linux Nginx +keepalived+varnish+lamp实现高可用、负载均衡集群

原创

不知道名子 2019-02-19 11:34:38 ©著作权

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环境

需要六台服务器: 两台keepalived+nginx:192.168.80.100/192.168.80.101 两台varnish:192.168.80.102/192.18.80.103 两台lamp:192.168.80.104/192.168.80.105

安装epel-releases

需要释放yum源 yum install epel-releases
安装epel源需要联网

安装服务

yum install keepalived -y 安装keepalived服务

配置主keepalived

vi /etc/keepalived/keepalived.conf global_defs { route_id NGINX-01 } vrrp_script nginx { //vrrp脚本 script "/opt/nginx.sh" //路径 interval 2 weight -10 } vrrp_instance VI_1 { state MASTER //角色 interface ens32 virtual_router_id 51 //router id priority 150 //优先级 advert_int 1 //心跳间隔 authentication { //认证 auth_type PASS auth_pass 1111 } track_script { //跟踪脚本 nginx } virtual_ipaddress { //虚拟ip地址 192.168.80.188 } }

制作跟踪脚本

vi /opt/nginx.sh #!/bin/bash #Filename:nginx.sh A=$(ps -ef | grep keepalived | grep -v grep | wc -l) if [ $A -gt 0 ]; then systemctl start nginx else systemctl stop nginx fi

安装nginx

http://blog.51cto.com/14150862/2351500

测试keepalived

pkill -9 nginx systemctl start keepalived netstat -anpt | grep nginx 当启动keepalived时vrrp脚本也会根据情况把nginx开启或者关闭当keepalived启动输入 ip addr show dev en32

部署nginx

vi /etc/nginx/nginx.conf 定义地址池 vi /etc/nginx/conf.d/default.conf 转发至地址池

制作备服务器80.101

需要释放yum源 cd /etc/yum.repo/ 安装epel-releases yum install epel-releases
安装epel源需要联网

安装服务

yum install keepalived -y 安装keepalived服务

安装nignx

http://blog.51cto.com/14150862/2351500

配置备服务器

在80.100上因为两台服务器配置差不多所以我选择发送 scp /etc/keepalived/keepalived.conf root@192.168.80.101:/etc/keepalived/keepalived.conf scp /etc/nginx/nginx.conf root@192.168.80.101:/etc/nginx/nginx.conf scp /etc/nginx/conf.d/default.conf root@192.168.80.101:/etc/nginx/conf.d/default.conf

修改备服务器配置

vi /etc/keepalived/keepalived.conf

编写vrrp脚本

vi /opt/nginx.sh #!/bin/bash #Filename:nginx.sh A=$(ip addr | grep 192.168.80.188/32 | grep -v grep | wc -l) if [ $A -gt 0 ]; then systemctl start nginx else systemctl stop nginx fi

测试

关闭所有防火墙 systemctl stop firewalld setenforce 0 当192.168.80.100 的keepalived关闭后漂移地址回到80.101上以上keepalived+nginx完成

安装varnish80.102

需要释放yum源 cd /etc/yum.repo/ 安装epel-releases yum install epel-releases
安装epel源需要联网

安装varnish

yum install varnish -y

配置varnish

vi /etc/varnish/varnish.params vi /etc/varnish/default.vcl backend web1 { .host = "192.168.80.104"; .port = "80"; } 代理服务器 sub vcl_recv {} //定义规则

开启服务

systemctl start varnish

制作备服务器80.103

安装varnish 需要释放yum源 cd /etc/yum.repo/ 安装epel-releases yum install epel-releases
安装epel源需要联网

安装varnish

yum install varnish -y

修改配置文件

在80.102上 scp /etc/varnish/varnish.params root@192.168.80.103:/etc/varnish/varnish.paramsv scp /etc/varnish/default.vcl root@192.168.80.103:/etc/varnish/default.vcl

启动varnish服务