keepalived安装配置

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下载源码包,直接上官方网站

解压

tar -xzvf keepalived-1.2.7.tar.gz

编译安装,没什么特别的,指定一下安装目录即可

# cd keepalived-1.2.7
# ./configure --prefix=/usr/local/keepalived-1.2.7
# make
# make install

添加软链,升级测试方便

# cd /usr/local/
# ln -s keepalived-1.2.7/ keepalived
# ln -s /usr/local/keepalived/sbin/keepalived /usr/bin/

添加keepalived配置文件

# mkdir /etc/keepalived
# touch /etc/keepalived/keepalived.conf

把如下内容添加进到keepalived.conf

! Configuration File for keepalived

global_defs {
    router_id nginx-proxy-ha
}

vrrp_script check_nginx_php {
    script "/usr/local/keepalived/sbin/check_nginx_php.sh"
    interval 5
    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 1234
    }
    track_interface {
        eth0
    }
    track_script {
        check_nginx_php
    }
    virtual_ipaddress {
        192.168.1.100
    }
    virtual_ipaddress {
        192.168.1.99
    }
}

把对应的IP地址替换成自己内网IP即可

# touch /etc/sysconfig/keepalived

添加如下内容

# Options for keepalived. See `keepalived --help' output and keepalived(8) and
# keepalived.conf(5) man pages for a list of all options. Here are the most
# common ones :
#
# --vrrp               -P    Only run with VRRP subsystem.
# --check              -C    Only run with Health-checker subsystem.
# --dont-release-vrrp  -V    Dont remove VRRP VIPs & VROUTEs on daemon stop.
# --dont-release-ipvs  -I    Dont remove IPVS topology on daemon stop.
# --dump-conf          -d    Dump the configuration data.
# --log-detail         -D    Detailed log messages.
# --log-facility       -S    0-7 Set local syslog facility (default=LOG_DAEMON)
#

KEEPALIVED_OPTIONS="-D"

添加如下开机启动的脚本

# touch /etc/rc.d/init.d/keepalived

内容如下

#!/bin/sh
#
# Startup script for the Keepalived daemon
#
# processname: keepalived
# pidfile: /var/run/keepalived.pid
# config: /etc/keepalived/keepalived.conf
# chkconfig: - 21 79
# description: Start and stop Keepalived

# Source function library
. /etc/rc.d/init.d/functions

# Source configuration file (we set KEEPALIVED_OPTIONS there)
. /etc/sysconfig/keepalived

RETVAL=0

prog="keepalived"

start() {
    echo -n $"Starting $prog: "
    daemon keepalived ${KEEPALIVED_OPTIONS}
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog
}

stop() {
    echo -n $"Stopping $prog: "
    killproc keepalived
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog
}

reload() {
    echo -n $"Reloading $prog: "
    killproc keepalived -1
    RETVAL=$?
    echo
}

# See how we were called.
case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    reload)
        reload
        ;;
    restart)
        stop
        start
        ;;
    condrestart)
        if [ -f /var/lock/subsys/$prog ]; then
            stop
            start
        fi
        ;;
    status)
        status keepalived
        ;;
    *)
        echo "Usage: $0 {start|stop|reload|restart|condrestart|status}"
        exit 1
esac

exit $RETVAL