2022-4-11-keepalived总结

基本操作、修改配置文件、开始

基本操作

1）安装

yum install keepalived -y

2）配置文件

/etc/keepalived/keepalived.conf

3）日志文件

/var/log/messages

4）卸载

yum remove keepalived

修改配置文件

vi /etc/keepalived/keepalived.conf

执行set nu，再将光标移动到35行，按dG，删除掉35行以后的内容

global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
   # vrrp_strict 这一行注释掉
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_instance VI_1 实例组名 {
    state MASTER 角色名(MASTER/BACKUP)
    interface eth0 网卡名称
    virtual_router_id 51 组编号，服务器之间亚要保持一致
    priority 100 权重，用于选举
    advert_int 1
    authentication {
        auth_type PASS 授权类型
        auth_pass 1111 组密码，服务器间密码要保持一致
    }
    virtual_ipaddress {
        10.0.1.100 虚拟的ip地址，集群中的机器要保持一致
   }
}

开始

1）关闭NetworkManager

systemctl disable NetworkManager
systemctl stop NetworkManager

2）启动

systemctl start keepalived

执行ip a检查是否生效

3）停止

pkill keepalived

4）报错

无法启动，日志中出现(VI_1): Cannot find an IP address to use for interface ens33

ifconfig eth1 172.16.20.101/16 up