[HDDS-1871] Remove anti-affinity rules from k8s minkube example

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Component/s: kubernetes
• Labels: pull-request-available
• Target Version/s: 0.4.1
• Sprint: Done
• Assignee: Marton Elek
• Reporter: Marton Elek
• Created: 29/Jul/19 12:44
• Updated: 24/Feb/20 20:52
• Resolved: 21/Aug/19 19:50

Description

HDDS-1646 introduced real persistence for k8s example deployment files which means that we need anti-affinity scheduling rules: Even if we use statefulset instead of daemonset we would like to start one datanode per real nodes.

With minikube we have only one node therefore the scheduling rule should be removed to enable at least 3 datanodes on the same physical nodes.

How to test:

 mvn clean install -DskipTests -f pom.ozone.xml
cd hadoop-ozone/dist/target/ozone-0.5.0-SNAPSHOT/kubernetes/examples/minikube
minikube start
kubectl apply -f .
kc get pod

You should see 3 datanode instances.

Issue Links

• links to: GitHub Pull Request #1180