当我提供hostpath时，它表明它是只读文件系统，因为我是kubernetes的新手，我没有找到其他任何方法，请告知我，还有其他实现卷的方法，我正在这样做在GKE上
这是我的yaml代码
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "10"
creationTimestamp: "2019-11-22T10:52:16Z"
generation: 17
labels:
app: dataset
name: dataset
namespace: default
resourceVersion: "283767"
selfLink: /apis/apps/v1/namespaces/default/deployments/dataset
uid: 26111fe8-0d16-11ea-a66e-42010aa00042
spec:
progressDeadlineSeconds: 600
replicas: 2
revisionHistoryLimit: 10
selector:
matchLabels:
app: dataset
strategy:
rollingUpdate:
maxSurge: 25%
maxUnavailable: 25%
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
app: dataset
spec:
containers:
- env:
- name: RABBIT_MQ_HOST
valueFrom:
configMapKeyRef:
key: RABBIT_MQ_HOST
name: dataset-config
- name: RABBIT_MQ_USER
valueFrom:
configMapKeyRef:
key: RABBIT_MQ_USER
name: dataset-config
- name: RABBIT_MQ_PASSWORD
valueFrom:
configMapKeyRef:
key: RABBIT_MQ_PASSWORD
name: dataset-config
- name: DATASET_DB_HOST
valueFrom:
configMapKeyRef:
key: DATASET_DB_HOST
name: dataset-config
- name: DATASET_DB_NAME
valueFrom:
configMapKeyRef:
key: DATASET_DB_NAME
name: dataset-config
- name: LICENSE_SERVER
valueFrom:
configMapKeyRef:
key: LICENSE_SERVER
name: dataset-config
- name: DATASET_THUMBNAIL_SIZE
valueFrom:
configMapKeyRef:
key: DATASET_THUMBNAIL_SIZE
name: dataset-config
- name: GATEWAY_URL
valueFrom:
configMapKeyRef:
key: GATEWAY_URL
name: dataset-config
- name: DEFAULT_DATASOURCE_ID
valueFrom:
configMapKeyRef:
key: DEFAULT_DATASOURCE_ID
name: dataset-config
- name: RABBIT_MQ_QUEUE_NAME
valueFrom:
configMapKeyRef:
key: RABBIT_MQ_QUEUE_NAME
name: dataset-config
- name: RABBIT_MQ_PATTERN
valueFrom:
configMapKeyRef:
key: RABBIT_MQ_PATTERN
name: dataset-config
image: gcr.io/gcr-testing-258008/dataset@sha256:8416ec9b023d4a4587a511b855c2735b25a16dbb1a15531d8974d0ef89ad3d73
imagePullPolicy: IfNotPresent
name: dataset-sha256
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: ./data/uploads
name: dataset-volume-uploads
- mountPath: ./data/thumbnails
name: dataset-volume-thumbnails
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
volumes:
- hostPath:
path: /build/uploads
type: ""
name: dataset-volume-uploads
- hostPath:
path: /build/thumbnails
type: ""
name: dataset-volume-thumbnails
status:
availableReplicas: 2
conditions:
- lastTransitionTime: "2019-11-23T07:19:13Z"
lastUpdateTime: "2019-11-23T07:19:13Z"
message: Deployment has minimum availability.
reason: MinimumReplicasAvailable
status: "True"
type: Available
- lastTransitionTime: "2019-11-23T06:31:03Z"
lastUpdateTime: "2019-11-23T07:24:42Z"
message: ReplicaSet "dataset-75b46f868f" is progressing.
reason: ReplicaSetUpdated
status: "True"
type: Progressing
observedGeneration: 17
readyReplicas: 2
replicas: 3
unavailableReplicas: 1
updatedReplicas: 1
这是我对 pods 的描述
Path: /build/uploads
HostPathType:
dataset-volume-thumbnails:
Type: HostPath (bare host directory volume)
Path: /build/thumbnails
HostPathType:
default-token-x2wmw:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-x2wmw
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 96s default-scheduler Successfully assigned default/dataset-75b46f868f-wffm7 to gke-teric-ai-default-pool-41929025-fxnx
Warning BackOff 15s (x6 over 93s) kubelet, gke-teric-ai-default-pool-41929025-fxnx Back-off restarting failed container
Normal Pulled 2s (x5 over 95s) kubelet, gke-teric-ai-default-pool-41929025-fxnx Container image "gcr.io/gcr-testing-258008/dataset@sha256:8416ec9b023d4a4587a511b855c2735b25a16dbb1a15531d8974d0ef89ad3d73" already present on machine
Normal Created 2s (x5 over 95s) kubelet, gke-teric-ai-default-pool-41929025-fxnx Created container
Warning Failed 1s (x5 over 95s) kubelet, gke-teric-ai-default-pool-41929025-fxnx Error: failed to start container "dataset-sha256": Error response from daemon: error while creating mount source path '/build/uploads': mkdir /build/uploads: read-only file system
所以这是问题所在，即使我动态地给chmod权限也不允许执行写操作。我尝试了持久卷也无法正常工作，所以请告诉我我必须以哪种方式挂载卷。
最佳答案
我能够以root用户身份在我的GKE实例上手动创建两个hostPath。
我想您必须为hostPath指定类型以创建请求目录(如果该目录不存在)。
type: DirectoryOrCreate，您可以阅读有关hostPath和可用类型值的更多信息。而且，如果您使用的是容器内用户的hostPath权限，则必须与节点上的所有权匹配，这样会使它变得更加复杂，当然，您可以以root身份运行它，但是不建议这样做。
总结起来，只需要使用谷歌提供的持久存储。如果遇到权限问题，则可能需要init contaner更改权限，或者必须为容器设置适当的fsGroup。