Dumb-init vs k8s-sidecar-injector: What are the differences?

What is Dumb-init? A minimal init system for Linux containers, by Yelp. dumb-init runs as PID 1, acting like a simple init system. It launches a single process and then proxies all received signals to a session rooted at that child process. Since your actual process is no longer PID 1, when it receives signals from dumb-init, the default signal handlers will be applied, and your process will behave as you would expect. If your process dies, dumb-init will also die, taking care to clean up any other processes that might still remain.

What is k8s-sidecar-injector? Kubernetes sidecar injection service. It is a small service that runs in each Kubernetes cluster, and listens to the Kubernetes API via webhooks. For each pod creation, the injector gets a (mutating admission) webhook, asking whether or not to allow the pod launch, and if allowed, what changes we would like to make to it.

Dumb-init and k8s-sidecar-injector belong to "Container Tools" category of the tech stack.

Dumb-init and k8s-sidecar-injector are both open source tools. Dumb-init with 3.84K GitHub stars and 212 forks on GitHub appears to be more popular than k8s-sidecar-injector with 143 GitHub stars and 19 GitHub forks.