Manage a motley crew of machines

I've got a handful of machines around the house, each of which does something different. Some of them run docker SSH servers, so I'd like to have my .ssh/config updated automatically. motley is a bash DSL that makes it easy to do host-specific configuration.

Usage

First write a Motfile, which is a bash script that calls into motley functions.

# Define the motley crew; this needs to happen first
machine foo  alias vfoo=10.8.0.40
machine bar  alias vbar=10.8.0.44
machine $ec2 alias ec2

# Add entries to ~/.bash_aliases to cd into these remote locations
# (You need https://github.com/spencertipping/cd for this to work)
foo sshfs f1:/mnt/vol1 f2:/mnt/vol2
bar sshfs b:/mnt/disk
ec2 sshfs e:/home/me

# Machine-specific bash aliases
foo alias vpn zerovpn $vfoo -i ~/.ssh/vpn-key -p 2222 vpn@$ec2
bar alias vpn zerovpn $vbar -i ~/.ssh/vpn-key -p 2222 vpn@$ec2

# Tell foo how to build the spiff-o-matic:latest docker image
foo docker_source ~/spiff-o-matic spiff-o-matic:latest

# A bunch of containers from the image
for i in `seq 8`; do
  # Tell host "foo" how to spin up the container
  foo docker spiff$i spiff-o-matic:latest -p $((2421 + i)):22 -v /mnt

  # Add entries to ~/.ssh/config and ~/.bash_aliases for connection access
  foo ssh spiff$i -p $((2421 + i))                  # alias spiff$i=...
  spiff$i xpra Spiff$i :100 --no-keyboard-sync      # alias Spiff$i=...
done

Now use the motfile:

$ motley conf           # update ~/.bash_aliases and ~/.ssh/config
$ motley dbuild         # build docker images (see motley -h docker)
$ motley gpull          # pull all git repos (see motley -h git)
$ motley drun           # create docker containers

$ motley -h
motley usage:
  motley [-f /path/to/Motfile] mode [args...]
  motley -h [topic]

where modes are
- modes
- modules
- machines
- ls
- conf
- dbuild
- dpull
- drun
- drm
- gpull

help topics (motley -h topic):
- confedit
- crontab
- docker
- git
- interval
- machine_alias
- machine_tag
- ssh
- sshfs
- templates
- xpra
- zerovpn