How does it work?
On vagrant-cachier's "jargon", cached packages are kept in cache buckets.
Those buckets are basically directories that are shared between the host machine
and VMs that are kept around between
vagrant destroys. Each bucket (or synced
folder if you prefer) is meant to cache specific types of packages, like apt's
.debs or RubyGems
.gems. Please have a look at the
"Available Buckets" menu above for more information on each bucket.
Regarding configurations, right now the plugin does not make any assumptions for
you and you have to configure things properly from your
Vagrantfile. In other
words, the plugin is disabled by default.
Cache buckets will always be available from
/tmp/vagrant-cache on your guest and
the appropriate folders will get symlinked to the right path after the machine is
up but right before it gets provisioned. We could potentially do it on one go
and share bucket's folders directly to the right path if we were only using VirtualBox
because it shares folders after booting the machine but the LXC provider does that
as part of the boot process (synced folders are actually
and as of now we are not able to get some information that this plugin requires
about the guest machine / container before it is actually up and running.
Under the hood, the plugin will hook into Vagrant in order to set things up for each
configured cache bucket before and after running each defined provisioner. Before
halting the machine, it will also revert the changes required to set things up by
hooking into calls to
Vagrant::Builtin::GracefulHalt so that you can repackage
the machine for others to use without requiring users to install the plugin as well.
Please keep in mind that this plugin won't do magic, if you are compiling things during provisioning or manually downloading packages outside of a bucket you won't see that much of improvement.