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Author: Shintaro Katayama

python-shka-gadgets-openstackclient

This is a plugin of OpenStackClient (a.k.a. OSC) to make a single and simple virtual machine handy. In a typical use-case, the virtual machine (names “vanilla” here) given a floating IP address is created and used interactively. Sometimes the vanilla would be shelved; the floating IP address and the security rules are taken away when it is shelved, and these are given again when it is unshelved. After the interactive tasks, the given resources and the images would be cleaned out. The “vanilla” plugin simplifies such resource management in the project work.

Getting Started

sshfs and curl are prerequisites, and this plugin can be installed from PyPI using pip. It will install also a minimal OSC (=python-openstackclient) for the “vanilla” server management.

Example

python3 -m venv venv3
. ./venv3/bin/activate
pip3 install python-shka-gadgets-openstackclient
. ./openrc.sh

The openrc.sh here is a script for OSC environment, which you can download from the OpenStack dashboard of your project. The script will ask a password of the project.

openstack vanilla create --flavor standard.tiny --key-name mykey --image Ubuntu-18.04 --login ubuntu test

It creates a vanilla server named test on standard.tiny flavor from the Ubuntu 18.04 image. The specified key pair must be registered already. It gives a floating IP address to the vanilla and prepares a security group to login via ssh. And, in this case, the home directory of user ubuntu is accessible from ./vanilla via sshfs.

openstack server ssh --login ubuntu test

You can login to test as avobe if the login name is ubuntu.

openstack vanilla shelve test

It shelves test - It’s good when you will leave the project temporarily. The floating IP address and the security group is taken away. The old image used for the previous unshelve is removed. The ./vanilla folder would be unmounted.

openstack vanilla unshelve --login ubuntu test

You can unshelve test when you restart the project. The floating IP address and the security group are configured again. The ./vanilla folder would be mounted again.

openstack vanilla resize --flavor standard.xxlarge --login ubuntu test

You can resize test when you need more power, if the project supports it. The ./vanilla folder would be mounted again.

openstack vanilla delete test

After the project you can remove test completely.

There are more subcommands and the options of each subcommand. --help option will show them. For example,

$ openstack vanilla --help
Command "vanilla" matches:
  vanilla allow me
  vanilla create
  vanilla delete
  vanilla deny us
  vanilla give ip
  vanilla mount
  vanilla resize
  vanilla shelve
  vanilla show id
  vanilla show ip
  vanilla show my ip
  vanilla show status
  vanilla take ip
  vanilla unmount
  vanilla unshelve
  vanilla wait sshd
$ openstack vanilla create --help
usage: openstack vanilla create [-h] [--add-port <port>] --flavor <flavor>
                            --login <login-name> [--mount <mount-point>]
                            --key-name <key-name> --image <image>
                            [--volume <volume>]
                            <server>

Create a vanilla server.

positional arguments:
  <server>              Server (name or ID)

optional arguments:
  -h, --help            show this help message and exit
  --add-port <port>     Destination port (allow multiple times, default: [22])
  --flavor <flavor>     Create with this flavor (name or ID)
  --login <login-name>  Login name for sshfs mount (ssh -l option)
  --mount <mount-point>
                    Directory of the vanilla server to mount (default: ~)
  --key-name <key-name>
                    Keypair to inject into this server (optional
                    extension)
  --image <image>       Create server boot disk from this image (name or ID)
  --volume <volume>     Volume (size in GB for new or ID to mount)

This command is provided by the python-shka-gadgets-openstackclient plugin.
$

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