在Ubuntu上部署SQLAdmin集群需要考虑多个方面,包括数据库的选择、集群架构的设计、负载均衡、故障转移和高可用性等。以下是一个基本的部署方案,假设我们使用的是MySQL数据库和Keepalived来实现高可用性。
sudo apt update
sudo apt upgrade -y
sudo apt install mysql-server mysql-client keepalived -y
编辑MySQL配置文件 /etc/mysql/mysql.conf.d/mysqld.cnf 或 /etc/mysql/my.cnf,添加以下内容:
[mysqld]
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
binlog_do_db = your_database_name
auto_increment_increment = 2
auto_increment_offset = 1
重启MySQL服务:
sudo systemctl restart mysql
编辑MySQL配置文件 /etc/mysql/mysql.conf.d/mysqld.cnf 或 /etc/mysql/my.cnf,添加以下内容:
[mysqld]
server-id = 2
relay_log = /var/log/mysql/mysql-relay-bin.log
log_bin = /var/log/mysql/mysql-bin.log
binlog_do_db = your_database_name
auto_increment_increment = 2
auto_increment_offset = 2
read_only = 1
重启MySQL服务:
sudo systemctl restart mysql
在主节点上创建一个用于复制的用户:
CREATE USER 'replicator'@'%' IDENTIFIED BY 'password';
GRANT REPLICATION SLAVE ON *.* TO 'replicator'@'%';
FLUSH PRIVILEGES;
在主节点上获取二进制日志位置:
SHOW MASTER STATUS;
记录下 File 和 Position 的值。
在从节点上配置复制:
CHANGE MASTER TO
MASTER_HOST='master_ip',
MASTER_USER='replicator',
MASTER_PASSWORD='password',
MASTER_LOG_FILE='recorded_file_name',
MASTER_LOG_POS=recorded_position;
START SLAVE;
sudo apt install keepalived -y
编辑Keepalived配置文件 /etc/keepalived/keepalived.conf,添加以下内容:
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 42
}
virtual_ipaddress {
192.168.1.100
}
}
virtual_server 192.168.1.100 3306 {
delay_loop 6
lb_algo rr
lb_kind DR
nat_mask 255.255.255.0
persistence_timeout 50
protocol TCP
real_server 192.168.1.1 3306 {
weight 1
TCP_CHECK {
connect_timeout 10
connect_port 3306
}
}
real_server 192.168.1.2 3306 {
weight 1
TCP_CHECK {
connect_timeout 10
connect_port 3306
}
}
}
重启Keepalived服务:
sudo systemctl restart keepalived
在主节点上:
SHOW SLAVE STATUS\G
确保 Slave_IO_Running 和 Slave_SQL_Running 都是 Yes。
sudo systemctl status keepalived
确保Keepalived服务正常运行,并且虚拟IP地址已经绑定到主节点上。
使用Prometheus和Grafana来监控MySQL集群的性能和状态。
定期检查MySQL和Keepalived的日志文件,确保没有异常信息。
sudo tail -f /var/log/mysql/error.log
sudo tail -f /var/log/keepalived/keepalived.log
通过以上步骤,你可以在Ubuntu上部署一个基本的SQLAdmin集群,实现高可用性和负载均衡。根据实际需求,你可能需要进一步优化和扩展这个方案。