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
The ability to use introspection to dynamically determine the current code context and frame/stack can be a powerful tool for a developer. Introspection can be applied for debugging, logging, metrics collection, or method overloading based on type. Building on my earlier article on the basics of introspection, I will now show how to inject custom … Python: Using a custom decorator to inspect function arguments
File copying is about more than just content – the metadata for user ownership, permissions, and timestamps is often critical to retrieval and function. Below are the relevant switches for metadata preservation when using cp, rsync, and tar. These typically need sudo in order to work.
Syslog is a message logging standard has been around for decades, but has renewed popularity as a method of log capture with the advent of containerization and centralized logging solutions. Enabling an Ubutu 14.04 or 16.04 host to act as a syslog server only takes a few simple steps.
When building complex, real-world Logstash filters, there can be a fair bit of processing logic. There are typically multiple grok patterns as well as fields used as flags for conditional processing. The problem is, these intermediate extracted fields and processing flags are often ephemeral and unnecessary in your ultimate persistent store (e.g. ElasticSearch), but they will be inserted … ELK: metadata fields in Logstash for grok and conditional processing