Poli Bou » Runtime http://www.polibou.com People. Places. Things. Wed, 08 Jun 2011 22:56:35 +0000 en hourly 1 http://wordpress.org/?v=3.1.3 ntsysv – Linux Service Manager http://www.polibou.com/2010/02/02/ntsysv-linux-service-manager/ http://www.polibou.com/2010/02/02/ntsysv-linux-service-manager/#comments Tue, 02 Feb 2010 22:43:22 +0000 Poli http://www.polibou.com/?p=359 I was configuring some Linux boxes today and discovered the ntsysv utility. This is a great command to see what services are loaded during startup. It pops up a simple GUI where you can enable and and disable services. Just run it at the terminal.

Update:
Configuring more boxes on different Linux distros. If ntsysv isn’t available for that distro you can use an equivalent utility called sysv-rc-conf.

]]> http://www.polibou.com/2010/02/02/ntsysv-linux-service-manager/feed/ 4 Kill A Running MySQL Query http://www.polibou.com/2009/06/01/kill-a-running-mysql-query/ http://www.polibou.com/2009/06/01/kill-a-running-mysql-query/#comments Mon, 01 Jun 2009 22:40:26 +0000 Poli http://www.polibou.com/?p=183 Somehow you ended up with a query that is taking too long to execute and you need to kill it. First, I’d advise against using this in an UPDATE or INSERT command as I don’t know what will happen. Most likely it’ll will just roll back the DB. For a complex SELECT that just got out of hand, this should be safe.

  1. Log into MySQL from your Linux console.
  2. Show your running queries and find the ID with a long run time. I prefer to check this first in mytop to get a real time view and to see the actual query.
  3. Identify the transaction ID.
  4. Kill it.
  5. Exit and you’re done.

[root@server /]# mysql -u root -p
Enter password: "your password"

mysql>
mysql>  show processlist;
+---------+---------+-------------------+-----------+---------+------+-------+------------------+
| Id      | User    | Host              | db        | Command | Time | State | Info             |
+---------+---------+-------------------+-----------+---------+------+-------+------------------+
| 7614534 | root    | localhost         | NULL      | Query   |    0 | NULL  | SHOW Processlist |
| 7614557 | root    | 10.10.0.111:53626 | myDB      | Query   |  9999|       | NULL             |
| 7614641 | root    | 10.10.0.111:53721 | myDB      | Sleep   |    5 |       | NULL             |
+---------+---------+-------------------+-----------+---------+------+-------+------------------+
3 rows in set (0.02 sec)

mysql> kill 7614557;
Query OK, 0 rows affected (0.00 sec)

mysql> exit
Bye
[root@server /]#
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