WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

Those who regularly build and rebuild machines or virtual machines on a dhcp network will probably be faced with this quite often, this is due to the known fingerprint for the previous host being different to a new one which has aquired the same IP address.

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the ECDSA key sent by the remote host is c5:ab:00:3c:88:7e:18:8f:46:49:1d:af:f1:8b:4e:98. Please contact your system administrator. Add correct host key in /root/.ssh/known_hosts to get rid of this message. Offending ECDSA key in /root/.ssh/known_hosts:66 ECDSA host key for 192.168.1.165 has changed and you have requested strict checking. Host key verification failed.

The recent release of the Raspberry Pi 2 uses a newer version of the ARM architecture spec, the ARM Cortex-A7 uses ARMv7 whereas the previous model ARM11 uses ARMv6. The great thing about this is the majority of Linux distros already provide an Image for this architecture. More importantly, Fedora already have images.

There is a slight caveat to the above statement however, that being they won’t just work with the Pi 2. The process isn’t that difficult either just a few steps:

Monit is an application I’ve been meaning to setup for a while, I was first made aware of it from a chap I had the pleasure of talking to at OggCamp this year, he seemed to use it to the n’th degree to monitor files and services within docker containers to ensure a development environment was as it should be. This was far more than I really needed, but the monitoring of services definitely caught my attention so I set about installing and configuring. I was pleasantly surprised with the result, and how simple the whole process was.

I’ve been meaning to write this post for some time, but things have been a little hectic recently. That said I really wanted to write something, even if it is a little short, about Barcamp Manchester. The event took place over the weekend of 18th & 19th October and was just a fantastic weekend.

After a fairly decent break from the Barcamp scene, Manchester really came back and did it justice. Set in the fantastic SpacePort building on Lever street which is a meet and workspace, I arrived earlyish on the Saturday morning with fellow members of RossLUG. Carting in my bundle of swag I was shown my table in the main space and setup the Fedora table. As most will know I am a proud ambassador for the Fedora project and more proud of the fact we were able to sponsor the event.

I thought I’d finish off the year with a bit of reflection, overall it’s been a pretty good year in both camps of my life - the geek/tech and the family side. Obvious highs of the year include:

• Birth of my second child, Alfie.
• OggCamp 13
• LinuxCon Europe
• Barcamp Blackpool
• RossLUGs 3rd year - some fantastic meetings this year.

It certainly has been a full on year.

It’s been a really tech filled year, as since moving house last September I’ve had my own space for all my tech which is a real bonus. It’s allowed me to really get back into electronics with Arduino building the home automation system, the electric meter monitor (still to be finished) and more recently bringing a snowman christmas decoration back to life:

Whoa I’m getting a bit slow here!

After the full on weekend of OggCamp my marathon continued up in Edinburgh for LinuxCon Europe 2013. Unfortunately my plan of heading up straight from OggCamp was scuppered, but I set off first thing on Monday morning. I decided to stick with driving after toying with the idea of getting the train. Glad I did, the Edinburgh park and ride system is brilliant! Parked up at Sheriffhall which allowed me to stay up to 7 days, perfect.

Although it’s been over a week since I returned from both these events I thought I better put a little something up about them and the experiences I had there.

Unfortunately Oggcamp and LinuxCon followed each other directly this year, so it meant a lot of heaving about over the course of about a week. Here’s part 1 where I will detail my time at OggCamp.

The event I look forward to all year, took a little longer to arrive this year due to it being moved to October (Oggtober?), happened over the weekend of the 19th & 20th October and much fun was to be had. As being part of the crew last year was so much fun (and hard work) I couldn’t resist doing the same this year, although I was a part timer this year due to also running a Fedora stand and a stand for our LUG (RossLUG). I arrived on the Friday evening to the guffaw of an unexpected art exhibition going off in the lobby of the John Lennon Art and Design building at John Moores University, I say unexpected as it was exactly that. The exhibition, although the building was booked for over 6 months, was arranged the week previous and we couldn’t gain access to setup much on the Friday. Even when that finished the caretaker decided enough was enough and it was home time. So off I went to find Rita’s B&B at the other side of town. Lovely place, a bit dated but very homely and Rita was lovely, I described her to various folks as looking like the oracle from the Matrix (the first one not the second). Proper tea, coffee and biscuits on the bedside table too!

I wouldn’t normally write about this kind of move, but I’m in a position where I feel I have to. A little over a year ago I made a decision to move from Fedora to Ubuntu, it wasn’t a decision that was easy after all I have been using Fedora since its first release, and Red Hat since around version 5. Needless to say I was (and still am at heart) a die hard Red Hat fan. There seemed at the time to be a draw to Ubuntu, I was feeling a buzz around the community there that I wasn’t really seeing with Fedora (although I don’t think I was looking), a lot was going on around the Unity project - whether good or bad, it was still going on. So I jumped right in, installing the latest release 11.10 I think it was, joined the forums/wiki/launchpad etc and started filing bugs and generally making a nuisance of myself.

Here’s a (very) quick howto showing how to get GlusterFS up and running on Fedora. Its probably better situated on a distro like CentOS/RHEL, Ubuntu Server LTS or Debian stable but where’s the fun in knowing it won’t break? Most of these commands are transferrable to other distros though, its Fedora centric due to the use of yum, selinux and systemd (systemctl).

Pre-requisites: 2x (or more) servers running Fedora, I used 18 in this example but i’m sure it shouldn’t change a great deal for newer releases. If it does I’ll try update this doc. The idea behind this setup is to use 2 servers as hypervisors (KVM) and have local storage but reslience, I won’t be covering the virtualisation side, purely storage so VM’s will be adequate for this setup.