k8s部署gitlab最新版并初始化和登录

前提条件是已经部署了k8s环境，采用k8s部署gitlab作为devops的测试环境，更加简洁和方便。

在nfs服务器创建共享目录，部署的gitlib使用共享目录来进行持久化，这样不管在哪个节点运行gitlib都没有关系。

# mkdir -p /home/k8s-nfs/gitlab/config
# mkdir -p /home/k8s-nfs/gitlab/logs
# mkdir -p /home/k8s-nfs/gitlab/data

/home/k8s-nfs/gitlab/config 192.168.17.0/8(rw,no_root_squash)
/home/k8s-nfs/gitlab/logs 192.168.17.0/8(rw,no_root_squash)
/home/k8s-nfs/gitlab/data 192.168.17.0/8(rw,no_root_squash)

# service nfs restart
或者
# exportfs -r

apiVersion: v1
kind: Service
metadata:
  name: gitlab
spec:
  type: NodePort
  ports:
  # Port上的映射端口
  - port: 443
    targetPort: 443
    name: gitlab443
  - port: 80
    targetPort: 80
    name: gitlab80
  - port: 22
    targetPort: 22
    name: gitlab22
  selector:
    app: gitlab

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: gitlab
spec:
  selector:
    matchLabels:
      app: gitlab
  revisionHistoryLimit: 2
  template:
    metadata:
      labels:
        app: gitlab
    spec:
      containers:
      # 应用的镜像
      - image: gitlab/gitlab-ce 
        name: gitlab
        imagePullPolicy: IfNotPresent
        # 应用的内部端口
        ports:
        - containerPort: 443
          name: gitlab443
        - containerPort: 80
          name: gitlab80
        - containerPort: 22
          name: gitlab22
        volumeMounts:
        # gitlab持久化
        - name: gitlab-persistent-config
          mountPath: /etc/gitlab
        - name: gitlab-persistent-logs
          mountPath: /var/log/gitlab
        - name: gitlab-persistent-data
          mountPath: /var/opt/gitlab
      imagePullSecrets:
      - name: devops-repo
      volumes:
      # 使用nfs互联网存储
      - name: gitlab-persistent-config
        nfs:
          server: 192.168.17.81
          path: /home/k8s-nfs/gitlab/config
      - name: gitlab-persistent-logs
        nfs:
          server: 192.168.17.81
          path: /home/k8s-nfs/gitlab/logs
      - name: gitlab-persistent-data
        nfs:
          server: 192.168.17.81
          path: /home/k8s-nfs/gitlab/data

# kubectl apply -f gitlib-deploy.yaml

# kubectl get deploy 
NAME     READY   UP-TO-DATE   AVAILABLE   AGE
gitlab   1/1     1            1           134m

以上说明部署完成。

通过查看service映射的端口：

# kubectl get svc -o wide
NAME         TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                   AGE    SELECTOR
gitlab       NodePort    10.10.129.28            443:31326/TCP,80:31320/TCP,22:31515/TCP   137m   app=gitlab

可以看到映射80端口的节点端口为：31320

通过制定端口访问登录页：

 初始用户名为root，初始密码gitlib自动创建，在如下文件中：

/etc/gitlab/initial_root_password

由于是容器部署，所以，需要进入到容器中，找到对应文件，拷贝密码进行登录。文件内容类似：

# WARNING: This value is valid only in the following conditions
#          1. If provided manually (either via `GITLAB_ROOT_PASSWORD` environment variable or via `gitlab_rails['initial_root_passwo
#          2. Password hasn't been changed manually, either via UI or via command line.
#
#          If the password shown here doesn't work, you must reset the admin password following https://docs.gitlab.com/ee/security/

Password: HCsr5VFAp28N*****************=

# NOTE: This file will be automatically deleted in the first reconfigure run after 24 hours.