Any Limited user or domain in one virtualmin Server ?

Submitted by ming1340 on Mon, 05/24/2010 - 02:07

Dear Sir ,

After my server gowing up , We find that the server very slow at sometime.

We find that the loading going to around 50 ?

And monitoring a lot of lookup-domain.pl is running....

Otherwise , we want to know is it have the limited of (recommand) domain or user in virtualmin ?

Status: 
Active

Comments

Submitted by andreychek on Mon, 05/24/2010 - 09:38

There's no real limit, it's all going to depend on your hardware and the sort of traffic your domains are seeing.

Some folks have hundreds of domains on a single server without a problem.

If at any point, you're seeing too high a load on a single server, it may mean your hardware isn't able to keep up with the load your sites are generating, and you may need to consider moving some of your domains to a different server.

Before doing that, I'd suggest spending some time to figure out what exactly is causing your load to spike.

If you're seeing lookup-domain a lot, that means you may be seeing a lot of email traffic. You may want to research where all the email is coming from (or going to).

Submitted by JamieCameron on Mon, 05/24/2010 - 11:36

Also, make sure the lookup-domain-daemon.pl process is running - without it, the lookup-domain process will be much slower.

If it is not running, you can start it with the command /etc/init.d/lookup-domain start

Submitted by ming1340 on Mon, 05/24/2010 - 21:09

Thank Andreychek and Jamie ,

How can i check the lookup-domain-daemon.pl is running ?

Is it type " ps -auxw |grep lookup-domain " ?

Thank a lot!

Submitted by andreychek on Mon, 05/24/2010 - 21:20

That's a good place to start -- what output do you receive when typing this:

ps auxw | grep lookup-domain

Submitted by ming1340 on Tue, 05/25/2010 - 23:24

The result is the below :

root 12280 2.5 1.2 38584 34568 ? SNs May25 32:43 /usr/libexec/webmin/virtual-server/lookup-domain-daemon.pl

root 29804 0.0 0.0 3912 652 pts/1 R+ 12:23 0:00 grep lookup-domain

Is it running ?

Submitted by JamieCameron on Tue, 05/25/2010 - 23:27

Yes, it looks like it is running OK.

If you check the log file /var/webmin/lookup-domain-daemon.log , does a line get added to it for each email your system receives?

Submitted by andreychek on Tue, 05/25/2010 - 23:28

Yup! That's the lookup daemon running, which is good.

Submitted by ming1340 on Sun, 05/30/2010 - 22:53

Is it normal , the lookup-domain-damon is keep running time = 180 and growing up.

The second pic show many many lookup-domain is running .

Is it normal ?

Please adivce.

Submitted by andreychek on Sun, 05/30/2010 - 22:59

What happens if you restart the lookup daemon -- you can do that by running this on the command line:

/etc/init.d/lookup-domain restart

After running that, do you notice a drop in how many of the processes are running?

Also, do you see any errors showing up in /var/log/maillog or /var/log/procmail.log?

Submitted by ming1340 on Mon, 05/31/2010 - 02:54

I find the following message show in procmail.log

#

Timeout connecting to lookup-domain-daemon.pl Timeout connecting to lookup-domain-daemon.pl

#

Is it back result ?

Submitted by andreychek on Mon, 05/31/2010 - 09:07

Yeah, something in the lookup-domain-daemon process may have hung. Try restarting the process by typing this on the command line:

/etc/init.d/lookup-domain restart