Lost connection to MySQL server - need help.

2013-10-12 Thread Jørn Dahl-Stamnes
Hello, I got a strange problem related to a production server. It has been working OK for months, but yesterday it start to fail. There are several batch scripts using the database in addition to a web application using it. The php scripts running in batch mode began to get: mysql_connect():

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread nixofortune
You might want to comment bind-address= 127.0.0.1 in your my.cnf and restart mysql server. On 12/10/13 10:49, Jørn Dahl-Stamnes wrote: Hello, I got a strange problem related to a production server. It has been working OK for months, but yesterday it start to fail. There are

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Jørn Dahl-Stamnes
On Saturday 12 October 2013 12:01, nixofortune wrote: You might want to comment bind-address= 127.0.0.1 in your my.cnf and restart mysql server. It does not explain why it works under low load and not under high load. However, I seem to have found something. When I started

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Andrew Moore
Could be a crash related to innodb data dictionary being out of sync. Could be a bug. http://bugs.mysql.com/bug.php?id=55277 On 12 Oct 2013 11:21, Jørn Dahl-Stamnes sq...@dahl-stamnes.net wrote: On Saturday 12 October 2013 12:01, nixofortune wrote: You might want to comment bind-address

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Jørn Dahl-Stamnes
On Saturday 12 October 2013 13:07, Andrew Moore wrote: Could be a crash related to innodb data dictionary being out of sync. Could be a bug. Seems like a bug yes. However, we had a strange situation yesterday when we had several processes in the state copying to tmp table (if i remember the

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Reindl Harald
Am 12.10.2013 17:02, schrieb Jørn Dahl-Stamnes: On Saturday 12 October 2013 13:07, Andrew Moore wrote: Could be a crash related to innodb data dictionary being out of sync. Could be a bug. Seems like a bug yes. However, we had a strange situation yesterday when we had several processes

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Jørn Dahl-Stamnes
On Saturday 12 October 2013 17:36, Reindl Harald wrote: so someone did optimize table on a large table you do yourself not a favour restarting the server in such a moment 7 hours before the server was shut down, we did a alter table to add a primary key to a table that is read-only from the

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Reindl Harald
Am 12.10.2013 19:45, schrieb Jørn Dahl-Stamnes: On Saturday 12 October 2013 17:36, Reindl Harald wrote: so someone did optimize table on a large table you do yourself not a favour restarting the server in such a moment 7 hours before the server was shut down, we did a alter table to add a

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Chris McKeever
We had a similar issue a bit back - and although it sounds similar - based on your followups it probably isnt, but will just toss this out there anyhows. We were experiencing connection timeouts when load would ramp up. Doing some digging we learned that our firewall between the servers

Re: Lost connection to MySQL server - need help.

2013-10-12 Thread Reindl Harald
sounds like a scheduler issue did you try deadline? http://en.wikipedia.org/wiki/Deadline_scheduler on Linux systems pass elevator=deadline as kernel param Am 12.10.2013 20:58, schrieb Chris McKeever: We had a similar issue a bit back - and although it sounds similar - based on your followups