- 将LNMP一体机的数据库分离成独立的数据库
- 创建独立的数据库（db01-51数据库）
wget http://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.49-linux2.6-x86_64.tar.gz
tar xf mysql-5.5.49-linux2.6-x86_64.tar.gz
mkdir -p /application
mv mysql-5.5.49-linux2.6-x86_64 /application/mysql-5.5.49
ln -s /application/mysql-5.5.49 /application/mysql
useradd -s /sbin/nologin mysql -M
chown -R mysql.mysql /application/mysql/data/
cd /application/mysql
./scripts/mysql_install_db --user=mysql --basedir=/application/mysql/ --datadir=/application/mysql/data/
\cp support-files/my-small.cnf /etc/my.cnf
cp support-files/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
sed -i 's#/usr/local/mysql#/application/mysql#g' /application/mysql/bin/mysqld_safe /etc/init.d/mysqld
/etc/init.d/mysqld start
netstat -lntup|grep mysql
cp -a /application/mysql/bin/* /usr/local/sbin/
mysql
b.导出lnmp中的wordpress数据库数据（web01服务器）
mysqldump -uroot -p123456 wordpress -B |gzip>bak.sql.gz
c.导入到51的数据库中（web01服务器）
scp bak.sql.gz [email protected]:/tmp
d.解压并导入（db01服务器）
gzip -d bak.sql.gz
mysqladmin -uroot password ceshi123 #创建用户和密码
mysql -uroot -pceshi123 </tmp/bak.sql #导入数据库
mysql -uroot -pceshi123 -e "show databases like 'wordpress';" #查看数据库内容
mysql -uroot -pceshi123 -e "use wordpress;show tables;" #查看数据库是否有表
grant all on wordpress.* to wordpress@'172.16.1.%' identified by '123456'; #创建库管理员
flush privileges; #重新加载
select user,host from mysql.user;
e.更改.8服务器的配置文件
vim /application/nginx/html/blog/wp-config.php
/** MySQL主机 */
define('DB_HOST', '172.16.1.51'); #只修改主机名为51服务器的ip
f.关闭.8服务器的本地数据库
/etc/init.d/mysqld stop
chkconfig mysqld off
g.查看数据库的记录
select * from old_posts\G;
服务器的具体操作过程：
web01服务器的所有操作：
[root@web01 ~]# mysqldump -uroot -p123456 wordpress -B |gzip>bak.sql.gz
[root@web01 ~]# scp bak.sql.gz [email protected]:/tmp
[email protected]'s password:
bak.sql.gz 100% 130KB 130.2KB/s 00:00
[root@web01 ~]# /etc/init.d/mysqld stop
Shutting down MySQL.. SUCCESS!
[root@web01 ~]# chkconfig mysqld off
[root@web01 ~]# cd /application/nginx/html/blog/
[root@web01 blog]# vim wp-config.php
/** MySQL主机 */
define('DB_HOST', '172.16.1.51');
db01服务器的所有操作：
[root@db01 ~]# cd /tmp/
[root@db01 tmp]# ls
bak.sql.gz mysql.sock
[root@db01 tmp]# gzip -d bak.sql.gz
[root@db01 tmp]# ls
bak.sql mysql.sock
[root@db01 tmp]# mysqladmin -uroot password ceshi123
[root@db01 tmp]# mysql -uroot -pceshi123 </tmp/bak.sql
[root@db01 tmp]# mysql -uroot -pceshi123 -e "show databases like 'wordpress';"
+----------------------+
| Database (wordpress) |
+----------------------+
| wordpress |
+----------------------+
[root@db01 tmp]# mysql -uroot -pceshi123 -e "use wordpress;show tables;"
+------------------------+
| Tables_in_wordpress |
+------------------------+
| old_commentmeta |
| old_comments |
| old_links |
| old_options |
| old_postmeta |
| old_posts |
| old_term_relationships |
| old_term_taxonomy |
| old_termmeta |
| old_terms |
| old_usermeta |
| old_users |
+------------------------+
mysql> grant all on wordpress.* to wordpress@'172.16.1.%' identified by '123456';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> select user,host from mysql.user;
+-----------+------------+
| user | host |
+-----------+------------+
| root | 127.0.0.1 |
| wordpress | 172.16.1.% |
| root | ::1 |
| | centos |
| root | centos |
| | localhost |
| root | localhost |
+-----------+------------+
7 rows in set (0.00 sec)
mysql> use wordpress;
Database changed
mysql> show tables
-> ;
+------------------------+
| Tables_in_wordpress |
+------------------------+
| old_commentmeta |
| old_comments |
| old_links |
| old_options |
| old_postmeta |
| old_posts |
| old_term_relationships |
| old_term_taxonomy |
| old_termmeta |
| old_terms |
| old_usermeta |
| old_users |
+------------------------+
12 rows in set (0.00 sec)
mysql> select * from old_posts\G;
*************************** 1. row ***************************
ID: 1
post_author: 1
post_date: 2018-07-11 22:22:32
post_date_gmt: 2018-07-11 14:22:32
post_content: 欢迎使用WordPress。这是您的第一篇文章。编辑或删除它，然后开始写作吧！
post_title: 世界，您好！
post_excerpt:
post_status: publish
comment_status: open
ping_status: open
post_password:
post_name: hello-world
to_ping:
pinged:
post_modified: 2018-07-11 22:22:32
post_modified_gmt: 2018-07-11 14:22:32
post_content_filtered:
post_parent: 0
guid: http://blog.etiantian.org/?p=1
menu_order: 0
post_type: post
post_mime_type:
comment_count:
2、将blog的资源文件迁移的NFS服务器上
[root@web01 ~]# cd /application/nginx/html/blog/
[root@web01 blog]# tree wp-content/uploads/
wp-content/uploads/
└── 2018
└── 07
├── timg-6-1024x640.jpg
├── timg-6-1200x750.jpg
├── timg-6-150x150.jpg
├── timg-6-300x188.jpg
├── timg-6-768x480.jpg
└── timg-6.jpg
2 directories, 6 files
资源目录为：wp-content/uploads/
在nfs01服务器上创建和web01服务器相同的用户
[root@web01 blog]# id www #查看web01服务器的用户www
uid=890(www) gid=890(www) 组=890(www)
[root@nfs01 ~]# useradd -u 890 www #nfs01服务器创建相同id号的www用户
[root@nfs01 ~]# id www
uid=890(www) gid=890(www) 组=890(www)
[root@nfs01 ~]# vi /etc/exports
/data 172.16.1.0/24(rw,sync,all_squash,anonuid=890,anongid=890)
[root@web01 blog]# showmount -e 172.16.1.31 #显示NFS服务器上所有的共享目录
Export list for 172.16.1.31:
/data1 172.16.1.0/24
/data 172.16.1.0/24
[root@web01 blog]# rpm -qa rpcbind nfs-utils #查看安装包
nfs-utils-1.2.3-75.el6_9.x86_64
rpcbind-0.2.0-13.el6_9.1.x86_64
[root@web01 blog]# /etc/init.d/rpcbind status
rpcbind (pid 985) 正在运行...
[root@web01 blog]# vi /etc/rc.local
/etc/init.d/rpcbind start #添加的内容
[root@web01 blog]# cd wp-content/uploads/
[root@web01 uploads]# mv 2018 /tmp/
[root@nfs01 ~]# mkdir /data/nfs-blog #nfs01服务器创建目录
[root@nfs01 ~]# chown -R www.www /data #授权所有者和所属组
[root@web01 wp-content]# mount -t nfs 172.16.1.31:/data/nfs-blog /application/nginx/html/blog/wp-content/uploads/ #web01挂载
[root@web01 wp-content]# df -h #查看挂载
[root@web01 wp-content]# which mount
[root@web01 wp-content]# vi /etc/rc.local
mount -t nfs 172.16.1.31:/data/nfs-blog /application/nginx/html/blog/wp-content/uploads/
[root@web01 uploads]# cp -a /tmp/2018/ .