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Failed to create api.Node object for kubelet: could not get external identifier from cloud provider: could not find object

Trying to use Zinder volunteers on OpenStack as persistent volumes for my pods. Once I configure cloudprovider and restart kubelet, kubelet will not be able to get its external ID from the cloud provider.

The OpenStack API is accessible via https using the comodo certificate. comodo-ca-bundle is installed as trusted ca on node. Using curl against the API works without the --insecure and --cacert options.

Using Kubernets 1.1.0-alpha on centos 7

$ sudo journalctl -u kubelet

Oct 01 07:40:26 [4196]: I1001 07:40:26.303887 4196 debugging.go:129] Content-Length: 1159 Oct 01 07:40:26 [4196]: I1001 07:40:26.303895 4196 debugging.go:129] Content-Type: application/json Oct 01 07:40:26 [4196]: I1001 07:40:26.303950 4196 request.go:755] Response Body: {"kind":"NodeList","apiVersion":"v1","metadata":{"selfLink":"/api/v1/nodes","resourceVersion":"172921"},"items":[{"metadata":{"name":"192.168.100.80","selfLink":"/api/v1/nodes/192.168.100.80","uid":"b48b4cb9-676f-11e5-8521-fa163ef34ff1","resourceVersion":"172900","creationTimestamp":"2015-09-30T12:35:17Z","labels":{"kubernetes.io/hostname":"192.168.100.80"}},"spec":{"externalID":"192.168.100.80"},"status":{"capacity":{"cpu":"2","memory":"4047500Ki","pods":"40"},"conditions":[{"type":"Ready","status":"Unknown","lastHeartbeatTime":"2015-10-01T07:31:55Z","lastTransitionTime":"2015-10-01T07:32:36Z","reason":"Kubelet stopped posting node status."}],"addresses":[{"type":"LegacyHostIP","address":"192.168.100.80"},{"type":"InternalIP","address":"192.168.100.80"}],"nodeInfo":{"machineID":"dae72fe0cc064eb0b7797f25bfaf69df","systemUUID":"384A8E40-1296-9A42-AD77-445D83BB5888","bootID":"5c7eb3ff-d86f-41f2-b3eb-a39adf313a4f","kernelVersion":"3.10.0-229.14.1.el7.x86_64","osImage":"CentOS Linux 7 (Core)","containerRuntimeVersion":"docker://1.7.1","kubeletVersion":"v1.1.0-alpha.1.390+196f58b9cb25a2","kubeProxyVersion":"v1.1.0-alpha.1.390+196f58b9cb25a2"}}}]} Oct 01 07:40:26 [4196]: I1001 07:40:26.475016 4196 request.go:457] Request Body: {"kind":"DeleteOptions","apiVersion":"v1","gracePeriodSeconds":0} Oct 01 07:40:26 [4196]: I1001 07:40:26.475148 4196 debugging.go:101] curl -k -v -XDELETE -H "Authorization: Bearer rhARkbozkWcrJyvdLQqF9TNO86KHjOsq" -H "User-Agent: kubelet/v1.1.0 (linux/amd64) kubernetes/196f58b" https://localhost:6443/api/v1/namespaces/kube-system/pods/fluentd-elasticsearch-192.168.100.80 Oct 01 07:40:26 [4196]: I1001 07:40:26.526794 4196 debugging.go:120] DELETE https://localhost:6443/api/v1/namespaces/kube-system/pods/fluentd-elasticsearch-192.168.100.80 200 OK in 51 milliseconds Oct 01 07:40:26 [4196]: I1001 07:40:26.526865 4196 debugging.go:126] Response Headers: Oct 01 07:40:26 [4196]: I1001 07:40:26.526897 4196 debugging.go:129] Content-Type: application/json Oct 01 07:40:26 [4196]: I1001 07:40:26.526927 4196 debugging.go:129] Date: Thu, 01 Oct 2015 07:40:26 GMT Oct 01 07:40:26 [4196]: I1001 07:40:26.526957 4196 debugging.go:129] Content-Length: 1977 Oct 01 07:40:26 [4196]: I1001 07:40:26.527056 4196 request.go:755] Response Body: {"kind":"Pod","apiVersion":"v1","metadata":{"name":"fluentd-elasticsearch-192.168.100.80","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/pods/fluentd-elasticsearch-192.168.100.80","uid":"a90941f6-680f-11e5-988c-fa163e94cde4","resourceVersion":"172926","creationTimestamp":"2015-10-01T07:40:17Z","deletionTimestamp":"2015-10-01T07:40:26Z","deletionGracePeriodSeconds":0,"annotations":{"kubernetes.io/config.mirror":"mirror","kubernetes.io/config.seen":"2015-10-01T07:39:43.986114806Z","kubernetes.io/config.source":"file"}},"spec":{"volumes":[{"name":"varlog","hostPath":{"path":"/var/log"}},{"name":"varlibdockercontainers","hostPath":{"path":"/var/lib/docker/containers"}}],"containers":[{"name":"fluentd-elasticsearch","image":"gcr.io/google_containers/fluentd-elasticsearch:1.11","args":["-q"],"resources":{"limits":{"cpu":"100m"},"requests":{"cpu":"100m"}},"volumeMounts":[{"name":"varlog","mountPath":"/var/log"},{"name":"varlibdockercontainers","readOnly":true,"mountPath":"/var/lib/docker/containers"}],"terminationMessagePath":"/dev/termination-log","imagePullPolicy":"IfNotPresent"}],"restartPolicy":"Always","terminationGracePeriodSeconds":30,"dnsPolicy":"ClusterFirst","nodeName":"192.168.100.80"},"status":{"phase":"Running","conditions":[{"type":"Ready","status":"True"}],"hostIP":"192.168.100.80","podIP":"172.16.58.24","startTime":"2015-10-01T07:40:17Z","containerStatuses":[{"name":"fluentd-elasticsearch","state":{"running":{"startedAt":"2015-10-01T07:37:23Z"}},"lastState":{"terminated":{"exitCode":137,"startedAt":"2015-10-01T07:23:00Z","finishedAt":"2015-10-01T07:33:17Z","containerID":"docker://1398736fd9b274132721206ccaf89030af5e8e304118d29286aec6b2529395ee"}},"ready":true,"restartCount":1,"image":"gcr.io/google_containers/fluentd-elasticsearch:1.11","imageID":"docker://03ba3d224c2a80600a0b44a9894ac0de5526d36b810b13924e33ada76f1e7406","containerID":"docker://d9ac24c8a0fbceea7c494bce73d56d6ea5f003f1d1b7b8ad3975fc7e3c7679b4"}]}} Oct 01 07:40:26 [4196]: I1001 07:40:26.528210 4196 status_manager.go:209] Pod "fluentd-elasticsearch-192.168.100.80" fully terminated and removed from etcd Oct 01 07:40:26 [4196]: I1001 07:40:26.675178 4196 debugging.go:101] curl -k -v -XGET -H "User-Agent: kubelet/v1.1.0 (linux/amd64) kubernetes/196f58b" -H "Authorization: Bearer rhARkbozkWcrJyvdLQqF9TNO86KHjOsq" https://localhost:6443/api/v1/services Oct 01 07:40:26 [4196]: I1001 07:40:26.710214 4196 debugging.go:120] GET https://localhost:6443/api/v1/services 200 OK in 34 milliseconds Oct 01 07:40:26 [4196]: I1001 07:40:26.710249 4196 debugging.go:126] Response Headers: Oct 01 07:40:26 [4196]: I1001 07:40:26.710260 4196 debugging.go:129] Content-Type: application/json Oct 01 07:40:26 [4196]: I1001 07:40:26.710270 4196 debugging.go:129] Date: Thu, 01 Oct 2015 07:40:26 GMT Oct 01 07:40:26 [4196]: I1001 07:40:26.710436 4196 request.go:755] Response Body: {"kind":"ServiceList","apiVersion":"v1","metadata":{"selfLink":"/api/v1/services","resourceVersion":"172927"},"items":[{"metadata":{"name":"kubernetes","namespace":"default","selfLink":"/api/v1/namespaces/default/services/kubernetes","uid":"28717019-676b-11e5-afb9-fa163e94cde4","resourceVersion":"18","creationTimestamp":"2015-09-30T12:02:44Z","labels":{"component":"apiserver","provider":"kubernetes"}},"spec":{"ports":[{"protocol":"TCP","port":443,"targetPort":443}],"clusterIP":"10.100.0.1","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"elasticsearch-logging","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/services/elasticsearch-logging","uid":"833c8df5-676b-11e5-958e-fa163e94cde4","resourceVersion":"153","creationTimestamp":"2015-09-30T12:05:16Z","labels":{"k8s-app":"elasticsearch-logging","kubernetes.io/cluster-service":"true","kubernetes.io/name":"Elasticsearch"}},"spec":{"ports":[{"protocol":"TCP","port":9200,"targetPort":"db"}],"selector":{"k8s-app":"elasticsearch-logging"},"clusterIP":"10.100.3.159","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"kibana-logging","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/services/kibana-logging","uid":"833043fa-676b-11e5-958e-fa163e94cde4","resourceVersion":"149","creationTimestamp":"2015-09-30T12:05:16Z","labels":{"k8s-app":"kibana-logging","kubernetes.io/cluster-service":"true","kubernetes.io/name":"Kibana"}},"spec":{"ports":[{"protocol":"TCP","port":5601,"targetPort":"ui"}],"selector":{"k8s-app":"kibana-logging"},"clusterIP":"10.100.136.111","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"kube-dns","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/services/kube-dns","uid":"8319ba13-676b-11e5-958e-fa163e94cde4","resourceVersion":"146","creationTimestamp":"2015-09-30T12:05:16Z","labels":{"k8s-app":"kube-dns Oct 01 07:40:26 [4196]: ","kubernetes.io/cluster-service":"true","kubernetes.io/name":"KubeDNS"}},"spec":{"ports":[{"name":"dns","protocol":"UDP","port":53,"targetPort":53},{"name":"dns-tcp","protocol":"TCP","port":53,"targetPort":53}],"selector":{"k8s-app":"kube-dns"},"clusterIP":"10.100.0.10","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"kube-ui","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/services/kube-ui","uid":"83473271-676b-11e5-958e-fa163e94cde4","resourceVersion":"155","creationTimestamp":"2015-09-30T12:05:16Z","labels":{"k8s-app":"kube-ui","kubernetes.io/cluster-service":"true","kubernetes.io/name":"KubeUI"}},"spec":{"ports":[{"protocol":"TCP","port":80,"targetPort":8080}],"selector":{"k8s-app":"kube-ui"},"clusterIP":"10.100.246.61","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"monitoring-grafana","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/services/monitoring-grafana","uid":"835da09c-676b-11e5-958e-fa163e94cde4","resourceVersion":"157","creationTimestamp":"2015-09-30T12:05:16Z","labels":{"kubernetes.io/cluster-service":"true","kubernetes.io/name":"Grafana"}},"spec":{"ports":[{"protocol":"TCP","port":80,"targetPort":8080}],"selector":{"k8s-app":"influxGrafana"},"clusterIP":"10.100.207.92","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"monitoring-heapster","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/services/monitoring-heapster","uid":"83367b90-676b-11e5-958e-fa163e94cde4","resourceVersion":"151","creationTimestamp":"2015-09-30T12:05:16Z","labels":{"kubernetes.io/cluster-service":"true","kubernetes.io/name":"Heapster"}},"spec":{"ports":[{"protocol":"TCP","port":80,"targetPort":8082}],"selector":{"k8s-app":"heapster"},"clusterIP":"10.100.119.4","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"monitoring-influxdb","namespace":"kube-system","selfLink":"/api/v1/names Oct 01 07:40:26 [4196]: paces/kube-system/services/monitoring-influxdb","uid":"836c95b8-676b-11e5-958e-fa163e94cde4","resourceVersion":"159","creationTimestamp":"2015-09-30T12:05:16Z","labels":{"kubernetes.io/cluster-service":"true","kubernetes.io/name":"InfluxDB"}},"spec":{"ports":[{"name":"http","protocol":"TCP","port":8083,"targetPort":8083},{"name":"api","protocol":"TCP","port":8086,"targetPort":8086}],"selector":{"k8s-app":"influxGrafana"},"clusterIP":"10.100.101.182","type":"ClusterIP","sessionAffinity":"None"},"status":{"loadBalancer":{}}},{"metadata":{"name":"reverseproxy","namespace":"kube-system","selfLink":"/api/v1/namespaces/kube-system/services/reverseproxy","uid":"15e65b7d-6776-11e5-a5d0-fa163e94cde4","resourceVersion":"10994","creationTimestamp":"2015-09-30T13:20:57Z","labels":{"k8s-app":"reverseproxy","kubernetes.io/cluster-service":"true","kubernetes.io/name":"reverseproxy"}},"spec":{"ports":[{"name":"http","protocol":"TCP","port":8181,"targetPort":8181,"nodePort":80},{"name":"https","protocol":"TCP","port":8181,"targetPort":8181,"nodePort":443}],"selector":{"k8s-app":"reverseproxy"},"clusterIP":"10.100.168.84","type":"NodePort","sessionAffinity":"None"},"status":{"loadBalancer":{}}}]} Oct 01 07:40:26 [4196]: I1001 07:40:26.875150 4196 debugging.go:101] curl -k -v -XGET -H "User-Agent: kubelet/v1.1.0 (linux/amd64) kubernetes/196f58b" -H "Authorization: Bearer rhARkbozkWcrJyvdLQqF9TNO86KHjOsq" https://localhost:6443/api/v1/watch/nodes?fieldSelector=metadata.name%3D192.168.100.80&resourceVersion=172921 Oct 01 07:40:26 [4196]: I1001 07:40:26.900981 4196 debugging.go:120] GET https://localhost:6443/api/v1/watch/nodes?fieldSelector=metadata.name%3D192.168.100.80&resourceVersion=172921 200 OK in 25 milliseconds Oct 01 07:40:26 [4196]: I1001 07:40:26.901009 4196 debugging.go:126] Response Headers: Oct 01 07:40:26 [4196]: I1001 07:40:26.901018 4196 debugging.go:129] Date: Thu, 01 Oct 2015 07:40:26 GMT Oct 01 07:40:27 [4196]: I1001 07:40:27.001744 4196 iowatcher.go:102] Unexpected EOF during watch stream event decoding: unexpected EOF Oct 01 07:40:27 [4196]: I1001 07:40:27.002685 4196 reflector.go:294] pkg/client/unversioned/cache/reflector.go:87: Unexpected watch close - watch lasted less than a second and no items received Oct 01 07:40:27 [4196]: W1001 07:40:27.002716 4196 reflector.go:224] pkg/client/unversioned/cache/reflector.go:87: watch of *api.Node ended with: very short watch Oct 01 07:40:27 [4196]: I1001 07:40:27.075065 4196 debugging.go:101] curl -k -v -XGET -H "User-Agent: kubelet/v1.1.0 (linux/amd64) kubernetes/196f58b" -H "Authorization: Bearer rhARkbozkWcrJyvdLQqF9TNO86KHjOsq" https://localhost:6443/api/v1/watch/services?resourceVersion=172927 Oct 01 07:40:27 [4196]: I1001 07:40:27.101642 4196 debugging.go:120] GET https://localhost:6443/api/v1/watch/services?resourceVersion=172927 200 OK in 26 milliseconds Oct 01 07:40:27 [4196]: I1001 07:40:27.101689 4196 debugging.go:126] Response Headers: Oct 01 07:40:27 [4196]: I1001 07:40:27.101705 4196 debugging.go:129] Date: Thu, 01 Oct 2015 07:40:27 GMT Oct 01 07:40:27 [4196]: I1001 07:40:27.104168 4196 openstack.go:164] openstack.Instances() called Oct 01 07:40:27 [4196]: I1001 07:40:27.133478 4196 openstack.go:201] Found 8 compute flavors Oct 01 07:40:27 [4196]: I1001 07:40:27.133519 4196 openstack.go:202] Claiming to support Instances Oct 01 07:40:27 [4196]: E1001 07:40:27.158908 4196 kubelet.go:846] Unable to construct api.Node object for kubelet: failed to get external ID from cloud provider: Failed to find object Oct 01 07:40:27 [4196]: I1001 07:40:27.202978 4196 iowatcher.go:102] Unexpected EOF during watch stream event decoding: unexpected EOF Oct 01 07:40:27 [4196]: I1001 07:40:27.203110 4196 reflector.go:294] pkg/client/unversioned/cache/reflector.go:87: Unexpected watch close - watch lasted less than a second and no items received Oct 01 07:40:27 [4196]: W1001 07:40:27.203136 4196 reflector.go:224] pkg/client/unversioned/cache/reflector.go:87: watch of *api.Service ended with: very short watch Oct 01 07:40:27 [4196]: I1001 07:40:27.275208 4196 debugging.go:101] curl -k -v -XGET -H "Authorization: Bearer rhARkbozkWcrJyvdLQqF9TNO86KHjOsq" -H "User-Agent: kubelet/v1.1.0 (linux/amd64) kubernetes/196f58b" https://localhost:6443/api/v1/pods?fieldSelector=spec.nodeName%3D192.168.100.80 Oct 01 07:40:27 [4196]: I1001 07:40:27.308434 4196 debugging.go:120] GET https://localhost:6443/api/v1/pods?fieldSelector=spec.nodeName%3D192.168.100.80 200 OK in 33 milliseconds Oct 01 07:40:27 [4196]: I1001 07:40:27.308464 4196 debugging.go:126] Response Headers: Oct 01 07:40:27 [4196]: I1001 07:40:27.308475 4196 debugging.go:129] Content-Type: application/json Oct 01 07:40:27 [4196]: I1001 07:40:27.308484 4196 debugging.go:129] Date: Thu, 01 Oct 2015 07:40:27 GMT Oct 01 07:40:27 [4196]: I1001 07:40:27.308491 4196 debugging.go:129] Content-Length: 113 Oct 01 07:40:27 [4196]: I1001 07:40:27.308524 4196 request.go:755] Response Body: {"kind":"PodList","apiVersion":"v1","metadata":{"selfLink":"/api/v1/pods","resourceVersion":"172941"},"items":[]} Oct 01 07:40:27 [4196]: I1001 07:40:27.308719 4196 config.go:252] Setting pods for source api Oct 01 07:40:27 [4196]: I1001 07:40:27.308753 4196 kubelet.go:1921] SyncLoop (REMOVE): "fluentd-elasticsearch-192.168.100.80_kube-system" Oct 01 07:40:27 [4196]: I1001 07:40:27.308931 4196 volumes.go:100] Used volume plugin "kubernetes.io/host-path" for varlog Oct 01 07:40:27 [4196]: I1001 07:40:27.308960 4196 volumes.go:100] Used volume plugin "kubernetes.io/host-path" for varlibdockercontainers Oct 01 07:40:27 [4196]: I1001 07:40:27.308977 4196 kubelet.go:2531] Generating status for "fluentd-elasticsearch-192.168.100.80_kube-system"

$ kubectl version

 Client Version: version.Info{Major:"1", Minor:"1+", GitVersion:"v1.1.0-alpha.1.390+196f58b9cb25a2", GitCommit:"196f58b9cb25a2222c7f9aacd624737910b03acb", GitTreeState:"clean"} Server Version: version.Info{Major:"1", Minor:"1+", GitVersion:"v1.1.0-alpha.1.390+196f58b9cb25a2", GitCommit: "196f58b9cb25a2222c7f9aacd624737910b03acb", GitTreeState:"clean"}

$ cat / etc / os-release

 NAME="CentOS Linux" VERSION="7 (Core)" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="7" PRETTY_NAME="CentOS Linux 7 (Core)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:centos:centos:7" HOME_URL="https://www.centos.org/" BUG_REPORT_URL="https://bugs.centos.org/" CENTOS_MANTISBT_PROJECT="CentOS-7" CENTOS_MANTISBT_PROJECT_VERSION="7" REDHAT_SUPPORT_PRODUCT="centos" REDHAT_SUPPORT_PRODUCT_VERSION="7"

$ cat / etc / kubernetes / kubelet

 ### # kubernetes kubelet (node) config # The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces) KUBELET_ADDRESS="--address=0.0.0.0" # The port for the info server to serve on # KUBELET_PORT="--port=10250" # You may leave this blank to use the actual hostname KUBELET_HOSTNAME="--hostname_override=192.168.100.80" # location of the api-server KUBELET_API_SERVER="--api_servers=https://localhost:6443" # Add your own! KUBELET_ARGS="--cluster_dns=10.100.0.10 --cluster_domain=cluster.local --kubeconfig=/etc/kubernetes/kubelet.kubeconfig --config=/etc/kubernetes/manifests --v=9 --cloud-config=/etc/kubernetes/cloud_config --cloud-provider=openstack --machine-id-file=/etc/machine-id"

$ cat / etc / kubernetes / cloud_config

 [Global] auth-url=https://api.*******.de:5000/v2.0 username=username password=password region=RegionOne tenant-id=4ee7b21351d94f2b96d363efe131b833
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1 answer

Kubelet can reach Openstack, however it does not find this node in the list of servers, this tenant has this region. Oct 01 07:40:27 [4196]: I1001 07:40:27.133478 4196 openstack.go:201] Found 8 compute flavors Oct 01 07:40:27 [4196]: E1001 07:40:27.158908 4196 kubelet.go:846] Unable to construct api.Node object for kubelet: failed to get external ID from cloud provider: Failed to find object

Node host name is used to identify it from the list of servers provided by the cloud provider. However, you can override it using the --hostname_overide flag.

In your configuration, I see that you redefined it using ip, if this does not match the name of the server that Nova reports, you will probably get this error.

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Source: https://habr.com/ru/post/1232683/

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