mysql集群之keepalived简单搭建

虚幻0516

　　1安装必须的相关包
　　yum -y install  kernel-devel  openssl* popt popt-devel
　　

　　2下载安装
　　wget http://www.keepalived.org/software/keepalived-1.2.9.tar.gz
　　tar  -xf keepalived-1.2.9.tar.gz
　　mkdir /usr/local/keepalived
　　cd ~/ keepalived-1.2.9
　　./configure  --prefix=/usr/local/keepalived/
　　
　　make && make install
　　cp /usr/local/keepalived/sbin/keepalived  /usr/sbin/
　　cp /usr/local/keepalived/etc/sysconfig/keepalived  /etc/sysconfig
　　cp /usr/local/keepalived/etc/rc.d/init.d/keepalived  /etc/init.d/
　　chmod +x /etc/init.d/keepalived
　　mkdir /etc/keepalived
　　cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived
　　

　　3修改配置文件如下
　　[root@M128 ~]# vim /etc/keepalived/keepalived.conf
　　global_defs {
　　notification_email {
　　jikaituo@126.com
　　}
　　notification_email_from jikaituo@126.com
　　smtp_server smtp.126.com   # 邮件服务器地址
　　smtp_connect_timeout 30     # 连接超时时间
　　router_id LVS_Master
　　}
　　vrrp_script chk_http_port {
　　script  "/etc/keepalived/check_haproxy.sh"    # haproxy运行检测脚本[haproxy宕掉重启haproxy服务]
　　interval        5                     # 脚本执行间隔
　　weight         -5                    # 执行脚本后优先级变更：5表示优先级+5;-5则表示优先级-5
　　}
　　vrrp_instance VI_A {
　　state MASTER                    # 主上此值为MASTER,从上为BACKUP
　　interface eth0
　　virtual_router_id 50           # 此值主从必须一致
　　priority 100
　　advert_int 1
　　authentication {                   # authentication两个参数值,主从也必须一致
　　auth_type PASS
　　auth_pass yiban
　　}
　　track_script {
　　chk_http_port
　　}
　　virtual_ipaddress {
　　192.168.78.220
　　}
　　}
　　

　　5启动keepalived
　　确保网络正常
　　service network restart (线上不要这么做)
　　/etc/init.d/keepalived start
　　查看结果
　　ip a