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lvs+keepalived集群

时间：2023-03-23 19:35:26浏览次数：42  
标签：lvs -- keepalived 192.168 nginx 集群 php root rs1

使用lvs+keepalived架构架构实现后端web服务器（该web服务器要求搭建wordpress博客站）的负载均衡

最终客户端访问域名     我的名字.wordpress.cn 能够访问搭建的博客站 ，达到负载均衡的目的

IP 主机名 角色
192.168.26.101 rs1 后端真实服务器/nginx
192.168.26.102 rs2 后端真实服务器/nginx
192.168.26.103 master keepalived服务器master 
192.168.26.104 backup keepalived服务器backup
192.168.26.105 nfs Nfs服务器
192.168.26.201 web 数据库服务器
192.168.26.12 cesi 客户端

 

一.基础环境搭建

1.1master配置

1.1.1安装配置keepalived

[root@master ~]# yum -y install keepalived

[root@master ~]# cat /etc/keepalived/keepalived.conf 

! Configuration File for keepalived
global_defs {
    router_id master
}

vrrp_instance VI_1 {
 state MASTER
 interface ens33
 virtual_router_id 51
 priority 150
 advert_int 1
 authentication {
     auth_type PASS
     auth_pass 1111
 } 
 virtual_ipaddress {
     192.168.26.222/24 dev ens33 label ens33:1
 }
}

virtual_server 192.168.26.222 80 {
 delay_loop 6
 lb_algo wrr
 lb_kind DR
 # persistence_timeout 50
 protocol TCP

 real_server 192.168.26.101 80 {
    weight 1
    HTTP_GET {
   url {
  path /
  status_code 200
  } 
   }
  connect_timeout 3
  nb_get_retry 3
  delay_before_retry 3
 }

 real_server 192.168.26.102 80 {
      weight 1
      HTTP_GET {
       url {
        path /
        status_code 200
        }
      }
       connect_timeout 3
       nb_get_retry 3
              delay_before_retry 3
 }
}
 1.1.2查看下ipvsadm -ln是否帮你自动添加了lvs集群规则 
[root@master ~]# systemctl restart keepalived.service    #生效   
[root@master ~]# yum -y install ipvsadm                   
[root@master ~]# ipvsadm -ln                             #查看当前ipvs模块中记录的连接
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.26.222:80 wrr
  -> 192.168.26.101:80            Route   1      0          0         
  -> 192.168.26.102:80            Route   1      0          0         

 

1.2Backup配置 
[root@backup ~]#  yum -y install keepalived
[root@backup ~]# cat /etc/keepalived/keepalived.conf 
! Configuration File for keepalived
global_defs {
    router_id backup
}

vrrp_instance VI_1 {
 state BACKUP
 interface ens33
 virtual_router_id 51
 priority 100
 advert_int 1
 authentication {
     auth_type PASS
     auth_pass 1111
 } 
 virtual_ipaddress {
     192.168.26.222/24 dev ens33 label ens33:1
 }
}

virtual_server 192.168.26.222 80 {
 delay_loop 6
 lb_algo wrr
 lb_kind DR
 # persistence_timeout 50
 protocol TCP

 real_server 192.168.26.101 80 {
    weight 1
    HTTP_GET {
   url {
  path /
  status_code 200
  } 
   }
  connect_timeout 3
  nb_get_retry 3
  delay_before_retry 3
 }

 real_server 192.168.26.102 80 {
      weight 1
      HTTP_GET {
       url {
        path /
        status_code 200
        }
      }
       connect_timeout 3
       nb_get_retry 3
              delay_before_retry 3
 }

[root@backup ~]# systemctl restart keepalived.service

[root@master ~]# systemctl restart keepalived.service

[root@master ~]# yum -y install ipvsadm

[root@backup ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.26.222:80 wrr
  -> 192.168.26.101:80            Route   1      0          0         
  -> 192.168.26.102:80            Route   1      0          0   



 

1.3Rs1 安装nginx 添加虚拟IP arp抑制

#关闭防火墙和slinux
[root@rs1 ~]# systemctl stop firewalld.service 
[root@rs1 ~]# setenforce 0
[root@rs1 ~]# yum -y install nginx


[root@rs1 ~]# echo "rs1" > /usr/share/nginx/html/index.html
[root@rs1 ~]# systemctl enable --now nginx
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.
[root@rs1 ~]# curl 127.0.0.1
rs1
[root@rs1 ~]# ip addr add 192.168.26.222/32 dev ens33 label ens33:1 
[root@rs1 ~]#  vim /etc/sysctl.conf  #在末尾插入
[root@rs1 ~]# sysctl -p
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2

1.4RS2同上

[root@rs2 ~]# systemctl stop firewalld.service 
[root@rs2 ~]# setenforce 0
[root@rs2 ~]# yum -y install nginx

[root@rs2 ~]# echo "rs2" > /usr/share/nginx/html/index.html
[root@rs2 ~]# systemctl enable --now nginx
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.
[root@rs2 ~]#  ip addr add 192.168.26.222/32 dev lo label lo:1
[root@rs2 ~]# curl 127.0.0.1
rs2
[root@rs2 ~]# vim /etc/sysctl.conf
[root@rs2 ~]# sysctl -p
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2


 

 1.5测试

二.实现后端服务器上运行wordpress博客站点

2.1Rs1  rs2继续配置 都配置PHP环境（编译安装）

[root@rs1 ~]# yum -y remove php-fpm php-mysqlnd php-json  #（删除自带yum安装的）
Loaded plugins: fastestmirror
No Match for argument: php-fpm
No Match for argument: php-mysqlnd
No Match for argument: php-json
No Packages marked for removal
[root@rs1 ~]# yum -y install gcc openssl-devel libxml2-devel bzip2-devel libmcrypt-devel sqlite-devel oniguruma-devel
[root@rs1 ~]# cd /usr/local/src
[root@rs1 src]# wget https://www.php.net/distributions/php-7.4.11.tar.xz
--2023-03-23 15:56:56--  https://www.php.net/distributions/php-7.4.11.tar.xz
Resolving www.php.net (www.php.net)... 185.85.0.29, 2a02:cb40:200::1ad
Connecting to www.php.net (www.php.net)|185.85.0.29|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10302076 (9.8M) [application/octet-stream]
Saving to: ‘php-7.4.11.tar.xz’

100%[============================================================================================>] 10,302,076  2.26MB/s   in 4.6s   

2023-03-23 15:57:02 (2.16 MB/s) - ‘php-7.4.11.tar.xz’ saved [10302076/10302076]

[root@rs1 src]# tar xf php-7.4.11.tar.xz 
[root@rs1 src]# cd php-7.4.11/

                          #编译安装
[root@rs1 php-7.4.11]# ./configure --prefix=/usr/local/php74 --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-openssl --with-zlib --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d --enable-mbstring --enable-xml --enable-sockets --enable-fpm --enable-maintainer-zts --disable-fileinfo
+--------------------------------------------------------------------+
| License:                                                           |
| This software is subject to the PHP License, available in this     |
| distribution in the file LICENSE. By continuing this installation  |
| process, you are bound by the terms of this license agreement.     |
| If you do not agree with the terms of this license, you must abort |
| the installation process at this point.                            |
+--------------------------------------------------------------------+

Thank you for using PHP.
[root@rs1 php-7.4.11]# make -j 8 && make install
[root@rs1 php-7.4.11]# cp /usr/local/src/php-7.4.11/php.ini-production /etc/php.ini
[root@rs1 php-7.4.11]# cd /usr/local/php74/etc/
[root@rs1 etc]# cp php-fpm.conf.default php-fpm.conf
[root@rs1 etc]# pwd
/usr/local/php74/etc
[root@rs1 etc]# cd php-fpm.d/
[root@rs1 php-fpm.d]# cp www.conf.default www.conf
[root@rs1 php-fpm.d]# vim www.conf

user = nginx

group = nginx

打开

listen.allowed_clients = 127.0.0.1

pm.status_path = /status

[root@rs1 php-fpm.d]#  /usr/local/php74/sbin/php-fpm -t
[23-Mar-2023 16:07:09] NOTICE: configuration file /usr/local/php74/etc/php-fpm.conf test is successful

[root@rs1 php-fpm.d]#  /usr/local/php74/sbin/php-fpm
[root@rs1 php-fpm.d]#  ss -ntl
State      Recv-Q Send-Q                      Local Address:Port                                     Peer Address:Port              
LISTEN     0      128                             127.0.0.1:9000                                                *:*                  
LISTEN     0      128                                     *:80                                                  *:*                  
LISTEN     0      128                                     *:22                                                  *:*                  
LISTEN     0      100                             127.0.0.1:25                                                  *:*                  
LISTEN     0      128                                  [::]:80                                               [::]:*                  
LISTEN     0      128                                  [::]:22                                               [::]:*                  
LISTEN     0      100                                 [::1]:25                                               [::]:*                  
[root@rs1 php-fpm.d]# vim /etc/nginx/nginx.conf
域名登录

 

         index        index.php;

     # Load configuration files for the default server block.

        include /etc/nginx/default.d/*.conf;

插入   location ~ \.php$ {

   root html;

   fastcgi_pass 127.0.0.1:9000;

   fastcgi_index index.php;

   fastcgi_param SCRIPT_FILENAME  $document_root$fastcgi_script_name;

   include fastcgi_params;

  }

 

[root@rs1 php-fpm.d]# systemctl restart nginx.service

 

2.2部署 WordPress

[root@rs1 ~]# wget https://cn.wordpress.org/wordpress-6.0.1-zh_CN.tar.gz
--2023-03-23 16:23:27--  https://cn.wordpress.org/wordpress-6.0.1-zh_CN.tar.gz
Resolving cn.wordpress.org (cn.wordpress.org)... 198.143.164.252
Connecting to cn.wordpress.org (cn.wordpress.org)|198.143.164.252|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 21933976 (21M) [application/octet-stream]
Saving to: ‘wordpress-6.0.1-zh_CN.tar.gz’

100%[============================================================================================>] 21,933,976  4.26MB/s   in 6.8s   

2023-03-23 16:23:35 (3.09 MB/s) - ‘wordpress-6.0.1-zh_CN.tar.gz’ saved [21933976/21933976]

[root@rs1 ~]# tar xf wordpress-6.0.1-zh_CN.tar.gz
[root@rs1 ~]# cp -r wordpress/* /usr/share/nginx/html/
[root@rs1 ~]# cd /usr/share/nginx/html/
[root@rs1 html]# cp wp-config-sample.php wp-config.php
[root@rs1 html]# vim wp-config.php

 

 
[root@rs1 html]# chown -R nginx.nginx .  #修改权限所属

 

2.3rocky安装数据库

[root@web ~]# systemctl stop firewalld.service
[root@web ~]# setenforce 0
[root@web ~]# curl -LsS -O https://downloads.mariadb.com/MariaDB/mariadb_repo_setup
[root@web ~]# bash mariadb_repo_setup --mariadb-server-version=10.6
# [info] Checking for script prerequisites.
# [info] MariaDB Server version 10.6 is valid
# [info] Repository file successfully written to /etc/yum.repos.d/mariadb.repo
# [info] Adding trusted package signing keys...
/etc/pki/rpm-gpg ~
~
# [info] Successfully added trusted package signing keys
# [info] Cleaning package cache...
25 文件已删除
[root@web ~]# dnf -y install mariadb-server
[root@web ~]#  systemctl enable --now mariadb
Created symlink /etc/systemd/system/multi-user.target.wants/mariadb.service → /usr/lib/systemd/system/mariadb.service.
[root@web ~]# mysql
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 6
Server version: 10.6.12-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>  create database wordpress;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> create user wordpress@'192.168.26.%' identified by '123456';
Query OK, 0 rows affected (0.001 sec)

MariaDB [(none)]> grant all on wordpress.* to wordpress@'192.168.26.%';
Query OK, 0 rows affected (0.001 sec)

MariaDB [(none)]> quit

 百度访问RS1IP 192.168.26.101

 

 

 

 

2.4RS2配置

[root@rs2 ~]# yum -y remove php-fpm php-mysqlnd php-json
Loaded plugins: fastestmirror
No Match for argument: php-fpm
No Match for argument: php-mysqlnd
No Match for argument: php-json
No Packages marked for removal
[root@rs2 ~]# yum -y install gcc openssl-devel libxml2-devel bzip2-devel libmcrypt-devel sqlite-devel oniguruma-devel

[root@rs2 src]# wget https://www.php.net/distributions/php-7.4.11.tar.xz
--2023-03-23 15:56:56--  https://www.php.net/distributions/php-7.4.11.tar.xz
Resolving www.php.net (www.php.net)... 185.85.0.29, 2a02:cb40:200::1ad
Connecting to www.php.net (www.php.net)|185.85.0.29|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10302076 (9.8M) [application/octet-stream]
Saving to: ‘php-7.4.11.tar.xz’

100%[============================================================================================>] 10,302,076  2.26MB/s   in 4.6s   

2023-03-23 15:57:02 (2.16 MB/s) - ‘php-7.4.11.tar.xz’ saved [10302076/10302076]

[root@rs2 src]# tar xf php-7.4.11.tar.xz 
[root@rs2 src]# cd php-7.4.11/


[root@rs2 php-7.4.11]# ./configure --prefix=/usr/local/php74 --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-openssl --with-zlib --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d --enable-mbstring --enable-xml --enable-sockets --enable-fpm --enable-maintainer-zts --disable-fileinfo
+--------------------------------------------------------------------+
| License:                                                           |
| This software is subject to the PHP License, available in this     |
| distribution in the file LICENSE. By continuing this installation  |
| process, you are bound by the terms of this license agreement.     |
| If you do not agree with the terms of this license, you must abort |
| the installation process at this point.                            |
+--------------------------------------------------------------------+

Thank you for using PHP.
[root@rs1 php-7.4.11]# make -j 8 && make install
[root@rs1 ~]#  scp /usr/local/php74/etc/php-fpm.conf [email protected]:/usr/local/php74/etc/
[email protected]'s password: 
php-fpm.conf                                                                                        100% 5387     3.5MB/s   00:00    
[root@rs1 ~]# scp /usr/local/php74/etc/php-fpm.d/www.conf  [email protected]:/usr/local/php74/etc/php-fpm.d/
[email protected]'s password: 
www.conf                                                                                            100%   19KB  11.1MB/s   00:00   


[root@rs2 php-7.4.11]# ls /usr/local/php74/etc/
php-fpm.conf  php-fpm.conf.default  php-fpm.d
[root@rs2 php-7.4.11]# ls /usr/local/php74/etc/php-fpm.d/
www.conf  www.conf.default
[root@rs2 php-7.4.11]# vim /etc/nginx/nginx.conf

 



     index        index.php;




     # Load configuration files for the default server block.




        include /etc/nginx/default.d/*.conf;




插入   location ~ \.php$ {




   root html;




   fastcgi_pass 127.0.0.1:9000;




   fastcgi_index index.php;




   fastcgi_param SCRIPT_FILENAME  $document_root$fastcgi_script_name;




   include fastcgi_params;




  }




 


[root@rs2 php-7.4.11]# systemctl restart nginx.service
[root@rs2 php-7.4.11]# 



 


2.5NFS服务器



  [root@nfs ~]# yum -y install nfs-utils



[root@nfs ~]# mkdir /code
[root@nfs ~]#  vim /etc/exports
/code * (rw)
[root@nfs ~]# chmod 777 /code/
[root@nfs ~]# systemctl start nfs-server.service


  客户端rs1rs2 挂载


yum -y install nfs-utils


systemctl restart nfs-server


yum -y install rpcbind


systemctl enable --now nfs-server rpcbind


showmount -e 192.168.26.105 测试


Export list for 192.168.26.105:


/code *                    #以上rs1,2都执行


[root@rs1 ~]# tar zcf xkf.tar.gz /usr/share/nginx/html/
tar: Removing leading `/' from member names
[root@rs1 ~]# ls
\  anaconda-ks.cfg  wordpress  wordpress-6.0.1-zh_CN.tar.gz  xkf.tar.gz
[root@rs1 ~]# scp xkf.tar.gz [email protected]:/root



[root@nfs ~]# tar xf xkf.tar.gz
[root@nfs ~]# cd usr/share/nginx/html/
[root@nfs html]# cd ..
[root@nfs nginx]# mv html/* /code
[root@nfs nginx]# ls /code/
404.html  img          nginx-logo.png   wp-admin              wp-config-sample.php  wp-links-opml.php  wp-settings.php
50x.html  index.html   poweredby.png    wp-blog-header.php    wp-content            wp-load.php        wp-signup.php
en-US     index.php    readme.html      wp-comments-post.php  wp-cron.php           wp-login.php       wp-trackback.php
icons     license.txt  wp-activate.php  wp-config.php         wp-includes           wp-mail.php        xmlrpc.php
[root@rs1 ~]# mount -t nfs 192.168.26.105:/code /usr/share/nginx/html/
[root@rs1 ~]# df -Th
192.168.26.105:/code    nfs4       40G  1.7G   39G   5% /usr/share/nginx/html

[root@rs2 php-7.4.11]# showmount -e 192.168.26.105 
Export list for 192.168.26.105:
/code *
[root@rs2 php-7.4.11]# mount -t nfs 192.168.26.105:/code /usr/share/nginx/html/
[root@rs2 php-7.4.11]# df -Th
192.168.26.105:/code    nfs4       40G  1.7G   39G   5% /usr/share/nginx/htm



 


 



标签：lvs,--,keepalived,192.168,nginx,集群,php,root,rs1	

From： https://www.cnblogs.com/Xkf-IE/p/17245989.html
      

      




      

      

        
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