by JoKeru

Remove all AWS default VPCs using CLI

It's a good DevOps practice to have all your active infrastructure under your total control. Amazon creates for you a default VPC in every region they have, even though you'd probably use only one (or two for disaster recovery). Since this VPC was not created by your code, you cannot …

Getting started with linkerd

linkerd is a transparent proxy that adds service discovery, routing, failure handling, and visibility to modern software applications

I will not go into details about this product, I was just curious to see it in action.

Running stuff these days is so easy:

# get root
$ sudo su -

# start docker
$ yum …

Better SSH access control

the only truly secure server is one that is powered off and stored in a concrete room with no doors or windows

SSH access to your instance is so last year, right now you just fire a new one and drop the old one. But if you insist in having …

It's time to drop WordPress, say hello to my Pelican

Short story

There is nothing more to say: WordPress is gone, Pelican is in.

Long story

Last year this wiki was running a self-hosted WordPress solution. But it got hacked.

I never got the time to investigate how it happened (even though I had the auto-update feature enabled) but it …

Google DNS Down - 18 March 2016

If you're using the Google DNSs and, you might have an issue and you don't know about it :)

Here is what happened:

  • I have some servers configured to use these DNSs (and I've been using them for ages now)
  • I have some …

Couchbase install error on OpenVZ

While trying to migrate an Infrastructure away from Amazon (their service is not at all that cheap) to a container based one @Wable (good offer and they "swear" they'll never over-commit), one of the components failed - it was a Couchbase server.

Let's follow the process (and the debug):

$ dpkg -i …

IPMI SOL on Debian

IPMI (Intelligent Platform Management Interface) provides out-of-band management and monitoring of servers (Supermicro X9SCL/X9SCM in my case). This is similar to Dell's DRAC or HP's iLO, but cheaper.

SOL (Serial over LAN) is a mechanism that enables the input and output of the serial port of a managed system …

Increase VM disk capacity

Ever needed a bigger disk (not for root) inside your Guest OS (powered by VMware)? Look no further, I have the answer.

You don't need to stop the guest, this operation is done on a running VM.

Login on you vCenter, edit the VM's settings, increase disk size to the …