Question

我使用以下命令

创建了一个3节点azure kubernetes集群

az group create --name ResourceGroup --location canadacentral
az provider register -n Microsoft.ContainerService
az provider register -n Microsoft.Compute
az provider register -n Microsoft.Network

az aks create --resource-group ResourceGroup --name ReplicaSet --node-count 3 --kubernetes-version  1.8.7 --node-vm-size Standard_A0 --generate-ssh-keys

kubectl create -f https://raw.githubusercontent.com/openebs/openebs/master/k8s/openebs-operator.yaml
kubectl create -f https://raw.githubusercontent.com/openebs/openebs/master/k8s/openebs-storageclasses.yaml

随后我创建了一个postgres有状态集，由于opensci没有安装在kubelet上，因此无法启动。

Kubelet logs from Node-1 (where the pgset pod is scheduled)

I0313 05:42:41.910525    7845 reconciler.go:257] operationExecutor.MountVolume started for volume "pvc-a980c1e4-2674-11e8-a384-0a58ac1f03e3" (UniqueName: "kubernetes.io/iscsi/10.0.20.229:3260:iqn.2016-09.com.openebs.jiva:pvc-a980c1e4-2674-11e8-a384-0a58ac1f03e3:0") pod "pgset-0" (UID: "a9826973-2674-11e8-a384-0a58ac1f03e3") 
I0313 05:42:41.910605    7845 operation_generator.go:416] MountVolume.WaitForAttach entering for volume "pvc-a980c1e4-2674-11e8-a384-0a58ac1f03e3" (UniqueName: "kubernetes.io/iscsi/10.0.20.229:3260:iqn.2016-09.com.openebs.jiva:pvc-a980c1e4-2674-11e8-a384-0a58ac1f03e3:0") pod "pgset-0" (UID: "a9826973-2674-11e8-a384-0a58ac1f03e3") DevicePath ""
E0313 05:42:41.910744    7845 iscsi_util.go:207] iscsi: could not read iface default error: 
E0313 05:42:41.910815    7845 nestedpendingoperations.go:264] Operation for "\"kubernetes.io/iscsi/10.0.20.229:3260:iqn.2016-09.com.openebs.jiva:pvc-a980c1e4-2674-11e8-a384-0a58ac1f03e3:0\"" failed. No retries permitted until 2018-03-13 05:44:43.910784094 +0000 UTC (durationBeforeRetry 2m2s). Error: MountVolume.WaitForAttach failed for volume "pvc-a980c1e4-2674-11e8-a384-0a58ac1f03e3" (UniqueName: "kubernetes.io/iscsi/10.0.20.229:3260:iqn.2016-09.com.openebs.jiva:pvc-a980c1e4-2674-11e8-a384-0a58ac1f03e3:0") pod "pgset-0" (UID: "a9826973-2674-11e8-a384-0a58ac1f03e3") : executable file not found in $PATH
E0313 05:43:12.080406    7845 kubelet.go:1628] Unable to mount volumes for pod "pgset-0_default(a9826973-2674-11e8-a384-0a58ac1f03e3)": timeout expired waiting for volumes to attach/mount for pod "default"/"pgset-0". list of unattached/unmounted volumes=[pgdata]; skipping pod
E0313 05:43:12.081262    7845 pod_workers.go:182] Error syncing pod a9826973-2674-11e8-a384-0a58ac1f03e3 ("pgset-0_default(a9826973-2674-11e8-a384-0a58ac1f03e3)"), skipping: timeout expired waiting for volumes to attach/mount for pod "default"/"pgset-0". list of unattached/unmounted volumes=[pgdata]

我的问题是，是否有办法配置并确保在安装并运行openiscsi启动器工具时默认启动kubelet

Answer 1

按照以下步骤在kubelet中手动安装iscsi-initiator：

SSH进入Kubernetes节点
使用sudo docker ps标识运行kubelet的docker容器。
输入kubelet容器shell sudo docker exec -it kubelet_container_id bash
安装open-iscsi。 apt-get update apt install -y open-iscsi

在kubelet上安装openiscsi启动器

1 个答案: