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Yesterday I was in the data center reinstalling the Server Host system. I successfully (or not) switched from XEN virtualization to KVM. The reason behind this change (since I’m running XEN for over 4 years now) was that KVM seems to be the future of linux based virtualization and I tried to get rid of various XEN related kernel crashes I already reported earlier last year.
In order to prepare the migration I switched all existing guests from XEN-PVM (paravirtualized) to XEN-HVM (hardware virtualized) and prepared the new configuration files for libvirt. In the datacenter I replaced the network uplink with my notebook to present you a temporary “maintenance page”. The installation of Debian 6 as host system went smooth and after some typo fixing in my libvirt xml files the I could boot the evemaps guest without problems. After a short verification that everything was running I switched the cables and DOTLAN was back live after exactly 1 hour downtime. Everything was looking fine … until.
This night the server crashed again around 2am UTC without any reason, logfiles, etc. Likely some weird locking kernel panic who knows. The server was rebooted this morning directly after I woke up.
Hardware
The hardware DOTLAN EveMaps is running on is know over 4 years old (bought in February 2007)
- BOARD: Tyan Tomcat n3400b
- CPU: AMD Opteron 1216 (DualCore 2.4GHz)
- RAM: 8GB PC5300 DDR2, non-ecc (initial 4gb later 8gb)
- HDD: 2x 250gb + 2x 1TB
- CHASSIS: Chenbro RM217
After various problems and crashes last year (when assigning 2 cpus to a guest) I always tried to fix the problem on the software side. Switching from Debian to CentOS/RHEL Kernel and Xen Subsystem and now to Debian/KVM Solution. Even a running memtest last year didn’t showed any major problems but they’re still preset (even I lowered the crash risc by limiting the guests). Crashes on strange load situations, crashing guests and kernel panics rebooting the dom0 (host).
I order to continue to provide a stable and speedy service I decided it’s about ****ing time to upgrade the hardware. I really hope the hardware upgrade/change + combined processor switch helps.
I just ordered
- Intel Xeon E5620 (Quad Core, 2.4GHz)
- Supermicro Mainboard (integrated KVM!)
- 16GB Registered ECC RAM
to replace the outdated components. I’ll do the upgrade sometime in the next weeks.
Can I help?
Of course: If you like DOTLAN EveMaps please use the PayPal Donate option and help me to continue to provide this hopefully usefull service.
Wollari
Well that explains what was happening last night. I had complete faith that the site would be back up as soon as you noticed. keep up the good work bud.
I’m supporting this upgrade by getting people to donate to your cause Wollari.
Your a great guy and need this support!
Thanks for the time and effort you put in…
If you are reading these comments and haven’t donated then do so now every little helps!
Your friend and corp mate
Lasha
Hardly any donation would be more deserved than those made for the one-man-show creation you’re looking at right now.
He may not be the only one supporting the community with personal and financial involvement: others, like Chribba, are selfless and passionate just the same.
But you won’t find the same *polished* features elsewhere.
Yes, CCP, I’m looking at you. If you only would provide us with a product half as finished as Wollari does, EVE would be more popular than Facebook by now. 😛
I will donate as soon as I get home, or try to. I hate paypal!
I don’t even know where to post about this. Can’t find any contact info. But when using the ingame theme. the scroll wheel zooming is now disabled by default. Maybe its just me but its honestly the only reason i used that theme instead of the dark one (it always had it disabled by default).
Is there any way to make it remember that setting or maybe make the ingame theme zoom enabled by default again?
The best way to reach me Is of course email, evemail, my e-o feedback thread or this blog. I can remeber. Maybe I should fix this. And at the same time safe your settings as new feature.
I’ll put it on my notebook.
The best way to reach me Is of course email, evemail, my e-o feedback thread or this blog. I can remeber. Maybe I should fix this. And at the same time safe your settings as new feature.
I’ll put it on my notes
still having issues viewing the maps at the system level. Any ETOF on this issue?
Sadly that happend after the server crashed and i didn’t noticed it.
The new hardware is on my desk (complete this time). I’ll install it tomorrow/today