Docker under Ubuntu 16.04, set up for direct-lvm storage

Recently i wanted to install docker on my ubuntu server the right way and use direct-lvm as storage layer for the devicemapper. For production environments this is the preferred method. Unfortunately it was not working out of the box, which is why i am writing this and maybe prevent some

XMPP, Prosody, TLS

My certificate expired recently and now i had to renew it. For this i tried to keep the private key and recreate a new certificate signing request. This can easily be done with

$ openssl req -new -key ssl.key -out ssl.csr

This generates a new signing request saved in

CentOS 7, Docker 1.10 and TLS

After my three month of absence from work the first thing i had to do on my work environment are ... updates, and as usual not everything worked flawlessly afterwards. One thing that broke was my docker service on my virtual testing sandbox based on CentOS7 as a VMWare Guest. This