nginx怎么结合keepalived实现高可用

yum install pcre-devel zlib zlib-devel openssl openssl-devel

tar zxvf nginx-1.12.2.tar.gz

mkdir -p /usr/local/nginx./configure --prefix=/usr/local/nginx

make && make install

cd /usr/local/nginx/sbin/./nginx./nginx -s stop./nginx -s start

yum install -y keepalived

vim /etc/keepalived/keepalived.conf

#新增的配置vrrp_script chk_http_port { script "/shell/nginx_check.sh" #脚本地址 interval 2 #检测脚本执行的间隔 weight 2 #比重}vrrp_instance vi_1 { state master #主服务器为master,从服务器为backup interface eth0 #网卡 virtual_router_id 51 #主、备机的virtual_router_id必须相同 priority 100 #主、备机不同的优先级，主机优先级较大，备机值较小，默认是100 advert_int 1 authentication {  auth_type pass  auth_pass 1111 } #虚拟ip地址 virtual_ipaddress {  192.168.126.88 }}

mkdir /shell/nginx_check.shvim /shell/nginx_check.sh

#!/bin/basha=`ps -c nginx –no-header |wc -l`if [ $a -eq 0 ];then  /usr/local/nginx/sbin/nginx  sleep 2  if [ `ps -c nginx --no-header |wc -l` -eq 0 ];then    killall keepalived  fifi

vrrp_instance vi_1 {  state backup #主服务器为master,从服务器为backup  interface eth0 #网卡  virtual_router_id 51 #主、备机的virtual_router_id必须相同  priority 50 #主、备机不同的优先级，主机优先级较大，备机值较小  advert_int 1  authentication {    auth_type pass    auth_pass 1111  }  #虚拟ip地址  virtual_ipaddress {    192.168.126.88  }}

service keepalived start

ip addr1: lo: <loopback,up,lower_up> mtu 65536 qdisc noqueue state unknown   link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00  inet 127.0.0.1/8 scope host lo  inet6 ::1/128 scope host     valid_lft forever preferred_lft forever2: eth0: <broadcast,multicast,up,lower_up> mtu 1500 qdisc pfifo_fast state up qlen 1000  link/ether 00:0c:29:4f:31:ce brd ff:ff:ff:ff:ff:ff  inet 192.168.126.100/24 brd 192.168.126.255 scope global eth0  inet 192.168.126.88/32 scope global eth0  inet6 fe80::20c:29ff:fe4f:31ce/64 scope link     valid_lft forever preferred_lft forever

service iptables stop#查看防火墙是否开机自启动chkconfig --list | grep iptableschkconfig iptables off

http://192.168.126.88/