A simple yet powerful CloudStack API client for Python and the command-line.
Project description
A simple, yet powerful CloudStack API client for python and the command-line.
Python 2.6+ and 3.3+ support.
All present and future CloudStack API calls and parameters are supported.
Syntax highlight in the command-line client if Pygments is installed.
BSD license.
Installation
pip install cs
Usage
In Python:
from cs import CloudStack
cs = CloudStack(endpoint='https://api.exoscale.ch/compute',
key='cloudstack api key',
secret='cloudstack api secret')
vms = cs.listVirtualMachines()
cs.createSecurityGroup(name='web', description='HTTP traffic')
>From the command-line, this requires some configuration:
cat $HOME/.cloudstack.ini [cloudstack] endpoint = https://api.exoscale.ch/compute key = cloudstack api key secret = cloudstack api secret # Optional ca authority certificate verify = /path/to/certs/exoscale_ca.crt # Optional client PEM certificate cert = /path/to/client_exoscale.pem
Then:
$ cs listVirtualMachines
{
"count": 1,
"virtualmachine": [
{
"account": "...",
...
}
]
}
$ cs authorizeSecurityGroupIngress \
cidrlist="0.0.0.0/0" endport=443 startport=443 \
securitygroupname="blah blah" protocol=tcp
The command-line client polls when async results are returned. To disable polling, use the --async flag.
To find the list CloudStack API calls go to http://cloudstack.apache.org/api.html
Configuration
Configuration is read from several locations, in the following order:
The CLOUDSTACK_ENDPOINT, CLOUDSTACK_KEY, CLOUDSTACK_SECRET and CLOUDSTACK_METHOD environment variables,
A CLOUDSTACK_CONFIG environment variable pointing to an .ini file,
A CLOUDSTACK_VERIFY (optional) environment variable pointing to a CA authority cert file,
A CLOUDSTACK_CERT (optional) environment variable pointing to a client PEM cert file,
A cloudstack.ini file in the current working directory,
A .cloudstack.ini file in the home directory.
To use that configuration scheme from your Python code:
from cs import CloudStack, read_config cs = CloudStack(**read_config())
Note that read_config() can raise SystemExit if no configuration is found.
CLOUDSTACK_METHOD or the method entry in the configuration file can be used to change the HTTP verb used to make CloudStack requests. By default, requests are made with the GET method but CloudStack supports POST requests. POST can be useful to overcome some length limits in the CloudStack API.
CLOUDSTACK_TIMEOUT or the timeout entry in the configuration file can be used to change the HTTP timeout when making CloudStack requests (in seconds). The default value is 10.
Multiple credentials can be set in .cloudstack.ini. This allows selecting the credentials or endpoint to use with a command-line flag:
cat $HOME/.cloudstack.ini [cloudstack] endpoint = https://some-host/api/compute key = api key secret = api secret [exoscale] endpoint = https://api.exoscale.ch/compute key = api key secret = api secret
Usage:
$ cs listVirtualMachines --region=exoscale
Optionally CLOUDSTACK_REGION can be used to overwrite the default region cloudstack.
Pagination
CloudStack paginates requests. cs is able to abstract away the pagination logic to allow fetching large result sets in one go. This is done with the fetch_list parameter:
$ cs listVirtualMachines fetch_list=true
Or in Python:
cs.listVirtualMachines(fetch_list=True)
Links
CloudStack API: http://cloudstack.apache.org/api.html
Example of use: Get Started with the exoscale API client
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