Question

在我的Kubernetes集群中，Rancher在创建持久卷声明并应用Pod之后再也不会创建持久卷。

解决方案/解决方法在第二次更新中可用。

集群已与Kubespray一起安装。 inventory/myclster/group_vars/k8s-cluster/addons.yml中的本地路径配置的配置：

# Rancher Local Path Provisioner
local_path_provisioner_enabled: true
# local_path_provisioner_namespace: "local-path-storage"
# local_path_provisioner_storage_class: "local-path"
# local_path_provisioner_reclaim_policy: Delete
# local_path_provisioner_claim_root: /opt/local-path-provisioner/
# local_path_provisioner_debug: false
# local_path_provisioner_image_repo: "rancher/local-path-provisioner"
# local_path_provisioner_image_tag: "v0.0.14"
# local_path_provisioner_helper_image_repo: "busybox"
# local_path_provisioner_helper_image_tag: "latest"

# Local volume provisioner deployment
local_volume_provisioner_enabled: false
# local_volume_provisioner_namespace: kube-system
# local_volume_provisioner_nodelabels:
#   - kubernetes.io/hostname
#   - topology.kubernetes.io/region
#   - topology.kubernetes.io/zone
# local_volume_provisioner_storage_classes:
#   local-storage:
#     host_dir: /mnt/disks
#     mount_dir: /mnt/disks
#     volume_mode: Filesystem
#     fs_type: ext4
#   fast-disks:
#     host_dir: /mnt/fast-disks
#     mount_dir: /mnt/fast-disks
#     block_cleaner_command:
#       - "/scripts/shred.sh"
#       - "2"
#     volume_mode: Filesystem
#     fs_type: ext4

重新创建问题的步骤：

创建PVC：
kubectl create -f https://raw.githubusercontent.com/rancher/local-path-provisioner/master/examples/pvc.yaml

结果：已创建PVC，名称local-path-pvc，状态待定，存储类local-path

创建Pod
kubectl create -f https://raw.githubusercontent.com/rancher/local-path-provisioner/master/examples/pod.yaml

结果：
已创建Pod，名称为create-pvc-123，状态为Waiting：ContainerCreating。

用kubectl描述Pod：

Events:  
  Type     Reason            Age        From  Message
  ----     ------            ----       ----  -------
  Warning  FailedScheduling  <unknown>        error while running "VolumeBinding" prebind plugin for pod "create-pvc-123": Failed to bind volumes: timed out waiting for the condition

我尝试了不同的图表，并且在所有情况下都没有创建持久卷。存在ServiceAccount本地路径提供程序服务帐户。本地路径供应器的部署有一个Pod。

更新
在服务器上，日志包含几个错误，sudo journalctl -xeu kubelet | grep 'fail'：

...
Oct 12 16:53:36 node1 kubelet[274306]: E1012 16:53:36.000246  274306 nestedpendingoperations.go:301] Operation for "{volumeName:kubernetes.io/configmap/71b44438-fadb-4859-a788-8d911dfab2db-script podName:71b44438-fadb-4859-a788-8d911dfab2db nodeName:}" failed. No retries permitted until 2020-10-12 16:54:40.000164134 +0200 CEST m=+9380.643933974 (durationBeforeRetry 1m4s). Error: "MountVolume.SetUp failed for volume \"script\" (UniqueName: \"kubernetes.io/configmap/71b44438-fadb-4859-a788-8d911dfab2db-script\") pod \"create-pvc-80d115d9-98fd-4fcd-9e41-55b74f809efb\" (UID: \"71b44438-fadb-4859-a788-8d911dfab2db\") : configmap references non-existent config key: setup"
Oct 12 16:53:36 node1 kubelet[274306]: E1012 16:53:36.404015  274306 nestedpendingoperations.go:301] Operation for "{volumeName:kubernetes.io/configmap/424b196e-5132-479a-8b95-63e41e0ea124-script podName:424b196e-5132-479a-8b95-63e41e0ea124 nodeName:}" failed. No retries permitted until 2020-10-12 16:54:40.403980548 +0200 CEST m=+9381.047750378 (durationBeforeRetry 1m4s). Error: "MountVolume.SetUp failed for volume \"script\" (UniqueName: \"kubernetes.io/configmap/424b196e-5132-479a-8b95-63e41e0ea124-script\") pod \"create-pvc-3b132d90-8812-4391-bc29-966ee47bee0d\" (UID: \"424b196e-5132-479a-8b95-63e41e0ea124\") : configmap references non-existent config key: setup"
Oct 12 16:54:40 node1 kubelet[274306]: E1012 16:54:40.464999  274306 nestedpendingoperations.go:301] Operation for "{volumeName:kubernetes.io/configmap/424b196e-5132-479a-8b95-63e41e0ea124-script podName:424b196e-5132-479a-8b95-63e41e0ea124 nodeName:}" failed. No retries permitted until 2020-10-12 16:56:42.464936126 +0200 CEST m=+9503.108706016 (durationBeforeRetry 2m2s). Error: "MountVolume.SetUp failed for volume \"script\" (UniqueName: \"kubernetes.io/configmap/424b196e-5132-479a-8b95-63e41e0ea124-script\") pod \"create-pvc-3b132d90-8812-4391-bc29-966ee47bee0d\" (UID: \"424b196e-5132-479a-8b95-63e41e0ea124\") : configmap references non-existent config key: setup"

更新-解决方案？
我按照docs中的说明更改了ConfigMap'local-path-config'。
但是，Kubespray中的jinja template在配置中缺少属性'setup'和'teardown'。

当我添加de setup和teardown属性时，Kubernetes创建了PV并启动了Pod。

Kubespray没有在模板中提供这些属性的原因是什么？

Answer 1

kubespray 应该使用的默认版本是 local_path_provisioner_image_tag: "v0.0.14"。我想模板的来源是 https://github.com/rancher/local-path-provisioner/blob/v0.0.14/deploy/example-config.yaml。它没有设置和拆卸属性，它们是在 v0.0.15 中引入的。

本地路径供应商从未创建过Kubernetes持久卷

1 个答案: