centos7中如何安装配置keepalived

centos7系统中如何安装配置keepalived？相信大部分人都还没学会这个技能，为了让大家学会，给大家总结了以下内容，话不多说，一起往下看吧。

一、基础环境

VIP 10.1.1.111

二、安裝nginx

1. 安裝nignx

   yum install nginx -y

2. 修改nginx配置文件

   • master

     echo 'this is master 31' > /usr/share/nginx/html/index.html

   • slave

     echo 'this is slave 32' >  /usr/share/nginx/html/index.html 

3. 启动nginx

   systemctl start nginx 

4. 测试nginx启动

   curl localhostthis is master

三、安装keepalived

1、 创建依赖环境

yum -y install openssl-devel gcc gcc-c++mkdir /etc/keepalivedwget https://www.keepalived.org/software/keepalived-2.0.18.tar.gz

2、安装keepalived

tar -zxvf keepalived-2.0.18.tar.gzmv keepalived-2.0.18 /usr/local/keepalivedcd /usr/local/keepalived./configure && make && make install

3、创建启动文件

cp  -a /usr/local/etc/keepalived   /etc/init.d/cp  -a /usr/local/etc/sysconfig/keepalived    /etc/sysconfig/cp  -a /usr/local/sbin/keepalived    /usr/sbin/

4、创建配置文件

1. master

   cat > /etc/keepalived/keepalived.conf << EOF! Configuration File for keepalivedglobal_defs {       router_id 31} vrrp_instance VI_1 {       state MASTER       interface ens33       virtual_router_id 3       mcast_src_ip 10.1.1.132       priority 200       advert_int 1        authentication {               auth_type PASS               auth_pass 123456       }       virtual_ipaddress {               10.1.1.111/24       }}EOF

2. slave

   cat > /etc/keepalived/keepalived.conf << EOF! Configuration File for keepalivedglobal_defs {       router_id 32} vrrp_instance VI_1 {       state BACKUP       interface ens33       virtual_router_id 3       mcast_src_ip 10.1.1.132       priority 90        advert_int 1        authentication {               auth_type PASS               auth_pass 123456       }       virtual_ipaddress {               10.1.1.111/24       }}EOF

5、启动keepalived

systemctl start keepalivedsystemctl enable keepalived

四、测试

1、在两台服务器上测试

1. master

   $ curl localhostthis is masterroot@centos7[14:46:07]:~$ curl 10.1.1.111this is masterroot@centos7[15:03:29]:~

2. slave

   $ curl localhostthis is slaveroot@centos7[15:03:59]:/etc/keepalived$ curl 10.1.1.111this is master

2、关闭master的keepalived模仿down机

1. master关闭keepalived

   $ systemctl stop keepalived 

2. 在slave上面进行测试

$  curl localhostthis is slaveroot@centos7[15:10:29]:/etc/keepalived$ curl 10.1.1.111this is slave

keepalived完成

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