kubernetes - 使用 helm 设置多个 cronjob

Question

我正在尝试使用相同的 helm chart 部署多个 cronjob。我在下面的 values.yaml 文件中定义了 cronjobs。

cronjob:
  crons:
    "0":
    name: one-minute-cron
    schedule: "*/1 * * * *"
    "1":
    name: five-minute-cron
    schedule: "*/5 * * * *"

  metadata:
    namespace: "{{K8S_NS}}"
    creationTimestamp: null

  restartPolicy: OnFailure

  image:
    repository: "{{CI_REGISTRY_IMAGE}}/{{CI_COMMIT_REF_SLUG}}:{{CI_COMMIT_SHA}}.{{CI_PIPELINE_IID}}"
    pullPolicy: "Always"
    imagePullSecrets: git-image-pull-secret-cron
    restartPolicy: OnFailure

  resources:
    requests:
      cpu: 1.0
      memory: "128Mi"
    limits:
      cpu: 2.0
      memory: "192Mi"

下面是模板文件夹中我的 cronjob.yaml 文件。

{{- range $job, $val := .Values.cronjob.crons }}
apiVersion: batch/v1beta1
kind: CronJob
metadata:
  namespace: {{ $.Values.cronjob.metadata.namespace }}
spec:
  concurrencyPolicy: Allow
  failedJobsHistoryLimit: 1
  jobTemplate:
    metadata:
      creationTimestamp: {{ $.Values.cronjob.metadata.creationTimestamp }}
      name: {{ $.Values.cronjob.crons.name }}
    spec:
      template:
        metadata:
          creationTimestamp: {{ $.Values.cronjob.metadata.creationTimestamp }}
        spec:
          containers:
          - image: {{ $.Values.cronjob.image.repository }}
            imagePullPolicy: {{ $.Values.cronjob.image.pullPolicy }}
            name: {{ $.Values.cronjob.crons.name }}
            resources:
              requests:
                memory: {{ $.Values.cronjob.resources.requests.memory }}
                cpu: {{ $.Values.cronjob.resources.requests.cpu }}
              limits:
                memory: {{ $.Values.cronjob.resources.limits.memory }}
                cpu: {{ $.Values.cronjob.resources.limits.cpu }}

          dnsPolicy: ClusterFirst
          restartPolicy: {{ $.Values.cronjob.image.restartPolicy }}
          schedulerName: default-scheduler
          securityContext: {}
          terminationGracePeriodSeconds: 30
          imagePullSecrets:
            - name: {{ $.Values.cronjob.image.imagePullSecrets }}
  schedule: {{ quote $.Values.cronjob.crons.schedule }}
  successfulJobsHistoryLimit: 3
  suspend: false
status: {}
---
{{- end }}

当我在 CICD 管道中运行它以在 gitlab 中部署时，它会抛出以下错误。

Error: UPGRADE FAILED: error validating "": error validating data: [ValidationError(CronJob.spec.jobTemplate.spec.template.spec.containers[0]): missing required field "name" in io.k8s.api.core.v1.Container, ValidationError(CronJob.spec): missing required field "schedule" in io.k8s.api.batch.v1beta1.CronJobSpec]

注意:我已经从 gitlab 复制了整个存储库，除了 gitlab secret 、模板等敏感信息。为此，我也检查了其他博客，但它们都没有帮助让这些 crons 工作。 Github repo 链接是 here

Answer 1

首先，我认为 cronjob.crons 应该是一个数组。尝试将其更改为:

cronjob:
  crons:
    - id: "0"
      name: "one-minute-cron"
      schedule: "*/1 * * * *"
    - id: "1"
      name: five-minute-cron
      schedule: "*/5 * * * *"

然后你可以通过以下方式迭代“crons”:

{{- range $cron := .Values.cronjob.crons }}

然后您可以像这样访问“cron”字段:

...
imagePullPolicy: {{ $.Values.cronjob.image.pullPolicy }}
name: {{ $cron.name }}