快速开始
这里演示的是一个如何使用Volcano CRD资源的简单例子。
步骤1:
创建一个名为“test”的自定义队列。
# cat <<EOF | kubectl apply -f -
apiVersion: scheduling.volcano.sh/v1beta1
kind: Queue
metadata:
name: test
spec:
weight: 1
reclaimable: false
capability:
cpu: 2
EOF
步骤2:
创建一个名为“job-1”的Volcano job。
# cat <<EOF | kubectl apply -f -
apiVersion: batch.volcano.sh/v1alpha1
kind: Job
metadata:
name: job-1
spec:
minAvailable: 1
schedulerName: volcano
queue: test
policies:
- event: PodEvicted
action: RestartJob
tasks:
- replicas: 1
name: nginx
policies:
- event: TaskCompleted
action: CompleteJob
template:
spec:
containers:
- command:
- sleep
- 10m
image: nginx:latest
name: nginx
resources:
requests:
cpu: 1
limits:
cpu: 1
restartPolicy: Never
EOF
步骤3:
检查自定义job的状态。
# kubectl get vcjob job-1 -oyaml
apiVersion: batch.volcano.sh/v1alpha1
kind: Job
metadata:
creationTimestamp: "2020-01-18T12:59:37Z"
generation: 1
managedFields:
- apiVersion: batch.volcano.sh/v1alpha1
fieldsType: FieldsV1
fieldsV1:
f:spec:
.: {}
f:minAvailable: {}
f:policies: {}
f:queue: {}
f:schedulerName: {}
manager: kubectl
operation: Update
time: "2020-08-18T12:59:37Z"
- apiVersion: batch.volcano.sh/v1alpha1
fieldsType: FieldsV1
fieldsV1:
f:spec:
f:tasks: {}
f:status:
.: {}
f:minAvailable: {}
f:running: {}
f:state:
.: {}
f:lastTransitionTime: {}
f:phase: {}
manager: vc-controller-manager
operation: Update
time: "2020-08-18T12:59:45Z"
name: job-1
namespace: default
resourceVersion: "850500"
selfLink: /apis/batch.volcano.sh/v1alpha1/namespaces/default/jobs/job-1
uid: 215409ec-7337-4abf-8bea-e6419defd688
spec:
minAvailable: 1
policies:
- action: RestartJob
event: PodEvicted
queue: test
schedulerName: volcano
tasks:
- name: nginx
policies:
- action: CompleteJob
event: TaskCompleted
replicas: 1
template:
spec:
containers:
- command:
- sleep
- 10m
image: nginx:latest
name: nginx
resources:
limits:
cpu: 1
requests:
cpu: 1
status:
minAvailable: 1
running: 1
state:
lastTransitionTime: "2020-08-18T12:59:45Z"
phase: Running
步骤4:
检查名为”job-1“的PodGroup的状态
# kubectl get podgroup job-1 -oyaml
apiVersion: scheduling.volcano.sh/v1beta1
kind: PodGroup
metadata:
creationTimestamp: "2020-08-18T12:59:37Z"
generation: 5
managedFields:
- apiVersion: scheduling.volcano.sh/v1beta1
fieldsType: FieldsV1
fieldsV1:
f:metadata:
f:ownerReferences:
.: {}
k:{"uid":"215409ec-7337-4abf-8bea-e6419defd688"}:
.: {}
f:apiVersion: {}
f:blockOwnerDeletion: {}
f:controller: {}
f:kind: {}
f:name: {}
f:uid: {}
f:spec:
.: {}
f:minMember: {}
f:minResources:
.: {}
f:cpu: {}
f:queue: {}
f:status: {}
manager: vc-controller-manager
operation: Update
time: "2020-08-18T12:59:37Z"
- apiVersion: scheduling.volcano.sh/v1beta1
fieldsType: FieldsV1
fieldsV1:
f:status:
f:conditions: {}
f:phase: {}
f:running: {}
manager: vc-scheduler
operation: Update
time: "2020-08-18T12:59:45Z"
name: job-1
namespace: default
ownerReferences:
- apiVersion: batch.volcano.sh/v1alpha1
blockOwnerDeletion: true
controller: true
kind: Job
name: job-1
uid: 215409ec-7337-4abf-8bea-e6419defd688
resourceVersion: "850501"
selfLink: /apis/scheduling.volcano.sh/v1beta1/namespaces/default/podgroups/job-1
uid: ea5b4f87-b750-440b-a41a-5c9944a7ae43
spec:
minMember: 1
minResources:
cpu: "1"
queue: test
status:
conditions:
- lastTransitionTime: "2020-08-18T12:59:38Z"
message: '1/0 tasks in gang unschedulable: pod group is not ready, 1 minAvailable.'
reason: NotEnoughResources
status: "True"
transitionID: 606145d1-660f-4e01-850d-ed556cebc098
type: Unschedulable
- lastTransitionTime: "2020-08-18T12:59:45Z"
reason: tasks in gang are ready to be scheduled
status: "True"
transitionID: 57e6ba9e-55cc-47ce-a37e-d8bddd99d54b
type: Scheduled
phase: Running
running: 1
步骤5:
检查队列“test”的状态。
# kubectl get queue test -oyaml
apiVersion: scheduling.volcano.sh/v1beta1
kind: Queue
metadata:
creationTimestamp: "2020-08-18T12:59:30Z"
generation: 1
managedFields:
- apiVersion: scheduling.volcano.sh/v1beta1
fieldsType: FieldsV1
fieldsV1:
f:spec:
.: {}
f:capability: {}
f:reclaimable: {}
f:weight: {}
manager: kubectl
operation: Update
time: "2020-08-18T12:59:30Z"
- apiVersion: scheduling.volcano.sh/v1beta1
fieldsType: FieldsV1
fieldsV1:
f:spec:
f:capability:
f:cpu: {}
f:status:
.: {}
f:running: {}
f:state: {}
manager: vc-controller-manager
operation: Update
time: "2020-08-18T12:59:39Z"
name: test
resourceVersion: "850474"
selfLink: /apis/scheduling.volcano.sh/v1beta1/queues/test
uid: b9c9ee54-5ef8-4784-9bec-7a665acb1fde
spec:
capability:
cpu: 2
reclaimable: false
weight: 1
status:
running: 1
state: Open