/*
typedef __u16 __bitwise __sum16;
typedef __u32 __bitwise __wsum;
*/
cd keepalived-1.1.15
./configure
make
make install
将keepalived作为系统服务启动
cp /usr/local/etc/rc.d/init.d/keepalived /etc/init.d/
cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
mkdir /etc/keepalived/
cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
cp /usr/local/sbin/keepalived /usr/sbin/
vi /etc/keepalived/keepalived.conf内容如下：
! Configuration File for keepalived
global_defs {
router_id LVA_DEVEL
}
vrrp_script chk_http_port {
script "/root/check_haproxy.sh"
interval 2
weight 2
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_http_port
}
virtual_ipaddress {
192.168.2.100
}
}
上面调用了一个脚本check_haproxy.sh，内容如下：
#!/bin/bash
A=`ps -C haproxy --no-header | wc -l`
if [ $A -eq 0 ];then
/usr/local/sbin/haproxy -f /usr/local/doc/haproxy/haproxy.cfg
echo "haproxy start"
sleep 3
if [ `ps -C haproxy --no-header | wc -l` -eq 0 ];then
/etc/init.d/keepalived stop
echo "keepalived stop"
fi
fi
3、BACKUP上安装haproxy，步骤就不详细介绍，和MASTER上面一样的。
haproxy.conf内容如下
global
log 127.0.0.1 local0
maxconn 4096
chroot /usr/local/doc/haproxy
uid 501
gid 501
daemon
nbproc 1
pidfile /usr/local/doc/haproxy/haproxy.pid
defaults
log 127.0.0.1 local3
mode http
option httplog
option httpclose
option dontlognull
option forwardfor
option redispatch
retries 2
maxconn 2000
balance roundrobin
stats uri /haproxy-status
stats hide-version
stats realm Gemini Haproxy
stats auth admin:admin
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen web_proxy 192.168.2.100:80
server web1 192.168.5.54:8080 cookie app1inst1 check inter 2000 rise 2 fall 5
server web2 192.168.5.57:8080 cookie app1inst2 check inter 2000 rise 2 fall 5
4、BACKUP上安装keepalived，步骤也不多介绍，keepalived.conf文件内容就两处有变化，红色字体标出
