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This article needs update! Jupyter Installation pip in venv mkdir newdir && cd newdir python -m venv .venv (1) source .venv/bin/activate (2) pip install jupyter numpy pandas sqlalchemy (3) pip freeze > requirements.txt (4) python -m jupyter lab (5) deactivate (6) 1 create a new virtual environment 2 activate the environment 3 install several libraries into the activated environment 4 create a list with all dependencies install for sharing or reinstallation later 5 start jupyter 6 having finished we might want to exit the virtual environment ...

Inspect Docker Image with dive Install dive brew install dive Now we can run dive against any Docker image we wish to inspect…​ Run dive dive confluentinc/cp-kafka:5.4.3 Figure 1. Screenshot of dive analyzing the Kafka Docker image Resources: dive on GitHub Introspect Private Docker Registry List images: curl -s https://the-registry-url/v2/_catalog Get tags for an image curl -s https://the-registry-url/v2/the-image-name/tags/list An example: curl -s https://registry.local/v2/alpine/rabbitmq/tags/list {"name":"alpine/rabbitmq","tags":["3.9.17"]} Run Trivy Scan for Docker Image docker run aquasec/trivy image IMAGE:TAG ...

Remote Debug a Pod’s Java Process Simple steps for remote debugging a Java process running on a k8 pod: Edit deployment and add the following parameters to the Java start line: -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=127.0.0.1:5005 Also add the following port mapping at the section container → ports in the deployment: - containerPort: 5005 protocol: TCP Safe, wait for the new pods and then add a port forward for port 5005 for this pod: kubectl port-forward podname 5005 ...

These are not only linux snippets but also bash snippets and snippets using tools that run under Linux, *nix or sometimes even MacOSX, I should reorder this article someday ;) Settings for more reliable bash scripts set -euo pipefail this gives us …​ -e: exit script if a single command fails -u: exit script if an unset variable is used -o pipefail: return value of a pipeline is the status of the last command to exit with a non-zero status, or zero if no command exited with a non-zero status ...