The major reason that I replaced Flannel with Weave Net as the Kubernetes CNI is that Flannel does not support multicast. I did not realize it until my test Confluence DC cluster became dysfunctional. There are two Confluence nodes in the Confluence DC cluster. Each one is a pod, they are working fine when they … Continue reading Replace Flannel with Weave Net in Kubernetes
Use Glusterfs for Dynamic Volume Provisioning in Kubernetes
I recently setup a single node Kubernetes cluster on-premise for testing Jira and Confluence Data Center (which I will write a seperate blog later). In this blog, I want to share how I use Glusterfs as the shared storage which supports dynamic volume provisioning. Traditionally, to use persistent volume (PV) in a pod, you have … Continue reading Use Glusterfs for Dynamic Volume Provisioning in Kubernetes
Use Image Scanning for AWS ECR
Amazon just announced that ECR now has the image scanning capability. It is a good News if you use ECR as your Docker image registry, as you just can consume it for free! A good use case is to add it into your CI pipeline for image scanning. A quick example of scanning the Docker … Continue reading Use Image Scanning for AWS ECR
Confluence Space Exporter
Confluence supports multiple export file type for a Space via the Web interface. This is handy if you only need export a single space. But what if you need to export a large number of spaces? For example, offline archive the inactive users' personal spaces. I assume it will take you quite some time to … Continue reading Confluence Space Exporter
Creating new Jira issues throws java.lang.NullPointerException
If you get the java.lang.NullPointerException error page as above when you are trying to create a new issue, then most likely it has something to do with the Default Issue Type Scheme of your Jira. Follow the diagnoses steps in this knowledge base Jira server throws NullPointerException when creating new issues or changing project settings … Continue reading Creating new Jira issues throws java.lang.NullPointerException
Jackie Chen's IT Workshop 