我正在尝试使用单个容器创建一个Kubernetes容器,该容器上安装了两个外部卷。我的.yml pod文件是:
apiVersion: v1
kind: Pod
metadata:
name: my-project
labels:
name: my-project
spec:
containers:
- image: my-username/my-project
name: my-project
ports:
- containerPort: 80
name: nginx-http
- containerPort: 443
name: nginx-ssl-https
imagePullPolicy: Always
volumeMounts:
- mountPath: /home/projects/my-project/media/upload
name: pd-data
- mountPath: /home/projects/my-project/backups
name: pd2-data
imagePullSecrets:
- name: vpregistrykey
volumes:
- name: pd-data
persistentVolumeClaim:
claimName: pd-claim
- name: pd2-data
persistentVolumeClaim:
claimName: pd2-claim
我正在使用Persistent Volumes和Persisten Volume Claims,因此:
PV
apiVersion: v1
kind: PersistentVolume
metadata:
name: pd-disk
labels:
name: pd-disk
spec:
capacity:
storage: 250Gi
accessModes:
- ReadWriteOnce
gcePersistentDisk:
pdName: "pd-disk"
fsType: "ext4"
PVC
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: pd-claim
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 250Gi
我最初使用以下命令创建了我的磁盘:
$ gcloud compute disks create --size 250GB pd-disk
第二个磁盘和第二个PV和PVC也是如此。当我创建pod时,一切似乎都能正常工作,不会抛出任何错误。现在出现了一个奇怪的部分:其中一条路径正确安装(并且因此是持久的)而另一条路径正在每次重新启动吊舱时被删除...
我尝试过从头开始重新创建所有内容,但没有任何变化。此外,从pod描述中,两个卷似乎都已正确安装:
$ kubectl describe pod my-project
Name: my-project
...
Volumes:
pd-data:
Type: PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
ClaimName: pd-claim
ReadOnly: false
pd2-data:
Type: PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
ClaimName: pd2-claim
ReadOnly: false
感谢任何帮助。感谢。
答案 0 :(得分:0)
我没有看到发生上述行为的任何直接问题!但是,我想请您尝试的是使用“部署”而不是建议的“ {Pod”,但建议使用许多here,尤其是在使用PV和PVC时。 Deployment会处理许多事情以维持“期望状态”。我在下面附上了我的代码,以供您参考,并且即使在删除/终止/重新启动之后,这两个卷也是永久的,因为这是由部署的所需状态管理的。
您在我的代码中发现的两个区别是:
部署yml。
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: nginx
namespace: platform
labels:
component: nginx
spec:
replicas: 2
strategy:
type: RollingUpdate
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
template:
metadata:
labels:
component: nginx
spec:
nodeSelector:
role: app-1
containers:
- name: nginx
image: vip-intOAM:5001/nginx:1.15.3
imagePullPolicy: IfNotPresent
volumeMounts:
- mountPath: "/etc/nginx/conf.d/"
name: nginx-confd
- mountPath: "/var/www/"
name: nginx-web-content
volumes:
- name: nginx-confd
persistentVolumeClaim:
claimName: glusterfsvol-nginx-confd-pvc
- name: nginx-web-content
persistentVolumeClaim:
claimName: glusterfsvol-nginx-web-content-pvc
我的PV之一
apiVersion: v1
kind: PersistentVolume
metadata:
name: glusterfsvol-nginx-confd-pv
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteOnce
glusterfs:
endpoints: gluster-cluster
path: nginx-confd
readOnly: false
persistentVolumeReclaimPolicy: Retain
claimRef:
name: glusterfsvol-nginx-confd-pvc
namespace: platform
以上的PVC
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: glusterfsvol-nginx-confd-pvc
namespace: platform
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
答案 1 :(得分:0)
Kubernetes documentation指出:
卷无法装载到其他卷上,或具有到其他卷的硬链接 卷
我遇到了同样的问题,在我的情况下,问题是两个卷挂载都有重叠的mountPath,即都是以/ var /开头。
它们在安装后没有问题。