keepalived双机热备nginx怎么配置

yum install keepalived

#!/bin/bashcount=0for (( k=0; k<2; k++ ))do check_code=$( curl --connect-timeout 3 -sl -w "%{http_code}\n" http://localhost:81 -o /dev/null ) if [ "$check_code" != "200" ]; then  count=count +1  continue else  count = 0  break fidoneif [ "$count" != "0" ]; then killall keepalived exit 1else exit 0fi

vi /etc/keepalived/keepalived.conf

! configuration file for keepalivedvrrp_script chk_nginx { script "/etc/keepalived/check_nginx.sh" # 心跳检测角本 interval 2 #脚本执行间隔，每2s检测一次 weight -5 #脚本结果导致的优先级变更，检测失败（脚本返回非0）则优先级 -5 fall 3 #检测连续2次失败才算确定是真失败。会用weight减少优先级（1-255之间） rise 2 #检测1次成功就算成功。但不修改优先级}vrrp_instance vi_1 { state master #指定keepalived的角色，master表示此主机是主服务器，backup表示此主机是备用服务器 interface eth0 #指定监测网络的接口。实例绑定的网卡，因为在配置虚拟ip的时候必须是在已有的网卡上添加的 mcast_src_ip 192.168.0.118 ## 发送多播数据包时的源ip地址 virtual_router_id 51 #虚拟路由标识，master和backup必须是一致的 priority 100 #定义优先级，数字越大，优先级越高 advert_int 2 #设定master与backup负载均衡器之间同步检查的时间间隔，单位是秒 authentication { #设置验证类型和密码。主从必须一样  auth_type pass #设置vrrp验证类型，主要有pass和ah两种  auth_pass 1111 #设置vrrp验证密码，在同一个vrrp_instance下，master与backup必须使用相同的密码才能正常通信 } virtual_ipaddress {  192.168.0.119 #vrrp 虚拟地址 如果有多个vip，换行填写 } track_script {  chk_nginx # 心跳脚本，即在 vrrp_script 部分指定的名字 }}

! configuration file for keepalivedvrrp_script chk_nginx { script "/etc/keepalived/check_nginx.sh" interval 2 weight -5}vrrp_instance vi_1 { state backup # 修改 interface eth0 mcast_src_ip 192.168.0.105 # 修改 为本机ip virtual_router_id 51 priority 90 #数字变小 advert_int 2 authentication {  auth_type pass  auth_pass 1111 } virtual_ipaddress {  192.168.0.119 } track_script {  chk_nginx }}

service keepalived start

rpm -qa zlibrpm -qa zlib-develrpm -qa opensslrpm -qa openssl-develrpm -qa pcrerpm -qa pcre-develrpm -qa gcc

yum -y install gcc zlib zlib-devel openssl openssl-devel pcre-devel

mkdir nginxsrccd nginxsrc/

wget http://nginx.org/download/nginx-1.13.9.tar.gztar zxvf nginx-1.13.9.tar.gzcd nginx-1.13.9/

./configure --prefix=/usr/local/nginx --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module

make&&make install

ps aux|grep nginx

vi /etc/rc.local

vi /usr/local/nginx/conf/nginx.conf

vi /usr/local/nginx/html/index.html

/usr/local/nginx/sbin/nginx -s reload

curl 192.168.0.119:81

 /usr/local/nginx/sbin/nginx -s stop

 curl 192.168.0.119:81