配置 Keepalived - 主

通过命令 vim keepalived.conf 打开配置文件

  1. global_defs {
  2.    # 路由id：当前安装keepalived的节点主机标识符，保证全局唯一
  3.    router_id keep_171
  4. }
  5. vrrp_instance VI_1 {
  6.     # 表示状态是MASTER主机还是备用机BACKUP
  7.     state MASTER
  8.     # 该实例绑定的网卡
  9.     interface ens33
  10.     # 保证主备节点一致即可
  11.     virtual_router_id 51
  12.     # 权重，master权重一般高于backup，如果有多个，那就是选举，谁的权重高，谁就当选
  13.     priority 100
  14.     # 主备之间同步检查时间间隔，单位秒
  15.     advert_int 2
  16.     # 认证权限密码，防止非法节点进入
  17.     authentication {
  18.         auth_type PASS
  19.         auth_pass 1111
  20.     }
  21.     # 虚拟出来的ip，可以有多个（vip）
  22.     virtual_ipaddress {
  23.         192.168.1.161
  24.     }
  25. }

查看网卡与绑定 ip

  1. ip addr

在 /sbin 启动 keepalived

  1. ./keepalived

查看进程

  1. ps -ef|grep keepalived

配置 Keepalived - 备

  1. global_defs {
  2.    router_id keep_172
  3. }
  4. vrrp_instance VI_1 {
  5.     # 备用机设置为BACKUP
  6.     state BACKUP
  7.     interface ens33
  8.     virtual_router_id 51
  9.     # 权重低于MASTER
  10.     priority 80
  11.     advert_int 2
  12.     authentication {
  13.         auth_type PASS
  14.         auth_pass 1111
  15.     }
  16.     virtual_ipaddress {
  17.         # 注意：主备两台的vip都是一样的，绑定到同一个vip
  18.         192.168.1.161
  19.     }
  20. }

keepalived 注册为系统服务

在 keepalived 解压后的安装包中，找到 init.d/keepalived 和 sysconfig/keepalived

  1. cd /tmp/keepalived-2.0.20/keepalived/etc/
  3. # 拷贝
  4. cp init.d/keepalived /etc/init.d/
  5. cp sysconfig/keepalived /etc/sysconfig/

刷新后即可使用

  1. systemctl daemon-reload
  1. # 启动keepalived
  2. systemctl start keepalived
  3. # 停止keepalived
  4. systemctl stop keepalived
  5. # 重启keepalived
  6. systemctl restart keepalived