.. Copyright 2014 tsuru authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. Gandalf ======= To enable application deployment using git, tsuru uses Gandalf to manage Git repositories used to push applications to. It's also responsible for setting hooks in these repositories which will notify the tsuru API when a new deploy is made. For more details check `Gandalf Documentation `_. .. note:: Gandalf is only required if you want to be able to deploy using ``git push``, without it you can still deploy applications using ``tsuru app-deploy``. Gandalf will store and manage all Git repositories and SSH keys, as well as users. When user runs a ``git push``, the communication happens directly between the user host and the Gandalf host, and Gandalf will notify tsuru the new deployment using a git hook. ++++++++++ Installing ++++++++++ Let's start adding the repositories for tsuru which contain the Gandalf package. deb: .. highlight:: bash :: $ curl -s https://packagecloud.io/install/repositories/tsuru/stable/script.deb.sh | sudo bash $ sudo apt-get install gandalf-server rpm: .. highlight:: bash :: $ curl -s https://packagecloud.io/install/repositories/tsuru/stable/script.rpm.sh | sudo bash $ sudo yum install gandalf-server For more details, check `packagecloud.io documentation `_. A deploy is executed in the ``git push``. In order to get it working, you will need to add a pre-receive hook. tsuru comes with one pre-receive hook, but you can create your own. Then you will need to configure Gandalf, install the pre-receive hook and start Gandalf. .. highlight:: bash :: sudo mkdir -p /home/git/bare-template/hooks sudo curl https://raw.githubusercontent.com/tsuru/tsuru/master/misc/git-hooks/pre-receive -o /home/git/bare-template/hooks/pre-receive sudo chmod +x /home/git/bare-template/hooks/pre-receive sudo chown -R git:git /home/git/bare-template In the ``/etc/gandalf.conf`` file, remove the comment from the line "template: /home/git/bare-template" and from the line "database", so it looks like that: .. highlight:: yaml :: database: url: :27017 name: gandalf git: bare: location: /var/lib/gandalf/repositories template: /home/git/bare-template Then start gandalf: .. highlight:: bash :: sudo start gandalf-server ++++++++++++++++++++++++++++++++ Configuring tsuru to use Gandalf ++++++++++++++++++++++++++++++++ In order to use Gandalf, you need to change tsuru.conf accordingly: #. Define "repo-manager" to use "gandalf"; #. Define "git:api-server" to point to the API of the Gandalf server (example: "http://localhost:8000"); For more details, please refer to the :doc:`configuration page `. +++++++++++++++++++++++++++++++++++++++ Token for authentication with tsuru API +++++++++++++++++++++++++++++++++++++++ There is one last step in configuring Gandalf. It involves generating an access token so that the hook we created can access the tsuru API. To do so, we need to export t wo extra environment variables to the git user, which will run our deploy hooks, the URL to our API server and a generated token. First step is to generate a token in the machine where the API server is installed: .. highlight:: bash :: $ tsurud token fed1000d6c05019f6550b20dbc3c572996e2c044 Now you have to go back to the machine you installed Gandalf, and run this: .. highlight:: bash :: $ cat | sudo tee -a /home/git/.bash_profile <:8080 export TSURU_TOKEN=fed1000d6c05019f6550b20dbc3c572996e2c044 EOF +++++++++++++++++++++++++++++++++++++++++++++++++++ Adding Gandalf to an already existing tsuru cluster +++++++++++++++++++++++++++++++++++++++++++++++++++ In the case of an old tsuru cluster running without Gandalf, users and applications registered in tsuru won't be available in the newly created Gandalf server, or both servers may be out-of-sync. When Gandalf is enabled, administrators of the cloud can run the ``tsurud gandalf-sync`` command. ++++++++++++++++++++++++ Managing SSH public keys ++++++++++++++++++++++++ In order to be able to send git pushes to the Git server :doc:`users need to have their key registered in Gandalf`.