Entries from June 2011

Migrating a live webserver across datacenters(?)

Date June 29, 2011

Reddit user manueljs linked to the following German-language video of moving a server from one datacenter from one town to another…all without taking it down or removing its internet access: I don’t speak German, but fortunately for us anglophones, there is English closed-captioned text (if you click the [cc] button on the embedded video). OK, […]

Firefox EOL’s Itself

Date June 27, 2011

Computerworld is reporting some very disturbing news. Apparently, Firefox 4 (the browser they shipped 3 months ago) is being retired from security updates. According to Mozilla, version 4 of Firefox has reached the End of Life and they’re now instructing people to download Firefox 5. I have a better idea. If they’re going to EOL […]

Remedial Networking 101: Subnetting

Date June 24, 2011

A while ago, there was a question on the /r/sysadmin subreddit asking for help learning IPv4 subnetting (in IPv6, there isn’t any subnetting unless you’re a provider or a large enterprise. Your networks are /64.) While a lot of the replies were helpful, a disturbing number of sysadmins there expressed that they had no idea […]

Interesting new solution – Appliance-based VM replication to DR

Date June 23, 2011

Sorry for the alphabet soup in the title, but I tried to keep it short. I’m involved in Tech Field Day from time to time, and I follow the #techfieldday hash tag on twitter. Today, they tweeted about a new company, and I followed the link, and I found out that they’re doing something pretty […]

Columbus SysAdmin Appreciation Day Ideas

Date June 15, 2011

I know, SysAdmin Appreciation Day isn’t until the end of next month, but I’m giving myself some lead time because I don’t yet have a dedicated network of admins in Columbus like everyone in New York City (but we’re getting there!) So, to anyone who’s in Columbus or knows someone who is, here’s the plan: […]

Reminder: NYC LOPSA Tomorrow!

Date June 13, 2011

FYI, The NYC Chapter of LOPSA (mailing list here) is meeting tomorrow at 7pm at the offices of D.E. Shaw. I’m not going to be able to make it, with this whole being-in-Ohio thing, but you should go in my stead, because it sounds like a great meeting. Topic: Ganeti: Open source virtualization (like VMWare […]