在我的docker镜像中，我有一个目录/opt/myapp/etc，其中包含一些文件和目录。我想为我的应用创建statefulset。在该有状态集中，我将创建持久卷声明并附加到/opt/myapp/etc。 Statefulset yaml附在下面。在这种情况下，谁能告诉我如何将体积附加到容器上？
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: statefulset
labels:
app: myapp
spec:
serviceName: myapp
replicas: 1
selector:
matchLabels:
app: myapp
template:
metadata:
labels:
app: myapp
spec:
containers:
- image: 10.1.23.5:5000/redis
name: redis
ports:
- containerPort: 6379
name: redis-port
- image: 10.1.23.5:5000/myapp:18.1
name: myapp
ports:
- containerPort: 8181
name: port
volumeMounts:
- name: data
mountPath: /opt/myapp/etc
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: standard
resources:
requests:
storage: 5Gi
这是describe pod的输出
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 3m (x4 over 3m) default-scheduler pod has unbound PersistentVolumeClaims
Normal Scheduled 3m default-scheduler Successfully assigned controller-statefulset-0 to dev-k8s-2
Normal SuccessfulMountVolume 3m kubelet, dev-k8s-2 MountVolume.SetUp succeeded for volume "default-token-xpskd"
Normal SuccessfulAttachVolume 3m attachdetach-controller AttachVolume.Attach succeeded for volume "pvc-77d2cef8-a674-11e8-9358-fa163e3294c1"
Normal SuccessfulMountVolume 3m kubelet, dev-k8s-2 MountVolume.SetUp succeeded for volume "pvc-77d2cef8-a674-11e8-9358-fa163e3294c1"
Normal Pulling 2m kubelet, dev-k8s-2 pulling image "10.1.23.5:5000/redis"
Normal Pulled 2m kubelet, dev-k8s-2 Successfully pulled image "10.1.23.5:5000/redis"
Normal Created 2m kubelet, dev-k8s-2 Created container
Normal Started 2m kubelet, dev-k8s-2 Started container
Normal Pulled 1m (x4 over 2m) kubelet, dev-k8s-2 Container image "10.1.23.5:5000/myapp:18.1" already present on machine
Normal Created 1m (x4 over 2m) kubelet, dev-k8s-2 Created container
Normal Started 1m (x4 over 2m) kubelet, dev-k8s-2 Started container
Warning BackOff 1m (x7 over 2m) kubelet, dev-k8s-2 Back-off restarting failed container
存储类定义
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
name: standard
namespace: controller
provisioner: kubernetes.io/cinder
reclaimPolicy: Retain
parameters:
availability: nova
最佳答案
检查集群中是否定义了存储类。kubectl get storageclass 如果您使用默认存储类作为主机路径(在minikube的情况下)，则无需在模板中包括存储类。volumeClaimTemplates:- metadata: name: data spec: accessModes: [ "ReadWriteOnce" ] resources: requests: storage: 5Gi通过不指定任何存储类，k8将继续进行操作，并使用默认存储类(在minikube情况下为主机路径)来调度持久卷，并确保/opt/myapp/etc存在于要调度pod的节点上。
关于docker - 向容器中的现有文件添加持久卷声明，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51977515/