Solar container equipment debugging directory

How to debug cluster resources using interactive debugging containers?

Debug cluster resources using interactive debugging containers. 'debug' provides automation for common debugging tasks for cluster objects identified by resource and name. Pods will be used by default if no resource is specified. The action taken by 'debug' varies depending on what resource is specified. Supported actions include:

How do I use a container image for a debug container?

Container image to use for debug container. The image pull policy for the container. If left empty, this value will not be specified by the client and defaulted by the server. If true, keep the original pod annotations. (This flag only works when used with '--copy-to') Run the init containers for the pod. Defaults to true.

Can nixery debug images?

Not every image can be used for debugging - the statically linked tools (like busybox) or Nix-based distros expectedly work the best. Installing extra tools on demand will likely be problematic Nixery.dev fixed it for me. Mounting the debugging tools into the target container requires a restart.

How hard is it to debug containers in Kubernetes?

Debugging even simple containerized applications is challenging. Debugging applications that run in distroless containers is hard. And debugging distroless containers running in a Kubernetes cluster is close to impossible. Unless you know a trick a two.

What is containerd & how does it work?

containerd is a high-level container runtime, aka container manager. To put it simply, it's a daemon that manages the complete container lifecycle on a single host: creates, starts, stops containers, pulls and stores images, configures mounts, networking, etc. containerd is designed to be easily embeddable into larger systems.

How do I fix a stable-slim container that doesn't support debugging tools?

The most obvious solution is to put the debugging tools back when you need them. For instance, a container built from debian:stable-slim lacks even the basic stuff like ps: sleep 9999 # Nice, the shell is there! root@6aa917a50213:/ $# # But many tools are missing. You can "fix" it by installing the procps package right into the running container: