我正在尝试使用OpenFaas 项目和在 2 Raspberry Pi 3B+ 上运行的 kubernetes 集群部署一个功能。不幸的是，应该处理该函数的 pod 将ImageInspectError声明...我尝试直接使用 Docker 运行该函数，该函数包含在 Docker 映像中，并且一切正常。
我在 OpenFaas github 上打开了一个issue，维护者告诉我直接向 Kubernetes 社区询问一些线索。
我的第一个问题是： ImageInspectError 是什么意思，它来自哪里？
这是我拥有的所有信息：
预期行为
Pod 应该运行。
当前行为
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system etcd-masternode 1/1 Running 1 1d
kube-system kube-apiserver-masternode 1/1 Running 1 1d
kube-system kube-controller-manager-masternode 1/1 Running 1 1d
kube-system kube-dns-7f9b64f644-x42sr 3/3 Running 3 1d
kube-system kube-proxy-wrp6f 1/1 Running 1 1d
kube-system kube-proxy-x6pvq 1/1 Running 1 1d
kube-system kube-scheduler-masternode 1/1 Running 1 1d
kube-system weave-net-4995q 2/2 Running 3 1d
kube-system weave-net-5g7pd 2/2 Running 3 1d
openfaas-fn figlet-7f556fcd87-wrtf4 1/1 Running 0 4h
openfaas-fn testfaceraspi-7f6fcb5897-rs4cq 0/1 ImageInspectError 0 2h
openfaas alertmanager-66b98dd4d4-kcsq4 1/1 Running 1 1d
openfaas faas-netesd-5b5d6d5648-mqftl 1/1 Running 1 1d
openfaas gateway-846f8b5686-724q8 1/1 Running 2 1d
openfaas nats-86955fb749-7vsbm 1/1 Running 1 1d
openfaas prometheus-6ffc57bb8f-fpk6r 1/1 Running 1 1d
openfaas queue-worker-567bcf4d47-ngsgv 1/1 Running 2 1d
testfaceraspi不运行。
来自 pod 的日志：
$ kubectl logs testfaceraspi-7f6fcb5897-rs4cq -n openfaas-fn
Error from server (BadRequest): container "testfaceraspi" in pod "testfaceraspi-7f6fcb5897-rs4cq" is waiting to start: ImageInspectError
豆荚描述：
$ kubectl describe pod -n openfaas-fn testfaceraspi-7f6fcb5897-rs4cq
Name: testfaceraspi-7f6fcb5897-rs4cq
Namespace: openfaas-fn
Node: workernode/10.192.79.198
Start Time: Thu, 12 Jul 2018 11:39:05 +0200
Labels: faas_function=testfaceraspi
pod-template-hash=3929761453
Annotations: prometheus.io.scrape=false
Status: Pending
IP: 10.40.0.16
Controlled By: ReplicaSet/testfaceraspi-7f6fcb5897
Containers:
testfaceraspi:
Container ID:
Image: gallouche/testfaceraspi
Image ID:
Port: 8080/TCP
Host Port: 0/TCP
State: Waiting
Reason: ImageInspectError
Ready: False
Restart Count: 0
Liveness: exec [cat /tmp/.lock] delay=3s timeout=1s period=10s #success=1 #failure=3
Readiness: exec [cat /tmp/.lock] delay=3s timeout=1s period=10s #success=1 #failure=3
Environment:
fprocess: python3 index.py
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-5qhnn (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
default-token-5qhnn:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-5qhnn
Optional: false
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning DNSConfigForming 2m (x1019 over 3h) kubelet, workernode Search Line limits were exceeded, some search paths have been omitted, the applied search line is: openfaas-fn.svc.cluster.local svc.cluster.local cluster.local heig-vd.ch einet.ad.eivd.ch web.ad.eivd.ch
和事件日志：
$ kubectl get events --sort-by=.metadata.creationTimestamp -n openfaas-fn
LAST SEEN FIRST SEEN COUNT NAME KIND SUBOBJECT TYPE REASON SOURCE MESSAGE
14m 1h 347 testfaceraspi-7f6fcb5897-rs4cq.1540db41e89d4c52 Pod Warning DNSConfigForming kubelet, workernode Search Line limits were exceeded, some search paths have been omitted, the applied search line is: openfaas-fn.svc.cluster.local svc.cluster.local cluster.local heig-vd.ch einet.ad.eivd.ch web.ad.eivd.ch
4m 1h 75 figlet-7f556fcd87-wrtf4.1540db421002b49e Pod Warning DNSConfigForming kubelet, workernode Search Line limits were exceeded, some search paths have been omitted, the applied search line is: openfaas-fn.svc.cluster.local svc.cluster.local cluster.local heig-vd.ch einet.ad.eivd.ch web.ad.eivd.ch
10m 10m 1 testfaceraspi-7f6fcb5897-d6z78.1540df9ed8b91865 Pod Normal Scheduled default-scheduler Successfully assigned testfaceraspi-7f6fcb5897-d6z78 to workernode
10m 10m 1 testfaceraspi-7f6fcb5897.1540df9ed6eee11f ReplicaSet Normal SuccessfulCreate replicaset-controller Created pod: testfaceraspi-7f6fcb5897-d6z78
10m 10m 1 testfaceraspi-7f6fcb5897-d6z78.1540df9eef3ef504 Pod Normal SuccessfulMountVolume kubelet, workernode MountVolume.SetUp succeeded for volume "default-token-5qhnn"
4m 10m 27 testfaceraspi-7f6fcb5897-d6z78.1540df9eef5445c0 Pod Warning DNSConfigForming kubelet, workernode Search Line limits were exceeded, some search paths have been omitted, the applied search line is: openfaas-fn.svc.cluster.local svc.cluster.local cluster.local heig-vd.ch einet.ad.eivd.ch web.ad.eivd.ch
8m 9m 8 testfaceraspi-7f6fcb5897-d6z78.1540df9f670d0dad Pod spec.containers{testfaceraspi} Warning InspectFailed kubelet, workernode Failed to inspect image "gallouche/testfaceraspi": rpc error: code = Unknown desc = Error response from daemon: readlink /var/lib/docker/overlay2/l: invalid argument
9m 9m 7 testfaceraspi-7f6fcb5897-d6z78.1540df9f670fcf3e Pod spec.containers{testfaceraspi} Warning Failed kubelet, workernode Error: ImageInspectError
重现步骤（针对错误）
- 在 2 节点 k8s 集群上部署 OpenFaas
- 创建函数
faas new testfaceraspi --lang python3-armhf 在 中添加以下代码
handler.py：import json def handle(req): jsonl = json.loads(req) return ("Found " + str(jsonl["nbFaces"]) + " faces in OpenFaas Function on raspi !")更改
.yml提供商中的网关和图像：名称：faas 网关：http: //127.0.0.1 :31112functions: testfaceraspi: lang: python3-armhf handler: ./testfaceraspi image: gallouche/testfaceraspi跑
faas build -f testfacepi.yml- 登录 DockerHub
docker login - 跑
faas push -f testfacepi.yml - 跑
faas deploy -f testfacepi.yml
你的环境
FaaS-CLI 版本（来自：的完整输出
faas-cli version）：Commit: 3995a8197f1df1ecdf524844477cffa04e4690ea Version: 0.6.11Docker 版本（来自：的完整输出
docker version）：Client: Version: 18.04.0-ce API version: 1.37 Go version: go1.9.4 Git commit: 3d479c0 Built: Tue Apr 10 18:25:24 2018 OS/Arch: linux/arm Experimental: false Orchestrator: swarm Server: Engine: Version: 18.04.0-ce API version: 1.37 (minimum version 1.12) Go version: go1.9.4 Git commit: 3d479c0 Built: Tue Apr 10 18:21:25 2018 OS/Arch: linux/arm Experimental: false操作系统和版本（例如 Linux、Windows、MacOS）：
Distributor ID: Raspbian Description: Raspbian GNU/Linux 9.4 (stretch) Release: 9.4 Codename: stretch
提前感谢，如果您需要更多信息，请告诉我。
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