在CentOS上实现GitLab的高可用性通常涉及多个组件的配置,包括负载均衡器、多个GitLab实例以及可能的数据库复制。以下是实现GitLab高可用性的一种常见方法:
curl
, policycoreutils-python
, openssh-server
等。在所有节点上安装GitLab。你可以使用官方的安装脚本或者手动安装。
curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.rpm.sh | sudo bash
sudo EXTERNAL_URL="http://your-gitlab-domain.com" yum install gitlab-ce
curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.rpm.sh | sudo bash
sudo yum install gitlab-ce
编辑/etc/gitlab/gitlab.rb
文件,设置外部URL:
external_url 'http://your-gitlab-domain.com'
使用Nginx或HAProxy作为负载均衡器。
upstream gitlab {
server gitlab-node1.example.com;
server gitlab-node2.example.com;
}
server {
listen 80;
server_name your-gitlab-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;
}
}
为了实现数据库的高可用性,可以使用PostgreSQL的主从复制。
在所有节点上安装PostgreSQL:
sudo yum install postgresql-server postgresql-contrib
sudo systemctl start postgresql
sudo systemctl enable postgresql
主节点配置:
/var/lib/pgsql/data/postgresql.conf
,设置listen_addresses = '*'
。/var/lib/pgsql/data/pg_hba.conf
,添加允许从节点连接的条目。sudo systemctl restart postgresql
从节点配置:
/var/lib/pgsql/data/postgresql.conf
,设置listen_addresses = '*'
。/var/lib/pgsql/data/pg_hba.conf
,添加允许主节点连接的条目。sudo su - postgres
psql -c "CREATE USER replicator WITH REPLICATION PASSWORD 'your_password' LOGIN;"
psql -c "CREATE DATABASE gitlabhq_production OWNER replicator;"
psql -c "GRANT ALL PRIVILEGES ON DATABASE gitlabhq_production TO replicator;"
psql -c "SELECT pg_create_restore_point('gitlab_restore_point');"
/var/lib/pgsql/data/recovery.conf
:standby_mode = 'on'
primary_conninfo = 'host=master_ip port=5432 user=replicator password=your_password'
restore_command = 'cp /var/lib/pg_rewind/archive/%f %p'
trigger_file = '/tmp/postgresql.trigger.5432'
sudo systemctl restart postgresql
编辑/etc/gitlab/gitlab.rb
文件,配置GitLab使用复制数据库:
gitlab_rails['db_adapter'] = "postgresql"
gitlab_rails['db_host'] = "replica_ip"
gitlab_rails['db_port'] = 5432
gitlab_rails['db_username'] = "replicator"
gitlab_rails['db_password'] = "your_password"
gitlab_rails['db_database'] = "gitlabhq_production"
使用Prometheus和Grafana进行监控和报警。
sudo yum install prometheus grafana
sudo systemctl start prometheus
sudo systemctl enable prometheus
sudo systemctl start grafana-server
sudo systemctl enable grafana-server
编辑/etc/prometheus/prometheus.yml
文件,添加GitLab的监控配置。
在Grafana中添加Prometheus数据源,并导入GitLab的仪表盘。
确保所有组件正常工作,包括负载均衡器、GitLab实例和数据库复制。
通过以上步骤,你可以在CentOS上实现GitLab的高可用性。请根据实际情况调整配置。