具有特定用户权限的Azure磁盘的永久卷声明



我正在尝试创建一个动态Azure磁盘卷,以便在具有特定权限要求的pod中使用。

容器在用户id472下运行,因此我需要找到一种方法来装载具有(至少(该用户的rw权限的卷。

使用以下StorageClass定义的

apiVersion: storage.k8s.io/v1
kind: StorageClass
provisioner: kubernetes.io/azure-disk
reclaimPolicy: Delete
volumeBindingMode: Immediate
metadata:
name: foo-storage
mountOptions:
- rw
parameters:
cachingmode: None
kind: Managed
storageaccounttype: Standard_LRS

和这个PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: foo-storage
namespace: foo
spec:
accessModes:
- ReadWriteOnce
storageClassName: foo-storage
resources:
requests:
storage: 1Gi

我可以在吊舱中运行以下内容:

containers:
- image: ubuntu
name: foo
imagePullPolicy: IfNotPresent
command:
- ls
- -l
- /var/lib/foo
volumeMounts:
- name: foo-persistent-storage
mountPath: /var/lib/foo
volumes:
- name: foo-persistent-storage
persistentVolumeClaim:
claimName: foo-storage

吊舱将正确安装和启动,但kubectl logs <the-pod>将显示

total 24
drwxr-xr-x 3 root root  4096 Nov 23 11:42 .
drwxr-xr-x 1 root root  4096 Nov 13 12:32 ..
drwx------ 2 root root 16384 Nov 23 11:42 lost+found

即当前目录被安装为CCD_ 4所有并且对于所有其他用户是只读的。

我尝试过在StorageClass中添加一个mountOptions部分,但无论我尝试什么(uid=472user=472等(,我都会在启动时遇到装载错误,例如

mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/plugins/kubernetes.io/azure-disk/mounts/m1019941199 --scope -- mount -t ext4 -o group=472,rw,user=472,defaults /dev/disk/azure/scsi1/lun0 /var/lib/kubelet/plugins/kubernetes.io/azure-disk/mounts/m1019941199
Output: Running scope as unit run-r7165038756bf43e49db934e8968cca8b.scope.
mount: wrong fs type, bad option, bad superblock on /dev/sdc,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.

我也试着从man mount那里得到一些信息,但我没有找到任何有效的东西。

如何配置此存储类、持久卷声明和卷装载,以便运行容器进程的非root用户能够访问装载路径中的写入(和创建子目录(

您需要像下面这样定义pod规范的securityContext,以便它匹配新运行的用户和组id:

securityContext:
runAsUser: 472
fsGroup: 472

稳定的格拉法纳头盔图也以同样的方式进行。请参阅此处配置下的securityContext:https://github.com/helm/charts/tree/master/stable/grafana#configuration

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