k8s笔记7.4--helm构建无端口类型chart-CFANZ编程社区

k8s笔记7.4--helm构建无端口类型chart

介绍
无端口chart
注意事项
说明

介绍

helm create chartName 后，默认创建了一个web类型的应用，而且配置了service 和端口探测；如果直接更换为无端口的worker 类型应用，那么部署就报错了。因此需要调整helm chart文件，是指无端口和service 配置，然后再打包部署。
本文以busybox 为例，打包一个无端口的helm chart，并部署到 k8s 中。

无端口chart

创建chart

helm create xg-busybox

清理无用的配置项

values.yaml 中设置ingress 为false
eployment.yaml 中去掉端口相关的配置 containers.ports
去掉配置文件 service.yaml

values.yaml
replicaCount: 1

image:
  repository: registry-vpc.cn-shanghai.aliyuncs.com/yourNamespace/busybox
  pullPolicy: IfNotPresent
  # Overrides the image tag whose default is the chart appVersion.
  tag: busybox_1.31

imagePullSecrets: [{"name": "regcred"}]
nameOverride: ""
fullnameOverride: ""

serviceAccount:
  create: true
  annotations: {}
  name: ""

podAnnotations: {}

podSecurityContext: {}
  # fsGroup: 2000

securityContext: {}

service:
  type: ClusterIP
  port: 80

ingress:
  enabled: false
  className: ""
  annotations: {}
  hosts:
    - host: chart-example.local
      paths:
        - path: /
          pathType: ImplementationSpecific
  tls: []

resources: {}

autoscaling:
  enabled: false
  minReplicas: 1
  maxReplicas: 100
  targetCPUUtilizationPercentage: 80

nodeSelector: {}

tolerations: []

affinity: {}

vim templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ include "xg-busybox.fullname" . }}
  labels:
    {{- include "xg-busybox.labels" . | nindent 4 }}
spec:
  {{- if not .Values.autoscaling.enabled }}
  replicas: {{ .Values.replicaCount }}
  {{- end }}
  selector:
    matchLabels:
      {{- include "xg-busybox.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      {{- with .Values.podAnnotations }}
      annotations:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      labels:
        {{- include "xg-busybox.selectorLabels" . | nindent 8 }}
    spec:
      {{- with .Values.imagePullSecrets }}
      imagePullSecrets:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      serviceAccountName: {{ include "xg-busybox.serviceAccountName" . }}
      securityContext:
        {{- toYaml .Values.podSecurityContext | nindent 8 }}
      containers:
        - name: {{ .Chart.Name }}
          securityContext:
            {{- toYaml .Values.securityContext | nindent 12 }}
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
          command: [sh, -c, 'sleep infinity']
          imagePullPolicy: {{ .Values.image.pullPolicy }}
          resources:
            {{- toYaml .Values.resources | nindent 12 }}
      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.affinity }}
      affinity:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.tolerations }}
      tolerations:
        {{- toYaml . | nindent 8 }}
      {{- end }}

打包部署

# helm push xg-busybox/ bigdata-apps
# helm repo update
# helm upgrade xg-busybox-dev bigdata-apps/xg-busybox -f xg-busybox/dev-values.yaml --set=image.tag=busybox_1.31 -n sre-test
# helm list -A|grep xg-busybox
xg-busybox-dev  sre-test  2        2021-08-21 17:09:41.318788496 +0800 CST  deployed  xg-busybox-0.1.4    1.31