Devops Days 2012 in Summary
DevopsDays is a juxtaposition in the world of IT. Most tech conferences focus on tools and processes, whereas Devops Days focuses on culture and the delivery of value. This year’s conference was no exception and here is a summary of what I experienced:
The Audubon Society for Partial Failures
The first presentation was done by Cliff Moon. He argues that there are many common patterns in the IT space and it would be valuable to have a repository of knowledge that we can visit to read about the types of errors that can happen. If we could build a taxonomy for the partial failures that exist we may better understand our systems and explain when full-blown outages occur.
He stresses sharing as the ultimate method for this. Not just sharing ideas and hypotheses but also the data that lead to the hypothesis. This allows for peer review and corrections to be made if analysis of the data could have been misinterpreted.
What I really enjoyed was the spirit of Cliff’s talk. The influence for the title was a man who was obsessed with categorizing birds, John James Adubon. What really hit home was the idea that there’s always someone on your team that is somewhat of a shaman when it comes to resolving production issues. It might simply be because that person understands the conventions of the system at work. Creating this taxonomy could help in revealing the shaman’s “secrets” and allow for everyone to weave a little magic.
I believe this to be a very important topic because this is going to be a drastic change for most organisations. Large companies are enamoured with startup culture and ideas, but aren’t seeing what’s required of them to change to this model. A change in testing strategy is a significant barrier to entry for most large companies. Even if the devs and ops teams are collaborating, they can’t deliver anything unless it gets passed the quality gates.
I got a chance to meet Mitchell Hashimoto, creator of a tool that I’ve been enjoying quite a bit lately, Vagrant. There was an excellent discussion on how people are using vagrant in their organisation. What was also exciting was hearing what’s coming out next:
- run on any VM software
- run any guest OS (that includes OS X)
- distributed as a package, not as a gem
- Builder (essentially merging veewee into vagrant)
During the session I also learned about the concept of baking an image vs frying one (and everyone knows I love analogies). To bake an image is to use an image as is, no configuration management is needed. This doesn’t mean configuration management isn’t used to bake that image though which I thought was an important detail. Frying an image is to start with a common base and always reach an end state via configuration management. Frying is the approach I favour because I like to execute my chef recipes as often as possible. I also learned about different ways of baking images and still having the same level of confidence in configuration management scripting.
Gauntlt and bridging the gap between security and everyone
James Wickett, a security consultant, discussed how security is feeling left out in this crazy world of Continuous Integration, Testing, and Delivery. What is cool, is that he’s doing something about it.
In typical security processes, an organisation has someone come in and perform an assessment of the security of the applications being developed. The artifact is usually a 100 page PDF describing everything that’s wrong with the system being developed. Instead of a document, he suggests delivering a test suite that can be executed continuously. Hence gauntlt is born; a tool to execute security tests against a running application.
I chatted with James briefly and somehow managed to volunteer to join their team. I am no security expert, but I believe there’s a gap in security knowledge in the software industry. Hopefully by integrating gauntlt into future projects I can provide some feedback to make the tool more useful.
Continuous Delivery at Ancestry.com
I posted my thoughts on a similar presentation at Chef Conf and again John delivered an excellent presentation on the values of culture and delivery focus at their organisation.
Again I got a chance to chat with Dan Gilmer who implemented a lot of tech around their pipeline and am looking forward to collaborating with him on open sourcing his robust solution to dealing with Windows configuration management using PowerShell and Chef. Hopefully we’ll have some of that knowledge in a project in github soon.
Automating Application Configuration Deployment
Dan Nemec delivered a presentation that is very near and dear to my heart. Application configuration management can be messy if left to people who do not have visibility into all the systems that are in play. He brought a system that required 400+ configuration files to a 2 file system. The 400+ files still existed but by using templates, and simple configuration hierarchy in chef he was able to make application configuration management much simpler and easier to scale.
This hit home for me because I’ve implemented my own turnkey implementation of this on my last few projects. Those that have worked with me know I refer to these as environment yaml files. These files are a manifest of the topology of an environment and all its configuration.
You can read more about Dan’s thoughts on this on his blog.
Where Does SmallOps Fit In
This session was very relevant to me as someone who has been working on a small team for the last few months. Matthew Kocher highlights the simple solutions which is why I really enjoy hearing him discuss his opinion.
During this session not much of a consensus was reached. I got the feeling that most of the people in the room didn’t quite know what to do with SmallOps. How do you manage 20 servers and not complicate the infrastructure management?
Devops as a role on projects
This topic, I love in principle, but do a horrible job in practice. There’s no such thing as a “DevOps Engineer”, it’s just a mindset. This is where the cultural message is most important. DevOps is about transforming organisations to remove silos. Jamie who brought up the open space likened a software delivery team to a sports team (again, I love the analogies). With sports you still have specialists, but they work has a cohesive unit. In football, there’s no reason a defense person can’t score a goal. If you have a team where offensive players begin blaming defense for their lack of success you then have a disfunctional team.
What Am I Going To Do Now?
It really hit home to me after this Devops Days how I am doing a lot of things wrong in the mission to bridge these gaps.
I’m going to:
- Measure all things.
- Use monitoring tools (I’ve been a cowboy ops person for too long)
- Keep my engagements short to force knowledge transfer early