Gitlab部署简介
- 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://blog.damagehead.com/docker-gitlab/
如果已经有可使用的 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
部署 Redis
gitlab-redis.yaml
[root@k8s01 gitlab]# vim gitlab-redis.yaml
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: redis
namespace: kube-ops
labels:
name: redis
spec:
selector:
matchLabels:
name: redis
template:
metadata:
name: redis
labels:
name: redis
spec:
containers:
- name: redis
image: sameersbn/redis:4.0.9-2
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: 30
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
部署Postgresql
gitlab-postgresql.yaml
[root@k8s01 gitlab]# cat gitlab-postgresql.yaml
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: postgresql-data
namespace: kube-ops
spec:
storageClassName: managed-nfs-storage
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 20Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: postgresql
namespace: kube-ops
labels:
name: postgresql
spec:
selector:
matchLabels:
name: postgresql
template:
metadata:
name: postgresql
labels:
name: postgresql
spec:
containers:
- name: postgresql
image: sameersbn/postgresql:10-2
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
- name: USERMAP_UID
value: "999"
- name: USERMAP_GID
value: "999"
ports:
- name: postgres
containerPort: 5432
volumeMounts:
- mountPath: /var/lib/postgresql
name: data
readinessProbe:
exec:
command:
- pg_isready
- -h
- localhost
- -U
- postgres
initialDelaySeconds: 30
timeoutSeconds: 1
volumes:
- name: data
persistentVolumeClaim:
claimName: postgresql-data
---
apiVersion: v1
kind: Service
metadata:
name: postgresql
namespace: kube-ops
labels:
name: postgresql
spec:
ports:
- name: postgres
port: 5432
targetPort: postgres
selector:
name: postgresql
部署Gitlab
gitlab.yaml
[root@k8s01 gitlab]# cat gitlab.yaml
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: gitlab-data
namespace: kube-ops
spec:
storageClassName: managed-nfs-storage
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: gitlab
namespace: kube-ops
labels:
name: gitlab
spec:
replicas: 1
selector:
matchLabels:
name: gitlab
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: "123456"
- name: GITLAB_ROOT_EMAIL
value: op-info.axhome.com.cn
- name: GITLAB_HOST
value: gitlab.k8s.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
persistentVolumeClaim:
claimName: gitlab-data
---
apiVersion: v1
kind: Service
metadata:
name: gitlab
namespace: kube-ops
labels:
name: gitlab
spec:
ports:
- name: http
port: 80
targetPort: http
- name: ssh
port: 22
targetPort: ssh
selector:
name: gitlab
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: gitlab
namespace: kube-ops
annotations:
kubernetes.io/ingress.class: traefik
spec:
rules:
- host: gitlab.k8s.com
http:
paths:
- backend:
serviceName: gitlab
servicePort: 80
要注意的是其中 Redis 和 Postgresql 相关的环境变量配置，另外这里添加了一个 Ingress 对象，来为我们的 Gitlab 配置一个域名gitlab.k8s.com，这样应用部署完成后，我们就可以通过该域名来访问了，然后直接部署即可
[root@k8s01 gitlab]# kubectl apply -f gitlab-redis.yaml gitlab-postgresql.yaml gitlab.yaml
[root@k8s01 gitlab]# kubectl get pods -n kube-ops
NAME READY STATUS RESTARTS AGE
gitlab-7d855554cb-twh7c 1/1 Running 0 10m
postgresql-8566bb959c-2tnvr 1/1 Running 0 17h
redis-8446f57bdf-4v62p 1/1 Running 0 17h
看到都已经部署成功了，然后我们可以通过 Ingress 中定义的域名gitlab.k8s.com(需要做 DNS 解析或者在本地 /etc/hosts 中添加映射)来访问 Portal
使用用户名 root，和部署的时候指定的超级用户密码GITLAB_ROOT_PASSWORD=123456(上述文件中设置)即可登录进入到首页
设置中文
