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Bug 355235

Summary:	disconnects from build.eclipse.org
Product:	Community	Reporter:	Kim Moir <kim.moir>
Component:	Servers	Assignee:	Eclipse Webmaster <webmaster>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	P3	CC:	rsternberg
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Windows XP
Whiteboard:

Description Kim Moir

2011-08-19 11:48:18 EDT

Hi webmaster

I've been getting disconnected from build.eclipse.org every five minutes even though I have been logged in via ssh doing get migrations. I noticed before that I seem to get disconnected after 15 minutes of inactivity via a ssh sesssion.  Has something changed here?  This is very disruptive when trying to do git migrations with many consecutive steps :-)

Comment 1 Eclipse Webmaster

2011-08-19 11:57:04 EDT

I'm not aware of any changes, and certainly based on the config file time stamp it's been a while since we did change it.

I took a quick peek in the logs but I don't see anything.

-M.

Comment 2 Denis Roy

2011-08-19 13:51:58 EDT

In your .ssh/config file, tune down your keepalive:

ServerAliveInterval 60

Also, before launching migrations, start a screen.  Even if you get booted off, you can just reattach to your screen with screen -r

Comment 3 Kim Moir

2011-08-19 16:41:56 EDT

Okay thanks Denis for the suggestions.

Comment 4 Denis Roy

2011-08-22 09:52:31 EDT

*** Bug 355386 has been marked as a duplicate of this bug. ***

Comment 5 Denis Roy

2011-08-22 09:53:37 EDT

Reopening ... seems to be happening to more than one people.

FWIW, the tips from comment 2 still apply since our firewall will terminate idle (ie, no server keepalive) sessions, but I'll look into this further.

Comment 6 Ralf Sternberg

2011-09-22 16:07:43 EDT

Sometimes, this issue makes it impossible to do any work on build.eclipse.org. Just now, my ssh session froze in a matter of seconds after login, three times in a row. It happens while I type, so it can't be a timeout. FWIW, my current IP address is 88.66.5.84, it's Thu Sep 22 15:59:33 EDT 2011. If I can do anything to help diagnoze this problem, please let me know.

Comment 7 Ralf Sternberg

2011-09-28 04:22:07 EDT

Some more detail:
* The tcp connection is still open when this happens, so it's not a disconnect, but the data transfer is just stalled:

netstat -ntp | grep 206.191.52.
tcp        0    576 192.168.10.201:47351    206.191.52.57:22        ESTABLISHED 2349/ssh        

* The issue seems to be not specific to ssh, the same happens very frequently when downloading files from the Hudson web interface.

Comment 8 Denis Roy

2011-10-05 10:52:22 EDT

I cannot reproduce this.

I've been connected to build.eclipse.org for almost 2 days now from a remote location, being completely idle overnight, and throughout the day, and I'm not being disconnected.

My .ssh/config file is configured as per comment 3.

Comment 9 Ralf Sternberg

2011-10-10 16:32:12 EDT

It seems that with this setting, this problem has gone away for me too. I could not believe that it was a timeout issue because the connection stalled in the middle of typing, sometimes in a matter of seconds after login, but anyway, since I applied the setting I haven't seen it in a while.

So from my side, the bug can be closed. I'll reopen it if the problem occurs again. Thanks for the suggested fix, I should have tested it earlier.

Comment 10 Denis Roy

2012-03-23 11:17:27 EDT

Fixed, apparently.