Browsing cPanel account causes websites to 'crash'

Good morning, guys.

I'm experiencing a strange issue with cPanel/WHM and wonder whether anybody could lead me in the right direction in terms of searching for a cause/solution! We're running WHM 11.44.1 on a dedicated server and have two websites hosted on it. I'll call them Domain1 and Domain2 for ease of explanation! Earlier this week I was logged in to cPanel as Domain1 when I seemingly lost connectivity to the site. My browser eventually displayed a 'timeout' error but, in the mean time, I discovered that the two websites: domain1.co.uk and domain2.co.uk were unavailable. I was unable to get to WHM, cPanel or the websites themselves via HTTP. After a couple of minutes, connectivity was restored. Since that point, however, this problem arises every time I attempt to use cPanel as Domain1. I've successfully replicated the problem upon every login. Sometimes it takes a longer than others but, for the most part, I'll lose connection within a few minutes.

As a test, I've spent time browsing cPanel whilst logged in as Domain2 and haven't been able to replicate the problem. It only seems to arise when logged in as Domain1.

During the downtime I am able to ping the IP addresses of the websites successfully. However, HTTP is down. I use a tool called 'Pingdom' to check the website status and it reports the outages whenever this problem occurs (they tend to last 3-4 minutes).

I've restarted the Apache service but the problem is persisting. The 'errors' dialogue within Domain1's cPanel is blank so I can't see any reason for the problem there.

Does anybody have any ideas as to why my use of cPanel as one of two domains hosted on our server could cause our websites to drop? I've attempted to look through cPanel and WHM for related errors but so far I've not found much of use.

Thanks a lot in advance, all!

Luke.

 

I've encountered another unusual issue and I'm beginning to wonder whether there's an underlying factor linking them. At this point, it's important that I point out that I performed a software update for MySQL (5.1 to 5.5) on the 2nd September as I'd received a prompt advising me that 5.1 is no longer supported. I essentially kept any settings that I was asked to configure as their default and continued with the process. When it came to restarting the Apache service I noticed that the main window stayed blank. I checked the Apache status after five minutes or so and found that it was up and running and so I assumed that all was well.

However, the Apache Restart screen is still blank when I opt to restart the service, as per the below:



Based on the steps I've taken previously and the example attached does anybody have any further idea of whether these problems are somehow linked?

 

Hi Michael!

Thanks very much for responding! There seems to be an abundance of entries in these logs, to be honest. I've taken a look at the last 2000 using an SSH client. Would you like me to provide a few examples? I have to hold my hands up at this point and admit that my knowledge of cPanel (and, indeed, Linux in general!) is limited so I may be passing over potentially important entries without even realising!

Luke.

 

Good morning, Michael.

Here are the latest entries from the error_log file, as requested! These are the only entries that seem to be added but they're incredibly consistent and it seems that this has been the case for several days.

Code:

[Fri Sep 12 09:26:18 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:08 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:30 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:15 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:15 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:18 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:27 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:18 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:18 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:51 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:29 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:29 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:29 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:05 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:05 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:24 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:28 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:28 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:28 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:28 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:28 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:28 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:31:28 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:57 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:57 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:57 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:57 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:57 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:57 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:32:57 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:33:07 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:41 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:41 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:41 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:41 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:41 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:41 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:41 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:42 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:43 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:44 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:34:52 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:25 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:35:26 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:08 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:27:30 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:10 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:15 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:15 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:16 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:17 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:18 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:28:27 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:18 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:18 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:39 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:40 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:29:51 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE
[Fri Sep 12 09:30:00 2014] [error] an unknown filter was not added: DEFLATE

Thanks for letting me know about the ticket creation. Much appreciated! I'm trying to raise a ticket to go alongside this post at the moment but I'm getting the following error when I attempt to submit it:

I'll try it again shortly!

Thanks again.

Luke.

 

Hi Michael,

I have logged the ticket this morning. The ID is: 5462779. I've copied and pasted my initial post for the description. If there's anything else I can do to help please let me know!

Thanks a lot for your assistance.

Luke.