so we can remount etc.. | ||
| // this might not make sense in the most general sense, but it is | ||
| // important to many kind commands | ||
| "--privileged", | ||
| } | ||
| // specify the container and command, after this everything will be | ||
| // args the the command in the container rather than to docker | ||
| dockerArgs = append( | ||
| dockerArgs, | ||
| containerName, // ... against the container | ||
| command, // with the command specified | ||
| ) | ||
| dockerArgs = append( | ||
| dockerArgs, | ||
| // finally, with the caller args | ||
| args..., | ||
| ) | ||
|
|
||
| cmd := exec.Command("docker", dockerArgs...) | ||
| cmd.SetEnv("PATH", os.Getenv("PATH")) | ||
|
|
||
| cmd.SetStderr(fileOnHost) | ||
| cmd.SetStdout(fileOnHost) | ||
|
|
||
| return errors.WithStack(cmd.Run()) | ||
| } |