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GIT Workshop


This is the main repo for my GIT Workshop at PuppetConf 2014.

1. Install Puppet

Although really you should have it installed on your local machine already.

2. Install puppet-lint

gem install puppet-lint

3. Install Virtualbox

This vagrant setup requires one of the following versions: 4.0, 4.1, 4.2. The latest Virtualbox version is 4.3

4. Install Vagrant

Latest version, 1.5.6 when this repo was created, will work fine.

5. GIT clone this repo

git clone

6. cd gitworkshop

7. vagrant up

Get yourself a coffee and a snack. This is going to take awhile. Vagrant is provisioning the instances xmaster, gitlab, and testagent.

If you destroy (vagrant destroy ) the vagrant VMs and rebuild, the provisioning process won't take nearly as long because you'll already have downloaded the Puppet Enterprise installation file.

8. Set up the gitlab server

Login to the Gitlab web interface at: (default)

The default credentials are:

Username root
Password 5iveL!fe

You will be prompted immediately to change the root password.

8.1 Create a new "group" in Gitlab called puppet

8.2 Create a new project in Gitlab with the following settings:

Project Name: mymotd

Namespace: puppet

Visibility Level: Public

8.3 Add an SSH key to Gitlab

Go to the "profile settings" in Gitlab and click on "SSH Keys"

Add a public SSH key from your local machine

8.4 Get the mymotd code

On your local machine, clone the example mymotd module:

git clone
cd mymotd
rm -rf .git

Now the code is not a git working directory. Let's make that into a repo for your GitLab server. While still inside that mymotd directory:

git init
git add .
git commit -m "Initial commit"
git remote add origin git@
git push origin master

You should then be able to see the pushed code in the Gitlab repositories.

8.5 Add the pre-commit hook to your local repository

cd mymotd
cp hooks/pre-commit .git/hooks/
chmod 755 .git/hooks/pre-commit

Introduce an error into mymotd/manifests/init.pp, then try to add and commit the file. You will have a result somewhat like below.

vi manifests/init.pp
git add manifests/init.pp
git commit -m 'error'
Validating manifests/init.pp...
Error: Could not parse for environment production: Syntax error at 'owner'; expected '}' at mymotd/manifests/init.pp:6
[master df572b4] error
 1 file changed, 1 insertion(+), 1 deletion(-)

Fix the error(s) and re-attempt committing and pushing the file.

8.6 Add the pre-receive hook to the mymotd repo

SSH into the GitLab server, copy the hooks in the vagrant directory to the mymotd directory, and make the pre-receive hook executable:

vagrant ssh gitlab
sudo su -
cp -r /vagrant/hooks /var/opt/gitlab/git-data/repositories/puppet/mymotd.git/
chmod a+x /var/opt/gitlab/git-data/repositories/puppet/mymotd.git/hooks/pre-receive

Delete the pre-commit hook from your local repository:

rm .git/hooks/pre-commit

Re-introduce an error into the manifests/init.pp file. You should see a result like below:

vi manifests/init.pp
git add manifests/init.pp
git commit -m 're-introducing error'
[master d66d298] re-introducing error
 1 file changed, 2 insertions(+), 2 deletions(-)
git push origin master
Counting objects: 7, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (4/4), 358 bytes | 0 bytes/s, done.
Total 4 (delta 2), reused 0 (delta 0)
remote: Checking puppet manifest syntax for manifests/init.pp...
remote: Error: Could not parse for environment production: Syntax error at 'owner'; expected '}' at /tmp/mymotd/manifests/init.pp:6
remote: Error: puppet syntax error in manifests/init.pp (see above)
remote: Error: 1 syntax error(s) found in puppet manifests. Commit will be aborted.
remote: puppet-lint not installed. Skipping puppet-lint tests...
remote: Error: 1 subhooks failed. Declining push.
To git@gitlab.vagrant.vm:puppet/mymotd.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@gitlab.vagrant.vm:puppet/mymotd.git'

9. Add the master's SSH key to the GitLab Server

vagrant ssh xmaster
sudo su -
cat ~/.ssh/

Copy the output and paste it into a new SSH key entry in Gitlab.

10. Clone the mymotd to the master's module directory

vagrant ssh xmaster
sudo su -
cd /etc/puppetlabs/puppet/environments/production/modules
git clone git@gitlab.vagrant.vm:puppet/mymotd.git

11. Classify node default with mymotd

vagrant ssh xmaster
sudo su -
vi /etc/puppetlabs/puppet/environments/production/manifests/site.pp

Delete the comment to enable mymotd on node default.

12. Run puppet on testagent

vagrant ssh testagent
sudo su -
puppet agent -t


This makes use of Greg Sarjeant's data-driven-vagrantfile

Learn more about puppet-lint

Go do an interactive git tutorial

No Vagrant plugins are required.


GIT workshop for PuppetConf2014



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