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mysql移动数据存放目录及问题

2013-12-29 19:24:47 本站原创 佚名 【字体: {SQL_我要评论()}

我计划更换数据库的存放目录,下面是我的操作步骤

1:首先创建新的数据存放路径并授予权限

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[root@pacteralinux mntsdc2formysql]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              29G   20G  7.5G  73% /
tmpfs                 776M     0  776M   0% /dev/shm
/dev/sdb1              69G  4.0G   62G   6% /mnt/resource
/dev/sdc1             362G   53G  291G  16% /usr/local/Tomcat_Trans/webapps/infoSocketService/logs
/dev/sdc2             131G  2.2G  122G   2% /mnt/mntsdc2formysql
[root@pacteralinux mntsdc2formysql]# pwd
/mnt/mntsdc2formysql
[root@pacteralinux mntsdc2formysql]# mkdir mysqldata
[root@pacteralinux mntsdc2formysql]# ll
total 2050024
drwx------. 2 root root      16384 Dec  2 14:20 lost+found
drwxr-xr-x. 2 root root       4096 Dec 26 13:29 mysqldata
-rw-r--r--. 1 root root 2097152000 Dec  7 23:20 swapfile
[root@pacteralinux mntsdc2formysql]# cd mysqldata/
[root@pacteralinux mysqldata]# chown mysql:mysql .
[root@pacteralinux mysqldata]# cd ..
[root@pacteralinux mntsdc2formysql]# ll
total 2050024
drwx------. 2 root  root       16384 Dec  2 14:20 lost+found
drwxr-xr-x. 2 mysql mysql       4096 Dec 26 13:29 mysqldata
-rw-r--r--. 1 root  root  2097152000 Dec  7 23:20 swapfile
[root@pacteralinux mntsdc2formysql]# chmod 755 mysqldata/
[root@pacteralinux mntsdc2formysql]# ll
total 2050024
drwx------. 2 root  root       16384 Dec  2 14:20 lost+found
drwxr-xr-x. 2 mysql mysql       4096 Dec 26 13:29 mysqldata
-rw-r--r--. 1 root  root  2097152000 Dec  7 23:20 swapfile

2:停止mysql

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[root@pacteralinux mntsdc2formysql]# ps -ef|grep mysql
root      7451  7425  0 13:28 pts/1    00:00:00 grep mysql
root     56138     1  0 Dec24 ?        00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/mnt/resource/mysqldate --pid-file=/mnt/resource/mysqldate/pacteralinux.pid
mysql    56391 56138  0 Dec24 ?        00:00:44 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/mnt/resource/mysqldate --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/mnt/resource/mysqldate/pacteralinux.err --pid-file=/mnt/resource/mysqldate/pacteralinux.pid --socket=/mnt/resource/mysqldate/mysql.sock --port=3306
[root@pacteralinux ~]# service mysqld stop
Shutting down MySQL..[  OK  ]
[root@pacteralinux ~]# service mysqld stop
Shutting down MySQL..[  OK  ]
[root@pacteralinux ~]# ps -ef|grep mysql
root      7505  7376  0 13:32 pts/0    00:00:00 grep mysql

3:移动目录

我现在数据库的存放路径为

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[root@pacteralinux ~]# cd /mnt/resource/mysqldate
[root@pacteralinux mysqldate]# ll
total 176676
-rw-rw----. 1 mysql mysql       56 Nov 25 17:17 auto.cnf
-rw-rw----. 1 mysql mysql 79691776 Dec 26 13:32 ibdata1
-rw-rw----. 1 mysql mysql 50331648 Dec 26 13:32 ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 Nov 26 13:39 ib_logfile1
drwx------. 2 mysql mysql     4096 Nov 26 13:41 mysql
drwx------. 2 mysql mysql    20480 Nov 26 17:00 mysqldb
-rw-rw----. 1 mysql root    514836 Dec 26 13:32 pacteralinux.err
drwx------. 2 mysql mysql     4096 Nov 26 13:41 performance_schema
drwx------. 2 mysql mysql     4096 Nov 26 13:41 test
drwx------. 2 mysql mysql     4096 Dec  9 16:49 weixindemo

移动

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[root@pacteralinux resource]# mv mysqldate/  /mnt/mntsdc2formysql/mysqldata/
[root@pacteralinux resource]# ll
total 24
drwx------. 2 root root 16384 Nov 20 13:57 lost+found
drwxr-xr-x. 2 root root  4096 Dec  2 15:02 mysqldataper
drwxr-xr-x. 2 root root  4096 Dec  2 15:02 sdc3mnt
[root@pacteralinux resource]# pwd
/mnt/resource
[root@pacteralinux resource]# cd /mnt/mntsdc2formysql/
[root@pacteralinux mntsdc2formysql]# ll
total 2050024
drwx------. 2 root  root       16384 Dec  2 14:20 lost+found
drwxr-xr-x. 3 mysql mysql       4096 Dec 26 13:42 mysqldata
-rw-r--r--. 1 root  root  2097152000 Dec  7 23:20 swapfile
[root@pacteralinux mntsdc2formysql]# cd mysqldata/
[root@pacteralinux mysqldata]# ll
total 4
drwxr-xr-x. 7 mysql mysql 4096 Dec 26 13:32 mysqldate
[root@pacteralinux mysqldata]# cd mysqldate/
[root@pacteralinux mysqldate]# ll
total 176860
-rw-rw----. 1 mysql mysql       56 Nov 25 17:17 auto.cnf
-rw-rw----. 1 mysql mysql 79691776 Dec 26 13:32 ibdata1
-rw-rw----. 1 mysql mysql 50331648 Dec 26 13:32 ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 Nov 26 13:39 ib_logfile1
drwx------. 2 mysql mysql     4096 Nov 26 13:41 mysql
drwx------. 2 mysql mysql    20480 Nov 26 17:00 mysqldb
-rw-rw----. 1 mysql root    514836 Dec 26 13:32 pacteralinux.err
drwx------. 2 mysql mysql     4096 Nov 26 13:41 performance_schema
drwx------. 2 mysql mysql     4096 Nov 26 13:41 test
drwx------. 2 mysql mysql     4096 Dec  9 16:49 weixindemo
[root@pacteralinux mysqldate]# mv * ../
[root@pacteralinux mysqldate]# ll
total 0
[root@pacteralinux mysqldate]# cd ..
[root@pacteralinux mysqldata]# ll
total 176864
-rw-rw----. 1 mysql mysql       56 Nov 25 17:17 auto.cnf
-rw-rw----. 1 mysql mysql 79691776 Dec 26 13:32 ibdata1
-rw-rw----. 1 mysql mysql 50331648 Dec 26 13:32 ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 Nov 26 13:39 ib_logfile1
drwx------. 2 mysql mysql     4096 Nov 26 13:41 mysql
drwxr-xr-x. 2 mysql mysql     4096 Dec 26 13:48 mysqldate
drwx------. 2 mysql mysql    20480 Nov 26 17:00 mysqldb
-rw-rw----. 1 mysql root    514836 Dec 26 13:32 pacteralinux.err
drwx------. 2 mysql mysql     4096 Nov 26 13:41 performance_schema
drwx------. 2 mysql mysql     4096 Nov 26 13:41 test
drwx------. 2 mysql mysql     4096 Dec  9 16:49 weixindemo
[root@pacteralinux mysqldata]# rm -rf mysqldate/
[root@pacteralinux mysqldata]# ll
total 176860
-rw-rw----. 1 mysql mysql       56 Nov 25 17:17 auto.cnf
-rw-rw----. 1 mysql mysql 79691776 Dec 26 13:32 ibdata1
-rw-rw----. 1 mysql mysql 50331648 Dec 26 13:32 ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 Nov 26 13:39 ib_logfile1
drwx------. 2 mysql mysql     4096 Nov 26 13:41 mysql
drwx------. 2 mysql mysql    20480 Nov 26 17:00 mysqldb
-rw-rw----. 1 mysql root    514836 Dec 26 13:32 pacteralinux.err
drwx------. 2 mysql mysql     4096 Nov 26 13:41 performance_schema
drwx------. 2 mysql mysql     4096 Nov 26 13:41 test
drwx------. 2 mysql mysql     4096 Dec  9 16:49 weixindemo
[root@pacteralinux mysqldata]#

4:修改配置文件

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basedir =/usr/local/mysql
#datadir =/mnt/resource/mysqldate
datadir=/mnt/mntsdc2formysql/mysqldata
port =3306
#socket =/mnt/resource/mysqldate/mysql.sock
socket =/mnt/mntsdc2formysql/mysqldata/mysql.sock

5:启动mysql

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[root@pacteralinux mysqldata]# service mysqld start
Starting MySQL...[  OK  ]
[root@pacteralinux mysqldata]# ps -ef|grep mysql
root      7584     1  0 13:56 pts/0    00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/mnt/mntsdc2formysql/mysqldata --pid-file=/mnt/mntsdc2formysql/mysqldata/pacteralinux.pid
mysql     7837  7584  7 13:56 pts/0    00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/mnt/mntsdc2formysql/mysqldata --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/mnt/mntsdc2formysql/mysqldata/pacteralinux.err --pid-file=/mnt/mntsdc2formysql/mysqldata/pacteralinux.pid --socket=/mnt/mntsdc2formysql/mysqldata/mysql.sock --port=3306
root      7869  7376  0 13:56 pts/0    00:00:00 grep mysql
[root@pacteralinux mysqldata]#

至此,mysql数据存放路径移动完成!

其中,有几个小疑问

  • 我看到有的博文里面说需要修改启动脚本/etc/init.d/mysqld的datadir参数,我看了一下该脚本,如下

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basedir=
datadir=
# Default value, in seconds, afterwhich the script should timeout waiting
# for server start.
# Value here is overriden by value in my.cnf.
# 0 means don't wait at all
# Negative numbers mean to wait indefinitely
service_startup_timeout=900
# Lock directory for RedHat / SuSE.
lockdir='/var/lock/subsys'
lock_file_path="$lockdir/mysql"
# The following variables are only set for letting mysql.server find things.
# Set some defaults
mysqld_pid_file_path=
if test -z "$basedir"
then
  basedir=/usr/local/mysql
  bindir=/usr/local/mysql/bin
  if test -z "$datadir"
  then
    datadir=/mnt/resource/mysqldate
  fi

我看到datadir还是之前的那个路径,不知道要不要改!

  • 还有,我看到有人说新路径要设置为777权限,设置为755权限报错,但是我的却没有报错

 

在这个过程中出现的问题

问题描述:当我在mysql-front工具上连接mysql数据库时没有问题,但是当我在命令行连接时报错:

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[root@pacteralinux weixindemo]# mysql -u root -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/mnt/resource/mysqldate/mysql.sock' (2)

很奇怪,这个路径不是改过嘛,看代码:

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#socket =/mnt/resource/mysqldate/mysql.sock
socket =/mnt/mntsdc2formysql/mysqldata/mysql.sock

但是为什么还是报以前的路径错误,以为问题出在启动脚本上/etc/init.d/mysqld ,但是看了下,启动脚本里面没有设置socket相关项了!没办法,还是把/etc/init.d/mysqld的datedir改为现在的安装路径

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[root@pacteralinux ~]# vi /etc/init.d/mysqld
basedir=/mnt/resource/mysqldate
datadir=

重启还是报同样的错,没办法,看下错误日志吧:

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131226 13:32:38 mysqld_safe mysqld from pid file /mnt/resource/mysqldate/pacteralinux.pid ended
131226 13:56:18 mysqld_safe Starting mysqld daemon with databases from /mnt/mntsdc2formysql/mysqldata
2013-12-26 13:56:19 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2013-12-26 13:56:19 7837 [Note] Plugin 'FEDERATED' is disabled.
2013-12-26 13:56:19 7837 [Note] InnoDB: The InnoDB memory heap is disabled
2013-12-26 13:56:19 7837 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2013-12-26 13:56:19 7837 [Note] InnoDB: Compressed tables use zlib 1.2.3
2013-12-26 13:56:19 7837 [Note] InnoDB: Not using CPU crc32 instructions
2013-12-26 13:56:19 7837 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2013-12-26 13:56:19 7837 [Note] InnoDB: Completed initialization of buffer pool
2013-12-26 13:56:19 7837 [Note] InnoDB: Highest supported file format is Barracuda.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/doc_type'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."doc_type"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/documents'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."documents"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/menu_event_response_config'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."menu_event_response_config"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/pictures'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."pictures"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/response_config'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."response_config"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/sys_function'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."sys_function"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/sys_function_catalog'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."sys_function_catalog"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/sys_orgnization'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."sys_orgnization"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/sys_role'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."sys_role"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/sys_role_function'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."sys_role_function"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/sys_user'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."sys_user"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/sys_user_role'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."sys_user_role"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/usr_chat_his'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."usr_chat_his"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/usr_message'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."usr_message"', ignored.
2013-12-26 13:56:19 7fac674d7720  InnoDB: Operating system error number 2 in a file operation.
InnoDB: The error means the system cannot find the path specified.
InnoDB: If you are installing InnoDB, remember that you must create
InnoDB: directories yourself, InnoDB does not create them.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Could not find a valid tablespace file for 'weixin/wx_config'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2013-12-26 13:56:19 7837 [ERROR] InnoDB: Tablespace open failed for '"weixin"."wx_config"', ignored.
2013-12-26 13:56:19 7837 [Note] InnoDB: 128 rollback segment(s) are active.
2013-12-26 13:56:20 7837 [Note] InnoDB: Waiting for purge to start
2013-12-26 13:56:20 7837 [Note] InnoDB: 5.6.14 started; log sequence number 2138639
2013-12-26 13:56:20 7837 [Note] Server hostname (bind-address): '*'; port: 3306
2013-12-26 13:56:20 7837 [Note] IPv6 is available.
2013-12-26 13:56:20 7837 [Note]   - '::' resolves to '::';
2013-12-26 13:56:20 7837 [Note] Server socket created on IP: '::'.
2013-12-26 13:56:20 7837 [Note] Event Scheduler: Loaded 0 events
2013-12-26 13:56:20 7837 [Note] /usr/local/mysql/bin/mysqld: ready for connections.
Version: '5.6.14'  socket: '/mnt/mntsdc2formysql/mysqldata/mysql.sock'  port: 3306  Source distribution
2013-12-26 14:42:17 7837 [Warning] IP address '182.151.205.254' could not be resolved: Name or service not known

 

算了,其他的错先不看,最后几行说的那是啥,不能解析主机,越来不懂了

不死心,再看下/etc/my.cnf文件

哈哈,发现了这个

1
2
3
# *** upgrade to a newer version of MySQL.
[client]
socket =/mnt/resource/mysqldate/mysql.sock

哇咔,改为现在目录启动OK

mysql移动数据存放目录及问题来自:http://www.woaidiannao.com/html/ITjs/sjk/9162.html

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