2bfb9144f2
Puppetmaster bringup will often have the wrong hostname in a cloud (e.g. a uuid or the shortname given to nova). But if it's wrong the puppetmaster CA created by the puppetmaster module will be broken. Additional nodes can have this handled by automation, but the puppetmaster is special - this is part of the bootstrap process. Change-Id: I8e0e2ea4a5d27fb248b88d6be57abb171d81f13f
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144 lines
4.7 KiB
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:title: Puppet Master
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.. _puppet-master:
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Puppet Master
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#############
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Puppet agent is a mechanism use to pull puppet manifests and configuration
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from a centralized master. This means there is only one place that needs to
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hold secure information such as passwords, and only one location for the git
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repo holding the modules.
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At a Glance
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===========
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:Hosts:
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* ci-puppetmaster.openstack.org
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* http://puppet-dashboard.openstack.org:3000/
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:Puppet:
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* :file:`modules/openstack_project/manifests/puppetmaster.pp`
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:Projects:
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* https://puppetlabs.com/
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:Bugs:
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* http://bugs.launchpad.net/openstack-ci
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* http://projects.puppetlabs.com/
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:Resources:
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* `Puppet Language Reference <http://docs.puppetlabs.com/references/2.7.latest/type.html>`_
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Puppet Master
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-------------
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The puppet master is setup using a combination of Apache and mod passenger to
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ship the data to the clients.
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The cron jobs, current configuration files and more can be done with ``puppet
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apply`` but first some bootstrapping needs to be done.
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First want to install these from puppetlabs' apt repo. We have not yet migrated
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to puppet 3, so we pin puppet to 2.x. There is a script in the root of the
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config repository that will setup appropriate pinning and install the puppet
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client. After that installing the puppetmaster and hiera (used to maintain
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secrets on the puppet master).
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Please note: Fedora F19 and Ubuntu Raring and above cannot successfully run an
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OpenStack-CI puppetmaster due to new Ruby and older Puppet not being
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compatible, so be sure to use an older release - e.g. Ubuntu Precise.
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.. code-block:: bash
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sudo su -
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git clone https://git.openstack.org/openstack-infra/config /opt/config/production
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/opt/config/production/install_puppet.sh
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apt-get install puppetmaster-passenger hiera hiera-puppet
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Finally, install the modules, fix your hostname and use ``puppet apply`` to
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finish configuration:
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.. code-block:: bash
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bash /opt/config/production/install_modules.sh
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echo $REAL_HOSTNAME > /etc/hostname
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service hostname restart
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puppet apply --modulepath='/opt/config/production/modules:/etc/puppet/modules' -e 'include openstack_project::puppetmaster'
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Note: Hiera uses a systemwide configuration file in ``/etc/puppet/hiera.yaml``
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and this setup supports multiple configurations. The two sets of environments
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that OpenStack Infrastructure uses are ``production`` and ``development``.
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``production`` is the default is and the environment used when nothing else is
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specified. Then the configuration needs to be placed into common.yaml in
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``/etc/puppet/hieradata/production`` and ``/etc/puppet/hieradata/development``.
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The values are simple key-value pairs in yaml format. The keys needed are the
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keys referenced in your ``site.pp``, their values are typically obvious
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(strings, lists of strings). ``/etc/puppet/hieradata/`` and below should be
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owned by ``puppet:puppet`` and have mode ``0711``. The actual ``common.yaml``
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file should have mode 0600.
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Adding a node
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-------------
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On the new server connecting (for example, review.openstack.org) to the puppet master:
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.. code-block:: bash
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sudo apt-get install puppet
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Then edit the ``/etc/default/puppet`` file to change the start variable:
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.. code-block:: ini
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# Start puppet on boot?
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START=yes
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The node then needs to be configured to set a fixed hostname and the hostname
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of the puppet master with the following additions to ``/etc/puppet/puppet.conf``:
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.. code-block:: ini
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[main]
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server=ci-puppetmaster.openstack.org
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certname=review.openstack.org
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The cert signing process needs to be started with:
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.. code-block:: bash
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sudo puppet agent --test
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This will make a request to the puppet master to have its SSL cert signed.
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On the puppet master:
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.. code-block:: bash
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sudo puppet cert list
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You should get a list of entries similar to the one below::
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review.openstack.org (44:18:BB:DF:08:50:62:70:17:07:82:1F:D5:70:0E:BF)
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If you see the new node there you can sign its cert on the puppet master with:
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.. code-block:: bash
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sudo puppet cert sign review.openstack.org
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Finally on the puppet agent you need to start the agent daemon:
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.. code-block:: bash
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sudo service puppet start
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Now that it is signed the puppet agent will execute any instructions for its
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node on the next run (default is every 30 minutes). You can trigger this
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earlier by restarting the puppet service on the agent node.
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Important Notes
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---------------
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#. Make sure the site manifest **does not** include the puppet cron job, this
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conflicts with puppet master and can cause issues. The initial puppet run
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that create users should be done using the puppet agent configuration above.
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#. If you do not see the cert in the master's cert list the agent's
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``/var/log/syslog`` should have an entry showing you why.
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