Linux搭建环境之安装Keepalived篇

1.下载keepalived

wget http://www.keepalived.org/software/keepalived-1.2.18.tar.gz

2.解压安装：

tar -zxvf keepalived-1.2.18.tar.gz -C /usr/local/

3.下载插件openssl

yum install -y openssl openssl-devel（需要安装一个软件包）

4.开始编译keepalived

cd keepalived-1.2.18/ && ./configure --prefix=/usr/local/keepalived

5.make一下

make && make install

报错: eepalived执行./configure --prefix=/usr/local/keepalived时报错：configure: error: Popt libraries is required

出现此错误的原因：

未安装popt的开发包

解决方法：

yum install popt-devel

安装好popt的开发包。重新./configure 即可。

keepalived安装成Linux系统服务

将keepalived安装成Linux系统服务，因为没有使用keepalived的默认安装路径（默认路径：/usr/local）,安装完成之后，需要做一些修改工作：

首先创建文件夹，将keepalived配置文件进行复制：

mkdir /etc/keepalived
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
然后复制keepalived脚本文件：
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
ln -s /usr/local/sbin/keepalived /usr/sbin/
ln -s /usr/local/keepalived/sbin/keepalived /sbin/
可以设置开机启动：chkconfig keepalived on，到此我们安装完毕!

keepalived 常用命令

service keepalived start

service keepalived stop

启动报错Starting keepalived (via systemctl): Job for keepalived.service failed. See 'systemctl status keepalived.service' and 'journalctl -xn' for details.

解决办法

[root@edu-proxy-01 sbin]# cd /usr/sbin/  
[root@edu-proxy-01 sbin]# rm -f keepalived   
[root@edu-proxy-01 sbin]# cp /usr/local/keepalived/sbin/keepalived  /usr/sbin/

使用keepalived虚拟VIP

vi /etc/keepalived/keepalived.conf

vrrp_script chk_nginx {

script "/etc/keepalived/nginx_check.sh" #运行脚本，脚本内容下面有，就是起到一个nginx宕机以后，自动开启服务

interval 2 #检测时间间隔

weight -20 #如果条件成立的话，则权重 -20

}

# 定义虚拟路由，VI_1 为虚拟路由的标示符，自己定义名称

vrrp_instance VI_1 {

state MASTER #来决定主从

interface ens33 # 绑定虚拟 IP 的网络接口，根据自己的机器填写

virtual_router_id 121 # 虚拟路由的 ID 号，两个节点设置必须一样

mcast_src_ip 192.168.212.140 #填写本机ip

priority 100 # 节点优先级,主要比从节点优先级高

nopreempt # 优先级高的设置 nopreempt 解决异常恢复后再次抢占的问题

advert_int 1 # 组播信息发送间隔，两个节点设置必须一样，默认 1s

authentication {

auth_type PASS

auth_pass 1111

}

# 将 track_script 块加入 instance 配置块

track_script {

chk_nginx #执行 Nginx 监控的服务

}

virtual_ipaddress {

192.168.110.110 # 虚拟ip,也就是解决写死程序的ip怎么能切换的ip,也可扩展，用途广泛。可配置多个。

}

Linux搭建环境之安装Keepalived篇

keepalived安装成Linux系统服务

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