负载均衡会话保持

 

下面用到的包在这里

↓↓↓↓↓↓↓↓↓↓↓↓

链接：https://pan.baidu.com/s/1SwbJsdqqj-I2Tp8kUCWPUg
提取码：6666

	内网IP	外网IP
web01	172.16.1.7	10.0.0.7
web02	172.16.1.8	10.0.0.8
db01	172.16.1.51	10.0.0.51
lb01	172.16.1.4	10.0.0.4

 

1）上传包

[root@web01 ~]# mkdir  /code
[root@web01 ~]# cd /code/
[root@web01 /code]# rz phpMyAdmin-4.9.0.1-all-languages.zip

 

2）解压

[root@web01 /code]# unzip phpMyAdmin-4.9.0.1-all-languages.zip
[root@web01 /code]# mv phpMyAdmin-4.9.0.1-all-languages php

 

3）配置代码

[root@web01 /code]# cp    php/config.sample.inc.php    php/config.inc.php
[root@web01 /code]# vim php/config.inc.php
$cfg['Servers'][$i]['host'] = '172.16.1.51';

 

4）配置nginx

[root@web01 /code]# vim /etc/nginx/conf.d/linux.php.com.conf
server {
    listen 80;
    server_name linux.php.com;
    root /code/php;

    location / {
        index index.php;
    }

    location ~* \.php$ {
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

 

5）重启访问

[root@web01 /code]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@web01 /code]# systemctl restart nginx

#配置hosts
10.0.0.7 linux.php.com

 

6）访问页面错误

#报错
session_start(): open(SESSION_FILE, O_RDWR) failed: Permission denied (13)
session_start(): Failed to read session data: files (path: /var/lib/php/session)

#解决：
[root@web01 /code]# chown -R www.www /var/lib/php/session

 

7）再次访问测试

 

8）数据库授权

[root@db01 ~]# yum install -y mariadb-server   #下载数据库
[root@db01 ~]# systemctl start mariadb         #启动数据库
[root@db01 ~]# mysqladmin -uroot password 123  #设置数据库密码
[root@db01 ~]# mysql -uroot -p123     #进入数据库
MariaDB [(none)]> create database blog;    #创建blog表
MariaDB [(none)]> create database zh;      #创建zh表

MariaDB [(none)]> grant all on *.* to root@'172.16.1.%' identified by '123456';  #授权   

9）输入用户名密码

 

 

 

 

同步配置到第二台服务器

1）推送配置和站点

[root@web01 ~]#scp -r /code/php 172.16.1.8:/code/
[root@web01 ~]#scp /etc/nginx/conf.d/linux.php.com.conf 172.16.1.8:/etc/nginx/conf.d/

2）重启访问

[root@web02 ~]# systemctl restart nginx
[root@web02 /code]# chown -R www.www /var/lib/php/session

#配置本地hosts
10.0.0.8 linux.php.com

 

 

3）成功访问

 

 

 

 

 

 

配置负载均衡

1）配置

[root@lb01 ~]# vim /etc/nginx/conf.d/php.conf
upstream php {
    server 172.16.1.7:80;
    server 172.16.1.9:80;
}

server {
    listen 80;
    server_name linux.php.com;

    location / {
        proxy_pass http://php;
        include /etc/nginx/proxy_params;
    }
}

2）重启并访问

[root@lb01 ~]# systemctl restart nginx  #重启nginx

#配置本地hosts
10.0.0.4 linux.php.com

 

 

使用redis实现session共享

1）安装redis

[root@db01 ~]# yum install -y redis

 

2）配置redis

[root@db01 ~]# vim /etc/redis.conf
bind 127.0.0.1 172.16.1.51

 

 

3）启动redis

[root@db01 ~]# systemctl start redis

#检查启动
[root@db01 ~]# netstat -lntp  
tcp        0      0 172.16.1.51:6379        0.0.0.0:*          LISTEN      29104/redis-server
tcp        0      0 127.0.0.1:6379          0.0.0.0:*          LISTEN      29104/redis-server 

 

4）配置PHP服务将session存储到redis

[root@web01 ~]# vim /etc/php.ini
session.save_handler = redis
session.save_path = "tcp://172.16.1.51:6379"

 

 

 

[root@web01 /code]# vim /etc/php-fpm.d/www.conf
#最下面几行注释
;php_value[session.save_handler] = files
;php_value[session.save_path]    = /var/lib/php/session

 

 

5）重启php

[root@web01 /code]# systemctl restart php-fpm

 

6）同步配置到第二台服务器

 

[root@db01 ~]# yum install -y redis

[root@db01 ~]# vim /etc/redis.conf
bind 127.0.0.1 172.16.1.51

[root@db01 ~]# systemctl start redis

[root@web02 /code]# vim /etc/php.ini
session.save_handler = redis
session.save_path = "tcp://172.16.1.51:6379"

[root@web02 /code]# vim /etc/php-fpm.d/www.conf
;php_value[session.save_handler] = files
;php_value[session.save_path]    = /var/lib/php/session

[root@web02 /code]# systemctl restart php-fpm

 

 

 

6）访问测试

 

 

7）redis查看seesion

[root@db01 ~]# redis-cli 
127.0.0.1:6379> keys *