Hi,
I’d like to add a functionality to an existing charm to mount an NFS share from an external source (outside of Juju).
I see that charmhelpers has a fstab module (https://github.com/juju/charm-helpers/blob/master/charmhelpers/core/fstab.py). I’m thinking of using that to mount my NFS share but I’m having trouble finding the documentation for the right way to use these charmhelpers.
https://github.com/juju/charm-helpers says that “The full documentation is available online at: https://charm-helpers.readthedocs.io/” but on that docs page I see the following:
Creating a New Charm
$ cd ~ $ mkdirs -p charms/precise $ cd charms/precise $ charm create -t python mycharm INFO: Generating template for mycharm in ./mycharm INFO: No mycharm in apt cache; creating an empty charm instead. Symlink all hooks to one python source file? [yN] y INFO:root:Loading charm helper config from charm-helpers.yaml. INFO:root:Checking out lp:charm-helpers to /tmp/tmpPAqUyN/charm-helpers. Branched 160 revisions. INFO:root:Syncing directory: /tmp/tmpPAqUyN/charm-helpers/charmhelpers/core -> lib/charmhelpers/core. INFO:root:Adding missing __init__.py: lib/charmhelpers/__init__.pyLet’s see what our new charm looks like:
$ tree mycharm/ mycharm/ ├── charm-helpers.yaml ├── config.yaml ├── hooks │ ├── config-changed -> hooks.py │ ├── hooks.py │ ├── install -> hooks.py │ ├── start -> hooks.py │ ├── stop -> hooks.py │ └── upgrade-charm -> hooks.py ├── icon.svg ├── lib │ └── charmhelpers │ ├── core │ │ ├── fstab.py │ │ ├── hookenv.py │ │ ├── host.py │ │ └── __init__.py │ └── __init__.py ├── metadata.yaml ├── README.ex ├── revision ├── scripts │ └── charm_helpers_sync.py └── tests ├── 00-setup └── 10-deploy 6 directories, 20 files
When I do charm create -t python mycharm, all I get is:
INFO: Generating charm for mycharm in ./mycharm
INFO: No mycharm in apt cache; creating an empty charm instead.
And when I do tree, I get:
.
├── config.yaml
├── hooks
│ ├── actions.py
│ ├── config-changed
│ ├── install
│ ├── services.py
│ ├── setup.py
│ ├── start
│ ├── stop
│ └── upgrade-charm
├── icon.svg
├── metadata.yaml
├── README.example
├── templates
│ └── upstart.conf
├── tests
│ ├── 00-setup
│ └── 10-deploy
└── unit_tests
└── test_actions.py4 directories, 16 files
What’s the right starting point for getting started with charmhelpers and use the fstab module?
Thanks!