Archive for the ‘howto’ Category

Late last year AWS launched Private DNS within Amazon VPC as part of their Route 53 service. This allows customers to create DNS entries that are only visible within a VPC (or group of VPCs). It’s also possible to have ‘split horizon’ DNS where servers inside a VPC get different answers to the same queries versus users […]


I’m a big fan of Github Gist, as it’s an excellent way to store fragments of code and config. Whatever I feel I can make public I do, and all of that stuff is easily searchable. A bunch of my gists are private, sometimes because they contain proprietary information, sometime because they’re for something so […]


Apache 2.4 changes things a lot – particularly around authentication and authorisation. I’m not the first to run into this issue, but I didn’t find a single straight answer online. So here goes (as root): If you want mpm-worker then do this instead:


Dockercon #2 is underway, version 1.7.0 of Docker was released at the end of last week, and lots of other new toys are being launched. Time for some upgrades. I got used to Docker always restarting containers when the daemon restarted, which included upgrades, but that behaviour went away around version 1.3.0 with the introduction […]


Last week Jérôme Petazzoni did an excellent (abbreviated) version of his ‘Deep dive into Docker storage drivers‘ at the London Docker Meetup. If I wasn’t convinced enough by that, Jessie Frazelle hammered home the same point in her QCon Presentation – AUFS is where it used to be at, and the new king is Overlay. I set about […]


TL;DR The Administrator setup for Google Apps Migration guide makes things look pretty straightforward, but it’s much, much more complicated. What should be just a couple of check boxes turned out to be a twisty turny journey through hidden menus littered across distant parts of the administrators console. Background The move from CohesiveFT to Cohesive Networks […]


I fell into a trap with my new Gen 8 Microservers like this: Install 60 day trial license for iLO Advanced Update BIOS date/time Find that trial license has now expired :( There really should be some sort of warning on the license page (and maybe also the serial/password tag) to say update your clock […]


The TP-Link WR-703N is a nice, hackable pocket WiFi router. I’ve seen them put to some interesting purposes, but I didn’t own one until yesterday when the kind folk at QCon Shanghai gave me one. I’m not a fan of factory TP-Link firmware at the best of times, but more so when it defaults to […]


Before writing my InfoQ story about Flocker I ran through my now usual process of getting my 3 tier demo[1] working on it (in addition to running through the getting started guide[2]). What I found is that Flocker doesn’t yet support multi container apps, but then it is only at release 0.1 (and proper multi […]


Just as I did with Fig I had a go at composing my three tier demo app with CenturyLink’s Panamax as I was writing my InfoQ piece on the launch. You can see the resulting todomvc.pmx template file in GitHub (and see that it’s very similar to my fig.yml), but it’s a visual tool, so let’s […]