17 Aug
2015
17 Aug
'15
12:52 p.m.
Has anyone seen this error before?
" ERROR: db_mysql [km_dbase.c:121]: db_mysql_submit_query(): driver error
on query: Host '192.168.xxx.xxx is blocked because of many connection
errors; unblock with 'mysqladmin flush-hosts'"
I fixed it using flush hosts but I'm curious why this popped up? Is there a
way to limit connections for Kamailio and why am I reaching that limit
with *only
2* SIP endpoints? This is not a heavily utilized database by any means.
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
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17 Aug
17 Aug
12:54 p.m.
Ben,
AFAIK, every Kamailio child process creates its own MySQL connection
handle. What are your 'children' set to?
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
12:59 p.m.
Thanks for your quick reply. I left it default, my config is like this:
fork=yes
children=4
and if I check the process list for Kamailio it looks like there are 11
processes. Even so, this is not near the maximum connections supported by
MySQL.
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
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On Mon, Aug 17, 2015 at 9:54 AM, Alex Balashov <abalashov(a)evaristesys.com>
wrote:
Ben,
AFAIK, every Kamailio child process creates its own MySQL connection
handle. What are your 'children' set to?
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
1:01 p.m.
Ben,
if you look at the MySQL server, what does netstat tell you, e.g.
netstat --inet -n | grep 3306?
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
1:06 p.m.
Alex,
There are 15 total connections and 8 of them are from Kamailio. my.cnf
limit is currently set to 500.
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
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On Mon, Aug 17, 2015 at 10:01 AM, Alex Balashov <abalashov(a)evaristesys.com>
wrote:
Ben,
if you look at the MySQL server, what does netstat tell you, e.g.
netstat --inet -n | grep 3306?
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
1:08 p.m.
I should add, I fixed the error and restarted Kamailio - so it's possible
that Kamailio had way more connections at the time of the error but I did
not check the stats at that time, I was focused on fixing it. However, I
would think it's unlikely for Kamailio to create so many connections.
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
*******Confidential Notice:
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On Mon, Aug 17, 2015 at 10:06 AM, Ben Fitzgerald <ben(a)letscorp.us> wrote:
Alex,
There are 15 total connections and 8 of them are from Kamailio. my.cnf
limit is currently set to 500.
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
*******Confidential Notice:
This message is intended only for the use of the individual or entity to
which it is addressed and may contain information that is privileged,
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delete this message from all computers and contact Orion Systems/LETS Corp
immediately by return e-mail and/or telephone at (925) 566-5600
On Mon, Aug 17, 2015 at 10:01 AM, Alex Balashov <abalashov(a)evaristesys.com
wrote:
Ben,
if you look at the MySQL server, what does netstat tell you, e.g.
netstat --inet -n | grep 3306?
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
1:08 p.m.
Oh, I misread your initial post. The error message is about connection
"errors", not excessive connections.
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
1:12 p.m.
The language of the error is ambiguous. "many connection errors" could mean
lots of connections, or lots of errors related to connections.
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
*******Confidential Notice:
This message is intended only for the use of the individual or entity to
which it is addressed and may contain information that is privileged,
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of this message is not the intended recipient, you are hereby notified that
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strictly prohibited. If you have received this message in error, please
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On Mon, Aug 17, 2015 at 10:08 AM, Alex Balashov <abalashov(a)evaristesys.com>
wrote:
Oh, I misread your initial post. The error message is
about connection
"errors", not excessive connections.
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
1:19 p.m.
Actually I think I've found the issue. The two servers are connected via
two different ethernet interfaces. I initially setup the Kamailio user with
the IP of eth1 and that worked but Kamailio was trying to connect to MySQL
using eth0 (which I did not have that IP authorized to connect). By trying
to connect over and over and failing, MySQL blocked the connection (
http://dev.mysql.com/doc/refman/5.0/en/blocked-host.html).
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
*******Confidential Notice:
This message is intended only for the use of the individual or entity to
which it is addressed and may contain information that is privileged,
confidential and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
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strictly prohibited. If you have received this message in error, please
delete this message from all computers and contact Orion Systems/LETS Corp
immediately by return e-mail and/or telephone at (925) 566-5600
On Mon, Aug 17, 2015 at 10:12 AM, Ben Fitzgerald <ben(a)letscorp.us> wrote:
The language of the error is ambiguous. "many
connection errors" could
mean lots of connections, or lots of errors related to connections.
Benjamin Fitzgerald
LETS Corporation
(925) 235-1154
ben(a)letscorp.us
*******Confidential Notice:
This message is intended only for the use of the individual or entity to
which it is addressed and may contain information that is privileged,
confidential and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any dissemination, distribution or copying of this communication is
strictly prohibited. If you have received this message in error, please
delete this message from all computers and contact Orion Systems/LETS Corp
immediately by return e-mail and/or telephone at (925) 566-5600
On Mon, Aug 17, 2015 at 10:08 AM, Alex Balashov <abalashov(a)evaristesys.com
wrote:
Oh, I misread your initial post. The error
message is about connection
"errors", not excessive connections.
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
1:20 p.m.
On 08/17/2015 01:19 PM, Ben Fitzgerald wrote:
Actually I think I've found the issue. The two
servers are connected via
two different ethernet interfaces. I initially setup the Kamailio user
with the IP of eth1 and that worked but Kamailio was trying to connect
to MySQL using eth0 (which I did not have that IP authorized to
connect). By trying to connect over and over and failing, MySQL blocked
the connection (http://dev.mysql.com/doc/refman/5.0/en/blocked-host.html).
That sounds like a viable diagnosis!
--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
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