keepalived 高可用，监控web服务器状态

来源：互联网发布：淘宝投诉管理在哪编辑：程序博客网时间：2024/06/07 09:48

一、keepalived 高可用，监控web服务器状态

4.1 安装两台机器，一组一丛

yum install -y keepalived

主机器配置，虚拟ip为：192.168.1.100

vrrp_instance VI_1 {    state MASTER  # 备用服务器上为BACKUP    interface eth0    virtual_router_id 51    priority 100 #备用服务器上为90    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        192.168.1.100    }} virtual_server 192.168.1.100 80 {    delay_loop 6 # 每个6秒查询Realserver状态    lb_algo rr   # lvs算法    lb_kind DR   # Direct Route    persistence_timeout 0 # 同一IP链接60秒内被分配到同一台realserver    protocol TCP            #用tcp协议检查realserver状态     real_server 192.168.1.27 80{        weight 100        TCP_CHECK {            connect_timeout 10 #10秒钟无响应超时            nb_get_retry 3            delay_before_retry 3            connect_port 80        }    }     real_server 192.168.1.28 80{        weight 100        TCP_CHECK {            connect_timeout 10 #10秒钟无响应超时            nb_get_retry 3            delay_before_retry 3            connect_port 80        }    }}

keepalived从机器上

vrrp_instance VI_1 {    state BACKUP  # 备用服务器上为BACKUP    interface eth0    virtual_router_id 51    priority 90 #备用服务器上为90    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        192.168.1.100    }} virtual_server 192.168.1.100 80 {    delay_loop 6 # 每个6秒查询Realserver状态    lb_algo rr   # lvs算法    lb_kind DR   # Direct Route    persistence_timeout 0 # 同一IP链接60秒内被分配到同一台realserver    protocol TCP            #用tcp协议检查realserver状态     real_server 192.168.1.27 80{        weight 100        TCP_CHECK {            connect_timeout 10 #10秒钟无响应超时            nb_get_retry 3            delay_before_retry 3            connect_port 80        }    }     real_server 192.168.1.28 80{        weight 100        TCP_CHECK {            connect_timeout 10 #10秒钟无响应超时            nb_get_retry 3            delay_before_retry 3            connect_port 80        }    }}

启动主和备用机器的keepalived服务

/etc/init.d/keepalived start

查看端口转发规则

ipvsadm -ln

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