lvs+keepalived+nginx高可用集群
- 2021-03-09 16:56:00
- admin 原创
- 2419
lvs+keepalived+nginx高可用集群
1、首先我找了两台机器
机器的ip是,192.168.56.101和192.168.56.102
设置的虚拟机的ip是:192.168.56.103
101和102分别装上keepalived和nginx
nginx在博客中已经安装过,本文主要安装keepalived
2、安装keepalived
yum -y install ipvsadm
重启命令
systemctl restart keepalived
安装之后,vi /etc/keepalived/keepalived.conf
配置文件如下:
102是备份的,配置文件如下:
! Configuration File for keepalived global_defs { router_id lvs102 } vrrp_instance VI_1 { state BACKUP interface eth1 virtual_router_id 101 priority 90 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.103 } } virtual_server 192.168.56.103 80 { delay_loop 6 lb_algo rr lb_kind DR #persistence_timeout 50 protocol TCP real_server 192.168.56.101 80 { weight 1 TCP_CHECK { connect_timeout 2 nb_get_retry 2 connect_port 80 delay_befor_retry 3 } } real_server 192.168.56.102 80 { weight 1 TCP_CHECK { connect_timeout 2 nb_get_retry 2 connect_port 80 delay_befor_retry 3 } } }
101是主的配置文件如下:
! Configuration File for keepalived global_defs { router_id lvs101 } vrrp_instance VI_1 { state MASTER interface eth1 virtual_router_id 101 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.103 } } virtual_server 192.168.56.103 80 { delay_loop 6 lb_algo rr lb_kind DR #persistence_timeout 50 protocol TCP real_server 192.168.56.101 80 { weight 1 TCP_CHECK { connect_timeout 2 nb_get_retry 2 connect_port 80 delay_befor_retry 3 } } real_server 192.168.56.102 80 { weight 1 TCP_CHECK { connect_timeout 2 nb_get_retry 2 connect_port 80 delay_befor_retry 3 } } }3、配置之后分别安装ipvs
yum -y install ipvsadm
然后会出现错误执行下面的就可以了
ipvsadm --save > /etc/sysconfig/ipvsad
删除集群
ipvsadm -C
查看集群
ipvsadm -Ln
重启ipvs
systemctl restart ipvsadm.service
ipvs的状态查看
4、两台机器都要执行如下:
安装ifconfig
yum install net-tools.x86_64
ifconfig lo:0 192.168.56.103 netmask 255.255.255.255 up(如果不执行,会出现能ping不通的情况,也访问不了的情况)
5、然后查看效果
停到nginx或者keepalived会出现不同的效果
7、上面的方式不能修改端口号,如果端口号修改了,就会出现ping通,但是打不开的效果
可以使用下面的方式添加
ipvsadm -a -t 192.168.56.103:80 -r 192.168.56.101:80 -m -w 1
ipvsadm -a -t 192.168.56.103:80 -r 192.168.56.102:80 -m -w 1
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