FIXED.
For those that don't know go through the searchable archive of this mailing
list (http://lists.mysql.com) ... I should have done in the first case!
Anyway, if ever you get the socket error described below it's just a case
of setting your permissions correctly.
chmod 700 datadir (e.g chmod 700 /var/lib/mysql )
So, below is an idiots guide to moving a database somewhere else (on same
host). Which is where all my problems originally started. All actions
performed from the root user account (steady kids).
1. Make a directory on the filesystem where you want to put the database
(in my case the /x filesystem)
mkdir /x/mysql
mkdir /x/mysql/testdb {testdb = name of database}
2. Change ownership on the directories: { mysql = username of MySQL
admin account)
chown mysql /x/mysql
chown mysql /x/mysql/testdb
3. Change protection mode on above directories:
chmod 700 /x/mysql
chmod 660 /x/mysql/testdb
chgrp mysql /x/mysql/testdb
4. Shutdown mysql server
mysqladmin -p shutdown
5. Copy database files from original directory to new directory
cp -rp /var/lib/mysql/testdb /x/mysql
6. Check permissions (see 2 + 3 above)
7. Rename original database directory to something "safe" as a backup.
mv /var/lib/mysql/testdb /var/lib/mysql/testdb.sav
8. Create symbolic link:
ln -s /x/mysql/testdb /var/lib/mysql/testdb
9. Restart Server:
/etc/init.d/mysql start (or your usual method)
Hey Tesco, everything should work. (This process worked for me on a REd Hat
7.0 machine - intel ). Mind you, this is only a test machine with a small
database. On a larger production database you would probably want to make a
dump of the database first as an additional safeguard - all I've done here
is to preserve the original database directory (renamed ..../testdb to
..../testdb.sav)
Hope this is of some use to somebody.
rgds
Neil.
At 10:54 31/07/01, Neil Barnes wrote:
>Hi Guys,
>
> Ahem...er, I've dropped a clanger! I tried to move my
> datadirectory to another device with more room. And yes, I know NOW that
> I should have created symbolic links for the databases in question
> but...well, the rest is history...
>*********************
>First Tech info: Red Hat Linux v7.0, Intel.
>
>Latest version of MySQL = 3.23.39
>
>6049585 Jul 11 10:29 MySQL-3.23.39-1.i386.rpm
> 698022 Jul 11 13:31 MySQL-bench-3.23.39-1.i386.rpm
>1772486 Jul 11 11:08 MySQL-client-3.23.39-1.i386.rpm
> 232649 Jul 11 11:03 MySQL-shared-3.23.39-1.i386.rpm
>
>
>So:
>
>1. Shutdown server.
>2. Copied datadir (/var/lib/mysql) to new directory in its entirity
>(/x/mysql).
>3. Edited startup script (/etc/init.d/mysql) and changed the entry
>"datadir=/var/lib/mysql" to "datadir=/x/mysql"
>4. Restarted server - server came up OK but I couldn't connect to it.
>5. Shutdown server.
>6. Edited startup script back as normal (/var/lib/mysql)
>7. COULD NOT RESTART SERVER (see my error log below).
>
>It seems that there is a file called mysql.sock which is causing the problems.
>Any ideas anyone?
>
>**** datadirectory
>(/var/lib/mysql) = drwxr-xr-x 6 root root 1024 Jul 31 09:23
>mysql
>
>**** extract from /etc/init.d/mysql
># Set some defaults
>datadir=/var/lib/mysql
>basedir=
>pid_file=
>
>*** extract from my error log (the first bit must be when I shut down and
>there was idle users connected).
>
>010725 15:08:56 Aborted connection 311 to db: 'norasia' user: 'adminit'
>host: `localhost' (Got an e
>rror reading communication packets)
>010731 8:52:14 Aborted connection 555 to db: 'unconnected' user: 'root'
>host: `localhost' (Got an
>error writing communication packets)
>010731 8:52:14 /usr/sbin/mysqld: Normal shutdown
>
>010731 8:52:14 /usr/sbin/mysqld: Shutdown Complete
>
>010731 08:52:14 mysqld ended
>
>010731 08:59:06 mysqld started
>010731 8:59:06 /usr/sbin/mysqld: Can't create/write to file
>'/x/mysql/mail.dcaliner.co.uk.pid' (Er
>rcode: 13)
>/usr/sbin/mysqld: ready for connections
>010731 09:07:12 mysqld ended
>010731 09:16:51 mysqld started
>010731 9:16:51 Can't start server : Bind on unix socket: Permission denied
>010731 9:16:51 Do you already have another mysqld server running on
>socket: /var/lib/mysql/mysql.s
>ock ?
>010731 9:16:51 Aborting
>
>010731 9:16:51 /usr/sbin/mysqld: Shutdown Complete
>
>010731 09:16:51 mysqld ended
>
>010731 09:19:04 mysqld started
>010731 9:19:04 Can't start server : Bind on unix socket: Permission denied
>010731 9:19:04 Do you already have another mysqld server running on
>socket: /var/lib/mysql/mysql.s
>ock ?
>010731 9:19:04 Aborting
>
>010731 9:19:04 /usr/sbin/mysqld: Shutdown Complete
>
>010731 09:19:04 mysqld ended
>
>
>Neil Barnes, Systems Manager
>DCA Liner Limited
>4 Pennine Way,
>Saltley Business Park,
>Saltley,
>Birmingham B8 1JW
>
>T: +44 121 325 7527
>F: +44 121 328 2552
>E: [EMAIL PROTECTED]
>
>
>
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Neil Barnes, Systems Manager
DCA Liner Limited
4 Pennine Way,
Saltley Business Park,
Saltley,
Birmingham B8 1JW
T: +44 121 325 7527
F: +44 121 328 2552
E: [EMAIL PROTECTED]
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