我正在尝试将非拥有对象的规范修改为“自定义资源”的Reconcile
的一部分,但似乎它会忽略不是原语的任何字段。我正在使用 Controller 运行时。
我认为,因为它仅适用于原语,也许这是与DeepCopy有关的问题。但是,删除它并不能解决问题,而且我读到,对象的所有更新都必须在深拷贝上,以避免弄乱缓存。
我还尝试设置client.FieldOwner(...)
,因为它说这是服务器端完成更新所必需的。我不确定将其设置为什么,所以我将其设置为req.NamespacedName.String()
。那也不起作用。
这是我的 Controller 的协调循环:
func (r *MyCustomObjectReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
// ...
var myCustomObject customv1.MyCustomObject
if err := r.Get(ctx, req.NamespacedName, &myCustomObject); err != nil {
log.Error(err, "unable to fetch ReleaseDefinition")
return ctrl.Result{}, client.IgnoreNotFound(err)
}
// ...
deployList := &kappsv1.DeploymentList{}
labels := map[string]string{
"mylabel": myCustomObject.Name,
}
if err := r.List(ctx, deployList, client.MatchingLabels(labels)); err != nil {
log.Error(err, "unable to fetch Deployments")
return ctrl.Result{}, err
}
// make a deep copy to avoid messing up the cache (used by other controllers)
myCustomObjectSpec := myCustomObject.Spec.DeepCopy()
// the two fields of my CRD that affect the Deployments
port := myCustomObjectSpec.Port // type: *int32
customenv := myCustomObjectSpec.CustomEnv // type: map[string]string
for _, dep := range deployList.Items {
newDeploy := dep.DeepCopy() // already returns a pointer
// Do these things:
// 1. replace first container's containerPort with myCustomObjectSpec.Port
// 2. replace first container's Env with values from myCustomObjectSpec.CustomEnv
// 3. Update the Deployment
container := newDeploy.Spec.Template.Spec.Containers[0]
// 1. Replace container's port
container.Ports[0].ContainerPort = *port
envVars := make([]kcorev1.EnvVar, 0, len(customenv))
for key, val := range customenv {
envVars = append(envVars, kcorev1.EnvVar{
Name: key,
Value: val,
})
}
// 2. Replace container's Env variables
container.Env = envVars
// 3. Perform update for deployment (port works, env gets ignored)
if err := r.Update(ctx, newDeploy); err != nil {
log.Error(err, "unable to update deployment", "deployment", dep.Name)
return ctrl.Result{}, err
}
}
return ctrl.Result{}, nil
}
我的CRD的规格如下:
// MyCustomObjectSpec defines the desired state of MyCustomObject
type MyCustomObjectSpec struct {
// CustomEnv is a list of environment variables to set in the containers.
// +optional
CustomEnv map[string]string `json:"customEnv,omitempty"`
// Port is the port that the backend container is listening on.
// +optional
Port *int32 `json:"port,omitempty"`
}
我期望当我对Port和CustomEnv字段进行更改后对新CR进行
kubectl apply
编码时,它将按照Reconcile
中的描述修改部署。但是,仅端口被更新,并且对容器的Env
的更改将被忽略。 最佳答案
问题是我需要一个指向正在修改的容器的指针。
而是这样做:
container := &newDeploy.Spec.Template.Spec.Containers[0]
关于kubernetes - 为什么client.Update(...)会忽略非原始值?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/57697912/