英文:
How can I add a env variable to a kubernetes deployment using golang?
问题
我需要使用Golang设置或添加一个环境变量到一个已存在的Kubernetes部署中。在重新启动后，它应该被添加到配置中。
func (r *SparkETLReconciler) DoRestart(w http.ResponseWriter, req *http.Request) {
ctx := context.TODO()
r.Log.Info("restart hit!")
fmt.Fprintf(w, "Hi there, I love %s!", req.URL.Path[1:])
found := &appsv1.Deployment{}
err := r.Get(ctx, types.NamespacedName{
Name: "vmc-etl-test",
Namespace: "ndl",
}, found)
if err != nil {
r.Log.Error(err, "deploy check failed")
} else {
fmt.Fprintf(w, "I found the deployment!")
}
deleteErr := r.DeleteAllOf(ctx, &corev1.Pod{}, client.InNamespace("ndl"), client.MatchingLabels{"operatorETLName": req.URL.Path[1:]})
if deleteErr != nil {
r.Log.Error(deleteErr, "deletion of deployment's pods failed")
} else {
fmt.Fprintf(w, "Deployment's pods deleted, restarting")
}
}
请注意，这只是一个代码片段，你需要根据你的实际需求进行适当的修改和集成。
英文:
I need to set or add a environment variable to a existing kubernetes deployment using golang. It should be added to the config after a restart.
func (r *SparkETLReconciler) DoRestart(w http.ResponseWriter, req *http.Request) {
ctx := context.TODO()
r.Log.Info("restart hit!")
fmt.Fprintf(w, "Hi there, I love %s!", req.URL.Path[1:])
found := &appsv1.Deployment{}
err := r.Get(ctx, types.NamespacedName{
Name: "vmc-etl-test",
Namespace: "ndl",
}, found)
if err != nil {
r.Log.Error(err, "deploy check failed")
} else {
fmt.Fprintf(w, "I found the deployment!")
}
deleteErr := r.DeleteAllOf(ctx, &corev1.Pod{}, client.InNamespace("ndl"), client.MatchingLabels{"operatorETLName": req.URL.Path[1:])
if deleteErr != nil {
r.Log.Error(deleteErr, "deletion of deployment's pods failed")
} else {
fmt.Fprintf(w, "Deployment's pods deleted, restarting")
}
}
答案1
得分: 0
在获取到你的部署之后，你可以按照以下方式添加环境变量。
# 假设你的 Pod 中只有一个容器
found.Spec.Template.Spec.Containers[0].Env = []v1.EnvVar{
{
Name: "ENV_VARIABLE_NAME",
Value: "ENV_VARIABLE_VALUE",
},
}
当然，如果你的容器中已经有一些环境变量，最好使用 append() 方法将它们添加进去，否则会覆盖原有的环境变量。
此外，你需要调用 Update()（或 CreateOrUpdate()）来更新你的部署。
英文:
After you fetched the your deployment, you can add env variable in the following manner.
# Assuming you have only 1 container in the Pod
found.Spec.Template.Spec.Containers[0].Env = []v1.EnvVar{
{
Name: "ENV_VARIABLE_NAME",
Value: "ENV_VARIABLE_VALUE",
},
}
Needless to say, if you already have some env variables in your container, then you'd better append() them, otherwise you'll override them.
Also, you'll need to send a call to Update() (or CreateOrUpdate()) your deployment.
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