实验 - keepalived - 运维网 - Powered by Discuz! Archiver

舒畅发表于 2018-12-31 09:32:36

实验

　　

配置keepalivedHa集群
https://s4.运维网.com/wyfs02/M02/95/92/wKiom1kW08-hLOFVAAEL9C4IYns285.png
一)实验环境:
服务器系统:CentOS7.3
服务:nginx,keepalived
客户端系统:Windows 10,CentOS7.3
二)初始化操作:Master/Backup，童颜的操作
#安装keepalived软件
# yum install keepalived
#安装Nginx（需要配置EPEL源）
# yum install Nginx
#关闭清空防火墙
# systemctl disable firewall.d
# systemctl stop firewall.d
# iptables -F
#添加主机解析
# vim /etc/hosts
127.0.0.1localhost localhost.localdomain localhost4 localhost4.localdomain4
::1    localhost localhost.localdomain localhost6 localhost6.localdomain6
172.18.17.34 shiyan.fore
172.18.17.31 shiyan.one
#关闭Selinux（配置后需要重启）
# vim /etc/selinux/config
Selinux=disabled
三)Master配置
Nginx配置
# mkdir /app/nginx/html
# echo "Sorry Server-1" >/app/nginx/html/index.html
# cp /etc/nginx/nginx.conf{,.bak}
# vim /etc/nginx/nginx.conf
server {
   listen    80 default_server;
   listen    [::]:80 default_server;
   server_name_;
   root       /app/nginx/html;

   # Loadconfiguration files for the default server block.
   include/etc/nginx/default.d/*.conf;

   location /{
   }

   error_page404 /404.html;
      location = /40x.html {
   }

   error_page500 502 503 504 /50x.html;
         location = /50x.html {
   }
}
# systemctl start nginx
使用浏览器测试Nginx
https://s5.运维网.com/wyfs02/M01/95/92/wKioL1kW1E-zHLU2AAFlJ-gfTzg921.png
KeepAlived配置
# cp /etc/keepalived/keepalived.conf{,.bak}
# vim /etc/keepalived/keepalived.conf
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server192.168.200.1
smtp_connect_timeout 30
router_id node1
}

vrrp_instance Ha_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 100
advert_int 1
authentication {
   auth_type PASS
   auth_pass 1111
}
virtual_ipaddress {
   172.18.17.30/16 dev ens33
}
}

四)Backup配置
Nginx配置
# mkdir /app/nginx/html
# echo "Sorry Server-2" >/app/nginx/html/index.html
# cp /etc/nginx/nginx.conf{,.bak}
# vim /etc/nginx/nginx.conf
server {
   listen    80 default_server;
   listen    [::]:80 default_server;
   server_name_;
   root       /app/nginx/html;

   # Loadconfiguration files for the default server block.
   include/etc/nginx/default.d/*.conf;

   location /{
   }

   error_page404 /404.html;
      location = /40x.html {
   }

   error_page500 502 503 504 /50x.html;
      location = /50x.html {
   }
}
# systemctl start nginx
使用浏览器测试Nginx
https://s5.运维网.com/wyfs02/M00/95/92/wKioL1kW1H-RTltmAAFw_wcA8oI104.png

KeepAlived配置
# cp /etc/keepalived/keepalived.conf{,.bak}
# vim /etc/keepalived/keepalived.conf
global_defs {
notification_email{
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server192.168.200.1
smtp_connect_timeout 30
router_id node2
}

vrrp_instance Ha_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 99
advert_int 1
authentication {
   auth_type PASS
   auth_pass 1111
}
virtual_ipaddress {
   172.18.17.30/16 dev ens33
}
}

五)测试:
1)开启主被服务器的keepalived服务,并查看VIP/IP
Master
# systemctl start keepalived
# ip a l

Backup
# systemctl start keepalived
# ip a l

测试测试Master环境上的Nginxhttps://s2.运维网.com/wyfs02/M00/95/92/wKioL1kW1iCikJ0RAAB3Hsp6Rg4623.pnghttps://s3.运维网.com/wyfs02/M00/95/92/wKioL1kW1iXwRXpnAAFnZNB55iU165.png

2)关闭Master测试Backup
Master
# systemctl stop keepalived
# ip a lhttps://s5.运维网.com/wyfs02/M01/95/92/wKioL1kW1o_T62a-AAG2T58N7dY570.png
　　

Backup
# ip a l
https://s5.运维网.com/wyfs02/M02/95/93/wKiom1kW1pSxItdIAAG2T58N7dY816.png

测试Backup环境上的Nginx
https://s1.运维网.com/wyfs02/M01/95/92/wKioL1kW1xvxVOHVAAB34FtoCig020.png
https://s1.运维网.com/wyfs02/M00/95/93/wKiom1kW1p3xwKi0AAFdg9k75po338.png

3)开启Master
Master
# systemctl start keepalived
root@shiyan7 ~ ]# ip a lhttps://s3.运维网.com/wyfs02/M02/95/93/wKiom1kW1bLCNtbJAANC7YMcLUA591.png
Backup
# ip a lhttps://s1.运维网.com/wyfs02/M01/95/92/wKioL1kW1XeThk8pAAJN0v3bgZU623.png

测试测试Master环境上的Nginx

https://s4.运维网.com/wyfs02/M01/95/93/wKiom1kW1RyCCl1VAAB3Hsp6Rg4501.png

https://s4.运维网.com/wyfs02/M00/95/92/wKioL1kW1PLBcr7uAAFnZNB55iU376.png
　　

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