Posts tagged with 'microservices'
January 24, 2020
Over the last year, I’ve been heavily working on deps.cloud. deps.cloud draws it’s inspiration from a project that I worked on at Indeed.com. Since it’s original inception, there had been a heavy push to move it into the open source space. In this post, I’ll discuss the process and rationale I applied as I rewrote this project in the open.
Checking Service Dependencies in Kubernetes
October 17, 2019
Back in July, I found myself needing to better coordinate deployments of my applications to Kubernetes.
After searching around, I found many ways that people where trying to solve this problem.
Some used shell scripts to apply multiple YAML files with a fixed time sleep between them.
Others used shell scripts and tailed the rollout using
kubectl rollout status -w.
Now, I manage a lot of my deployments using GitOps and Flux.
So leveraging these shell scripts to manage my rollouts into clusters wasn’t really an option.
It wasn’t until I came across Alibaba Cloud’s blog post on solving service dependencies that I felt like I had something to work with. The article described two techniques. The first was inspecting dependencies within the application itself. At Indeed, we leverage our status library to do this. The second was to enable services to be checked, independent of the application.
In this post, I’ll demonstrate how to use my service-precheck initialization container (built off of the Alibaba blog post) to ensure upstream systems are up before attempting to start a downstream system.