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sos-ci - Simple OpenStack Continuous Integration

This is a somewhat simple app to let you implement a third-pary CI setup for OpenStack in your own lab.

The great thing is there's a number of folks using this now, and some have even contributed back. The BAD thing is that there are a number of people that are running this now and apprantly know just next to nothing about OpenStack.

Please, make sure you understand how tools like devstack and logging in to OpenStack Instances works before trying this. It would also be VERY helpful to cruise on out to the your Internet Search Engine of choice and read a bit about Ansible as well.

I recommend http://www.google.com for a lot of things.

For those that are interested in Containers, there's now a Dockerfile (build file) included in this repo. Additionaly you can always just download the image from Docker-Hub at jgriffith/sos-ci.

The Container piece is new so there's surely room for improvement (including splitting up services). If there's interest it would be great to see that take off so that 3'rd party CI is as simple as "docker run -t -i jgriffith/sos-ci /bin/bash". Well, almost, need some things to make auto-launch and respawn of the sos-ci process run automatically etc.

Requirements

Current requirements and assumptions.

  • You have to have an OpenStack Third Party CI account to monitor the Gerrit Stream

  • All of this work thus far assumes running on an OpenStack Cloud

  • Update/Modify sos_ci/ansible/vars.yml for your OpenStack creds

  • If you want to do multi-nic (ie: seperate network for iSCSI, use multi-nic options)

  • In order to use the mail notification option, install:

    • postfix
    • sendmail

  • Make sure you have the system you're running all of this on set up such that you can log on to your instances with SSH. Personally I set up my systems with a .ssh/config file that includes my OpenStack IP ranges and the key associated with them, but of course use whatever method you like.

  • mysql db Added support for subunit2sql, so we can take subunit results and keep a local DB of what we've run. You'll need to setup/configure a MySQL database and populate the schema prior to use. This is great for collection stats like how many tests we've run, pass/fail rate, timings etc etc. Eventually we'll use this to push up to a dashboard.

    Can be enabled/disabled via conf file. For more info on subunit2sql check here for instructions and more info: http://docs.openstack.org/developer/subunit2sql/

Requirements

Packages installed via apt-get: git python-software-properties python-pip ruby lvm2 python-dev postfix mysql-server libmysqlclient-dev

Additional setup

Whether running the Container image or buidling on a VM etc, there's a few things you'll need to do. Note that these things can/should be automated, particularly in the Dockerfile (if you're building it yourself):

  • Set up your OpenStack creds file
  • Source the creds file in your .bash_profile
  • Configure the settings in sos-ci.conf
  • Make sure you setup the default /etc/ansbile/hosts and ansible.cfg files

Current Status

Updated May 27, 2015

  • Added Dockerfile so you can build this as a container if you like
  • Pushed a Docker image to Docker-Hub (jgriffith/sos-ci)

Update Mar 12, 2015

  • Cleaned up the ansible config pieces a good bit
  • Improved the logging
  • Added hooks to create a DB and keep track of results/stats
  • Remove hard coded variables that refer to my system and account

Update Dec 22, 2014

  • Been running this for a few months now, pretty reliably
  • Only issues I've encountered are cleanup issues from Tempest after busy weeks I can get to a point where I have over 5K accounts and several thousand volumes, rather than messing with trying to detect the state in ansible and cleanup during idle period, I just wrote a cron job to do this for me each day.

Still very much a work in progress. Where it stands as of Aug 25, 17:50 UTC

  • Source your OpenStack creds file
  • Make sure default image-id, flavor, key-name etc are good, or specify in a creds file (to be added)
  • Launch with two listener threads
  • Picks events off of gerrit listener, and puts them in a queue
  • Currently queue processor just launches an instance, sleeps 60 seconds and deletes instance
  • Grabs next event in queue

TODO

From a Container perspective it would be really good to break some things out a bit. The obvious would be the sql database (run in an independent container). Could also use some more automation and another run through on the config setup.

This is almost at a stage where you can download the container from Docker-Hub, make some minor adjustments to the config and setttings and fire it off and never have to worry about it.

Also there's a ton of low hanging fruit here in terms of optimizations and cleanup, but the whole point of this effort was to setup a CI automation system with little overhead and a fire and forget type of reliability... that's done so I may or may not come back to it.

Highlights

Some highlighted points, and maybe answers to some questions.

  • Should work in any environment with just the addition of your own custom RC files
  • Pretty much just raw Python code just like kiss
  • Unlike kiss however we add a threaded job processor (my answer to node-pool, kinda)
  • Allow pluggable pieces for instance deployment and devstack/tempest run Idea here is if you use Vagrant for deployment... cool, if you use Salt... cool Use what you like and what you have, but you can always just use good old simple python with ssh.

Stats

stack-time : 20:41

Questions

Q: SSH checks to Instances fail, how come? A: Ansible uses SSH to connect to hosts, you need to make sure you have your system setup to use ssh keys appropriately. For me I use my .ssh/config file for this, you may have other methods you prefer, but for me I just have a config entry that specifies my keypair for any IP in the range of OpenStack cloud.