Last Sunday we went to cycle in Old Delhi. It was wonderful to view the city in a fast paced experience.
Today we went to the Taj Mahal in Agra, after a 4 hour drive a breath taking view!
It is not only fun and sightseeing, I am here for training. During a normal weekday we are at the Koenig training center.
For my work I've been send to India to get training for 4 Microsoft certificates. I'd like to journal my experience.
Previous month, January, I graduated from university. Last Friday was the graduation ceremony and I was awarded the grade Bachelor of Science.
Previous Saturday I went with friends to a urbex trip in Belgium, we went to 3 different locations there. Urbex, Urban Exploration, visiting old locations, making photographs and having fun with friends. We visited a militairy fort, mine and railway station. We also did some cosplay photoshoots but that will get another post. Pictures below, Yours truly.
It's been more than 3 years ago that I did a post about visiting a datacenter. A lot has happened in between, moved 2 times from colocation provider and with that moving from datacenter. I started in July 2011 with hosting on my own hardware in Grafix NOC/DataHouse Capelle a/d IJsel, moved to Serverius DC1 in Dronten when my colocation provider (GetHost at the time) moved. After 3 years I moved to GyroCenter DC2 in Amsterdam with colocation Provider PCeXtreme and after 6 months I moved to ColoClue. I'm hosting now more than 2 years at Coloclue and I have to say, it was a good decision. Having servers in both locations, The Datacenter Group in Sloterdijk and euNetworks in Amstel, both in Amsterdam. Today I went to both datacenters for placing resque media in my servers, that I can boot to those media instead of the harddisks/SSDs and repair the servers or reinstall them remotely. Also 1 of the core routers in euNetworks gave problems, as a network engineer at Coloclue I swapped it with a spare server we had laying around. After the swap an another network engineer did the software part remotely. Pictures are below. Yours truly
Around a year ago I posted about routing my own prefixes to my machines with BGP, and running anycast. anycast is a routing architecture where your visitors are going to the (logical) nearest node of the cluster. I run a 2 node cluster, located in 2 different datacenters in Amsterdam in the Coloclue network. In this blogpost I'll dive deeper in how I configured it. There are propably more spaces with such tutorials, but I'd like to keep a record for my self :).
Yesterday I relocated my own server, Hayate, from The Datacenter Group (DCG) to euNetworks (EUN).
My second server Reinforce-Zwei was in February removed there, so I only had 2 servers remaining on my account (my own server and a server owned by the MangaKissa Foundation).
I can propably get my hands on a colocation spot in Tele2 Gyrocenter DC2 for Reinforce-Zwei, I relocated Hayate from DCG In Sloterdijk (north-west Amsterdam) to EUN in Amstel (south-east Amsterdam). This way I have geographic seperate infrastructure because I'd like to locate my second nameserver on Reinforce-Zwei, which currently recides in France. DC2 and DCG are both located in Sloterdijk.
DCG and EUN are 10KM removed from each other, so with approval from MangaKissa I setup a daily backup job that transfers each others data to the other server. In case of fire and/or physical damage that there is still a copy left of our data.
For almost a year my server is colocated at the non-profit association ColoClue. I had my own vlan with my own ip space and it worked well. I have also colocated the server of a friend of my, in the same vlan/ip space.
Previous weekend I colocated my second server in an another datacenter used by ColoClue, now it becomes a little bit tricky. At ColoClue lans only exists in 1 location and do not extend to the other. With my IP space in 1 location I had to reinvent my own network. What made it complicater was that I want to run my systems on both servers at the same time, which is anycast.
There is a wonderfull solution that can be used, which is use network protocols such as BGP. Per server I announce with BGP to the ColoClue routers which IP addresses of my range I want to terminate at that server. Since you can see this, you can conclude it works like a charm.