Differences between current version and predecessor to the previous major change of MySQLNotes.
Other diffs: Previous Revision, Previous Author, or view the Annotated Edit History
| Newer page: | version 9 | Last edited on Wednesday, January 12, 2005 1:49:38 pm | by AristotlePagaltzis | |
| Older page: | version 7 | Last edited on Thursday, September 9, 2004 3:58:29 pm | by PhilMurray | Revert |
@@ -1,40 +1,44 @@
-!! If you're stuck,
for whatever reason, using [MySQL]
then beware:
+!
!! If you're stuck using [MySQL]
for whatever reason, then beware:
[http://sql-info.de/mysql/gotchas.html]
-!! Resetting a forgotten [MySQL] root password
+!
!! Resetting a forgotten [MySQL] root password
-You first need to make [MySQL] forget the current credentials. This can only be done by the SuperUser or the user mysqld runs as, because the daemon must be stopped, which requires sending it a kill(1) signal (don't use __
-9__
!!). The [PID] is found in the __
.pid__
file normally found in the [MySQL] database directory:
+You first need to make [MySQL] forget the current credentials. This can only be done by the SuperUser or the user mysqld runs as, because the daemon must be stopped, which requires sending it a kill(1) signal (don't use <tt>
-9</tt>
!!). The [PID] is found in the <tt>
.pid</tt>
file normally found in the [MySQL] database directory:
-
__#__ kill `cat /path/to/mysql/datadirectory/''hostname''.pid`
+<pre>
+
__#__ kill `cat /path/to/mysql/datadirectory/''hostname''.pid`
+</pre>
-Now you can restart __
mysqld__
with the __
--skip-grant-tables__
option so that you can
set a new password. There are two alternative ways to do so
: either the __
mysqladmin__
tool, by way of
+Now you can restart <tt>
mysqld</tt>
with the <tt>
--skip-grant-tables</tt>
option, in order to able able
set a new password. There are two alternative ways to set it
: either the <tt>
mysqladmin</tt>
tool, by way of
-
__$__ mysqladmin -u root password 'mynewpassword'
- __$__ mysqladmin -h hostname flush-privileges
+<pre>
+
__$__ mysqladmin -u root password 'mynewpassword'
+__$__ mysqladmin -h hostname flush-privileges
+</pre>
-or using the __
mysql__
client:
+or using the <tt>
mysql</tt>
client:
-
__$__ mysql -u root mysql
- __mysql>__ UPDATE user SET Password=PASSWORD('mynewpassword') WHERE User='root' ;
- __mysql>__ FLUSH PRIVILEGES ;
+<pre>
+
__$__ mysql -u root mysql
+__mysql>__ UPDATE user SET Password=PASSWORD('mynewpassword') WHERE User='root' ;
+__mysql>__ FLUSH PRIVILEGES ;
+</pre>
You should now be able to connect using the new password. __''Test this!''__
-One final step remains: stop __
mysqld__
and restart it normally.
+One final step remains: stop <tt>
mysqld</tt>
and restart it normally.
See also: [MySQL Manual: A.4.2 How to reset the Root Password | http://dev.mysql.com/doc/mysql/en/Resetting_permissions.html]
-!! Clearing Unwanted Binary Log Files
+!
!! Clearing unwanted binary log files
-mysql in
some configurations can log all database activity to a binary log file (usually in /var/lib/mysql). If you have a busy site this can grow quite large. The recommended management solution in the mysql
manual is to remove binary log files that
you no longer want. They suggest removing files that are older than 3 days. To remove all binary log files you can use the following command
+In
some configurations, [MySQL]
can log all database activity to a binary log file (usually in <tt>
/var/lib/mysql</tt>
). If you have a busy site this can grow quite large. The recommended management solution in the [MySQL]
manual is to remove binary log files you no longer want. They suggest removing files that are older than 3 days. To remove all binary log files issue <tt>RESET MASTER;</tt>
- RESET MASTER ;
+!!! [PHP]'s [mysql_error() | http://php.net/mysql-error] returns <tt>Got error 28 from table handler</tt>
-!! [PHP] says the table handler is returning error 28
+Your disk runneth over. Probably <tt>/tmp</tt>. Go clear it out.
-If the [mysql_error() | http:
//www.php.net/manual/en/function.mysql-error.php] [PHP] function returns
+!!! <tt>LOAD DATA INFILE<
/tt> makes <tt>SELECT<
/tt> return garbled crap
- Got error 28
from table handler
-
-this means your disk runneth
over. Probably __/tmp__. Go clear
it out
.
+The file you are importing
from might have [DOS] line endings. Run dos2unix(1) or similar
over it and try the import again
.
