Shulou(Shulou.com)06/01 Report--

How to use OpenStack CLI, I believe that many inexperienced people do not know what to do, so this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

This section first discusses the image delete operation, then introduces how to use OpenStack CLI, and finally discusses how to Troubleshoot.

Web UI Delete image

After logging in to admin, Project-> Compute-> Images

Select the image with the format ARI and AKI in the list, and click

Click

Confirm deletion

The operation is successful

CLI Delete image

Set environment variabl

Query existing image

Delete image

How to use OpenStack CLI

OpenStack services have their own CLI. The command is easy to remember, which is the name of the service, for example, Glance is glance,Nova or nova.

But Keystone is special, and now openstack is used instead of the old keystone command. For example, to query the list of users, if you use keystone user-list

It will indicate that keystone is already deprecated. Replace with the openstack command

Although the commands used by different services are different, these commands are used in a very similar way.

1. Before you execute the command, you need to set the environment variable.

These variables include user name, Project, password, etc. If not set, the relevant command line parameters must be set every time the command is executed

two。 The commands of each service have the operations of adding, deleting, changing and checking.

Its format is

CMD-create [parm1] [parm2]...

CMD-delete [parm]

CMD-update [parm1] [parm2]...

CMD-list

CMD-show [parm]

For example, if glance manages image, then: CMD is glance;obj and image is the corresponding command.

Glance image-create

Glance image-delete

Glance image-update

Glance image-list

Glance image-show

For example, if neutron manages networks and subnets, then: CMD is neutron;obj, which is the command corresponding to net and subnet.

Network related operation

Neutron net-create

Neutron net-delete

Neutron net-update

Neutron net-list

Neutron net-show

Subnet related operations

Neutron subnet-create

Neutron subnet-delete

Neutron subnet-update

Neutron subnet-list

Neutron subnet-show

Some commands can be omitted. For example, the operations under nova are all for instance.

Nova boot

Nova delete

Nova list

Nova show

3. Every object has an ID

Delete,show and other operations all take ID as a parameter, such as

4. You can use help to view the usage of commands

In addition to operations such as delete,show that require only one parameter ID, other operations may require more parameters. Use help to view the required parameters in the format

CMD help [SUB-CMD]

For example, check what SUB-CMD are available in glance.

View the usage of glance image-update

How to Troubleshooting

OpenStack troubleshoots problems mainly through logs, and Service has its own separate log. Glance has two main logs, glance_api.log and glance_registry.log, which are stored in the / var/log/apache2/ directory.

Devstack's screen window has opened these two logs for us to view directly.

The g-api window displays the glance-api log, records the REST API calls, the g-reg window displays the glance-registry log, records the process of the Glance service processing the request and the database operation

If you need the most detailed log information, you can turn on the debug option in / etc/glance/*.conf. Devstack has debug turned on by default.

In a non-devstack installation, the logs are in the / var/log/glance/ directory.

After reading the above, have you mastered how to use OpenStack CLI? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.