Archives February 2014

Friday, 28th February 2014 - 18:33:47

PostgreSQL Logo

Just finished implementing a postgres backed powerdns system for internal dns including slony replication to a remote node which also has powerdns on it. I wrote some python which I hooked into the dhcpd commit, release and expire events that creates forward and reverse DNS entries for specific ranges of DHCP when leases are given and removes them when they expire or when they are released. The records are created with 60 second TTLs, so it seems to work pretty well. I got tired of editing bind files, now I can make DNS changes programatically or in a web GUI like poweradmin or something. There are also a bunch of new sub domains for lab, esx, vpn and proxmox hosts which are easier to manage now.

Thursday, 27th February 2014 - 20:21:51


Setting up current version of yum Postgres on CentOS machines...

rpm -Uvh</p>
<p>yum install postgresql93-server --enablerepo=pgdg93

Tuesday, 18th February 2014 - 14:48:34


These boxes now have Debian installed and are ready to go to the Datacentre. They are going to be part of my logging project and will be hosting an Elasticsearch cluster. These are nice machines, they should do well. Massive IO with all these disks, heaps of RAM and 16 cores to index all the things =)

Sunday, 9th February 2014 - 20:40:04

Memtest Bad Mobo

Looks like maybe heat was not the issue. Perhaps the mainboard is toast. During RAM testing with single sticks in combination with differing single slots I discovered that my RAM appears to be good, but for some unknown reason the board is trying to run DDR3 on the second slot at just 200MHz. The machine passes both sticks in the first slot and also does not exhibit any issues with just one stick of RAM in the first slot. Fun times =(

I was able to bandaid it while I wait to get a new board by underclocking the RAM substantially.

Sunday, 9th February 2014 - 14:19:01


Today my random eBay shunt box arrived. I spotted this one on eBay and bought it straight away. $15. I stripped it during lunch at work and kept only the voltage and current meters and some switches. Pretty good salvage for $15, considering a 300V volt meter and 30A current meter with it's shunt is probavly worth over $50.

Thursday, 6th February 2014 - 19:38:00


House server "brick" from atom with 1G to Xeon x3220 with 8G and a mobo that has SATA2. It now doesn't fall to it's knees when indexing things in elasticsearch or when you glance at it. I'm over my super low power phase, It needs to be able to get shit done...

Desktop to 8G RAM, it now plays BF4 much more reasonably.

Thursday, 6th February 2014 - 15:11:40


Today I spent a bit of time stripping down the TV boards that I salaved. I was looking for the flybacks (mainly), but also saved some high voltage transistors and diodes from the TV boards.

Tuesday, 4th February 2014 - 19:31:02


Terrible problems with the PC at the moment, it looks like heat is the issue. I tore everything down and cleaned it.

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