基于k8s的ES集群定期删除索引

apiVersion: batch/v1beta1
kind: CronJob
metadata:
 name: elasticsearch
 namespace: elasticsearch
 labels:
   app.kubernetes.io/name: elasticsearch
spec:
  successfulJobsHistoryLimit: 10
  failedJobsHistoryLimit: 10
  concurrencyPolicy: Forbid #禁止并发运行
  schedule: "* * * * *"
  jobTemplate: #运行一个job
    spec:
      template:
        metadata:
          name: del-es-index-cronjob
        spec:
          restartPolicy: OnFailure
          containers:
          - name: curl-es
            image: harbor.xxxx.com/base_image/alpine-date-curl
            command:
            - "/bin/sh"
            - "-c"
            - >
              curl -X DELETE http://elasticsearch:9200/*`date +%Y.%m.%d -d "-7 days"`?pretty

查看cronjob

$ kubectl get cronjob -n elasticsearch
NAME            SCHEDULE    SUSPEND   ACTIVE   LAST SCHEDULE   AGE
elasticsearch   * * * * *   False     0        <none>          11s

　　

查看运行的jobs

$ kubectl get jobs -n elasticsearch
NAME                       DESIRED   SUCCESSFUL   AGE
elasticsearch-1552553820   1         1            2m
elasticsearch-1552553880   1         1            1m
elasticsearch-1552553940   1         1            46s

　　

查看jobs执行的情况

$ pods=$(kubectl get pods --selector=job-name=elasticsearch-1552553820  --output=jsonpath={.items..metadata.name} -n elasticsearch)

$ echo $pods
elasticsearch-1552553820-6cb4r

$ kubectl logs elasticsearch-1552553820-6cb4r -n elasticsearch
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
{
  "acknowledged" : true
}
100    28  100    28    0     0     10      0  0:00:02  0:00:02 --:--:--    10