455360 - SSH sessions being dropped from my laptop to build machines

Status: RESOLVED INCOMPLETE

(mozilla.org Graveyard :: Server Operations, task)

Description

[John O'Duinn [:joduinn] (please use "needinfo?" flag)]

I run xterms with ssh sessions to build machines. While editing, or even when idle, I get dropped connections, forcing me to relogin and recovered files being edited.

$ vi moRead from remote host staging-master.build.mozilla.org: Connection reset by peer
Connection to staging-master.build.mozilla.org closed.

fyi: mrz did an experiment starting Friday where he was able to connect to the same moz2-linux-slave04.build.m.o machine, using the same "cltbld" user account, and remain connected over the weekend. However, over the same weekend, I lose connections intermittently from every few minutes to a few hours. Never yet been able to keep a connection open for an entire day. This experiment makes me think it might be a problem with my laptop, but thats just a SWAG?

This has always been a bit of a problem, but feels like its become worse recently. Help?

Comment 1

[matthew zeier [:mrz]]

fyi, the only timeout setting on the firewall is an hour for idle tcp connections.  However, since you mentioned you get dropped connections while editting, that's probably not it.

btw, I was able to duplicate this by going through mpt-vpn - my idle connection was disconnected an hour later.

Comment 2

[John O'Duinn [:joduinn] (please use "needinfo?" flag)]

Happened again several times today. 

Sometimes while editing a doc. 
Sometimes while working in one window, would lose all ssh connections, including the one I'm working in and the other "idle" ones that I was working in just a few minutes before...

Comment 3

[matthew zeier [:mrz]]

This sounds more like you're losing all network connectivity.  Do you notice drops while streaming some audio/video content?

Comment 4

[matthew zeier [:mrz]]

John, have you been able to duplicate this drop while streaming some thing?

Comment 5

[matthew zeier [:mrz]]

Marking closed.  When/if it happens again I need to know if you've lost connectivity or if it's something else.  Hoping to see if you can duplicate this drop while streaming some thing.