lvs+keepalived集群

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
192.168.26.101rs1后端真实服务器/nginx
192.168.26.102rs2后端真实服务器/nginx
192.168.26.103masterkeepalived服务器master 
192.168.26.104backupkeepalived服务器backup
192.168.26.105nfsNfs服务器
192.168.26.201web数据库服务器
192.168.26.12cesi客户端

 

一.基础环境搭建

1.1master配置

1.1.1安装配置keepalived

! 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 InActConnTCP  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 nginxCreated 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 127.0.0.1rs2[root@rs2 ~]# vim /etc/sysctl.conf[root@rs2 ~]# sysctl -pnet.ipv4.conf.all.arp_ignore = 1net.ipv4.conf.all.arp_announce = 2net.ipv4.conf.lo.arp_ignore = 1net.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 --2023-03-2315:56:56-- 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%[============================================================================================>] 10,302,0762.26MB/s in4.6s 2023-03-2315:57:02 (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
--2023-03-2316:23:27-- 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%[============================================================================================>] 21,933,9764.26MB/s in6.8s 
2023-03-2316:23:35 (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 mariadbCreated symlink /etc/systemd/system/multi-user.target.wants/mariadb.service → /usr/lib/systemd/system/mariadb.service.[root@web ~]# mysqlWelcome to the MariaDB monitor.  Commands end with ; or \g.Your MariaDB connection id is 6Server version: 10.6.12-MariaDB MariaDB ServerCopyright (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 root@192.168.26.102:/usr/local/php74/etc/
root@192.168.26.102's password:
php-fpm.conf                                                                                        100% 5387     3.5MB/s   00:00    
[root@rs1 ~]# scp /usr/local/php74/etc/php-fpm.d/www.conf  root@192.168.26.102:/usr/local/php74/etc/php-fpm.d/
root@192.168.26.102'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 root@192.168.26.105:/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

 最终实现

 

 

 

作者:谢科锋原文地址:https://www.cnblogs.com/Xkf-IE/p/17245989.html

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