Welcome to the 7th edition of Open Source Matters: our regular publication about the latest happenings in open source! Let’s dive into the news.

Mattermost v6.4 is generally available today and includes the following new features (see changelog for more details).

The right tools enable your team to ship amazing code quickly. But between building, deploying, testing, monitoring, and maintaining software, all those great tools can create a lot of stuff to keep track of. Luckily, there’s a solution to this problem: ChatOps. ChatOps is a collective approach to running DevOps workflows and building a collaborative team culture.

Plugins can help teams unlock the full potential of Mattermost, but they aren’t always ready to go out of the box. Learn how Chimera streamlines plugin configuration via an OAuth2 Proxy. One of the best aspects of any software offered in the Cloud is the ability to start using it in just a matter of minutes. The same is true for the Mattermost Cloud offering.

This article explores how to secure production Kubernetes clusters with the help of open source tools. As a prerequisite, you’ll need to have basic beginner-level knowledge of Docker and Kubernetes. In a nutshell, Kubernetes is a container orchestration tool and Docker is a containerization platform. Some of the most famous Kubernetes clusters managed by cloud providers include AWS EKS, Azure AKS, and Google CKE.