CentOS操做系统keepalived安装步骤

一、把keepalived-1.2.2.tar.gz、openssl-1.0.1c.tar.gz、popt-1.16.tar.gz上传至home目录；
二、安装OpenSSL
    # cd /home
    # tar -zxf openssl-1.0.1c.tar.gz
    # cd openssl-1.0.1c/
    # ./config  --prefix=/usr/local --openssldir=/usr/local/ssl
    # make && make install
    # ./config shared --prefix=/usr/local --openssldir=/usr/local/ssl
    # make clean
    # make && make install
二、安装popt
    # cd /home
    # tar zxvf popt-1.16.tar.gz
    # cd popt-1.16
    # ./configure
    # make
    # make install
三、安装keepalived
    # cd /home
    # tar -xzvf keepalived-1.2.2.tar.gz
    # cd keepalived-1.2.2
    # ./configure --prefix=/usr/local/keepalived
    # make
    # make install clean
四、删除安装文件
    # cd /home
    # rm -Rf openssl-1.0.1c
    # rm -Rf popt-1.16
    # rm -Rf keepalived-1.2.2
五、修改keepalived配置文件
    把文件keepalived.conf上传至/usr/local/keepalived/etc/keepalived覆盖原有文件
    主机修改virtual_ipaddress为虚拟IP地址
    从机把priority由100修改成99，而且修改virtual_ipaddress为虚拟IP地址
六、若是使用了iptables，则须要在iptables中加入一条配置
    -A INPUT -p vrrp -j ACCEPT
    iptables默认配置文件的位置在哪里
    /etc/sysconfig/iptables
    修改完后，重启iptables:service iptables restart
六、启动keepalived和开机启动
    # cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
        # cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/ 
    # mkdir /etc/keepalived 
    # cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
    # cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
    # chkconfig --level 2345 keepalived on
    # service keepalived start