minor

Kubernetes: minor version upgrade of Anthos GKE on-prem 1.9


Categories: Containers

Anthos GKE on-prem is a managed platform that brings GKE clusters to on-premise datacenters. In this article, I will be following the steps required to perform a minor-version upgrade from 1.9.1 to 1.9.2 on VMware. I will be using the same environment and config files described in my Anthos 1.9 installation article.

Java: Determining the Java version used to compile a class, ‘class file has the wrong version’


Categories: Java

If a Java class file is compiled with a higher supported version than is currently being run, you will get the ‘bad class file’, ‘class file has the wrong version XX.0, should be XX.0’ error message. For example, if the .class file was compiled as a Java 1.8 class file on a Jenkins continuous integration … Java: Determining the Java version used to compile a class, ‘class file has the wrong version’