Nobody likes to be told how to get a specific task or job done. In fact, it’s arguably that very sentiment that holds backs adoption of DevOps processes inside many IT organizations. Aiming to provide IT organizations with a more flexible approach to DevOps, CircleCI has updated its continuous integration and continuous deployment (CI/CD) software to give IT organizations more granular control over workflows within a DevOps environment.
CircleCI CEO Jim Rose says the issue with most CI/CD frameworks is that they are too monolithic. Rather than allowing IT organizations to apply different types of workflows against various types of scenarios, Rose says most CI/CD platforms are too prescriptive in how they define workflows.
To provide some additional flexibility, version 2.0 of the company’s namesake CI/CD platform provides IT organizations with the ability to employ different types of workflows whenever appropriate, including:
Sequential job execution: Provided in the first release of CirceCI, this class of workflow is optimal for approaching jobs in a lockstep build-deploy-test model.
Parallel job execution: Allows IT organizations to run multiple jobs simultaneously in a way the resolves dependencies before deployment.
Fan-in/fan-out in a repo: Ideal for a more complex build orchestrations involving different test suites against commits to get faster feedback.
Branch-level filtering for job execution: Allows deployment of code off specific branches.
Job execution from failed and job execution from start: Allows IT operations teams to choose where and how build reruns are implemented to save repeating unnecessary jobs. IT allows IT operations teams to start jobs from the last failed job, instead of rerunning every job or stage.
Rose says the rise of microservices has begun to stress CI/CD platforms that were not designed to scale to support environments where Docker containers in any given microservice often are replaced. Any change to an element of microservice is likely to have a significant impact upstream and downstream. Rather than having to continually rerun every job, Rose says CircleCI now enables IT organizations that have embraced microservices to respond more adroitly to changes in the overall environment.
In an ideal world, DevOps processes lead to faster rollout of new applications and updates. In reality, however, there are more dependencies than ever. Rose contends that CI/CD platforms need to evolve to the point where they can allow IT operations teams to cope with accelerated rates of change instead of becoming a bottleneck. The irony of that, of course, is that CI/CD platforms were adopted to eliminate bottlenecks. But as microservices architectures continue to evolve, in many cases the CI/CD platform has become a new bottleneck.
It’s too early to say what impact microservices will have on DevOps. There’s no doubt that adoption of microservices will finally force the DevOps issue inside many organizations. But at the same many organizations that have already gone down the CI/CD path may soon find that some of their initial assumptions about what the word “continuous” meant were considerably misguided.
