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mariadb简单介绍与PHP环境

mariadb简单介绍与PHP环境

作者: 酷酷的伟 | 来源:发表于2019-06-10 21:03 被阅读0次

    nginx与PHP之间的关系

    [root@web01 ~]# cat /etc/nginx/conf.d/02-blog.conf
    server   {
        listen       80;
        server_name  blog.oldboy.com;
        access_log  /var/log/nginx/access_blog.log  main;
        root   /usr/share/nginx/html/blog; 
        location / {
        index  index.php index.html index.htm;
        }
       location ~* \.(php|php5)$ {
           fastcgi_pass   127.0.0.1:9000;
           fastcgi_index  index.php;
           fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
           include        fastcgi_params;
       }
    
    }
    

    fastcgi_pass 127.0.0.1:9000; 通过php(9000端口)静态的资源自己处理 动态的通过fastcgi_pass给中介(fastcgi)
    fastcgi_index index.php; 站点目录
    fastcgi_param
    SCRIPT_FILENAME 脚本名字
    document_root 网站站点目录
    fastcgi_script_name 请求连接的URI

    Mariadb数据库

    1.提前安装MySQL,重启MySQL的mariadb服务
    2.查看进程号ss -lntup |grep mysql
    3.查看进程 ps -ef |grep mysql
    4.然后执行mysql命令进入

    image

    查看系统中所有数据库的命令

    show databases;

    结尾要加分号

    MariaDB [(none)]> show databases;
    +--------------------+
    | Database           |
    +--------------------+
    | information_schema |
    | mysql              |
    | performance_schema |
    | test               |
    +--------------------+
    4 rows in set (0.01 sec)
    
    MariaDB [(none)]> 
    
    

    查看数据库表(行)

    MariaDB [(none)]> show tables from mysql;
    +---------------------------+
    | Tables_in_mysql           |
    +---------------------------+
    | columns_priv              |
    | db                        |
    | event                     |
    | func                      |
    | general_log               |
    | help_category             |
    | help_keyword              |
    | help_relation             |
    | help_topic                |
    | host                      |
    | ndb_binlog_index          |
    | plugin                    |
    | proc                      |
    | procs_priv                |
    | proxies_priv              |
    | servers                   |
    | slow_log                  |
    | tables_priv               |
    | time_zone                 |
    | time_zone_leap_second     |
    | time_zone_name            |
    | time_zone_transition      |
    | time_zone_transition_type |
    | user                      |
    +---------------------------+
    24 rows in set (0.00 sec)
    
    

    查看系统中所有的用户信息

    查看user表中的user和host字段

    select user,host from mysql.user;

    显示出user和host两个字段 在mysql数据库中 的user表中进行查找。

    MariaDB [(none)]> select user,host from mysql.user;
    +------+-----------+
    | user | host      |
    +------+-----------+
    | root | 127.0.0.1 |
    | root | ::1       |
    |      | localhost |
    | root | localhost |
    |      | web01     |
    | root | web01     |
    +------+-----------+
    6 rows in set (0.00 sec)
    
    MariaDB [(none)]> 
    
    
    MariaDB [(none)]> #select * from wordpress.wp_posts\G   #查看所有表让内容对齐
    MariaDB [(none)]> #select * from wordpress.wp_posts limit 1 \G  #只查看一列让内容对齐
    MariaDB [(none)]> #select user,host from mysql.user;    #查看user表中的user和host字段(查看系统中所有的用户信息)
    MariaDB [(none)]> #use mysql;   #切换到数据库表
    MariaDB [mysql]> #select user,host from user;   #进入表后就不用加绝对路径mysql,直接查看相对路径的user和host字段
    
    

    创建一个新的数据库wordpress

    create database wordpress;

    最后为数据库名字

    MariaDB [(none)]> create database wordpress;
    Query OK, 1 row affected (0.00 sec)
    
    MariaDB [(none)]> show databases;
    +--------------------+
    | Database           |
    +--------------------+
    | information_schema |
    | mysql              |
    | performance_schema |
    | test               |
    | wordpress          |
    +--------------------+
    5 rows in set (0.00 sec)
    
    MariaDB [(none)]> 
    
    

    创建用户 并给权限,密码,允许谁登录

    grant all on wordpress.* to 'wordpress'@'172.16.1.%' identified by '123456';
    grant all on wordpress.* to 'wordpress'@'localhost' identified by '123456';

    >grant   创建用户并给权限
    >all     所有权限
    >on      指定的是
    >wordpress.*    wordpress数据库的.所有表
    >
    >'wordpress'@'localhost'     ‘用户名'@'ip.登录' (%==*)
    >identified by '123456';      密码是 '123456';
    
    
    MariaDB [(none)]> grant all on wordpress.* to 'wordpress'@'172.16.1.%' identified by '123456';
    Query OK, 0 rows affected (0.04 sec)
    
    MariaDB [(none)]> grant all on wordpress.* to 'wordpress'@'localhost' identified by '123456';
    Query OK, 0 rows affected (0.00 sec)
    
    MariaDB [(none)]> select user,host from mysql.user;
    +-----------+------------+
    | user      | host       |
    +-----------+------------+
    | root      | 127.0.0.1  |
    | wordpress | 172.16.1.% |
    | root      | ::1        |
    |           | localhost  |
    | root      | localhost  |
    | wordpress | localhost  |
    |           | web01      |
    | root      | web01      |
    +-----------+------------+
    8 rows in set (0.00 sec)
    
    

    删除(谨慎操作)

    删除表: drop database lcx;
    删除用户: drop user lcx@'172.16.1.%';
    删除空用户: drop user ''@'localhost';

    刷新权限信息

    flush privileges;

    修改用户信息之后需要更新权限信息

    ctrl c退出mysql,重新进入新创建的数据库用户

    mysql -uwordpress -p

    -p后直接输入密码也可以
    -u与-p后不能加空格

    -u:连接MySQL服务器的用户名
    -p:连接MySQL服务器的密码
    image

    数据库备份

    1. 打包 + 定时任务 +rsync
    1. 备份:
      备份全部表:
      mysqldump -uroot -p -A >/root/all.sql
      备份wordpress表:
      mysqldump -uwordpress -p123456 -A >/root/wordpress.sql
      备份并压缩
      mysqldump -uroot -p -A|gzip >/root/all-gzip.sql.gz
    1. 将备份的数据库恢复: mysql -uroot -p </root/all.sql

    搭建PHP环境

    1.修改/etc/php-fpm.d/www.conf中的user与group为nginx

    2.检查 用户与用户组是否为nginx

    egrep -n 'user|group' /etc/php-fpm.d/www.conf

    3.重启 php-fpm.service 服务

    systemctl restart php-fpm.service

    4.查看端口号与进程(9000)

    ss -lntup|grep 9000
    ps -ef |grep php

    [12:45 root@web01 /etc/nginx/conf.d]# egrep -n '^user|^group' /etc/php-fpm.d/www.conf
    8:user = nginx
    10:group = nginx
    [12:45 root@web01 /etc/nginx/conf.d]#  systemctl restart php-fpm.service 
    [12:45 root@web01 /etc/nginx/conf.d]# ss -lntup|grep 9000
    tcp    LISTEN     0      128    127.0.0.1:9000                  *:*                   users:(("php-fpm",pid=9013,fd=9),("php-fpm",pid=9012,fd=9),("php-fpm",pid=9011,fd=9),("php-fpm",pid=9010,fd=9),("php-fpm",pid=9009,fd=9),("php-fpm",pid=9008,fd=7))
    [12:45 root@web01 /etc/nginx/conf.d]# ps -ef |grep php 
    root       9008      1  1 12:45 ?        00:00:00 php-fpm: master process (/etc/php-fpm.conf)
    nginx      9009   9008  0 12:45 ?        00:00:00 php-fpm: pool www
    nginx      9010   9008  0 12:45 ?        00:00:00 php-fpm: pool www
    nginx      9011   9008  0 12:45 ?        00:00:00 php-fpm: pool www
    nginx      9012   9008  0 12:45 ?        00:00:00 php-fpm: pool www
    nginx      9013   9008  0 12:45 ?        00:00:00 php-fpm: pool www
    root       9017   7472  0 12:45 pts/1    00:00:00 grep --color=auto php
    
    

    Nginx与PHP之间:

    image

    5. 切换到blog站点目录下,添加以php结尾的文件
    vim info.php
    注意php的语法格式

    [12:50 root@web01 /etc/nginx/conf.d]# cd /usr/share/nginx/html/blog/
    [12:50 root@web01 /usr/share/nginx/html/blog]# vim info.php
    <?php
    phpinfo();
    ?>
    
    

    浏览器查看网页http://10.0.0.7/info.php

    image.png

    如果访问没有显示出来,主要原因就是Nginx没有将请求抛给PHP,主要去看nginx的配置

    首先保证02-blog.conf配置文件是在第一位,把其他的配置模块先压缩或注释掉。

    image

    第二种就是配置的内容是否有错误,是否生效

    image

    PHP与MySQL之间:

    image

    6.在blog站点目录下创建第二个文件mysqli.php

    [root@web01 /blog]# vim mysqli.php 
    <?php
    $servername = "localhost";
    $username = "wordpress";
    $password = "123456";
    
    // 创建连接
    $conn = mysqli_connect($servername, $username, $password);
    
    // 检测连接
    if (!$conn) {
        die("Connection failed: " . mysqli_connect_error());
    }
    echo "php连接MySQL数据库成功";
    ?>
    
    

    然后用浏览器访问网站

    http://10.0.0.7/mysqli.php

    image.png

    搭建wordpress博客

    官网:https://cn.wordpress.org/
    wordpress开源博客压缩包链接:
    https://pan.baidu.com/s/1KOI3FZV8VY22rxD731pp0g 提取码: 7naq

    image.png

    解压后将wordpress下的所有内容移动到blog站点目录下

    image

    修改权限blog站点目录的属主属组为nginx

    [root@web01 ~]#  chown  -R nginx.nginx /usr/share/nginx/html/blog/
    [root@web01 ~]# ll -d /usr/share/nginx/html/blog/
    drwxr-xr-x 5 nginx nginx 4096 Jun  6 21:03 /usr/share/nginx/html/blog/
    
    

    浏览器输入网址http://10.0.0.7

    image

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