Operations | Monitoring | ITSM | DevOps | Cloud

In the first article in this series, we talked about making Kubernetes essential to your DevOps pipeline. We reviewed CI/CD and DevOps and why their relationship with Kubernetes is so powerful. In this article, I’m going to dive into another term in the application development and management mix: GitOps. We’ll cover what GitOps is, how it affects an organization and how it aligns with Kubernetes.

Deployment controllers are a type of Pod controller in Kubernetes. They provide fine-grained control over how its pods are configured, how updates are performed, how many pods should run, and when pods should be terminated. There are many resources available for how to configure basic deployments, but it can be difficult to understand how each option impacts how rolling updates are performed.

Kubernetes is the world’s leading container orchestration platform. Its cloud agnostic status enables you to manage your workloads with ease, whether they reside in the cloud or on-premises. It has reduced the necessity of being locked into services provided by a cloud provider as well as the need for an entire operations team to manage large workloads on-premises on virtualization platforms.

Back in the early days of software development, having multiple developers working on the same application was a tough challenge. That’s why VCS (Version Control System) like Git was created and methodology like Feature Branching was introduced. The basic idea of working per git branch (also known as Feature Branching) is that when you start to work on a feature, you take a branch of your repository (e.g: git) to work on that feature.

Have you ever grown tired of running the same kubectl commands again and again? Well the good folks over at the Kubernetes team understand you. With the addition of custom resources and the operator pattern, you can now make use of extensions, or addons as I like to call them, to the Kubernetes API that help you manage applications and components. Operators follow Kubernetes principles including the control loop.

In my previous blog post, “How to Explore Prometheus with Easy ‘Hello World’ Projects”, I described three projects that I used to get a better sense of what Prometheus can do. In this post, I’d like to share how I got more familiar with Prometheus Alertmanager and how I set up alert notifications for Slack, PagerDuty, and Gmail.

Rancher allows enterprises to adopt container and Kubernetes-related technologies incrementally.