Fabian Lee : Software Engineer

Kubernetes: targeting the addition of array items to a multi-document yaml manifest

July 2, 2022
Categories: Kubernetes, Scripting

If you have a Kubernetes yaml manifest that contains multiple documents, targeting a single document for modification while still outputting the other documents untouched can be a challenge. As an example, consider the simple example below were you have a single yaml file that contains: a Namespace, Deployment, and DaemonSet. And we want to add … Kubernetes: targeting the addition of array items to a multi-document yaml manifest

Kubernetes: alternative to export for removing internal fields from yaml

January 26, 2022
Categories: Linux

The ‘export’ flag in kubectl was deprecated in 1.18, but you still need a way to dump the yaml of Kubernetes objects, often for the purpose of reapplying changes. The problem with doing a simple ‘get’ using a yaml output like below is that additional internal accounting attributes like ‘selfLink’, ‘creationTimestamp’, ‘uid’, will be present … Kubernetes: alternative to export for removing internal fields from yaml

Python: converting JSON to dot notation for easier path determination

October 24, 2021
Categories: Python, Scripting

Most of the modern cloud platforms and utilities have us manipulate either JSON or YAML configuration files. And when you start dealing with real world scenarios with hundreds of lines of embedded data structures it is too difficult and error-prone to manually inspect indentation levels to determine the exact dotted or json path to an … Python: converting JSON to dot notation for easier path determination

Bash: minimal .vimrc settings for python and yaml editing

April 6, 2021
Categories: Linux

If you are using vim on a constrained system (container or production system), you may not have the ability to setup vim plugin managers and plugins to mimic a full development environment. However, with a few basic settings in ‘~/.vimrc’, you can get a reasonable rendering that will assist in troubleshooting. ” find list using: … Bash: minimal .vimrc settings for python and yaml editing

Bash: Examining each certificate in a yaml file using sed and openssl

March 24, 2020
Categories: Linux, Scripting

YAML is a popular syntax for configuration, and it is common to have certificate definitions embedded in these files. But since the cert is typically Base64 PEM encoded, it means you can’t easily view its attributes (subject, expiration date, etc) and so you are left with the manual task of copy-pasting it out, saving as … Bash: Examining each certificate in a yaml file using sed and openssl