66 lines
2.7 KiB
ReStructuredText
66 lines
2.7 KiB
ReStructuredText
Offline Installation
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--------------------
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The ansible scripts that compose Bifrost download and install
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software via a number of means, which generally assumes connectivity
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to the internet. However, it is possible to use Bifrost without external
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connectivity.
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If you want or need to install Bifrost without having a dependency on
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a connection to the internet, there are a number of steps that you will
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need to follow (many of which may have already been done in your
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environment anyway).
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Those steps can be broken down into two general categories; the first being
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steps that need to be done in your inventory file, and the second being
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steps that need to be done on your target host outside of Ansible.
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Ansible Specific Steps
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^^^^^^^^^^^^^^^^^^^^^^
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The script ``scripts/env-setup.sh`` will do a ``git clone`` to create
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``/opt/stack/ansible``, if it doesn't already exist. You can use the
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environment variables ``ANSIBLE_GIT_URL`` and ``ANSIBLE_GIT_BRANCH``
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to override the source URL and the branch name to pull from.
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Ansible uses Git submodules, which means if you are cloning from
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anything other than the canonical location (GitHub), you'll need
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to commit a patched ``.gitmodules`` to that repo so that submodules
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are also cloned from an alternate location - otherwise, the submodules
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will still try to clone from GitHub.
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Bifrost Specific Steps
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^^^^^^^^^^^^^^^^^^^^^^
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As a general rule, any URL referenced by Bifrost scripts is configured in a
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``playbook/roles/<role>/defaults/main.yml`` file, which means that all of
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those can be redirected to point to a local copy by creating a file named
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``playbooks/host_vars/<hostname>.yml`` and redirecting the appropriate
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variables.
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As an example, the yaml file's contents may look like something like
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this.
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.. code-block:: yaml
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ipa_kernel_upstream_url: file:///vagrant/ipa-centos8-master.kernel
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ipa_ramdisk_upstream_url: file:///vagrant/ipa-centos8-master.initramfs
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cirros_deploy_image_upstream_url: file:///vagrant/cirros-0.4.0-x86_64-disk.img
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dib_git_url: file:///vagrant/git/diskimage-builder
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ironicclient_git_url: file:///vagrant/git/python-ironicclient
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ironic_git_url: file:///vagrant/git/ironic
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If this list becomes out of date, it's simple enough to find the things that
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need to be fixed by looking for any URLs in the
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``playbook/roles/<role>/defaults/main.yml`` files, as noted above.
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External Steps
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^^^^^^^^^^^^^^
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Bifrost doesn't attempt to configure ``apt``, ``yum``, or ``pip``,
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so if you are working in an offline mode, you'll need to make sure
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those work independently.
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``pip`` in particular will be sensitive; Bifrost tends to use the most recent
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version of python modules, so you'll want to make sure your cache isn't stale.
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