删除后重新创建 K8S 中的 Statefulsets

Question

我正在使用 Elasticsearch 运算符 Kubernetes 并创建了两个有状态集（参见 https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-orchestration.html）：

apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
  name: quickstart
spec:
  version: 7.12.1
  nodeSets:
  - name: master-nodes
    count: 3
    config:
      node.roles: ["master"]
    volumeClaimTemplates:
    - metadata:
        name: elasticsearch-data
      spec:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 1Gi
        storageClassName: standard
  - name: data-nodes
    count: 3
    config:
      node.roles: ["data"]
    volumeClaimTemplates:
    - metadata:
        name: elasticsearch-data
      spec:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 1Gi
        storageClassName: standard

问题是我无法删除状态集。删除后会自动重新创建：

my-PC:~$ kubectl get sts
NAME                         READY   AGE
quickstart-es-data-nodes     0/0     14m
quickstart-es-master-nodes   0/0     18m
my-PC:~$ kubectl delete sts quickstart-es-data-nodes --force --grace-period=0
warning: Immediate deletion does not wait for confirmation that the running resource has been terminated. The resource may continue to run on the cluster indefinitely.
statefulset.apps "quickstart-es-data-nodes" force deleted
my-PC:~$ kubectl get sts
NAME                         READY   AGE
quickstart-es-data-nodes     0/3     3s
quickstart-es-master-nodes   0/0     18m

在删除之前，我已经将 statefulset 缩小为 0，以确保所有 pods 都被终止。但是在删除之后，有状态被重新创建（参见 quickstart-es-data-nodes）。

那么，有人知道如何删除有状态集而不重新创建吗？

Answer 1

您必须删除自定义对象。运营商拥有这些 StatefulSets 并将不断更新它们以匹配其预期内容。

Answer 2

这是因为您为 Elasticsearch 使用的运算符。运营商管理 statefulset，如果您删除它，将会更新。

Behind the scenes, ECK translates each NodeSet specified in the Elasticsearch resource into a StatefulSet in Kubernetes.

如果您阅读文档：https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-orchestration.html#k8s-statefulsets

https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#on-delete

Answer 3

我终于得到答案了...我需要运行以下命令进行删除：

kubectl delete elasticsearch quickstart

这最终删除了快速入门示例。

删除后重新创建 K8S 中的 Statefulsets

Statefulsets in K8S are being recreated after deletion

elasticsearch

kubernetes

kubernetes-statefulset