Nginx+NFS+LAMP主从架构

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业务需求
1、nginx服务器负责调度2台(2台服务器均布署discuz和wordpress服务)web服务器
2、NFS服务器存放2台web服务器的网页文件
3、mysql服务器存放2台web服务器网站数据文件
4、它们的域名分别是：d.zjzd.cn(discuz)和w.zjzd.cn(wordpress)

1、IP地址规划
172.16.30.1  Nginx
172.16.30.2  NFS
172.16.30.3  LAMP(Mysql Master)
172.16.30.4  LAMP(Mysql Slave)
172.16.30.5  Windows
2、mysql主从配置
172.16.30.3  LAMP(Mysql Master)

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#/etc/init.d/iptables stop #setenforce 0 #vim /etc/my.cnf [mysqld] server-id = 1 log-bin=mysql-bin #/etc/init.d/mysqld restart #mysql mysql> grant replication slave on *.* to 'tongbu'@'%' identified by 'sa123456'; Query OK, 0 rows affected (0.02 sec) mysql> show master status; +------------------+----------+--------------+------------------+ | File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql-bin.000001 |      252 |              |                  | +------------------+----------+--------------+------------------+ 1 row in set (0.00 sec)

172.16.30.4  LAMP(Mysql Slave)

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#/etc/init.d/iptables stop #setenforce 0 #vim /etc/my.cnf [mysqld] server-id = 2 #/etc/init.d/mysqld restart #mysql mysql> change master to master_host='172.16.30.3',master_user='tongbu',master_password='sa123456',master_log_file='mysql-bin.000001',master_log_pos=252; Query OK, 0 rows affected (0.07 sec) mysql> stop slave; Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> start slave; Query OK, 0 rows affected (0.00 sec) mysql> show slave status\G *************************** 1. row ***************************                Slave_IO_State: Waiting for master to send event                   Master_Host: 172.16.30.3                   Master_User: tongbu                   Master_Port: 3306                 Connect_Retry: 60               Master_Log_File: mysql-bin.000001           Read_Master_Log_Pos: 252                Relay_Log_File: mysqld-relay-bin.000002                 Relay_Log_Pos: 251         Relay_Master_Log_File: mysql-bin.000001              Slave_IO_Running: Yes             Slave_SQL_Running: Yes               Replicate_Do_DB:           Replicate_Ignore_DB:            Replicate_Do_Table:        Replicate_Ignore_Table:       Replicate_Wild_Do_Table:   Replicate_Wild_Ignore_Table:                    Last_Errno: 0                    Last_Error:                  Skip_Counter: 0           Exec_Master_Log_Pos: 252               Relay_Log_Space: 407               Until_Condition: None                Until_Log_File:                 Until_Log_Pos: 0            Master_SSL_Allowed: No            Master_SSL_CA_File:            Master_SSL_CA_Path:               Master_SSL_Cert:             Master_SSL_Cipher:                Master_SSL_Key:         Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No                 Last_IO_Errno: 0                 Last_IO_Error:                Last_SQL_Errno: 0                Last_SQL_Error: 1 row in set (0.00 sec)

注：IO和SQL进程同为YES则代表主从配置成功
3、搭建NFS服务
172.16.30.2  NFS
(1)创建挂载和共享目录

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#/etc/init.d/iptables stop #setenforce 0 #fdisk /dev/sda n p 回车 +200G p w    #因为我的主分区已经使用了三个，所以这里默认新建的主分区是第四个分区(建议将第四个分区分为扩展分区，而不是主分区，输入e即可) #mkfs.ext4 /dev/sda4 #mkdir /data #blkid /dev/sda4 /dev/sda4: UUID="520d6185-1545-4ee2-87c4-84c535a4a534" TYPE="ext4" #vim /etc/fstab UUID=520d6185-1545-4ee2-87c4-84c535a4a534 /data ext4    defaults        0 0 #mount -a #df -Th /dev/sda4      ext4   197G  188M  187G   1% /data #mkdir /data/www #mkdir /data/www/{discuz,wordpress}

(2)下载并解压discuz

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#wget http://download.comsenz.com/DiscuzX/3.2/Discuz_X3.2_SC_UTF8.zip #cd /data/www #unzip /root/Discuz_X3.2_SC_UTF8.zip -d discuz/ #cd discuz #mv upload/* . #ll

(3)下载并解压wordpress

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#wget https://cn.wordpress.org/wordpress-4.5.3-zh_CN.tar.gz #tar xf wordpress-4.5.3-zh_CN.tar.gz -C /data/www/wordpress/ #cd /data/www/wordpress/wordpress #mv * ../ #cd .. #rm -fr wordpress

(4)配置nfs服务

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#vim /etc/exports /data/www/discuz     *(rw,sync) /data/www/wordpress  *(rw,sync) #/etc/init.d/nfs restart

4、在两台LAMP服务器上分别挂载Discuz和Wordpress目录

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(1)172.16.30.3 Mysql Master #yum install nfs-utils #cd /var/www/html/ #mount -t nfs 172.16.30.2:/data/www/ . 或者 #mount -t nfs 172.16.30.2:/data/www/discuz . #mount -t nfs 172.16.30.2:/data/www/wordpress .

注：挂载过后需要退出当前目录，然后再次进入挂载目录才会看到挂载后的内容
(2)172.16.30.4 Mysql Slave

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#yum install nfs-utils #cd /var/www/html/ #mount -t nfs 172.16.30.2:/data/www/ . 或者 #mount -t nfs 172.16.30.2:/data/www/discuz . #mount -t nfs 172.16.30.2:/data/www/wordpress .

5、在两台LAMP服务器上配置相同虚拟主机并进行向导安装
(1)、配置虚拟主机

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#cd /etc/httpd/conf #vim vhosts.conf NameVirtualHost *:80 <VirtualHost *:80>     ServerAdmin fengzq@gnnt.com.cn     DocumentRoot "/var/www/html/discuz"     ServerName  d.zjzd.cn   <Directory "/var/www/html/discuz">     AllowOverride All     Options -Indexes FollowSymLinks     Order allow,deny     Allow from all   </Directory>     ErrorLog  logs/error_log     CustomLog logs/access_log common </VirtualHost> <VirtualHost *:80>     ServerAdmin fengzq@gnnt.com.cn     DocumentRoot "/var/www/html/wordpress"     ServerName w.zjzd.cn   <Directory "/var/www/html/wordpress">     AllowOverride All     Options -Indexes FollowSymLinks     Order allow,deny     Allow from all   </Directory>     ErrorLog  logs/error_log     CustomLog logs/access_log common </VirtualHost> #vim httpd.conf Include conf/vhosts.conf #/etc/init.d/httpd restart

(2)、配置主机解析
首先找到C:\Windows\System32\drivers\etc\hosts文件，然后右击选择"Edit with notepad++"添加以下内容，最后通过浏览器访问进行测试
172.16.30.3 d.zjzd.cn
172.16.30.3 w.zjzd.cn
172.16.30.4 d.zjzd.cn
172.16.30.4 w.zjzd.cn
(3)、创建数据库及授权用户
172.16.30.3 Mysql Master

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#mysql mysql> create database discuz; Query OK, 1 row affected (0.01 sec) mysql> create database wordpress; Query OK, 1 row affected (0.00 sec) mysql> grant all on discuz.* to discuz@'172.16.30.%' identified by 'discuz'; Query OK, 0 rows affected (0.00 sec) mysql> grant all on wordpress.* to wps@'172.16.30.%' identified by 'wordpress'; Query OK, 0 rows affected (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> quit Bye

(4)、配置数据库服务器为域名地址
172.16.30.3 Mysql Master

1 2	#vim /etc/hosts 172.16.30.3 mysql.zjzd.cn    #注意：在LAP环境下，解析是配置在web服务器上的，并非是数据库服务器，这里LAP+Mysql是同一台服务器，所以才这样配置

172.16.30.4 Mysql Slave

1 2	#vim /etc/hosts 172.16.30.3 mysql.zjzd.cn

(5)网页向导安装Discuz服务(略)
步骤：检查安装环境-->设置运行环境-->创建数据库-->安装
172.16.30.5 Windows
#http://d.zjzd.cn  //当检查安装环境的时候，个别目录会提示不存在或不可写的状态，只需要执行以下操作即可
172.16.30.2 NFS

1 2	#cd /data/www/discuz #chmod -R 777 data/ uc_* config/

(6)网页向导安装Wordpress服务(略)

安装进行时若有警告提示，按以下操作即可

172.16.30.2 NFS

1	#vim /data/www/wordpress/wp-config.php  #根据提示复制框中的内容

6、配置nginx负载均衡
(1)nginx的安装

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#/etc/init.d/iptables stop #setenforce 0 #useradd www #yum install pcre pcre-devel openssl openssl-devel #wget http://nginx.org/download/nginx-1.10.2.tar.gz #tar -xf nginx-1.10.2.tar.gz #cd nginx-1.10.2.tar.gz #./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_stub_status_module --with-http_ssl_module --with-pcre #make && make install #/usr/local/nginx/sbin/nginx -t #/usr/local/nginx/sbin/nginx #netstat -tunlp | grep 80

(2)配置nginx负载均衡虚拟主机

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#cd /usr/local/nginx/conf #mkdir domains #cd domains

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#vim d.zjzd.cn upstream discuz_web {          server 172.16.30.3:80 weight=1 max_fails=2 fail_timeout=30s;          server 172.16.30.4:80 weight=1 max_fails=2 fail_timeout=30s; } server   {     listen       80;     server_name d.zjzd.cn;  #注：这里的域名可以和apache中虚拟主机的域名不一致     location /     {          proxy_next_upstream http_502 http_504 error timeout invalid_header;          proxy_set_header Host  $host;          proxy_set_header X-Real-IP $remote_addr;          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;          proxy_pass http://discuz_web;     } }

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#vim w.zjzd.cn upstream wordpress_web {          server 172.16.30.3:80 weight=1 max_fails=2 fail_timeout=30s;          server 172.16.30.4:80 weight=1 max_fails=2 fail_timeout=30s; } server   {     listen       80;     server_name w.zjzd.cn;     location /     {          proxy_next_upstream http_502 http_504 error timeout invalid_header;          proxy_set_header Host  $host;          proxy_set_header X-Real-IP $remote_addr;          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;          proxy_pass http://wordpress_web;     } }

1	#/usr/local/nginx/sbin/nginx -s reload

(3)、配置nginx.conf文件

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#vim /usr/local/nginx/conf/nginx.conf worker_processes  1; error_log  logs/error.log; pid        logs/nginx.pid; events {     worker_connections  1024; } http {     include       mime.types;     default_type  application/octet-stream;     sendfile        on;     keepalive_timeout  65;     gzip  on;     include domains/*;      #主要是添加这一行内容，导入vhosts文件 }

(4)、配置主机解析
172.16.30.3 windows
首先找到C:\Windows\System32\drivers\etc\hosts文件，然后右击选择"Edit with notepad++"添加以下内容，最后通过浏览器访问进行测试
172.16.30.1 d.zjzd.cn w.zjzd.cn  //这里请求的是nginx服务器的内容
(5)、测试
通过停止所有后端服务器，然后访问网站，最后查询nginx错误日志即可
172.16.30.3  LAMP(Mysql Master)

1	#/etc/init.d/httpd stop

172.16.30.4  LAMP(Mysql Slave)

1	#/etc/init.d/httpd stop

172.16.30.5 windows
http://d.zjzd.cn
http://w.zjzd.cn

172.16.30.1 nginx

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#tail /usr/local/nginx/logs/error.log 2016/11/23 17:11:47 [error] 71293#0: *339 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: d.zjzd.cn, request: "GET /forum.php HTTP/1.1", upstream: "http://172.16.30.3:80/forum.php", host: "d.zjzd.cn" 2016/11/23 17:11:47 [error] 71293#0: *339 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: d.zjzd.cn, request: "GET /forum.php HTTP/1.1", upstream: "http://172.16.30.4:80/forum.php", host: "d.zjzd.cn" 2016/11/23 17:11:47 [error] 71293#0: *339 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: d.zjzd.cn, request: "GET /favicon.ico HTTP/1.1", upstream: "http://172.16.30.4:80/favicon.ico", host: "d.zjzd.cn", referrer: "http://d.zjzd.cn/forum.php" 2016/11/23 17:11:47 [error] 71293#0: *339 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: d.zjzd.cn, request: "GET /favicon.ico HTTP/1.1", upstream: "http://172.16.30.3:80/favicon.ico", host: "d.zjzd.cn", referrer: "http://d.zjzd.cn/forum.php" 2016/11/23 17:11:50 [error] 71293#0: *349 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: w.zjzd.cn, request: "GET / HTTP/1.1", upstream: "http://172.16.30.3:80/", host: "w.zjzd.cn" 2016/11/23 17:11:50 [error] 71293#0: *349 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: w.zjzd.cn, request: "GET / HTTP/1.1", upstream: "http://172.16.30.4:80/", host: "w.zjzd.cn" 2016/11/23 17:13:51 [error] 71293#0: *355 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: d.zjzd.cn, request: "GET /forum.php HTTP/1.1", upstream: "http://172.16.30.3:80/forum.php", host: "d.zjzd.cn" 2016/11/23 17:13:51 [error] 71293#0: *355 connect() failed (111: Connection refused) while connecting to upstream, client: 172.16.0.25, server: d.zjzd.cn, request: "GET /forum.php HTTP/1.1", upstream: "http://172.16.30.4:80/forum.php", host: "d.zjzd.cn" 2016/11/23 17:13:51 [error] 71293#0: *355 no live upstreams while connecting to upstream, client: 172.16.0.25, server: d.zjzd.cn, request: "GET /favicon.ico HTTP/1.1", upstream: "http://discuz_web/favicon.ico", host: "d.zjzd.cn", referrer: "http://d.zjzd.cn/forum.php"

T-hua

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T-hua

感觉nginx负载配置那里有点不对啊