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Rewrite fetch_target_logs.sh in Golang
Signed-off-by: peppi-lotta <peppi-lotta.saari@est.tech>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,232 @@ | ||
| package e2e | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "os/exec" | ||
| "path" | ||
| "path/filepath" | ||
|
|
||
| . "github.com/onsi/ginkgo/v2" | ||
| . "github.com/onsi/gomega" | ||
| corev1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/tools/clientcmd" | ||
| "k8s.io/kubectl/pkg/describe" | ||
| clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1" | ||
| expv1 "sigs.k8s.io/cluster-api/exp/api/v1beta1" | ||
| "sigs.k8s.io/cluster-api/test/framework" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| type Metal3LogCollector struct{} | ||
|
|
||
| // CollectMachineLog collects specific logs from machines. | ||
| func (Metal3LogCollector) CollectMachineLog(ctx context.Context, cli client.Client, m *clusterv1.Machine, outputPath string) error { | ||
| VMName, err := MachineToVMName(ctx, cli, m) | ||
| if err != nil { | ||
| return fmt.Errorf("error while fetching the VM name: %w", err) | ||
| } | ||
|
|
||
| qemuFolder := path.Join(outputPath, VMName) | ||
| if err := os.MkdirAll(qemuFolder, 0o750); err != nil { | ||
| fmt.Fprintf(GinkgoWriter, "couldn't create directory %q : %s\n", qemuFolder, err) | ||
| } | ||
|
|
||
| serialLog := fmt.Sprintf("/var/log/libvirt/qemu/%s-serial0.log", VMName) | ||
| if _, err := os.Stat(serialLog); os.IsNotExist(err) { | ||
| return fmt.Errorf("error finding the serial log: %w", err) | ||
| } | ||
|
|
||
| copyCmd := fmt.Sprintf("sudo cp %s %s", serialLog, qemuFolder) | ||
| cmd := exec.Command("/bin/sh", "-c", copyCmd) // #nosec G204:gosec | ||
| if output, err := cmd.Output(); err != nil { | ||
| return fmt.Errorf("something went wrong when executing '%s': %w, output: %s", cmd.String(), err, output) | ||
| } | ||
| setPermsCmd := fmt.Sprintf("sudo chmod -v 777 %s", path.Join(qemuFolder, filepath.Base(serialLog))) | ||
| cmd = exec.Command("/bin/sh", "-c", setPermsCmd) // #nosec G204:gosec | ||
| output, err := cmd.Output() | ||
| if err != nil { | ||
| return fmt.Errorf("error changing file permissions after copying: %w, output: %s", err, output) | ||
| } | ||
|
|
||
| kubeadmCP := framework.GetKubeadmControlPlaneByCluster(ctx, framework.GetKubeadmControlPlaneByClusterInput{ | ||
| Lister: cli, | ||
| ClusterName: m.Spec.ClusterName, | ||
| Namespace: m.Namespace, | ||
| }) | ||
|
|
||
| if len(kubeadmCP.Spec.KubeadmConfigSpec.Users) < 1 { | ||
| return fmt.Errorf("no valid credentials found: KubeadmConfigSpec.Users is empty") | ||
| } | ||
| creds := kubeadmCP.Spec.KubeadmConfigSpec.Users[0] | ||
|
|
||
| // get baremetal ip pool for retreiving ip addresses of controlpane and worker nodes | ||
| baremetalv4Pool, _ := GetIPPools(ctx, cli, m.Spec.ClusterName, m.Namespace) | ||
| Expect(baremetalv4Pool).ToNot(BeEmpty()) | ||
|
|
||
| ip, err := MachineToIPAddress(ctx, cli, m, baremetalv4Pool[0]) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't get IP address of machine: %w", err) | ||
| } | ||
|
|
||
| commands := map[string]string{ | ||
| "cloud-final.log": "journalctl --no-pager -u cloud-final", | ||
| "kubelet.log": "journalctl --no-pager -u kubelet.service", | ||
| "containerd.log": "journalctl --no-pager -u containerd.service", | ||
| } | ||
|
|
||
| for title, cmd := range commands { | ||
| err = runCommand(outputPath, title, ip, creds.Name, cmd) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't gather logs: %w", err) | ||
| } | ||
| } | ||
|
|
||
| Logf("Successfully collected logs for machine %s", m.Name) | ||
| return nil | ||
| } | ||
|
|
||
| func (Metal3LogCollector) CollectInfrastructureLogs(_ context.Context, _ client.Client, _ *clusterv1.Cluster, _ string) error { | ||
| return fmt.Errorf("CollectInfrastructureLogs not implemented") | ||
| } | ||
|
|
||
| func (Metal3LogCollector) CollectMachinePoolLog(_ context.Context, _ client.Client, _ *expv1.MachinePool, _ string) error { | ||
| return fmt.Errorf("CollectMachinePoolLog not implemented") | ||
| } | ||
|
|
||
| func FetchClusterLogs(clusterProxy framework.ClusterProxy, outputPath string) error { | ||
| dirName := "/tmp/" + outputPath | ||
| err := os.MkdirAll(dirName, 0775) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't list to containers: %v", err) | ||
| } | ||
|
|
||
| kubeconfigPath := clusterProxy.GetKubeconfigPath() | ||
| // use the current context in kubeconfig | ||
| config, err := clientcmd.BuildConfigFromFlags("", kubeconfigPath) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't build kubeconfig: %v", err) | ||
| } | ||
|
|
||
| // create the clientset | ||
| clientset, err := kubernetes.NewForConfig(config) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't create clientset: %v", err) | ||
| } | ||
|
|
||
| // Print the Pods' information to file | ||
| // This does the same thing as: | ||
| // kubectl --kubeconfig="${KUBECONFIG_WORKLOAD}" get pods -A | ||
| out, err := exec.Command("kubectl", "get", "pods", "-A").Output() | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't get pods: %v", err) | ||
| } | ||
| file := filepath.Join(dirName, "pods.log") | ||
| err = os.WriteFile(file, out, 0644) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't write to file: %v", err) | ||
| } | ||
|
|
||
| // Get all namespaces | ||
| namespaces, err := clientset.CoreV1().Namespaces().List(context.Background(), metav1.ListOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't get namespaces: %v", err) | ||
| } | ||
| for _, namespace := range namespaces.Items { | ||
| namespaceDir := filepath.Join(dirName, namespace.Name) | ||
|
|
||
| // Get all pods in the namespace | ||
| pods, err := clientset.CoreV1().Pods(namespace.Name).List(context.Background(), metav1.ListOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't list pods in namespace %s: %v", namespace.Name, err) | ||
| } | ||
| for _, pod := range pods.Items { | ||
| // Create a directory for each pod and the path to it if | ||
| // it does not exist | ||
| podDir := filepath.Join(namespaceDir, pod.Name) | ||
| err = os.MkdirAll(podDir, 0775) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't write to file: %v", err) | ||
| } | ||
|
|
||
| // Get detailed information about the Pod | ||
| // This does the same thing as: | ||
| // kubectl --kubeconfig="${KUBECONFIG_WORKLOAD}" describe pods -n "${NAMESPACE}" "${POD}" | ||
| describerSettings := describe.DescriberSettings{ | ||
| ShowEvents: true, | ||
| } | ||
| podDescriber := describe.PodDescriber{ | ||
| Interface: clientset, | ||
| } | ||
| podDescription, err := podDescriber.Describe(namespace.Name, pod.Name, describerSettings) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't describe pod %s in namespace %s: %v", pod.Name, namespace.Name, err) | ||
| } | ||
|
|
||
| // Print the Pod information to file | ||
| file := filepath.Join(podDir, "stdout_describe.log") | ||
| err = os.WriteFile(file, []byte(podDescription), 0644) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't write to file: %v", err) | ||
| } | ||
|
|
||
| // Get containers of the Pod | ||
| for _, container := range pod.Spec.Containers { | ||
| // Create a directory for each container | ||
| containerDir := filepath.Join(podDir, container.Name) | ||
|
|
||
| err := CollectContainerLogs(namespace.Name, pod.Name, container.Name, clientset, containerDir) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
| } | ||
| } | ||
| fmt.Println("Successfully collected cluster logs.") | ||
| return nil | ||
| } | ||
|
|
||
| func CollectContainerLogs(namespace string, podName string, containerName string, clientset *kubernetes.Clientset, outputPath string) error { | ||
| err := os.MkdirAll(outputPath, 0775) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't list to containers: %v", err) | ||
| } | ||
|
|
||
| // Get logs of a container | ||
| // Does the same thing as: | ||
| // kubectl --kubeconfig="${KUBECONFIG_WORKLOAD}" logs -n "${NAMESPACE}" "${POD}" "${CONTAINER}" | ||
| podLogOptions := corev1.PodLogOptions{ | ||
| Container: containerName, | ||
| } | ||
| podLogs, err := clientset.CoreV1().Pods(namespace).GetLogs(podName, &podLogOptions).Stream(context.Background()) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't get container logs: %v", err) | ||
| } | ||
| defer podLogs.Close() | ||
|
|
||
| // Read the logs into a string | ||
| buf := new(bytes.Buffer) | ||
| _, err = io.Copy(buf, podLogs) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't buffer container logs: %v", err) | ||
| } | ||
| podStr := buf.String() | ||
|
|
||
| // Print the Pod information to file | ||
| file := filepath.Join(outputPath, "stdout.log") | ||
| err = os.WriteFile(file, []byte(podStr), 0644) | ||
| if err != nil { | ||
| return fmt.Errorf("couldn't write to file: %v", err) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func FetchManifests(_ framework.ClusterProxy) error { | ||
| return fmt.Errorf("FetchManifests not implemented") | ||
| } |
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