背景

机房搬迁，趁此时机，将 Nexus3也容器化管理

docker 容器化测试

1.复制之前数据到另一个目录进行 docker测试

cp -a  /some/dir/nexus-data/db/ /opt/nexus-data/
cp -a  /some/dir/nexus-data/blobs/ /opt/nexus-data/

docker rm -f nexus-test 
docker run -d -p 8085:8081 --name nexus-test -v /opt/nexus-data/db:/nexus-data/db -v /opt/nexus-data/blobs:/nexus-data/blobs sonatype/nexus3:3.14.0
#docker restart nexus-test  
docker logs -f nexus-test 
# 注 这里覆盖了/nexus-data/db 所以也不会有密码文件产生，服务将会沿用之前密码
#     容器版本最好也和之前服务的版本一致，不然可能会出现迁移数据不生效问题

2. 访问 http://172.18.154.185:8085/#browse/search/maven 测试文件已都存在 ok 准备迁移k8s
   

k8s yaml文件

cat nex.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    k8s-app: nexus3
  name: nexus3
  namespace: log-others
spec:
  replicas: 1
  selector:
    matchLabels:
      k8s-app: nexus3
  template:
    metadata:
      labels:
        k8s-app: nexus3
      name: nexus3
      namespace: log-others
    spec:
      containers:
      - name: nexus3
        image: sonatype/nexus3:3.14.0
        imagePullPolicy: IfNotPresent
        ports:
          - containerPort: 8081
            name: web
            protocol: TCP
        #livenessProbe:
        #  httpGet:
        #    path: /
        #    port: 8081
        #  initialDelaySeconds: 60
        #  periodSeconds: 30
        #  failureThreshold: 6
        #readinessProbe:
        #  httpGet:
        #    path: /
        #    port: 8081
        #  initialDelaySeconds: 60
        #  periodSeconds: 30
        #  failureThreshold: 6
        resources:
          limits:
            cpu: 2000m
            memory: 4Gi
          requests:
            cpu: 500m
            memory: 512Mi
        volumeMounts:
        - name: nexus-data
          mountPath: /nexus-data
      volumes:
        - name: nexus-data
          persistentVolumeClaim:
            claimName: nexus-data-pvc
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nexus-data-pvc
  namespace: log-others
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: "csi-rbd-sc"
  resources:
    requests:
      storage: 30Gi

---
apiVersion: v1
kind: Service
metadata:
  name: nexus3
  namespace: log-others
  labels:
    k8s-app: nexus3
spec:
  selector:
    k8s-app: nexus3
  type: ClusterIP
  ports:
    - name: web
      protocol: TCP
      port: 8081
      targetPort: 8081
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: nexus3
  namespace: log-others
  labels:
    k8s-app: nexus3
spec:
  rules:
    - host: "xxx.com"
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              service:
                name: nexus3
                port:
                  number: 8081

我们这里直接访问域名进行验证 xxx.com ， 测试没问题再手动迁移一下数据（这里比较着急，优雅可以写个初始化镜像）

 kubectl -n log-others   exec -it nexus3-7c7f5bcbb5-hw67s  -- sh 
#这里吧之前的文件已经压缩上传到了公司的下载服务器上 进行下载、解压目录
curl -o wj.tgz http://xxx/wj.tgz
tar xvf wj.tgz
...
#完事之后重启pod 
kubectl -n log-others   delete nexus3-7c7f5bcbb5-hw67s

参考文档

在k8s集群部署Nexus：https://www.cnblogs.com/ssgeek/p/12270079.html