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We are also seeing something similiar on Dell 1750's running |
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recent 2.4 kernels. Our monitoring software shows that the servers |
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run for 1-6 months straight w/o problem and then suddenly allocate all |
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memory to something and hang, forcing us to use the DRAC's to |
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reboot. |
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|
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This started happening about 9 months ago, before that the same hardware |
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ran for up to 1YR at a time w/o probs. It also seems to happen more often |
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on apache/php/mysql systems. Postfix and tomcat boxes running on the same |
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hardware and kernels have no problems (~300 days current uptime on a few). |
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|
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Regards, |
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Matt |
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|
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--- Original Message--- |
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To: gentoo-server@l.g.o |
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From: Sean Cook <scook@×××××.net> |
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Sent: 4/24/2005 1:30PM |
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Subject: Re: [gentoo-server] Server lockups (still ping) (OT because not Gentoo-specific?) |
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|
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>> Is it a dell 1550 by any chance? |
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>> |
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>> On Sun, 2005-04-24 at 10:43 -0400, Robert Sanders wrote: |
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>> > Casey, |
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>> > |
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>> > We've been seeing issues like this for probably the last year. I was |
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>> > never able to pinpoint it to any action. We implemented remote reboot |
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>> > hardware and called it a day. |
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>> > |
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>> > Some of them had strange activity, but over a larger group of machines I |
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>> > could never find a pattern to it. It almost seems as if it cannot spawn |
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>> > any new processes. |
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>> > |
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>> > I can't help except to say your not alone. |
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>> > |
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>> > Rob |
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>> > |
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>> > Casey Allen Shobe - SeattleServer Mailing Lists wrote: |
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>> > > Hey all, |
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>> > > |
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>> > > We're seeing occasional issues with a bunch of machines we have in a |
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>> > > datacenter, most of which are currently running Gentoo. The machines will |
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>> > > run solid and fine for days, weeks, even months, and then just lock up solid |
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>> > > - the box still pings and an nmap scan shows all the normal ports open, but |
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>> > > nothing responds on any port, nothing shows up in system logs, and the times |
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>> > > we've had console access to a machine at the time, a login prompt would show |
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>> > > up, but it would just hang if you tried to log in. |
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>> > > |
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>> > > This generally indicates hardware issues to me, but it has been happening |
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>> > > across a wide array of both well-tested and new machines. In addition, it |
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>> > > happens on machines that are running Red Hat 7.1 through 9.0 as well as |
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>> > > Gentoo. The problem seems random, and there is almost always close to zero |
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>> > > load on the machine when it locks up (only once were we presently using the |
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>> > > machine, and it locked up while uncompressing a tar file). |
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>> > > |
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>> > > The Gentoo systems use the deadline I/O scheduler as it's deemed the most |
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>> > > reliable, but this has shown up with the default anticipatory I/O scheduler |
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>> > > as well. |
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>> > > |
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>> > > The only common factor seems to be that they are all plugged into a |
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>> > > questionable HP Procurve switch that we've been contemplating replacing. |
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>> > > Would that simply be wasting our time (I don't think a buggy switch should be |
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>> > > able to lock up boxes...)? Any recommendations for what to investigate at |
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>> > > this point? |
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>> > > |
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>> > > Cheers, |
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>> > |
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>> |
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>> -- |
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>> gentoo-server@g.o mailing list |
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>> |
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>> |
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>> |
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-- |
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