描述背景:
早前公司代码管理采用的docker compose搭建的gitlab管理。为完成资源优化,高可用。现在将环境迁移到kubernetes集群环境中。compose 文件基本是基于https://raw.githubusercontent.com/sameersbn/docker-gitlab/master/docker-compose.yml进行修改的,修改了gitlab images twang2218/gitlab-ce-zh:latest 中文版镜像.gitlab postgresql redis都挂载本地目录为/data/docker/相对应目录下 端口映射80映射到主机10080 22 映射到10022主机端口。
如下图:
gitlab 主要涉及Redis、Postgresql、Gitlab三个应用,现在基于kubernetes 先搭建gitlab初始化环境:
环境搭建:
1 . gitlab redis 应用搭建
cat <<EOF > gitlab-redis.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: gitlab-redis
namespace: kube-ops
labels:
name: redis
spec:
storageClassName: rook-ceph-block
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
---
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
imagePullPolicy: IfNotPresent
ports:
- name: redis
containerPort: 6379
volumeMounts:
- mountPath: /var/lib/redis
name: gitlab-redis
livenessProbe:
exec:
command:
- redis-cli
- ping
initialDelaySeconds: 30
timeoutSeconds: 5
readinessProbe:
exec:
command:
- redis-cli
- ping
initialDelaySeconds: 5
timeoutSeconds: 1
volumes:
- name: gitlab-redis
persistentVolumeClaim:
claimName: gitlab-redis
---
apiVersion: v1
kind: Service
metadata:
name: redis
namespace: kube-ops
labels:
name: redis
spec:
ports:
- name: redis
port: 6379
targetPort: redis
selector:
name: redis
EOF
2 . gitlab portgresql 环境搭建
cat <<EOF >gitlab-postgresql.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: gitlab-postgresql
namespace: kube-ops
labels:
name: postgresql
spec:
storageClassName: rook-ceph-block
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: postgresql
namespace: kube-ops
labels:
name: postgresql
spec:
spec:
selector:
matchLabels:
name: postgresql
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: gitlab-postgresql
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: gitlab-postgresql
persistentVolumeClaim:
claimName: gitlab-postgresql
---
apiVersion: v1
kind: Service
metadata:
name: postgresql
namespace: kube-ops
labels:
name: postgresql
spec:
ports:
- name: postgres
port: 5432
targetPort: postgres
selector:
name: postgresql
EOF
3 . gitlab 应用搭建
cat <<EOF >gitlab.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: gitlab
labels:
app: gitlab
namespace: kube-ops
spec:
storageClassName: rook-ceph-block
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 20Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: gitlab
namespace: kube-ops
labels:
name: gitlab
spec:
spec:
selector:
matchLabels:
name: gitlab
template:
metadata:
name: gitlab
labels:
name: gitlab
spec:
containers:
- name: gitlab
image: twang2218/gitlab-ce-zh:10.8.3
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: zhangpeng19871017@hotmail.com
- name: GITLAB_HOST
value: gitlab.zhangpeng.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: /var/opt/gitlab
name: gitlab
livenessProbe:
httpGet:
path: /
port: 80
initialDelaySeconds: 180
timeoutSeconds: 5
readinessProbe:
httpGet:
path: /
port: 80
initialDelaySeconds: 5
timeoutSeconds: 1
volumes:
- name: gitlab
persistentVolumeClaim:
claimName: gitlab
---
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
EOF
等待gitlab 容器状态 running & kubectl get svc -n kube-ops
4 . 访问主机ip+svc 对外暴露端口验证
备份原有docker gitlab环境项目备份:
1 . 进入gitlab容器,备份仓库:
docker exec -it f80f368d857c bash
gitlab-rake gitlab:backup:create
2 . 进入宿主机挂载的对应目录发现备份文件生成&将备份文件copy 到kubernetes集群中master节点
cd /data/docker/gitlab/data/backups
kubectl cp 1567739719_2019_09_06_10.8.3_gitlab_backup.tar gitlab-78b9f67956-s9nmr:/var/opt/gitlab/backups -n kube-ops
kubectl exec -it gitlab-78b9f67956-s9nmr bash -n kube-ops
gitlab-rake gitlab:backup:restore
出现以下报错。看日志发现docker compose 环境下gitlab版本为10.8.3 。kubernetes集群版本gitlab image 为11.1.4.这也是比较推荐用详细版本号不要用latest版本的原因。
修改gitlab.yaml 文件gitlab image 版本号 & kubectl apply gitlab.yaml ,出现下图所示还原完成
用原有账号密码登录验证项目完整导入
域名代理方式用了华为云的slb
域名方式验证
找一台服务器:
ssh-keygen -t rsa -C "kubectladmin@k8s-node1.com"
添加ssh key 到gitlab 验证ssh访问ok
文章转载请说明出处:八零岁月 » docker搭建gitlab迁移到kubernetes集群
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