在MySQL高可用环境中,如何配置Keepalived以实现虚拟IP的自动切换?请提供详细的配置步骤和示例。
时间: 2024-11-08 08:30:02 浏览: 33
为了实现MySQL高可用环境下的虚拟IP自动切换,Keepalived的配置是关键。以下详细步骤和示例将指导你如何进行配置:
参考资源链接:[MySQL主备切换实战:Keepalived与虚拟IP部署](https://wenku.csdn.net/doc/6412b78dbe7fbd1778d4ab64?spm=1055.2569.3001.10343)
1. 安装Keepalived:
在Master和Slave服务器上执行以下命令以安装Keepalived:
```bash
yum install -y keepalived
```
确保Keepalived服务在系统启动时自动运行:
```bash
chkconfig keepalived on
```
2. 配置Keepalived:
编辑`/etc/keepalived/keepalived.conf`文件,根据你的环境设置以下参数:
全局配置:
```conf
global_defs {
notification_email {
***
}
notification_email_***
smtp_server ***.*.*.*
smtp_connect_timeout 30
router_id MySQL_HA
}
```
VRRP同步组配置:
```conf
vrrp_sync_group VG1 {
group {
VI_1
}
}
```
VRRP实例配置:
```conf
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
***.***.*.***
}
}
```
检查MySQL运行状况的脚本配置(`/root/keepalived_check_mysql.sh`):
```bash
#!/bin/bash
# 检查MySQL服务是否运行
/usr/bin/nc -w1 ***.*.*.***06 </dev/null > /dev/null 2>&1
if [ $? -eq 0 ]; then
exit 0
else
exit 1
fi
```
在Keepalived配置中引用该脚本:
```conf
vrrp_script check_mysql {
script
参考资源链接:[MySQL主备切换实战:Keepalived与虚拟IP部署](https://wenku.csdn.net/doc/6412b78dbe7fbd1778d4ab64?spm=1055.2569.3001.10343)
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