Alpine Toolkit

An alpine container with some debugging tools installed. For every release there is a normal container that includes only the essentials, as well as an extended container, which includes more tools at the cost of size.

Included tools

The following tools are currently included in Docker image pgschk/alpine-toolkit:latest:

• telnet
• netcat
• curl
• tcpdump

Extended images

Additionally there is an extended image, which includes more tools at the cost of being larger. The image pgschk/alpine-toolkit:latest-extended additionally includes:

• mosquitto-clients (mosquitto_sub, mosquitto_pub)
• strace

Add additional tools

To add more packages, build the container with the build argument "EXTRA_PACKAGES" set to a list of Alpine packages:

docker buildx build --build-arg EXTRA_PACKAGES="mosquitto-clients" -t alpine-toolkit:local .

Use as Kubernetes debug

You can use kubectl debug to attach the container to an existing pod to get access to the debugging tools.

Example

We will assume that our pod is named "my-pod" with a container "my-container", which we want to attach to:

kubectl debug -it my-pod --image=pgschk/alpine-toolkit --target=mycontainer