This morning a discussion with a friend about various shells lead me to think it would be nice if my bash shell could tab complete hostnames from .ssh/known_hosts when I type ‘ssh <tab>’. I soon found this blog post which nicely documents how to do it. I made a directory in $HOME called .bash.completion and then added this to my .profile, which loops round any files in there, sourcing them individually:

if [ -d ${HOME}/.bash.completion ]; then
for file in ${HOME}/.bash.completion/* ; do
source $file
done
fi

All sorted. However, it wasn’t long before I discovered that ‘ssh user@<tab>’ doesnt work, I tend to use this quite a lot so wanted to see if I could fix up the bash function to support that use case. Bit of hacking around and I’ve got it working, the replacement ssh-completion file is shown below:

Add bash completion for ssh: it tries to complete the host to which you

want to connect from the list of the ones contained in ~/.ssh/known_hosts

__ssh_known_hosts() {
if [[ -f ~/.ssh/known_hosts ]]; then
cut -d " " -f1 ~/.ssh/known_hosts | cut -d "," -f1
fi
}
_ssh() {
local cur known_hosts
COMPREPLY=()
cur="${COMP_WORDS[COMP_CWORD]}"
known_hosts="$(__ssh_known_hosts)"
if [[ ! ${cur} == - ]] ; then
if [[ ${cur} == @ ]] ; then
COMPREPLY=( $(compgen -W "${known_hosts}" -P ${cur/@/}@ -- ${cur/*@/}) )
else
COMPREPLY=( $(compgen -W "${known_hosts}" -- ${cur}) )
fi
fi
return 0
}
complete -o bashdefault -o default -o nospace -F _ssh ssh 2>/dev/null \
|| complete -o default -o nospace -F _ssh ssh

• http://mesos.apache.org/

isolate like docker + service scheduling + health checking

Quelques best practice concernant les Dockerfile
On peut se servir de Docker de plein de façon différentes, alors quelques repères ça ne fait pas mal

vraiment bien expliqué!

via sebsauvage

Une surcouche à docker pour organiser ses containers et les liens qu'il y a entre eux

Deux patterns pour séparer les data du code dans puppet : "the params class pattern" et Hiera