Recent troubleshooting cases from our SREs, part 2

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It’s been a while since the previous article in which we shared several captivating stories about our real-life experience in operating Kubernetes clusters as well as applications/services running in them. Here is another episode in adventures of our engineers sailing in turbulent waters of a large-scale (and not so large) web applications.

Case #1. Kafka and Docker variables in Kubernetes

The container-based systems gradually become an industry standard, and many tools have already taken root in this environment. However, you can still find some ridiculous bugs related to integrating software into Docker/Kubernetes.

One day, we were going to deploy the standard bundle of ZooKeeper + Kafka for Sentry, with a possible addition of other components in some future. At first sight, the process looks easy: take one hard-to-read Kafka’s Helm chart as a basis (you can find it in this well-known GitHub repo), chip off all the unnecessary stuff, add some tweaks for your needs, et voila!

Please, read the rest here.