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Brian Sheets wrote:
Looking at ldirectord it looks like it uses the DBI module for perl, which is
installed. But there is no mysql binary.. You think it may need that?
Oh yeah, you're right - uses DBI. I'm pretty sure it wouldn't need the
mysql binary.
It looks like if you run ldirectord in debug mode (flag: -d), there is
some debug code in the check_mysql routine that will print what's going
on to stdout. Maybe give that a try.
-- GW.
Yes, tcpdump is getting packets. I'm using ldirectord in several implementations and it works well, this is the only one I'm having issue with
----- Original Message -----
From: "Guy Waugh" <gwaugh@xxxxxxxxxx>
To: "LinuxVirtualServer.org users mailing list."
<lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Sunday, February 4, 2007 8:08:21 PM (GMT-0800) US/Pacific
Subject: Re: help with load balancing mysql
Brian Sheets wrote:
One thing I forgot to note is that ldirectord exits silently, and the ip's are
up and operational when this happens. I have to comment out the mysql config
lines and restart heartbeat, which starts ldirectord.
Most peculiar...
Another thought: Is the mysql command-line binary accessible to the user
running heartbeat (on my RHEL3 system, root starts heartbeat but setuids
to nobody - I don't know which user starts the daemon resources)?
Did you find out whether tcpdump on the real servers are getting packets
when you telnet to port 3306 from the director to the real servers?
Other than those thoughts, I'm not sure I'm going to be much more
help... I don't load-balance mysql myself, although I do use a few
'negotiate'-type checks in my ldirectord config, for http, https,
smtp and dns - they have all worked fine for me.
Cheers,
Guy.
Brian
----- Original Message -----
From: "Guy Waugh" <gwaugh@xxxxxxxxxx>
To: bsheets@xxxxxxxxxxxxx, "LinuxVirtualServer.org users mailing list."
<lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Sunday, February 4, 2007 4:12:15 PM (GMT-0800) US/Pacific
Subject: Re: help with load balancing mysql
bsheets@xxxxxxxxxxxxx wrote:
Ipvsadm shows both servers with a weight of zero. Both reals have lo:0 and the
appropriate sysctl.conf entries. This ldirectord is functional for other
virtuals.
There is no relevent errors, and it does show both reals being added with a
weight of 0
The part that it doesn't appear to be making the negotiate connection to verify
the service is weird
Indeed it is weird.
All I can think of is: Any difference putting the 'service=mysql' line
under the 'real=...' lines? (probably not), and... What does the
ldirectord log say when you start ldirectord?
Also, with tcpdump on the real servers active, does it register packets
when you telnet to port 3306 from the director (just to check that
tcpdump is working)?
- GW.
-----Original Message-----
From: Guy Waugh <gwaugh@xxxxxxxxxx>
Date: Mon, 05 Feb 2007 10:19:17
To:"LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: help with load balancing mysql
Brian Sheets wrote:
I'm having a problem load balancing MySQL with ldirectord
here is my config
# MYSQL
virtual=172.16.10.122:3306
service=mysql
real=172.16.10.120:3306 gate
real=172.16.10.121:3306 gate
checktype=negotiate
login="ldirector"
passwd="xxxxxx"
database="ldirectordb"
request="select * from connectioncheck"
scheduler=wrr
I'm running this using the latest ultramonkey on debian sarge.
I can run a tcpdump on the real server and look for port 3306 connections to the db to connect and run the check, but none are being made
Anyone have any ideas?
What's the output of 'ipvsadm -Ln'? Is the virtual service listed, and
if so, are the real servers listed?
Anything in the ldirectord log?
Given you're using LVS-DR, do the real servers have the 172.16.10.122
address set up as a loopback address?
Cheers,
Guy.
thanks
Brian
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Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
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_______________________________________________
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Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
or go to http://www.in-addr.de/mailman/listinfo/lvs-users
------------------------------------------------------------------------
_______________________________________________
LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
or go to http://www.in-addr.de/mailman/listinfo/lvs-users
--
Guy Waugh
Unix System Administrator
IT&TS, Southern Cross University
Lismore, NSW, Australia
Email: gwaugh@xxxxxxxxxx
Ph.: +61 2 6620 3196
Fax: +61 2 6620 3033
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