haproxy+keepalived 主备模式安装配置

桃扇骨 2022-07-15 01:42 252阅读 0赞

环境  
os：centos6.6  
keepalived+haproxy  
hapromaster  192.168.1.13  
haproslave   192.168.1.12  
vip 192.168.1.2  
1、keepalived安装  
yum install keepalived\*  
2、配置haproxy  
主  
cat /etc/keepalived/keepalived.conf   
! Configuration File for keepalived  
global\_defs \{  
   notification\_email \{  
     wolf@qq.com  
   \}  
   notification\_email\_from Alexandre.Cassen@firewall.loc  
   smtp\_server 192.168.1.1  
   smtp\_connect\_timeout 30  
   router\_id LVS\_DEVEL  
\}  
  
vrrp\_script chk\_haproxy \{   
        script "/root/ha.sh"  
        weight -20  
        interval 2                                       
\}   
vrrp\_instance VI\_1 \{  
    state MASTER  
    interface eth0  
    virtual\_router\_id 51  
    priority 110  
    advert\_int 1  
    track\_script \{  
        chk\_haproxy  
    \}  
    authentication \{  
        auth\_type PASS  
        auth\_pass 1111  
    \}  
    virtual\_ipaddress \{  
        192.168.1.2  
    \}  
    notify\_master /root/ha\_master.sh  
\}  
从  
! Configuration File for keepalived  
global\_defs \{  
   notification\_email \{  
     yujinga@wolf.com  
   \}  
   notification\_email\_from Alexandre.Cassen@firewall.loc  
   smtp\_server smtp.wolf.com  
   smtp\_connect\_timeout 30  
   router\_id LVS\_DEVEL  
\}  
vrrp\_instance VI\_1 \{  
    state BACKUP  
    interface eth0  
    virtual\_router\_id 51  
    priority 100  
    advert\_int 1  
    authentication \{  
        auth\_type PASS  
        auth\_pass 1111  
    \}  
    virtual\_ipaddress \{  
        192.168.1.2  
    \}  
    notify\_master /root/ha\_master.sh  
\}  
  
相关脚本  
\[root@hapromaster ~\]\# cat ha.sh   
\#!/bin/bash  
a=\`ps -ef | grep haproxy| grep -v grep |wc -l\`  
if \[ $a == 0 \]  
    then  
        /etc/init.d/keepalived stop  
        echo "haproxy is down,stoping keepalive..."  
    exit  
fi  
\[root@hapromaster ~\]\# cat ha\_master.sh   
\#!/bin/bash  
sleep 3  
/etc/init.d/haproxy reload && echo "haproxy is reload........"  
3、安装haproxy  
yum install haproxy\*  
vi /etc/haproxy/haproxy.conf  
\#---------------------------------------------------------------------  
\# Example configuration for a possible web application.  See the  
\# full configuration options online.  
\#  
\#   http://haproxy.1wt.eu/download/1.4/doc/configuration.txt  
\#  
\#---------------------------------------------------------------------  
\#---------------------------------------------------------------------  
\# Global settings  
\#---------------------------------------------------------------------  
global  
    log 127.0.0.1 local0 info \#\[err warning info debug\]  
    maxconn 65535  
    daemon  
    nbproc 2  
    user nobody  
    group nobody  
\#---------------------------------------------------------------------  
\# common defaults that all the 'listen' and 'backend' sections will  
\# use if not designated in their block  
\#---------------------------------------------------------------------  
defaults  
        log     global  
        mode    http  
        option  dontlognull  
        option  httpclose  
        option  abortonclose  
        retries 3  
        option  redispatch  
        maxconn 65535  
        timeout connect 900000  
        timeout client 1800000  
        timeout server 1800000  
        option  httplog  
        option  forwardfor  
        stats   enable  
        stats   uri     /admin?stats  
        stats   auth    admin:1qazxsw2  
        stats   refresh 10s  
\#---------------------------------------------------------------------  
\# main frontend which proxys to the backends  
\#---------------------------------------------------------------------  
frontend web\_wumart  
        mode http  
        maxconn 65535  
        bind :80  
        acl is\_laolang hdr\_beg(host) -i laolang.wolf.com  
        acl is\_gateway hdr\_beg(host) -i gateway.wolf.com  
        acl is\_wolf   hdr\_beg(host) -i wolf.wolf.com  
  
  
        use\_backend laolang\_server if is\_laolang  
        use\_backend gateway\_server if is\_gateway  
        use\_backend wolf\_server if is\_wolf  
\#---------------------------------------------------------------------  
\# round robin balancing between the various backends  
\#---------------------------------------------------------------------  
backend laolang\_server  
        mode http  
        balance roundrobin  
        stats   hide-version  
        option  httpclose  
        option forwardfor  
        server web1 192.168.1.8:80  check inter 1500 rise 3 fall 3 weight 3  
        server web2 192.168.1.10:80  check inter 1500 rise 3 fall 3 weight 3  
backend gateway\_server  
        mode http  
        balance roundrobin  
        stats   hide-version  
        option  httpclose  
        option forwardfor  
        server web1 192.168.2.5:80  check inter 1500 rise 3 fall 3 weight 3  
        server web2 192.168.2.6:80  check inter 1500 rise 3 fall 3 weight 3  
backend wolf\_server  
        mode http  
        balance roundrobin  
        stats   hide-version  
        option  httpclose  
        option forwardfor  
        server web1 192.168.1.9:80  check inter 1500 rise 3 fall 3 weight 3  
        server web2 192.168.1.11:80  check inter 1500 rise 3 fall 3 weight 3  
   
4、启动停止  
service keepalived start  
service keepalived restart  
service keepalived stop  
service haproxy start  
service haproxy stop  
service haproxy restart  
  
5、测试切换  
停止主机haproxy  
ip查看地址  
  
6、监控  
http://192.168.1.12/admin?stats  
http://192.168.1.13/admin?stats