nginx+keepalived基本服务器宕机的主从切换配置

nginx+keepalived高可用服务器宕机解决方案

1.基本服务器宕机的主从切换配置

两台nginx服务器,分别安装keepalived,配置/etc/keepalived/keepalived.conf

主从配置:

主nginx

修改主nginx下/etc/keepalived/keepalived.conf文件

备nginx

修改备nginx下/etc/keepalived/keepalived.conf文件

配置备nginx时需要注意:需要修改state为BACKUP , priority比MASTER低,virtual_router_id和master的值一致

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此时如果主机宕机则备机会顶替主机获得虚拟ip

2.基于nginx进程死掉的主从切换配置

keepalived是通过检测keepalived进程是否存在判断服务器是否宕机,如果keepalived进程在但是nginx进程不在了那么keepalived是不会做主备切换,所以我们需要写个脚本来监控nginx进程是否存在,如果nginx不存在就将keepalived进程杀掉。

在主nginx上需要编写nginx进程检测脚本(check_nginx.sh),判断nginx进程是否存在,如果nginx不存在就将keepalived进程杀掉,check_nginx.sh内容如下:

将check_nginx.sh拷贝至/etc/keepalived下,

注意修改/etc/keepalived/check_nginx.sh的可执行权限

修改主nginx的keepalived.conf,添加脚本定义检测:

注意下边红色标识地方:

修改后重启keepalived

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转载自www.cnblogs.com/ng-xixi/p/9925582.html
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