GROWIをKubernetesにデプロイする

環境

• Kubernetes 1.26

やりたいこと

GROWIの最大の特徴は、マークダウン記法でかけることだ。これにより、シンプルで見やすい文書を簡単に作成できる。

さて、今回の本題は、GROWIをKubernetesにデプロイする方法だ。Kubernetesは、複数のコンテナを管理するオープンソースのシステムであり、スケーラビリティや可用性の高いアプリケーションを構築することができる。

おおよそのひな壇は公式が出しているdocker-compose.yml これをKomposeを使ってk8sの構成ファイルに変換していく。

https://github.com/weseek/growi-docker-compose

Deployment

app-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    io.kompose.service: app
  name: app
spec:
  replicas: 1
  selector:
    matchLabels:
      io.kompose.service: app
  template:
    metadata:
      labels:
        io.kompose.service: app
    spec:
      containers:
      - image: weseek/growi:6.0.15
        name: app
        ports:
        - containerPort: 3000
        resources: {}
        imagePullPolicy: IfNotPresent
        env:
        - name: ELASTICSEARCH_URI
          value: http://elasticsearch:9200/growi
        - name: MONGO_URI
          value: mongodb://mongo:27017/growi
        - name: PASSWORD_SEED
          value: changeme
      volumes:
      - name: growi-data
        persistentVolumeClaim:
          claimName: growi-data

es-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    io.kompose.service: elasticsearch
  name: elasticsearch
spec:
  replicas: 1
  selector:
    matchLabels:
      io.kompose.service: elasticsearch
  template:
    metadata:
      labels:
        io.kompose.service: elasticsearch
    spec:
      containers:
      - image: thr3a/growi-es
        name: elasticsearch
        env:
        - name: ES_JAVA_OPTS
          value: -Xms512m -Xmx512m
        - name: LOG4J_FORMAT_MSG_NO_LOOKUPS
          value: "true"
        - name: bootstrap.memory_lock
          value: "true"
        resources: {}
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - mountPath: /usr/share/elasticsearch/data
          name: es-data
      volumes:
      - name: es-data
        persistentVolumeClaim:
          claimName: es-data

mongo-deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    io.kompose.service: mongo
  name: mongo
spec:
  replicas: 1
  selector:
    matchLabels:
      io.kompose.service: mongo
  template:
    metadata:
      labels:
        io.kompose.service: mongo
    spec:
      containers:
      - image: mongo:4.4
        name: mongo
        resources: {}
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - mountPath: /data
          name: mongo-db
      volumes:
      - name: mongo-db
        persistentVolumeClaim:
          claimName: mongo-db

PVC

データの永続化が必要なのでPVCを作る。今回はstorageClassNameは「nfs-production」とする

app-pvc.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  labels:
    io.kompose.service: growi-data
  name: growi-data
spec:
  storageClassName: nfs-production
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 100G

es-pvc.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  labels:
    io.kompose.service: es-data
  name: es-data
spec:
  storageClassName: nfs-production
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 100G

mongo-pvc.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  labels:
    io.kompose.service: mongo-db
  name: mongo-db
spec:
  storageClassName: nfs-production
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10G

ソースコードまとめ

https://github.com/thr3a/kubernetes-manifests/tree/master/argo/growi