在部署对象检测模型以使用GPU进行预测之后，我遇到了两个错误：
1.PodUnschedulable无法安排pod：nvidia不足
2.PodUnschedulable无法安排广告连播：com / gpu。
我有两个节点池。其中之一配置为启用Tesla K80 GPU和自动缩放。当我使用ksonnet应用程序部署服务组件时（如此处所述：https://github.com/kubeflow/examples/blob/master/object_detection/tf_serving_gpu.md#deploy-serving-component。
这是kubectl describe pods命令的输出：
Name: xyz-v1-5c5b57cf9c-kvjxn
Namespace: default
Node: <none>
Labels: app=xyz
pod-template-hash=1716137957
version=v1
Annotations: <none>
Status: Pending
IP:
Controlled By: ReplicaSet/xyz-v1-5c5b57cf9c
Containers:
aadhar:
Image: tensorflow/serving:1.11.1-gpu
Port: 9000/TCP
Host Port: 0/TCP
Command:
/usr/bin/tensorflow_model_server
Args:
--port=9000
--model_name=xyz
--model_base_path=gs://xyz_kuber_app-xyz-identification/export/
Limits:
cpu: 4
memory: 4Gi
nvidia.com/gpu: 1
Requests:
cpu: 1
memory: 1Gi
nvidia.com/gpu: 1
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-b6dpn (ro)
aadhar-http-proxy:
Image: gcr.io/kubeflow-images-public/tf-model-server-http-proxy:v20180606-9dfda4f2
Port: 8000/TCP
Host Port: 0/TCP
Command:
python
/usr/src/app/server.py
--port=8000
--rpc_port=9000
--rpc_timeout=10.0
Limits:
cpu: 1
memory: 1Gi
Requests:
cpu: 500m
memory: 500Mi
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-b6dpn (ro)
Conditions:
Type Status
PodScheduled False
Volumes:
default-token-b6dpn:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-b6dpn
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
nvidia.com/gpu:NoSchedule
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 20m (x5 over 21m) default-scheduler 0/2 nodes are available: 1 Insufficient nvidia.com/gpu, 1 node(s) were unschedulable.
Warning FailedScheduling 20m (x2 over 20m) default-scheduler 0/2 nodes are available: 1 Insufficient nvidia.com/gpu, 1 node(s) were not ready, 1 node(s) were out of disk space, 1 node(s) were unschedulable.
Warning FailedScheduling 16m (x9 over 19m) default-scheduler 0/1 nodes are available: 1 Insufficient nvidia.com/gpu.
Normal NotTriggerScaleUp 15m (x26 over 20m) cluster-autoscaler pod didn't trigger scale-up (it wouldn't fit if a new node is added)
Warning FailedScheduling 2m42s (x54 over 23m) default-scheduler 0/2 nodes are available: 2 Insufficient nvidia.com/gpu.
Normal TriggeredScaleUp 13s cluster-autoscaler pod triggered scale-up: [{https://content.googleapis.com/compute/v1/projects/xyz-identification/zones/us-central1-a/instanceGroups/gke-kuberflow-xyz-pool-1-9753107b-grp 1->2 (max: 10)}]
Name: mnist-deploy-gcp-b4dd579bf-sjwj7
Namespace: default
Node: gke-kuberflow-xyz-default-pool-ab1fa086-w6q3/10.128.0.8
Start Time: Thu, 14 Feb 2019 14:44:08 +0530
Labels: app=xyz-object
pod-template-hash=608813569
version=v1
Annotations: sidecar.istio.io/inject:
Status: Running
IP: 10.36.4.18
Controlled By: ReplicaSet/mnist-deploy-gcp-b4dd579bf
Containers:
xyz-object:
Container ID: docker://921717d82b547a023034e7c8be78216493beeb55dca57f4eddb5968122e36c16
Image: tensorflow/serving:1.11.1
Image ID: docker-pullable://tensorflow/serving@sha256:a01c6475c69055c583aeda185a274942ced458d178aaeb84b4b842ae6917a0bc
Ports: 9000/TCP, 8500/TCP
Host Ports: 0/TCP, 0/TCP
Command:
/usr/bin/tensorflow_model_server
Args:
--port=9000
--rest_api_port=8500
--model_name=xyz-object
--model_base_path=gs://xyz_kuber_app-xyz-identification/export
--monitoring_config_file=/var/config/monitoring_config.txt
State: Running
Started: Thu, 14 Feb 2019 14:48:21 +0530
Last State: Terminated
Reason: Error
Exit Code: 137
Started: Thu, 14 Feb 2019 14:45:58 +0530
Finished: Thu, 14 Feb 2019 14:48:21 +0530
Ready: True
Restart Count: 1
Limits:
cpu: 4
memory: 4Gi
Requests:
cpu: 1
memory: 1Gi
Liveness: tcp-socket :9000 delay=30s timeout=1s period=30s #success=1 #failure=3
Environment:
GOOGLE_APPLICATION_CREDENTIALS: /secret/gcp-credentials/user-gcp-sa.json
Mounts:
/secret/gcp-credentials from gcp-credentials (rw)
/var/config/ from config-volume (rw)
/var/run/secrets/kubernetes.io/serviceaccount from default-token-b6dpn (ro)
Conditions:
Type Status
Initialized True
Ready True
PodScheduled True
Volumes:
config-volume:
Type: ConfigMap (a volume populated by a ConfigMap)
Name: mnist-deploy-gcp-config
Optional: false
gcp-credentials:
Type: Secret (a volume populated by a Secret)
SecretName: user-gcp-sa
Optional: false
default-token-b6dpn:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-b6dpn
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
Events: <none>
kubectl describe pods | grep gpu的输出是：
Image: tensorflow/serving:1.11.1-gpu
nvidia.com/gpu: 1
nvidia.com/gpu: 1
nvidia.com/gpu:NoSchedule
Warning FailedScheduling 28m (x5 over 29m) default-scheduler 0/2 nodes are available: 1 Insufficient nvidia.com/gpu, 1 node(s) were unschedulable.
Warning FailedScheduling 28m (x2 over 28m) default-scheduler 0/2 nodes are available: 1 Insufficient nvidia.com/gpu, 1 node(s) were not ready, 1 node(s) were out of disk space, 1 node(s) were unschedulable.
Warning FailedScheduling 24m (x9 over 27m) default-scheduler 0/1 nodes are available: 1 Insufficient nvidia.com/gpu.
Warning FailedScheduling 11m (x54 over 31m) default-scheduler 0/2 nodes are available: 2 Insufficient nvidia.com/gpu.
Warning FailedScheduling 48s (x23 over 6m57s) default-scheduler 0/3 nodes are available: 3 Insufficient nvidia.com/gpu.
我是kubernetes的新手，无法理解这里出了什么问题。
更新：我确实有一个额外的Pod正在运行，这是我之前尝试过的。在@Paul Annett指出之后，我关闭了该窗口，但我仍然遇到相同的错误。
Name: aadhar-v1-5c5b57cf9c-q8cd8
Namespace: default
Node: <none>
Labels: app=aadhar
pod-template-hash=1716137957
version=v1
Annotations: <none>
Status: Pending
IP:
Controlled By: ReplicaSet/aadhar-v1-5c5b57cf9c
Containers:
aadhar:
Image: tensorflow/serving:1.11.1-gpu
Port: 9000/TCP
Host Port: 0/TCP
Command:
/usr/bin/tensorflow_model_server
Args:
--port=9000
--model_name=aadhar
--model_base_path=gs://xyz_kuber_app-xyz-identification/export/
Limits:
cpu: 4
memory: 4Gi
nvidia.com/gpu: 1
Requests:
cpu: 1
memory: 1Gi
nvidia.com/gpu: 1
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-b6dpn (ro)
aadhar-http-proxy:
Image: gcr.io/kubeflow-images-public/tf-model-server-http-proxy:v20180606-9dfda4f2
Port: 8000/TCP
Host Port: 0/TCP
Command:
python
/usr/src/app/server.py
--port=8000
--rpc_port=9000
--rpc_timeout=10.0
Limits:
cpu: 1
memory: 1Gi
Requests:
cpu: 500m
memory: 500Mi
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-b6dpn (ro)
Conditions:
Type Status
PodScheduled False
Volumes:
default-token-b6dpn:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-b6dpn
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
nvidia.com/gpu:NoSchedule
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal TriggeredScaleUp 3m3s cluster-autoscaler pod triggered scale-up: [{https://content.googleapis.com/compute/v1/projects/xyz-identification/zones/us-central1-a/instanceGroups/gke-kuberflow-xyz-pool-1-9753107b-grp 0->1 (max: 10)}]
Warning FailedScheduling 2m42s (x2 over 2m42s) default-scheduler 0/2 nodes are available: 1 Insufficient nvidia.com/gpu, 1 node(s) were not ready, 1 node(s) were out of disk space.
Warning FailedScheduling 42s (x10 over 3m45s) default-scheduler 0/2 nodes are available: 2 Insufficient nvidia.com/gpu.
更新2 ：我没有使用nvidia-docker。虽然，kubectl get pods -n=kube-system命令给了我
NAME READY STATUS RESTARTS AGE
event-exporter-v0.2.3-54f94754f4-vd9l5 2/2 Running 0 16h
fluentd-gcp-scaler-6d7bbc67c5-m8gt6 1/1 Running 0 16h
fluentd-gcp-v3.1.0-4wnv9 2/2 Running 0 16h
fluentd-gcp-v3.1.0-r6bd5 2/2 Running 0 51m
heapster-v1.5.3-75bdcc556f-8z4x8 3/3 Running 0 41m
kube-dns-788979dc8f-59ftr 4/4 Running 0 16h
kube-dns-788979dc8f-zrswj 4/4 Running 0 51m
kube-dns-autoscaler-79b4b844b9-9xg69 1/1 Running 0 16h
kube-proxy-gke-kuberflow-aadhaar-pool-1-57d75875-8f88 1/1 Running 0 16h
kube-proxy-gke-kuberflow-aadhaar-pool-2-10d7e787-66n3 1/1 Running 0 51m
l7-default-backend-75f847b979-2plm4 1/1 Running 0 16h
metrics-server-v0.2.1-7486f5bd67-mj99g 2/2 Running 0 16h
nvidia-device-plugin-daemonset-wkcqt 1/1 Running 0 16h
nvidia-device-plugin-daemonset-zvzlb 1/1 Running 0 51m
nvidia-driver-installer-p8qqj 0/1 Init:CrashLoopBackOff 13 51m
nvidia-gpu-device-plugin-nnpx7 1/1 Running 0 51m
看起来像nvidia驱动程序安装程序有问题。
更新3：添加了nvidia驱动程序安装程序日志。描述广告连播：kubectl describe pods nvidia-driver-installer-p8qqj -n=kube-system
Name: nvidia-driver-installer-p8qqj
Namespace: kube-system
Node: gke-kuberflow-aadhaar-pool-2-10d7e787-66n3/10.128.0.30
Start Time: Fri, 15 Feb 2019 11:22:42 +0530
Labels: controller-revision-hash=1137413470
k8s-app=nvidia-driver-installer
name=nvidia-driver-installer
pod-template-generation=1
Annotations: <none>
Status: Pending
IP: 10.36.5.4
Controlled By: DaemonSet/nvidia-driver-installer
Init Containers:
nvidia-driver-installer:
Container ID: docker://a0b18bc13dad0d470b601ad2cafdf558a192b3a5d9ace264fd22d5b3e6130241
Image: gke-nvidia-installer:fixed
Image ID: docker-pullable://gcr.io/cos-cloud/cos-gpu-installer@sha256:e7bf3b4c77ef0d43fedaf4a244bd6009e8f524d0af4828a0996559b7f5dca091
Port: <none>
Host Port: <none>
State: Waiting
Reason: CrashLoopBackOff
Last State: Terminated
Reason: Error
Exit Code: 32
Started: Fri, 15 Feb 2019 13:06:04 +0530
Finished: Fri, 15 Feb 2019 13:06:33 +0530
Ready: False
Restart Count: 23
Requests:
cpu: 150m
Environment: <none>
Mounts:
/boot from boot (rw)
/dev from dev (rw)
/root from root-mount (rw)
/var/run/secrets/kubernetes.io/serviceaccount from default-token-n5t8z (ro)
Containers:
pause:
Container ID:
Image: gcr.io/google-containers/pause:2.0
Image ID:
Port: <none>
Host Port: <none>
State: Waiting
Reason: PodInitializing
Ready: False
Restart Count: 0
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-n5t8z (ro)
Conditions:
Type Status
Initialized False
Ready False
PodScheduled True
Volumes:
dev:
Type: HostPath (bare host directory volume)
Path: /dev
HostPathType:
boot:
Type: HostPath (bare host directory volume)
Path: /boot
HostPathType:
root-mount:
Type: HostPath (bare host directory volume)
Path: /
HostPathType:
default-token-n5t8z:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-n5t8z
Optional: false
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations:
node.kubernetes.io/disk-pressure:NoSchedule
node.kubernetes.io/memory-pressure:NoSchedule
node.kubernetes.io/not-ready:NoExecute
node.kubernetes.io/unreachable:NoExecute
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning BackOff 3m36s (x437 over 107m) kubelet, gke-kuberflow-aadhaar-pool-2-10d7e787-66n3 Back-off restarting failed container
来自pod kubectl logs nvidia-driver-installer-p8qqj -n=kube-system的错误日志：
Error from server (BadRequest): container "pause" in pod "nvidia-driver-installer-p8qqj" is waiting to start: PodInitializing
答案 0 :(得分：1)
问题似乎与无法用于运行Pod的资源有关。该Pod包含两个容器，这些容器至少需要1.5Gi内存和1.5 cpu，最大5GB内存和5 cpu。
控制器无法识别满足运行Pod的资源要求的节点，因此未进行调度。
查看是否可以减少可与该节点之一匹配的资源限制。我还从日志中看到该节点之一的磁盘空间不足。检查（kubectl describe po）报告的那些问题，并对这些问题采取措施
Limits:
cpu: 4
memory: 4Gi
nvidia.com/gpu: 1
Requests:
cpu: 1
memory: 1Gi
nvidia.com/gpu: 1
Limits:
cpu: 1
memory: 1Gi
Requests:
cpu: 500m
memory: 500Mi
我看到Pod正在使用节点关联。
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: cloud.google.com/gke-accelerator
operator: Exists
您可以检查部署了pod的节点是否具有以下标签
cloud.google.com/gke-accelerator
或者删除nodeaffinity部分，查看pod是否已部署并显示正在运行
答案 1 :(得分：1)
在我删除了所有nvidia pod并删除了节点并重新创建并重新安装了nvidia驱动程序和插件之后，该问题已得到解决。但这不是在第一次尝试中发生的。