I setup MongoDB on my Amazon EC2 instance knowing full well that it would have to be backed up at some point. I also knew that by using XFS, I could take advantage of filesystem freezing in a similar fashion to LVM snapshots. I had remembered reading about backups on XFS with MySQL being done with ec2-consistent-snapshot. As with any piece of open source software, it just took a little tweaking to make it do what I wanted it to do.
Read the rest of this entry »
Erics Tech Blog Thoughts, musings, and other idealistic (sometimes useful) systems and development hoopla.
ec2-consistent-snapshot With Mongo
21 Apr 2011 — ericHash Autovivification in Ruby
6 Oct 2010 — ericOne of the features that I miss most from my Perl days (and to be honest, there isn’t a whole lot I miss from my Perl days) is autovivification. For more information on what it is, read the wikipedia page on it here.
Read the rest of this entry »
Using Unique Keys and Key Groups with Background Jobs in Gearman::Client
16 Jun 2010 — ericWhile diving into Gearman using Gearman::Client with MySQL and libdrizzle (I know, a mouthful), I ran into what I thought was a bug. I was only able to add 1 background job of any type at a particular time. The launchpad “bug note,” which is available in its entirety here, is rightly labeled won’t fix.
Read the rest of this entry »
Monitoring Services with Nagios::Plugin
7 Apr 2010 — ericThere are a lot of people who say, “if it isn’t monitored, then it isn’t a service.” The problem is that I don’t think enough people outside of the systems world believe that or even understand why its said. I think the primary offenders here are developers. It isn’t because they don’t know better, but typically developers just want to get the application up and running and then move on to developing the next thing. I also think there is some fault on the side of the administrators and the managers not insisting that part of the completed version of a project includes monitoring. But I don’t want to harp on this as much as I would like to show just how easy it is to compensate here by taking advantage of Nagios::Plugin.
Read the rest of this entry »
