我是 helm 和 kubernetes 的新手。
我当前的要求是使用通用舵图设置多个服务。
这是场景。
-
我有一个适用于所有服务的通用 docker 映像
-
对于每个服务,都需要运行不同的命令。总共有40多项服务。
Example
pipenv run python serviceA.py
pipenv run python serviceB.py
pipenv run python serviceC.py
and so on...
我的舵图当前状态是
demo-helm
|- Chart.yaml
|- templates
|- deployment.yaml
|- _helpers.tpl
|- values
|- values-serviceA.yaml
|- values-serviceB.yaml
|- values-serviceC.yaml
and so on ...
现在,因为我想使用相同的 Helm Chart 并部署多个服务。我该怎么做呢?
我使用了以下命令helm install demo-helm . -f values/values-serviceA.yaml -f values-serviceB.yaml
但它只对最后提供的值文件进行部署。
这是我的deployment.yaml
file
apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ include "helm.fullname" . }}
labels:
{{- include "helm.labels" . | nindent 4 }}
spec:
replicas: {{ .Values.replicaCount }}
selector:
matchLabels:
{{- include "helm.selectorLabels" . | nindent 6 }}
template:
metadata:
{{- with .Values.podAnnotations }}
annotations:
{{- toYaml . | nindent 8 }}
{{- end }}
labels:
{{- include "helm.selectorLabels" . | nindent 8 }}
spec:
{{- with .Values.imagePullSecrets }}
imagePullSecrets:
{{- toYaml . | nindent 8 }}
{{- end }}
containers:
- name: {{ .Chart.Name }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
command: {{- toYaml .Values.command |nindent 12}}
resources:
{{- toYaml .Values.resources | nindent 12 }}
volumeMounts:
- name: secrets
mountPath: "/usr/src/app/config.ini"
subPath: config.ini
{{- with .Values.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.affinity }}
affinity:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.tolerations }}
tolerations:
{{- toYaml . | nindent 8 }}
{{- end }}
volumes:
- name: secrets
secret:
secretName: sample-application
defaultMode: 0400
Update.
由于我的要求已更新为在单个文件中添加服务的所有值,我可以通过以下方式完成此操作。
deployment.yaml
{{- range $service, $val := .Values.services }}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ $service }}
labels:
app: {{ .nameOverride }}
spec:
replicas: {{ .replicaCount }}
selector:
matchLabels:
app: {{ .nameOverride }}
template:
metadata:
labels:
app: {{ .nameOverride }}
spec:
imagePullSecrets:
- name: aws-ecr
containers:
- name: {{ $service }}
image: "image-latest-v3"
imagePullPolicy: IfNotPresent
command: {{- toYaml .command |nindent 12}}
resources:
{{- toYaml .resources | nindent 12 }}
volumeMounts:
- name: secrets
mountPath: "/usr/src/app/config.ini"
subPath: config.ini
volumes:
- name: secrets
secret:
secretName: {{ .secrets }}
defaultMode: 0400
{{- end }}
and values.yaml
services:
#Services for region1
serviceA-region1:
nameOverride: "serviceA-region1"
fullnameOverride: "serviceA-region1"
command: ["bash", "-c", "python serviceAregion1.py"]
secrets: vader-search-region2
resources: {}
replicaCount: 5
#Services for region2
serviceA-region2:
nameOverride: "serviceA-region2"
fullnameOverride: "serviceA-region2"
command: ["bash", "-c", "python serviceAregion2.py"]
secrets: vader-search-region2
resources: {}
replicaCount: 5
现在我想知道以下配置是否适用于我在下面发布的更改values.yaml
services:
region:
#Services for region1
serviceA-region1:
nameOverride: "serviceA-region1"
fullnameOverride: "serviceA-region1"
command: ["bash", "-c", "python serviceAregion1.py"]
secrets: vader-search-region2
resources: {}
replicaCount: 5
region:2
#Services for region2
serviceA-region2:
nameOverride: "serviceA-region2"
fullnameOverride: "serviceA-region2"
command: ["bash", "-c", "python serviceAregion2.py"]
secrets: vader-search-region2
resources: {}
replicaCount: 5
and deployment.yaml
{{- range $region, $val := .Values.services.region }}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ $region }}-{{ .nameOverride }}
labels:
app: {{ .nameOverride }}
spec:
replicas: {{ .replicaCount }}
selector:
matchLabels:
app: {{ .nameOverride }}
template:
metadata:
labels:
app: {{ .nameOverride }}
spec:
imagePullSecrets:
- name: aws-ecr
containers:
- name: {{ $region }}-{{ .nameOverride }}
image: "image-latest-v3"
imagePullPolicy: IfNotPresent
command: {{- toYaml .command |nindent 12}}
resources:
{{- toYaml .resources | nindent 12 }}
volumeMounts:
- name: secrets
mountPath: "/usr/src/app/config.ini"
subPath: config.ini
volumes:
- name: secrets
secret:
secretName: {{ .secrets }}
defaultMode: 0400
{{- end }}