keepalived(nginx的高可用)安装文档

1. 安装环境

su - root

yum -y install kernel-devel*

yum -y install openssl-*

yum -y install popt-devel

yum -y install lrzsz

yum -y install openssh-clients

yum -y install libnl libnl-devel popt

2. 安装keepalived

2.1. 安装keepalived

将keepalived-1.2.15.tar.gz上传到服务器/usr/local/下。

cd /usr/local

tar -zxvf keepalived-1.2.15.tar.gz

cd keepalived-1.2.15

执行配置命令

./configure --prefix=/usr/local/keepalived

3、编译

make

4、安装

make install

至此安装成功

5、拷贝执行文件

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

6、将init.d文件拷贝到etc下,加入开机启动项

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/keepalived

7、将keepalived文件拷贝到etc下，加入网卡配置

cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

8、创建keepalived文件夹

mkdir -p /etc/keepalived

9、将keepalived配置文件拷贝到etc下

cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf

10、添加可执行权限

chmod +x /etc/init.d/keepalived

2.2. 加入开机启动：

chkconfig --add keepalived #添加时必须保证/etc/init.d/keepalived存在

chkconfig keepalived on

添加完可查询系统服务是否存在：chkconfig --list

2.3. 启动keepalived

启动：service keepalived start

停止：service keepalived stop

重启：service keepalived restart

3. 配置日志文件

1.将keepalived日志输出到local0：

vi /etc/sysconfig/keepalived

KEEPALIVED_OPTIONS="-D -d -S 0"

2.在/etc/rsyslog.conf里添加:

local0.*  /var/log/keepalived.log

3.重新启动keepalived和rsyslog服务：

service rsyslog restart

service keepalived restart

4. 打开防火墙的通讯地址

iptables -A INPUT -d 224.0.0.18 -j ACCEPT

/etc/rc.d/init.d/iptables save