keepalived+mysql 高可用叢集

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mysql 為主主模式參考 https://my.oschina.net/sanmuyan/blog/877373

192.168.100.129	mysql 主節點/keepalived 主節點
192.168.100.130	mysql 備節點/keepalived 備節點
192.168.100.150	虛擬IP

主備節點

yum install keepalived -yvim  /etc/keepalived/keepalived.conf

! Configuration File for keepalivedvrrp_instance VI_1 {    state MASTER    #備節點設定為BACKUP    interface eth0    virtual_router_id 51 #主備保持一致    priority 100 #備節點90    advert_int 1    nopreempt    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        192.168.100.150  #虛擬IP    }}virtual_server 192.168.100.150 3306 { #虛擬IP    delay_loop 6    nat_mask 255.255.255.0    persistence_timeout 50    protocol TCP    real_server 192.168.100.129 3306 { #真實IP 備節點為192.168.100.130    weight 3    notify_down /root/mysql.sh   #如果本地IP 3306連接埠宕掉 則執行該指令碼（殺死keepalived進程）    TCP_CHECK {    connect_timeout 3       nb_get_retry 3           delay_before_retry 3   }}

[[email protected] ~]# vim mysql.sh#!/bin/bashpkill keepalived[[email protected] ~]# chmod +x mysql.sh 

實驗

 

說明keepalived已經開始工作

關閉主伺服器  短暫的逾時備伺服器接管了虛擬IP

 

keepalived進程正在運行

[[email protected] ~]# ps -el | grep keepalived1 S     0  16274      1  0  80   0 - 27926 poll_s ?        00:00:00 keepalived5 S     0  16275  16274  0  80   0 - 28487 poll_s ?        00:00:00 keepalived5 S     0  16276  16274  0  80   0 - 28457 poll_s ?        00:00:00 keepalived

[root@localhost ~]# systemctl stop mysqld  關閉mysql服務

keepalived 進程已經被kill

 

 

keepalived+mysql 高可用叢集