安装nginx
nginx 下载地址 http://nginx.org/download/nginx-1.8.0.tar.gz
安装nginx的依赖关系
yum install pcre pcre-devel openssl openssl-devel -y
创建用户 useradd www
接下来编译安装nginx
./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module
make make install
/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf 指定配置文件
/usr/local/nginx/sbin/nginx -s reload 启动nginx
nginx安装完成 我这里只安装一台 多台一样
keepalived 安装
keepalived 下载地址 http://www.keepalived.org/software/keepalived-1.2.19.tar.gz
安装基础环境
yum -y install gcc gcc-c++ pcre-devel zlib-devel openssl-devel
内核开发包安装
yum install kernel-devel kernel -y
编译安装keepalived
/configure --with-kernel-dir=/usr/src/kernels/2.6.32-573.3.1.el6.x86_64/
make && make install
将安装完的keepalived 拷贝到目录
DIR=/usr/local/
;cp $DIR/etc/rc.d/init.d/keepalived
/etc/rc.d/init.d/ ; cp $DIR/etc/sysconfig/keepalived /etc/sysconfig/ ;
mkdir -p /etc/keepalived ; cp $DIR/sbin/keepalived /usr/sbin/
chkconfig keepalived on
编辑配置文件 默认配置文件不存在
vim /etc/keepalived/keepalived.conf
msater 配置文件
! configuration file for keepalived
#by:v
global_defs {
}
vrrp_script chk_run {
script /root/my.sh
interval 2
weight 2
}
# VIP1 # 第一台
vrrp_instance VI_1 {
state MASTER
interface eth0
lvs_sync_daemon_inteface eth0
virtual_router_id 151
priority 102
advert_int 1
nopreempt #不抢占 当master挂了之后 飘到backup 上面 master修好之后 不抢占
authentication {
auth_typepass
auth_pass 1111
}
virtual_ipaddress {
192.168.80.43
}
track_script {
chk_run
}
}
# VIP2 # 第二台
vrrp_instance VI_1 {
state BACKUP
interface eth0
lvs_sync_daemon_inteface eth0
virtual_router_id 150
priority 100
advert_int 1
authentication {
auth_typepass
auth_pass 2222
}
virtual_ipaddress {
192.168.80.44
}
track_script {
chk_run
}
}
backup 配置文件
vim /etc/keepalived/keepalived.conf
vrrp_script chk_run {
script "/root/my.sh"
interval 2
weight 2
}
# VIP1
vrrp_instance VI_1 {
state BACKUP
interface eth0
lvs_sync_daemon_inteface eth0
virtual_router_id 151
priority 100
advert_int 1
authentication {
auth_typepass
auth_pass 1111
}
virtual_ipaddress {
192.168.80.43
}
track_script {
chk_run
}
}
# VIP2
vrrp_instance VI_1 {
state MASTER
interface eth0
lvs_sync_daemon_inteface eth0
virtual_router_id 150
priority 102
advert_int 1
nopreempt
authentication {
auth_typepass
auth_pass 2222
}
virtual_ipaddress {
192.168.80.44
}
track_script {
chk_run
}
}
在上面我们定义了引my.sh脚本 通过my.sh脚本检测 ngixn 是否正常 我们来写一个脚本
#!/bin/bash
A=`netstat -ltnp |grep 80 |wc -l`
if [ $A -eq 0 ];then
/etc/rc.d/init.d/keepalived stop
fi
chmod +x my.sh
启动keepalived服务 到此完成
/etc/rc.d/init.d/keepalived start