How often do you reboot your domino servers?
Jack had a good discussion going a while back related to disk space on Domino servers and what amount should be kept free. (btw - 30% gets my vote). I conduct a lot of Domino audits for a lot of sites, and I have a question I would like to put to the floor. This is a question for W32 platform people guys (I know.... "I run an iSeries and haven't rebooted my servers if 28 years" etc... its great but I want to concentrate on windows only at the moment). Considering your production servers, how often do you recommend a full reboot of the box to reclaim bled memory and clear the OS cache etc. I try to recommend a full reboot at least once every 2 months. This can be scheduled to happen at night, and if you run a cluster environment, just alternate the night the server reboots and there is no downtime. That being said, I have seen one production server run for over a year (yes a year) without a reboot on the windows OS. Do you have any standards for server reboots or is it a "reboot when needed" environment for you?
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Comments
My production iSeries hasn't been shutdown since November 11, 2005.
Actually, Domino for iSeries support has recommended that iSeries systems be restarted every couple of months to apply fixes. We need to load some on ours.
Posted by Chris Whisonant At 20:37:17 On 01/03/2006 | - Website - |
Don't feel that this is a bad thing. I know other current application servers that have to be rebooted nightly on W32/W64 even! (not domino)
Posted by Paul Mooney At 19:23:39 On 01/03/2006 | - Website - |
Posted by Jamie At 18:07:05 On 01/03/2006 | - Website - |
Back in the day, there was a weekly reboot scheduled for our servers when they were on NT4. It ran at around 0300 or so...just the reboot.exe from the NT Resource Kit. There was some instability in the system back then and since it seemed to go away with a weekly reboot, that's all that was done about it.
Eventually, the instability we were experiencing stopped. I'd like to take credit for it, but I can't. But we switched to rebooting as needed since then.
I'll agree with Mrs D on her point about cold booting too. I don't reboot my windows servers unattended anymore. For some reason, in my environment when I scheduled reboots with reboot.exe, SMS would occasionally hang up on the shut down after Domino quit. So I'd get down-server calls the morning after reboot because they didn't shut down all the way. Again, this was in the NT4 days. Haven't tried it in years...our window for scheduled maintenance starts at 1700.
Posted by Scott Gentzen At 11:58:27 On 02/03/2006 | - Website - |
Posted by Jack Dausman At 18:09:47 On 01/03/2006 | - Website - |
~2500 users, no Notes clients...only web applications. Several servers, all Win2k, most partitioned (2-4 partitions on a box).
MS does their Patch Tuesday routine every month or so. Usually there's at least one patch every other Patch Tuesday that we either decide needs to go on the servers, or some other higher authority decides that we need it.
It's not often though that I come across an issue on my servers where I think "it's been up too long, needs a reboot." Maybe we're not generating as much traffic as I thought. One of my lower traffic servers I've had up for almost 100 days before rebooting.
I saw one server a couple years ago that was running 4.6 on NT4 and had been up for something like 380 days. Not long after that, I think they just took it offline altogether. Maybe someone just forgot it was out there.
Posted by Scott Gentzen At 23:08:23 On 01/03/2006 | - Website - |
But , it needs to be a cold boot. And if you are doing a cold boot it is advisable to monitor it.
Posted by Mrs D At 23:35:24 On 01/03/2006 | - Website - |