K3s集群中Nexus重启后用户与数据不持久化问题解决

问题场景 #

在树莓派K3s集群部署Nexus时，已配置StatefulSet、StorageClass、PVC及Service，但Pod重启后所有用户配置与数据都会丢失，必须重新创建配置和用户。

修复方案 #

通过以下两项调整彻底解决了持久化问题：

• 在StatefulSet的Pod模板中添加securityContext字段，指定运行用户、组以及文件系统组，确保Nexus进程拥有挂载存储的读写权限
• 调整存储卷的挂载路径，与Nexus容器内部的数据存储目录完全匹配

完整可运行配置 #

# Nexus StatefulSet 配置
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: nexus
spec:
  serviceName: nexus-service
  replicas: 1
  selector:
    matchLabels:
      app: nexus
  template:
    metadata:
      labels:
        app: nexus
    spec:
      securityContext:
        runAsUser: 200
        runAsGroup: 200
        fsGroup: 200
      containers:
      - name: nexus
        image: sonatype/nexus3:latest
        ports:
        - containerPort: 8081
        volumeMounts:
        - name: nexus-data
          mountPath: /nexus-data
  volumeClaimTemplates:
  - metadata:
      name: nexus-data
    spec:
      accessModes: ["ReadWriteOnce"]
      storageClassName: "local-path" # 适配树莓派K3s默认StorageClass
      resources:
        requests:
          storage: 10Gi

# Nexus Service 配置
apiVersion: v1
kind: Service
metadata:
  name: nexus-service
spec:
  type: NodePort
  ports:
  - port: 8081
    targetPort: 8081
    nodePort: 30081
  selector:
    app: nexus

内容的提问来源于stack exchange，提问作者deroccha