Cerb4 On-Demand - Unplanned Partial Maintenance

Community, Pulse July 8th, 2008

posted by Jeff Standen

The RAID controller/storage on one of the Cerb4 On-Demand servers started throwing constant kernel panics this morning.  We decided to just quickly migrate the affected sites (about a dozen) to new hardware before we started our troubleshooting and hardware replacements.

As we decouple our On-Demand installations from specific hardware it will be increasingly common for IPs to change.  If you’re using a DNS “A” record to customize your domain, you should switch to a “CNAME” record that maps to your *.cerb4.com domain opposed to a specific IP.  That will transition cleanly as your site moves around on our network.  Feel free to drop us a note if you need help with that.

The downtime this morning for the affected sites was minimal but sporadic (due to reboots).  Everything should be moved over now (with the exception of a few historical attachments if your helpdesk is huge — those are still copying as I type this).

Hardware has no common courtesy ;) — but at least the Cerb4 design makes things easy to move around in minutes if the need arises.

-Jeff@WGM

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