- Preparing for the Certified OpenStack Administrator Exam
- Matt Dorn
- 199字
- 2021-07-02 19:30:28
Python-openstackclient - the unified client
Because it was quite frustrating to remember commands for each separate client, the OpenStack community created a new OpenStack client called OSC (OpenStack Client) in 2013. The actual program is named python-openstackclient and available at http://github.com/openstack/python-openstackclient.
See Figure 1.6. python-openstackclient is a CLI client for OpenStack that brings all the traditional service-based clients into a single shell with a uniform command structure. It has a consistent and predictable format for all of its commands and takes the following form:
openstack [<global-options>] <object-1> <action> [<object-2>] [<command-arguments>]
For example, if you wanted to create a brand new Nova virtual machine instance, you could simply run:
$ openstack server create demo-instance1 --flavor m1.tiny --image cirros MyFirstInstance
Figure 1.6: python-openstackclient brings the traditional service-based clients into a single shell with a uniform command structure
You can also view help commands by running the following:
$ openstack help
The OpenStack clients will be discussed in more detail in upcoming chapters. As of September 2017, the COA exam tests on the Newton version of OpenStack. The exam will provide access to python-openstackclient and all service-based clients. A majority of the exam objectives can be completed with python-openstackclient, except where noted in this book.
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