First steps with DigitalOcean’s Managed Kubernetes service

A few days ago DigitalOcean released their Managed Kubernetes service, as I had a little time this afternoon I decided to give it a spin. Each of the public clouds has a Kubernetes service now, I covered these in the third edition of Mastering Docker. The general gist of the chapter was that both the Microsoft Azure and Google Cloud offerings were both excellent. However, the Amazon Web Services offering was an over-complicated mess....

December 16, 2018 · 5 min · Russ Mckendrick

Flocker on CentOS 7

I have been reading about Flocker for quite a while and it’s been something I have been meaning to look at since the introduction of plugins back in the Docker 1.7 release. But I have been busy looking at other parts of Docker. Since I had a few hours this weekend I thought it was about time and had a play. ClusterHQ describes Flocker as; Flocker is an open-source container data volume manager for your Dockerized application....

December 13, 2015 · 10 min · Russ Mckendrick

Digital Ocean Bootstrap

As I have mentioned a few times on this blog I tend to use DigtialOcean to spin up servers for testing and to host some of my projects. I also still use CentOS 7 as my preferred OS. Each time I boot a droplet I run few a couple of tasks to get the server how I prefer it. Run a yum update Enable swap Install & configure Fail2Ban Enable firewalld Install vim-enhanced, deltarpm & enable EPEL As I am lazy and sometimes re-launch instances several times when working on a project I decided to write a quick script to do the above so I don’t have to....

June 28, 2015 · 1 min · Russ Mckendrick

Migration of Server & Swap Space

I noticed yesterday that my DigitalOcean monthly spend was a little more than I was expecting, turns out I have launched the wrong instance size when I last rebuilt my machine, so to save myself a few dollars a month I migrated the instance to a fresh server with a lower spec. By default DigitalOcean servers do not come with swap enabled, because of this you run the risk of oomkiller killing processes to try and keep the server accessible....

March 8, 2015 · 2 min · Russ Mckendrick

Very basic CoreOS

On Friday DigitalOcean announced the availability of CoreOS on their platform. CoreOS is a very optimized Operating System which is designed to just run containers. While it has some very powerful clustering elements made up of …. etcd fleet systemmd …. I decided my first step should be to do the opposite of every blog post I have read about CoreOS and run a single instance with the tools I am used to using....

September 7, 2014 · 2 min · Russ Mckendrick

First play with CentOS 7.0

As I didn’t get chance to have a play with the pre-release CentOS 7.0 builds I decided to wait until DigitalOcean lauched their image which they did just in time for the weekend. Check the IP Address First thing I did was type in ifconfig and got ….. [[email protected] ~]# ifconfig -bash: ifconfig: command not found ….. not a good start, have dabbled with a Fedora when I installed OpenShift I remembered about the ip command …....

July 12, 2014 · 3 min · Russ Mckendrick