Skip to main content
Version: Latest

Extender User Guide

Install volcano​

1. Install from source​

Refer to Install Guide to install volcano.

2. Deploy extender​

Deploy extender into kubernetes cluster. Extender needs to expose domain name or IP address and verbs that can be provided.

3. Update Volcano configuration​

kubectl edit cm -n volcano-system volcano-scheduler-configmap

Users can view the meaning of the parameters through the documentation

kind: ConfigMap
apiVersion: v1
metadata:
  name: volcano-scheduler-configmap
  namespace: volcano-system
data:
  volcano-scheduler.conf: |
    actions: "reclaim, allocate, backfill, preempt"
    tiers:
    - plugins:
      - name: priority
      - name: gang
      - name: conformance
    - plugins:
      - name: drf
      - name: predicates
      - name: extender
        arguments:
          extender.urlPrefix: http://127.0.0.1:8713
          extender.httpTimeout: 100ms
          extender.onSessionOpenVerb: onSessionOpen
          extender.onSessionCloseVerb: onSessionClose
          extender.predicateVerb: predicate
          extender.prioritizeVerb: prioritize
          extender.preemptableVerb: preemptable
          extender.reclaimableVerb: reclaimable
          extender.queueOverusedVerb: queueOverused
          extender.jobEnqueueableVerb: jobEnqueueable
          extender.ignorable: true

Verify Extender is working​

The user can see in the log something like : Initialize extender plugin with configuration : {your configuration}