my.cnf is not there in /etc
when i did an echo $MYSQL_HOME there is no output
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Cannot find my.cnf
i have installed mysql server on Linux CentOS OS
My question is that when i login to mysql and say
show variables;
it shows up the correct list which should come from my.cnf
But my problem is that i dont have any my.cnf on my system so where are these values coming from
And if i want to change these variables how do i do that
Thanks
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Answers
As to original question - my.cnf is just one place that the variables come from - you can specify the file to load in place of my.cnf during startup.. - these file are called options files:
http://dev.mysql.com/doc/r
also sometimes the file in the user home directory is .my.cnf (notice the dot before my.cnf)
here is an example:
mysql> show variables like 'wait%';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| wait_timeout | 28800 |
+---------------+-------+
1 row in set (0.00 sec)
mysql> set wait_timeout=28801;
Query OK, 0 rows affected (0.01 sec)
mysql> show variables like 'wait%';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| wait_timeout | 28801 |
+---------------+-------+
1 row in set (0.00 sec)
mysql>
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by: anokun7Posted on 2007-05-19 at 07:02:56ID: 19120446
Did you check under the following paths?
/etc/my.cnf
$MYSQL_HOME/my.cnf
user home directory