Helm：通过 --set 传递数组值

Question

我有一个 cronjob helm 聊天，我可以在 values.yaml 中定义许多作业，cronjob.yaml 将提供我的作业。我在命令行中设置图像标签 ID 时遇到问题，以下命令不会抛出任何错误，但它不会将作业图像标签更新为新标签。

helm upgrade cronjobs cronjobs/ --wait --set job.myservice.image.tag=b70d744

cronjobs 将运行使用旧图像标签，我该如何解决这个问题？

这是我的cronjobs.yaml

{{- $chart_name := .Chart.Name }}
{{- $chart_version := .Chart.Version | replace "+" "_" }}
{{- $release_name := .Release.Name }}

{{- range $job := .Values.jobs }}
---
apiVersion: batch/v1beta1
kind: CronJob
metadata:
  namespace: "{{ $job.namespace }}"
  name: "{{ $release_name }}-{{ $job.name }}"
  labels:
    chart: "{{ $chart_name }}-{{ $chart_version }}"
spec:
  concurrencyPolicy: {{ $job.concurrencyPolicy }}
  failedJobsHistoryLimit: {{ $job.failedJobsHistoryLimit }}
  suspend: {{ $job.suspend }}
  jobTemplate:
    spec:
      template:
        metadata:
          labels:
            app: {{ $release_name }}
            cron: {{ $job.name }}
        spec:
          containers:
          - image: "{{ $job.image.repository }}:{{ $job.image.tag }}"
            imagePullPolicy: {{ $job.image.imagePullPolicy }}
            ports:
              - name: http
                containerPort: 80
                protocol: TCP
            name: {{ $job.name }}
            args:
{{ toYaml $job.args | indent 12 }}
            env:
{{ toYaml $job.image.env | indent 12 }}
            volumeMounts:
            - name: nfs
              mountPath: "{{ $job.image.nfslogpath }}"
          restartPolicy: OnFailure
          imagePullSecrets:
            - name: {{ $job.image.secret }}
          volumes:
            - name: nfs
              nfs:
                server: "{{ $job.image.server }}"
                path: "{{ $job.image.nfspath }}"
                readOnly: false
  schedule: {{ $job.schedule | quote }}
  successfulJobsHistoryLimit: {{ $job.successfulJobsHistoryLimit }}
  {{- end }}

这是我的 values.yaml

jobs:
  - name: myservice
    namespace: default
    image:
      repository: xxx.com/myservice
      tag: fe4544
      pullPolicy: Always
      secret: xxx
      nfslogpath: "/var/logs/"
      nfsserver: "xxx"
      nfspath: "/nfs/xxx/cronjobs/"
      nfsreadonly: false
      env:
    schedule: "*/5 * * * *"
    args:
    failedJobsHistoryLimit: 1
    successfulJobsHistoryLimit: 3
    concurrencyPolicy: Forbid
    suspend: false

  - name: myservice2
    namespace: default
    image:
      repository: xxxx/myservice2
      tag: 1dff39a
      pullPolicy: IfNotPresent
      secret: xxxx
      nfslogpath: "/var/logs/"
      nfsserver: "xxxx"
      nfspath: "/nfs/xxx/cronjobs/"
      nfsreadonly: false
      env:
    schedule: "*/30 * * * *"
    args:
    failedJobsHistoryLimit: 1
    successfulJobsHistoryLimit: 2
    concurrencyPolicy: Forbid
    suspend: false

Answer 1

由于您在 values.yaml 文件中使用数组，请参阅 related issue

备选方案

您的 values.yaml 缺少 args 和 env[= 的值71=]。我在示例中设置了它们，并将缩进更改为 14

你的cronjob.yamlserver: "{{ $job.image.server }}"值为空，我已经改成了.image.nfsserver

不使用数组，而是像下面的示例那样分隔您的服务：

values.yaml

jobs: myservice: namespace: default image: repository: xxx.com/myservice tag: fe4544 pullPolicy: Always secret: xxx nfslogpath: "/var/logs/" nfsserver: "xxx" nfspath: "/nfs/xxx/cronjobs/" nfsreadonly: false env: key: val schedule: "*/5 * * * *" args: key: val failedJobsHistoryLimit: 1 successfulJobsHistoryLimit: 3 concurrencyPolicy: Forbid suspend: false myservice2: namespace: default image: repository: xxxx/myservice2 tag: 1dff39a pullPolicy: IfNotPresent secret: xxxx nfslogpath: "/var/logs/" nfsserver: "xxxx" nfspath: "/nfs/xxx/cronjobs/" nfsreadonly: false env: key: val schedule: "*/30 * * * *" args: key: val failedJobsHistoryLimit: 1 successfulJobsHistoryLimit: 2 concurrencyPolicy: Forbid suspend: false

在您的 cronjob.yaml 中使用 {{- range $job, $val := .Values.jobs }} 迭代值。

在您使用 {{ $job.name }} 的地方使用 $job。

使用 {{ .suspend }} 而不是 {{ $[=93= 来访问 suspend 这样的值] }}

cronjob.yaml

{{- $chart_name := .Chart.Name }} {{- $chart_version := .Chart.Version | replace "+" "_" }} {{- $release_name := .Release.Name }} {{- range $job, $val := .Values.jobs }} --- apiVersion: batch/v1beta1 kind: CronJob metadata: namespace: {{ .namespace }} name: "{{ $release_name }}-{{ $job }}" labels: chart: "{{ $chart_name }}-{{ $chart_version }}" spec: concurrencyPolicy: {{ .concurrencyPolicy }} failedJobsHistoryLimit: {{ .failedJobsHistoryLimit }} suspend: {{ .suspend }} jobTemplate: spec: template: metadata: labels: app: {{ $release_name }} cron: {{ $job }} spec: containers: - image: "{{ .image.repository }}:{{ .image.tag }}" imagePullPolicy: {{ .image.imagePullPolicy }} ports: - name: http containerPort: 80 protocol: TCP name: {{ $job }} args: {{ toYaml .args | indent 14 }} env: {{ toYaml .image.env | indent 14 }} volumeMounts: - name: nfs mountPath: "{{ .image.nfslogpath }}" restartPolicy: OnFailure imagePullSecrets: - name: {{ .image.secret }} volumes: - name: nfs nfs: server: "{{ .image.nfsserver }}" path: "{{ .image.nfspath }}" readOnly: false schedule: {{ .schedule | quote }} successfulJobsHistoryLimit: {{ .successfulJobsHistoryLimit }} {{- end }}

传值使用--set :

helm upgrade cronjobs cronjobs/ --wait --set jobs.myservice.image.tag=b70d744

示例：

helm install --debug --dry-run --set jobs.myservice.image.tag=my123tag .

... HOOKS: MANIFEST: --- # Source: foo/templates/cronjob.yaml apiVersion: batch/v1beta1 kind: CronJob metadata: namespace: default name: "illmannered-iguana-myservice" labels: chart: "foo-0.1.0" spec: concurrencyPolicy: Forbid failedJobsHistoryLimit: 1 suspend: false jobTemplate: spec: template: metadata: labels: app: illmannered-iguana cron: myservice spec: containers: - image: "xxx.com/myservice:my123tag" imagePullPolicy: ports: - name: http containerPort: 80 protocol: TCP name: myservice args: key: val env: key: val volumeMounts: - name: nfs mountPath: "/var/logs/" restartPolicy: OnFailure imagePullSecrets: - name: xxx volumes: - name: nfs nfs: server: "xxx" path: "/nfs/xxx/cronjobs/" readOnly: false schedule: "*/5 * * * *" successfulJobsHistoryLimit: 3 --- # Source: foo/templates/cronjob.yaml apiVersion: batch/v1beta1 kind: CronJob metadata: namespace: default name: "illmannered-iguana-myservice2" labels: chart: "foo-0.1.0" spec: concurrencyPolicy: Forbid failedJobsHistoryLimit: 1 suspend: false jobTemplate: spec: template: metadata: labels: app: illmannered-iguana cron: myservice2 spec: containers: - image: "xxxx/myservice2:1dff39a" imagePullPolicy: ports: - name: http containerPort: 80 protocol: TCP name: myservice2 args: key: val env: key: val volumeMounts: - name: nfs mountPath: "/var/logs/" restartPolicy: OnFailure imagePullSecrets: - name: xxxx volumes: - name: nfs nfs: server: "xxxx" path: "/nfs/xxx/cronjobs/" readOnly: false schedule: "*/30 * * * *" successfulJobsHistoryLimit: 2

希望对您有所帮助！

Answer 2

如果需要传递数组值，可以使用大括号（unix shell 需要引号）：

--set test={x,y,z}
--set "test={x,y,z}"

结果 YAML：

test:
  - x
  - y
  - z

来源：https://helm.sh/docs/intro/using_helm/#the-format-and-limitations-of---set

已编辑：为 unix shell 添加了 double-quotes，例如 bash

Answer 3

Update for Helm 2.5.0

As of Helm 2.5.0, it is possible to access list items using an array index syntax.

例如，--set servers[0].port=80 变为：

servers:
  - port: 80

Answer 4

在 helm 3 上。这对我有用。 --set "servers[0].port=80" --set "servers[1].port=8080"

Answer 5

为了完整起见，我将 post 一个更复杂的 Helm 3 示例。

假设您的 values.yaml 文件中有：

extraEnvVars:
- name: CONFIG_BACKEND_URL
  value: "https://api.example.com"
- name: CONFIG_BACKEND_AUTH_USER
  value: "admin"
- name: CONFIG_BACKEND_AUTH_PWD
  value: "very-secret-password"

您可以 --set 只为 CONFIG_BACKEND_URL value 这样：

helm install ... --set "extraEnvVars[0].value=http://172.23.0.1:36241"

其他两个变量（即 CONFIG_BACKEND_AUTH_USER 和 CONFIG_BACKEND_AUTH_PWD）将从 values.yaml 文件中读取，因为我们不会用 --set 覆盖它们。 extraEnvVars[0].name 相同，根据 values.yaml.

将是 CONFIG_BACKEND_URL

来源：https://helm.sh/docs/intro/using_helm/#the-format-and-limitations-of---set

Helm：通过 --set 传递数组值

Helm: Passing array values through --set

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