Lifecycle Management of Operators  

Lifecycle Management of Kubernetes Operators by Paul Eichler

How to Do It and Why It Is Still an Unsolved Challenge

Are you building your first  Kubernetes extension but have no idea how to deploy and manage its lifecycle? 

In this article, we will discuss the general tasks of an operator and, right after diving into the details of the lifecycle of an operator. We will then evaluate different tools that have emerged in the Kubernetes eco-system and discuss how suitable they are for handling the lifecycle of operators at scale.


Error Handling in GO

Error Handling & Abstraction in GO

GO uses its capability to return multiple values for error handling, meaning that errors in go are regular values returned from a function. The developer must check the returned error value and handle it accordingly.

Error handling can quickly become non-trivial. You may want to change your behaviour if an error occurs, either substitute the failed functionality to increase fault tolerance or display an easy-to-understand error message to the user that does not intimidate them with long traces.


How to Push Apps to Cloud Foundry With a Sidecar to Stream Metrics to Prometheus

How to push apps to Cloud Foundry with a sidecar to stream metrics to Prometheus -Header image


Retrieving application metrics is usually not difficult. Simply implement a metrics endpoint and let Prometheus, for example, query that endpoint. But why is it the problem when you deploy an application on Cloud Foundry?

 If you deploy your application to a platform like Cloud Foundry, you will eventually run into problems. Most likely the endpoint cannot be easily retrieved from a running Prometheus instance to be scraped.