134 lines
5.2 KiB
ReStructuredText
134 lines
5.2 KiB
ReStructuredText
=====================================================
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Set environment variables using the OpenStack RC file
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=====================================================
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To set the required environment variables for the OpenStack command-line
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clients, you must create an environment file called an OpenStack rc
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file, or ``openrc.sh`` file. If your OpenStack installation provides
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it, you can download the file from the OpenStack dashboard as an
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administrative user or any other user. This project-specific environment
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file contains the credentials that all OpenStack services use.
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When you source the file, environment variables are set for your current
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shell. The variables enable the OpenStack client commands to communicate
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with the OpenStack services that run in the cloud.
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.. note::
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Defining environment variables using an environment file is not a
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common practice on Microsoft Windows. Environment variables are
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usually defined in the :menuselection:`Advanced > System Properties`
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dialog box. One method for using these scripts as-is on Windows is
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to install `Git for Windows`_ and using Git Bash to source the environment
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variables and to run all CLI commands.
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.. _Git for Windows: https://git-for-windows.github.io/
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Download and source the OpenStack RC file
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#. Log in to the dashboard and from the drop-down list select the project
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for which you want to download the OpenStack RC file.
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#. On the :guilabel:`Project` tab, open the :guilabel:`Compute` tab and
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click :guilabel:`Access & Security`.
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#. On the :guilabel:`API Access` tab, click :guilabel:`Download OpenStack
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RC File` and save the file. The filename will be of the form
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``PROJECT-openrc.sh`` where ``PROJECT`` is the name of the project for
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which you downloaded the file.
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#. Copy the ``PROJECT-openrc.sh`` file to the computer from which you
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want to run OpenStack commands.
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For example, copy the file to the computer from which you want to upload
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an image with a ``glance`` client command.
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#. On any shell from which you want to run OpenStack commands, source the
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``PROJECT-openrc.sh`` file for the respective project.
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In the following example, the ``demo-openrc.sh`` file is sourced for
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the demo project:
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.. code-block:: console
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$ . demo-openrc.sh
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#. When you are prompted for an OpenStack password, enter the password for
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the user who downloaded the ``PROJECT-openrc.sh`` file.
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Create and source the OpenStack RC file
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Alternatively, you can create the ``PROJECT-openrc.sh`` file from
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scratch, if you cannot download the file from the dashboard.
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#. In a text editor, create a file named ``PROJECT-openrc.sh`` and add
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the following authentication information:
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.. code-block:: shell
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export OS_USERNAME=username
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export OS_PASSWORD=password
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export OS_TENANT_NAME=projectName
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export OS_AUTH_URL=https://identityHost:portNumber/v2.0
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# The following lines can be omitted
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export OS_TENANT_ID=tenantIDString
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export OS_REGION_NAME=regionName
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export OS_CACERT=/path/to/cacertFile
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#. On any shell from which you want to run OpenStack commands, source the
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``PROJECT-openrc.sh`` file for the respective project. In this
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example, you source the ``admin-openrc.sh`` file for the admin
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project:
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.. code-block:: console
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$ . admin-openrc.sh
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.. note::
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You are not prompted for the password with this method. The password
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lives in clear text format in the ``PROJECT-openrc.sh`` file.
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Restrict the permissions on this file to avoid security problems.
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You can also remove the ``OS_PASSWORD`` variable from the file, and
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use the :option:`--password` parameter with OpenStack client commands
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instead.
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.. note::
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You must set the ``OS_CACERT`` environment variable when using the
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https protocol in the ``OS_AUTH_URL`` environment setting because
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the verification process for the TLS (HTTPS) server certificate uses
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the one indicated in the environment. This certificate will be used
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when verifying the TLS (HTTPS) server certificate.
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Override environment variable values
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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When you run OpenStack client commands, you can override some
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environment variable settings by using the options that are listed at
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the end of the ``help`` output of the various client commands. For
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example, you can override the ``OS_PASSWORD`` setting in the
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``PROJECT-openrc.sh`` file by specifying a password on a
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:command:`openstack` command, as follows:
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.. code-block:: console
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$ openstack --os-password PASSWORD server list
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Where ``PASSWORD`` is your password.
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A user specifies their username and password credentials to interact
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with OpenStack, using any client command. These credentials can be
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specified using various mechanisms, namely, the environment variable
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or command-line argument. It is not safe to specify the password using
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either of these methods.
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For example, when you specify your password using the command-line
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client with the :option:`--os-password` argument, anyone with access to your
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computer can view it in plain text with the ``ps`` field.
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To avoid storing the password in plain text, you can prompt for the
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OpenStack password interactively.
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