Run Coroot on Fly

Questions / Help
1

I want to use Coroot.

Their docs Requirements | Coroot Documentation

explains how it works:

  • Coroot relies heavily on eBPF, therefore, the minimum supported Linux kernel version is 5.1.

  • eBPF-based continuous profiling utilizes CO-RE. CO-RE is supported by most modern Linux distributions, including:

    • Ubuntu 20.10 and above

    • Debian 11 and above

    • RHEL 8.2 and above

  • Coroot gathers metrics, logs, traces, and profiles, with each telemetry signal associated with containers. In this context, a container refers to a group of processes running within a dedicated cgroup. The following container types are supported:

    • Kubernetes Pods using Docker, Containerd, or CRI-O as their runtime environment

    • Standalone containers: Docker, Containerd, CRI-O

    • Docker Swarm

    • Systemd units: any systemd service is also considered as a container

  • Supported container orchestrators include:

    • Kubernetes: Self-managed, EKS (including basic support for AWS Fargate), GKE, AKS, OKE

    • OpenShift

    • K3s

    • MicroK8s

    • Docker Swarm

  • Limitations:

    • Coroot doesn’t support Docker-in-Docker environments such as MiniKube due to eBPF limitations

    • WSL1 (Windows Subsystem for Linux) is not supported

I understand that I need to have a compatible container orchestrator.

What kind of orchestrator does Fly use?

In general, my goal is to understand what is needed to use Coroot on Fly.

2

Fly.io runs on Firecracker. The default machine type injects a custom PID1 from Fly, and there is a run mode where there is no Fly PID1 process; I think that is basically Docker-in-Firecracker (so the outer VM would still have a custom PID1, but since your service would sit in Docker, you can take the PID1 there if you want).

Tbh, I am not sure how the orchestrator would come into it; it is more likely going to be the nature of the runtimes. Could you spin up a standard Fly machine with a basic Coroot instance, to see if it starts up? I’ve have thought it would either work or not work, so you’d be able to find out quickly.

3

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.