Gitlab官方提供了 Helm 的方式在 Kubernetes 集群中来快速安装，但是在使用的过程中发现 Helm 提供的 Chart 包中有很多其他额外的配置，所以我们这里使用自定义的方式来安装，也就是自己来定义一些资源清单文件。
Gitlab主要涉及到3个应用：Redis、Postgresql、Gitlab 核心程序，实际上我们只要将这3个应用分别启动起来，然后加上对应的配置就可以很方便的安装 Gitlab 了，我们这里选择使用的镜像不是官方的，而是 Gitlab 容器化中使用非常多的一个第三方镜像：sameersbn/gitlab，基本上和官方保持同步更新，地址：http://www.damagehead.com/docker-gitlab/
如果我们已经有可使用的 Redis 或 Postgresql 服务的话，那么直接配置在 Gitlab 环境变量中即可，如果没有的话就单独部署。
首先部署需要的 Redis 服务，对应的资源清单文件如下：(gitlab-redis.yaml)
apiVersion: apps/v1beta1
kind: Deployment
metadata: name: redis namespace: kube-ops labels: name: redis spec: template: metadata: name: redis labels: name: redis spec: containers: - name: redis image: sameersbn/redis imagePullPolicy: IfNotPresent ports: - name: redis containerPort: 6379 volumeMounts: - mountPath: /var/lib/redis name: data livenessProbe: exec: command: - redis-cli - ping initialDelaySeconds: 30 timeoutSeconds: 5 readinessProbe: exec: command: - redis-cli - ping initialDelaySeconds: 5 timeoutSeconds: 1 volumes: - name: data emptyDir: {} --- apiVersion: v1 kind: Service metadata: name: redis namespace: kube-ops labels: name: redis spec: ports: - name: redis port: 6379 targetPort: redis selector: name: redis 然后是数据库 Postgresql，对应的资源清单文件如下：(gitlab-postgresql.yaml)
apiVersion: apps/v1beta1
kind: Deployment
metadata: name: postgresql namespace: kube-ops labels: name: postgresql spec: template: metadata: name: postgresql labels: name: postgresql spec: containers: - name: postgresql image: sameersbn/postgresql:10 imagePullPolicy: IfNotPresent env: - name: DB_USER value: gitlab - name: DB_PASS value: passw0rd - name: DB_NAME value: gitlab_production - name: DB_EXTENSION value: pg_trgm ports: - name: postgres containerPort: 5432 volumeMounts: - mountPath: /var/lib/postgresql name: data livenessProbe: exec: command: - pg_isready - -h - localhost - -U - postgres initialDelaySeconds: 30 timeoutSeconds: 5 readinessProbe: exec: command: - pg_isready - -h - localhost - -U - postgres initialDelaySeconds: 5 timeoutSeconds: 1 volumes: - name: data emptyDir: {} --- apiVersion: v1 kind: Service metadata: name: postgresql namespace: kube-ops labels: name: postgresql spec: ports: - name: postgres port: 5432 targetPort: postgres selector: name: postgresql 然后就是我们最核心的 Gitlab 的应用，对应的资源清单文件如下：(gitlab.yaml)
apiVersion: apps/v1beta1
kind: Deployment
metadata: name: gitlab namespace: kube-ops labels: name: gitlab spec: template: metadata: name: gitlab labels: name: gitlab spec: containers: - name: gitlab image: sameersbn/gitlab:11.8.1 imagePullPolicy: IfNotPresent env: - name: TZ value: Asia/Shanghai - name: GITLAB_TIMEZONE value: Beijing - name: GITLAB_SECRETS_DB_KEY_BASE value: long-and-random-alpha-numeric-string - name: GITLAB_SECRETS_SECRET_KEY_BASE value: long-and-random-alpha-numeric-string - name: GITLAB_SECRETS_OTP_KEY_BASE value: long-and-random-alpha-numeric-string - name: GITLAB_ROOT_PASSWORD value: admin321 - name: GITLAB_ROOT_EMAIL value: [email protected] - name: GITLAB_HOST value: git.qikqiak.com - name: GITLAB_PORT value: "80" - name: GITLAB_SSH_PORT value: "22" - name: GITLAB_NOTIFY_ON_BROKEN_BUILDS value: "true" - name: GITLAB_NOTIFY_PUSHER value: "false" - name: GITLAB_BACKUP_SCHEDULE value: daily - name: GITLAB_BACKUP_TIME value: 01:00 - name: DB_TYPE value: postgres - name: DB_HOST value: postgresql - name: DB_PORT value: "5432" - name: DB_USER value: gitlab - name: DB_PASS value: passw0rd - name: DB_NAME value: gitlab_production - name: REDIS_HOST value: redis - name: REDIS_PORT value: "6379" ports: - name: http containerPort: 80 - name: ssh containerPort: 22 volumeMounts: - mountPath: /home/git/data name: data livenessProbe: httpGet: path: / port: 80 initialDelaySeconds: 180 timeoutSeconds: 5 readinessProbe: httpGet: path: / port: 80 initialDelaySeconds: 5 timeoutSeconds: 1 volumes: - name: data emptyDir: {} --- apiVersion: v1 kind: Service metadata: name: gitlab namespace: kube-ops labels