查看“Replication-manager 集群管理组件”的源代码

replication-manager是signal18开源的一款数据库高可用工具，采用go语言开发。支持MySQL、MariaDB、Percona，其包含一下功能特性：

* 复制监控
* 复制拓扑检测
* 主从切换(switchover)
* 主节点故障切换(failover)
* 大多数场景下数据零丢失
* 多群集管理
* 支持proxy(proxysql,haproxy等)
下载安装介质
http://ci.signal18.io/mrm/builds/2.0/

 rpm -ivh replication-manager-osc-2.0.2-1.x86_64.rpm
创建数据目录

 mkdir manager
 chown -R mysql.mysql manager
编辑配置文件
 cat /etc/replication-manager/config.toml
 [mysql-luhx]
 title = "mysql-luhx"
 db-servers-hosts = "10.0.139.161:33006,10.0.139.162:33006,10.0.139.163:33006"
 db-servers-prefered-master = "10.0.139.161:33006"
 db-servers-ignored-hosts = "10.0.139.162:33006"
 db-servers-credential = "dba:Abcd123#"
 replication-credential = "repl:Abcd123#"
 failover-mode = "automatic"
 [Default]
 monitoring-datadir = "/service/mysql/manager"
 monitoring-sharedir = "/service/mysql/manager"
 log-level=7
 log-file = "/service/mysql/manager/replication-manager.log"
 replication-multi-master = false
 replication-multi-tier-slave = false
 failover-readonly-state = true
 http-server = true
 http-bind-address = "0.0.0.0"
 http-port = "8000"
启动replication-manager

 service replication-manager restart

访问dashboard


switchover

switchover可以在web控制台直接点击switchover

failover

当主节点关闭时，Fail count超过5次即立刻进行切换，当恢复时会自动加入新群集成为主节点