[ Cmii ] [ Octopus ] - reformat agent-go - 1
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zeaslity
365
agent-go/a_executor/K8sFunction.go
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365
agent-go/a_executor/K8sFunction.go
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package a_executor
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/api/errors"
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"os"
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"strings"
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"sync"
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"time"
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"context"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/clientcmd"
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)
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var k8sConfigFilePath = "/root/wdd/kube_config_cluster.yml"
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var k8sClient = newK8sClientInstance()
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func newK8sClientInstance() *kubernetes.Clientset {
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once := sync.Once{}
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if !BasicFileExistAndNotNull(k8sConfigFilePath) {
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log.WarnF("[newK8sClientInstance] - k8s config %s does not exist ! ", k8sConfigFilePath)
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return nil
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}
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var client *kubernetes.Clientset
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once.Do(func() {
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// 使用kubeconfig文件初始化客户端
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config, err := clientcmd.BuildConfigFromFlags("", k8sConfigFilePath)
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if err != nil {
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log.ErrorF("[newK8sClientInstance] - load from %s error !", k8sConfigFilePath)
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}
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client, err = kubernetes.NewForConfig(config)
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if err != nil {
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log.Error("[newK8sClientInstance] - create k8s client error !")
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}
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})
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return client
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}
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func K8sCheckPodStatusTimeout(specificPod string, supreme string, waitTimeOut int) bool {
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if k8sClient == nil {
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// this should be the first call of k8s function
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k8sClient = newK8sClientInstance()
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if k8sClient == nil {
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log.ErrorF("k8s client is nil, run k8s function error !")
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return false
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}
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}
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// 设置超时时间和时间间隔
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timeout := time.After(time.Duration(waitTimeOut) * time.Second)
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tick := time.Tick(5 * time.Second)
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// 监控Pod状态
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for {
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select {
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case <-timeout:
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log.ErrorF("[K8sCheckPodStatusTimeout] - 命名空间: [%s], Pod名称: [%s], 状态: 失败!", supreme, specificPod)
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return false
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case <-tick:
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pod, err := k8sClient.CoreV1().Pods(supreme).Get(context.TODO(), specificPod, metav1.GetOptions{})
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if err != nil {
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log.ErrorF("[K8sCheckPodStatusTimeout] - 命名空间: [%s], Pod名称: [%s], 获取Pod信息失败 ！", supreme, err.Error())
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} else {
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log.DebugF("[K8sCheckPodStatusTimeout] - 命名空间: [%s], Pod名称: [%s], 状态: [%s]", supreme, pod.Name, pod.Status.Phase)
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if pod.Status.Phase == corev1.PodRunning || pod.Status.Phase == corev1.PodSucceeded {
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return true
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}
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}
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}
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}
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}
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func K8sCheckDeploymentStatusTimeout(specificDeployment string, supreme string, waitTimeOut int) bool {
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if k8sClient == nil {
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// this should be the first call of k8s function
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k8sClient = newK8sClientInstance()
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if k8sClient == nil {
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log.ErrorF("k8s client is nil, run k8s function error !")
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return false
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}
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}
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// 设置超时时间和时间间隔
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timeout := time.After(time.Duration(waitTimeOut) * time.Second)
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tick := time.Tick(5 * time.Second)
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// 监控Pod状态
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for {
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select {
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case <-timeout:
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log.ErrorF("[K8sCheckDeploymentStatusTimeout] - 命名空间: %s, Deployment名称: %s, 状态: 失败!\n", supreme, specificDeployment)
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return false
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case <-tick:
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deployment, err := k8sClient.AppsV1().Deployments(supreme).Get(context.TODO(), specificDeployment, metav1.GetOptions{})
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if err != nil {
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log.ErrorF("[K8sCheckDeploymentStatusTimeout] - 命名空间: [%s], Deployment 名称: [%s], 获取Deployment信息失败 ！", supreme, err.Error())
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} else {
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log.DebugF("[K8sCheckDeploymentStatusTimeout] - 命名空间: [ %s ], Deployment: [ %s ] 还有Pods未处于Running状态 (Ready: %d, Total: %d)\n", supreme, deployment.Name, deployment.Status.ReadyReplicas, deployment.Status.Replicas)
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if deployment.Status.ReadyReplicas == deployment.Status.Replicas {
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return true
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}
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}
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}
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}
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}
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func K8sListPVCInNamespace(supreme string) (bool, []string) {
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if k8sClient == nil {
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// this should be the first call of k8s function
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k8sClient = newK8sClientInstance()
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if k8sClient == nil {
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log.ErrorF("k8s client is nil, run k8s function error !")
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return false, []string{
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"[K8sListPVCInNamespace] - k8s client not exits !",
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}
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}
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}
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pvcs, err := k8sClient.CoreV1().PersistentVolumeClaims(supreme).List(context.TODO(), metav1.ListOptions{})
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if err != nil {
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log.ErrorF("[K8sListPVCInNamespace] - error list pvc list in namespace %s", supreme)
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return false, nil
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}
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var pvcList []string
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for _, pvc := range pvcs.Items {
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pvcList = append(pvcList, pvc.Name)
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}
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log.DebugF("K8sListPVCInNamespace - all pvc in namespace of [ %s ] are %v", supreme, pvcList)
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return true, pvcList
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}
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func K8sCheckPVCStatusTimeOut(specificPvcName string, supreme string, waitTimeOut int) bool {
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if k8sClient == nil {
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// this should be the first call of k8s function
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k8sClient = newK8sClientInstance()
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if k8sClient == nil {
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log.ErrorF("k8s client is nil, run k8s function error !")
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return false
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}
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}
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// 设置超时时间和时间间隔
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timeout := time.After(time.Duration(waitTimeOut) * time.Second)
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tick := time.Tick(5 * time.Second)
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// 监控Pod状态
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for {
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select {
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case <-timeout:
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log.ErrorF("[K8sCheckPVCStatusTimeOut] - 命名空间: %s, PVC 名称: %s, 状态: 失败! ", supreme, specificPvcName)
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return false
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case <-tick:
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pvc, err := k8sClient.CoreV1().PersistentVolumeClaims(supreme).Get(context.TODO(), specificPvcName, metav1.GetOptions{})
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if err != nil {
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log.ErrorF("[K8sCheckPVCStatusTimeOut] - 命名空间: [ %s ], 获取 PVC [%s] 信息失败: %s ", supreme, specificPvcName, err.Error())
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}
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if pvc.Status.Phase == corev1.ClaimBound {
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log.DebugF("[K8sCheckPVCStatusTimeOut] - PVC %s in namespace %s is running", specificPvcName, supreme)
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return true
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} else {
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log.WarnF("[K8sCheckPVCStatusTimeOut] - PVC %s in namespace %s run failed !", specificPvcName, supreme)
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return false
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}
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}
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}
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}
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func KubectlCheckPodStatus(specific string, supreme string) bool {
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if !BasicCommandExists("kubectl") {
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log.Error("kubectl命令不存在，无法查看Pod状态，请查看！")
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}
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ok, resultLog := AllCommandExecutor([]string{
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"kubectl", "-n", supreme, "get", "pod", specific, "-o", "jsonpath='{.status.phase}'",
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})
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if !ok {
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return false
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}
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for _, resultLine := range resultLog {
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if strings.HasPrefix(resultLine, "Running") {
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return true
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}
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}
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return false
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}
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func KubectlApplyExec(resourcesYamlFile string) (bool, []string) {
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// check kubectl
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if !BasicCommandExistByPath("kubectl") {
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return false, []string{
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"[KubectlApplyExec] - kubectl command not exist !",
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}
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}
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// check resourcesYamlFile
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if !BasicFileExistAndNotNull(resourcesYamlFile) {
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return false, []string{
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fmt.Sprintf("[KubectlApplyExec] - wrong resourcesYamlFile %s not exist !", resourcesYamlFile),
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}
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}
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// apply -f
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ok, resultLog := AllCommandExecutor([]string{
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"/usr/local/bin/kubectl",
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"apply",
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"-f",
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resourcesYamlFile,
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})
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if !ok {
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return false, resultLog
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}
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return true, append(resultLog,
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fmt.Sprintf("[KubectlApplyExec] - %s apply success!", resourcesYamlFile))
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}
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func KubectlDeleteExec(resourcesYamlFile string) (bool, []string) {
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// check kubectl
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if !BasicCommandExistByPath("kubectl") {
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return false, []string{
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"[KubectlDeleteExec] - kubectl command not exist !",
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}
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}
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// check resourcesYamlFile
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if !BasicFileExistAndNotNull(resourcesYamlFile) {
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return false, []string{
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fmt.Sprintf("[KubectlDeleteExec] - wrong resourcesYamlFile %s not exist !", resourcesYamlFile),
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}
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}
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// apply -f
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ok, resultLog := AllCommandExecutor([]string{
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"/usr/local/bin/kubectl",
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"delete",
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"-f",
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resourcesYamlFile,
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})
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if !ok {
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return false, resultLog
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}
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return true, append(resultLog,
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fmt.Sprintf("[KubectlDeleteExec] - %s delete success!", resourcesYamlFile))
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}
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func K8sCreateNamespace(namespaceName string) bool {
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if k8sClient == nil {
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// this should be the first call of k8s function
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k8sClient = newK8sClientInstance()
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if k8sClient == nil {
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log.ErrorF("k8s client is nil, run k8s function error !")
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return false
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}
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}
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namespace, err := k8sClient.CoreV1().Namespaces().Get(context.TODO(), namespaceName, metav1.GetOptions{})
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if err == nil {
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log.InfoF("[K8sCreateNamespace] - namespace of [%s] already exists!", namespaceName)
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return true
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}
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// create namespace
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// 创建命名空间对象
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namespace = &corev1.Namespace{
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ObjectMeta: metav1.ObjectMeta{
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Name: namespaceName,
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},
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}
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// 使用客户端创建命名空间
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namespace, err = k8sClient.CoreV1().Namespaces().Create(context.TODO(), namespace, metav1.CreateOptions{})
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if err != nil {
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log.ErrorF("Error getting namespace: %s ", err.Error())
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return false
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}
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// check namespace exists
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// 尝试获取名为 "xxg" 的命名空间
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namespace, err = k8sClient.CoreV1().Namespaces().Get(context.TODO(), namespaceName, metav1.GetOptions{})
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// 如果返回错误，需要判断是因为命名空间不存在还是其他错误
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if err != nil {
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if errors.IsNotFound(err) {
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log.ErrorF("Namespace %s cant be got !", namespaceName)
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return false
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} else {
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log.ErrorF("Error retrieving namespace: %s\n", err.Error())
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}
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return false
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}
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log.DebugF("Namespace %s create successful !", namespaceName)
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return true
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}
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func K8sGetDashBoardAuthKey() bool {
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if k8sClient == nil {
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// this should be the first call of k8s function
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k8sClient = newK8sClientInstance()
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if k8sClient == nil {
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log.ErrorF("k8s client is nil, run k8s function error !")
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return false
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}
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}
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// 获取 kube-system 命名空间的 secrets 列表
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secrets, err := k8sClient.CoreV1().Secrets("kube-system").List(context.TODO(), metav1.ListOptions{})
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if err != nil {
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fmt.Printf("Error retrieving secrets from kube-system namespace: %s\n", err.Error())
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os.Exit(1)
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}
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// 过滤出名为 admin-user 的 secret
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var adminUserSecretName string
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for _, secret := range secrets.Items {
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if strings.Contains(secret.Name, "admin-user") {
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adminUserSecretName = secret.Name
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break
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}
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}
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if adminUserSecretName == "" {
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fmt.Println("No admin-user secret found")
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os.Exit(1)
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}
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// 获取并打印特定的 secret 描述信息
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secret, err := k8sClient.CoreV1().Secrets("kube-system").Get(context.TODO(), adminUserSecretName, metav1.GetOptions{})
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if err != nil {
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fmt.Printf("Error retrieving secret %s: %s\n", adminUserSecretName, err.Error())
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os.Exit(1)
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}
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// 打印 secret 的详细信息，根据需要格式化输出
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fmt.Printf("Name: %s\nNamespace: %s\nData:\n", secret.Name, secret.Namespace)
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for key, value := range secret.Data {
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fmt.Printf("%s: %s\n", key, value)
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}
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return false
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}
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