The DrizzleCI Infrastrucutre

The drizzle-ci repository contains the essentials to setup the Continuous Integration system. This infrastructure provides the following advantages:

• Relieves the cost of maintaining permanent servers
• Creates test servers on demand
• Provides parallelism
• Served with automation

First we need to clone the repository and setup the environment:

Clone the repository

git clone https://github.com/sharan-monikantan/drizzle-ci.git

Setup

The drizzle-ci/setup directory contains a config file. This file contains a few configurations that must be set prior setup. The config file contains some default values and users can leave those defaults as such. The CI_HOME variable should be set without fail. This CI_HOME is the location where the drizzle-ci repository lies in the local machine. For example, if drizzle-ci repository lies in /home/foo, then /home/foo/drizzle-ci is the value for CI_HOME. Once all variables are set, then perform source /setup/config

The next step is to setup the state file and pillar data in respecitive paths : sudo -E ./setup.sh That does pretty much all the work to setup the files. The log file for setup resides in the CI_HOME path as .drizzle-ci-log.

Once setup is complete the pillar data for the following modules should be filled in:

• cloud
• salt -> master-ip-address
• jenkins
• users

Now the users have two choices:

1. use salt-cloud for creating nodes: This creates a node, installs salt-minion on it, and adds its key in the master.
2. use nova for spinning up nodes: Needs explicit installation of salt-minion on the nodes.

If salt-cloud is your call, then run the cloud.sh script. sudo -E ./cloud.sh MASTER_ID, where MASTER_ID is the name of master node. This has to be passed explicitly as an argument to the script. Usually it is the same as $HOSTNAME. This should setup the provider configuration files and profile configuration files specific to your client ( eg, rackspace ), which is set in the cloud pillar data. And before spinning up cloud nodes via salt-cloud, salt-cloud itself has to be installed : pip install git+https://github.com/saltstack/salt-cloud.git#egg=salt_cloud

If nova is your choice, then run nova.sh with sudo -E ./nova.sh MASTER_ID. This will setup python-novaclient on the master. Then run the salt.sh with sudo -E ./salt.sh. This should install salt on all the created nodes.

Once setup is complete, all that you have to do is one last thing. sudo salt \* state.highstate and it takes care of the magical work of setting up all nodes to required state. And CI system is ready to use!