在CentOS上部署GitLab高可用集群涉及多个步骤,包括设置负载均衡器、配置多个GitLab实例以及确保数据同步。以下是一个基本的指南:
在所有服务器上安装必要的软件包:
sudo yum install -y gitlab-ce gitlab-ce-cli postgresql-server redis
在主服务器上配置PostgreSQL:
sudo systemctl start postgresql
sudo systemctl enable postgresql
sudo passwd postgres
然后,切换到postgres
用户并创建一个新的数据库和用户:
sudo -u postgres psql
CREATE DATABASE gitlabhq_production;
CREATE USER gitlab WITH ENCRYPTED PASSWORD 'your_password';
GRANT ALL PRIVILEGES ON DATABASE gitlabhq_production TO gitlab;
\q
在主服务器上启动Redis:
sudo systemctl start redis
sudo systemctl enable redis
在所有服务器上安装GitLab:
sudo curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.rpm.sh | sudo bash
sudo EXTERNAL_URL="http://your_domain.com" yum install -y gitlab-ce
编辑/etc/gitlab/gitlab.rb
文件,配置外部URL和数据库:
external_url 'http://your_domain.com'
gitlab_rails['gitlab_shell_ssh_port'] = 2222
postgresql['listen_address'] = '0.0.0.0'
postgresql['port'] = 5432
gitlab_rails['lfs_enabled'] = true
gitlab_rails['lfs_store_path'] = "/var/opt/gitlab/lfs"
gitlab_rails['lfs_ssh_port'] = 2223
使用Nginx作为负载均衡器:
sudo yum install -y nginx
编辑Nginx配置文件/etc/nginx/conf.d/gitlab.conf
:
upstream gitlab {
server gitlab_primary_ip;
server gitlab_secondary_ip;
server gitlab_tertiary_ip;
}
server {
listen 80;
server_name your_domain.com;
location / {
proxy_pass http://gitlab;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
在所有服务器上启动并启用GitLab和Nginx服务:
sudo systemctl start gitlab
sudo systemctl enable gitlab
sudo systemctl start nginx
sudo systemctl enable nginx
为了实现高可用性,你需要配置多个GitLab实例,并确保它们之间的数据同步。可以使用Pacemaker和Corosync来管理集群:
sudo yum install -y pacemaker pcs
sudo systemctl start pcsd
sudo systemctl enable pcsd
然后,初始化集群并添加节点:
sudo pcs cluster auth gitlab_primary_ip gitlab_secondary_ip gitlab_tertiary_ip
sudo pcs cluster setup --name gitlab_cluster gitlab_primary_ip gitlab_secondary_ip gitlab_tertiary_ip
sudo pcs cluster start --all
配置GitLab资源以确保它们在集群中正确运行:
sudo pcs resource create gitlab_web appdynamics gitlab_web_url=http://your_domain.com port=80
sudo pcs resource create gitlab_postgres ocf:heartbeat:pgsql \
op monitor interval=30s \
params pgctl="/usr/bin/pg_ctl" \
pgdata="/var/opt/gitlab/postgresql/data/pgdata" \
user="gitlab" password="your_password" \
dbname="gitlabhq_production"
sudo pcs resource create gitlab_redis ocf:heartbeat:redis \
op monitor interval=30s \
params redis="/usr/bin/redis-server" \
pidfile="/var/run/redis/redis-server.pid"
通过以上步骤,你可以在CentOS上部署一个基本的GitLab高可用集群。根据实际需求,可能需要进一步调整和优化配置。