Lithos

Lithos is a process supervisor and containerizer for running services. Lithos is not intended to be system init. But rather tries to be a base tool to build container orchestration.

Features:

• use linux namespaces and cgroups for containerization
• immediate restart of failing processes (with rate limit of course)
• in-place upgrade of lithos without touching child processes
• written in Rust so memory-safe and has zero runtime dependencies

It's designed to have absolutely minimal required functionality. In particular it doesn't include:

• an image downloader (rsync is super-cool) or builder (use any tool)
• any network API

Running Examples

There is a configuration for building test image for vagga. You may use another tool to build image. For vagga just run:

vagga _build busybox

If you haven't built image by vagga you need to build it yourself and change image-dir setting in examples/sleep/limits/sleep.yaml.

You also need to create /dev folder if you haven't run lithos before:

lithos_mkdev /var/lib/lithos/dev

Now, run lithos, but specify full path to the config:

sudo lithos_tree --config ${PWD}/examples/sleep/master.yaml