是否可以将不同的 pod 挂载到本地持久卷的同一部分?

基本文件夹挂载:/mnt/disks/ssdPod#1 -/mnt/disks/ssd/pod-1Pod#2 -/mnt/disks/ssd/pod-2我只设法将第一个 pod 挂载到基本文件夹，但第二个文件夹无法挂载(因为卷已被占用)这是音量:apiVersion: v1种类:持久卷元数据:名称:example-local-pv规格:容量:存储:5Gi访问模式:- 读写一次持久卷回收策略:删除存储类名称:本地存储当地的:路径:/mnt/disks/ssd节点亲和力:必需的:节点选择器条款:- 匹配表达式:- 密钥:kubernetes.io/hostname接线员:在价值观:- ubuntukuber这是有状态集中的用法:apiVersion: apps/v1beta1种类:StatefulSet元数据:名称:应用程序命名空间:test-ns规格:服务名称:应用程序复制品:2........卷挂载:- 名称:数据挂载路径:/var/lib/app/data体积索赔模板:- 元数据:名称:数据规格:访问模式:[ReadWriteOnce"]存储类名称:本地存储"资源:要求:存储:2Gi所以，我基本上希望每个副本都使用自己的子文件夹 - 如何实现?== 编辑 ==我已经取得了一些进展，我能够使用以下 YAML 将多个副本安装到同一个挂载中(我尝试在其上执行此操作的应用程序是 rabbitmq - 所以我将应用程序名称保留为是)---种类:持久卷api版本:v1元数据:名称:光伏本地命名空间:test-rabbitmq标签:类型:本地规格:存储类名称:本地容量:存储:6Gi访问模式:- 读写一次主机路径:路径:/mnt/磁盘"---种类:PersistentVolumeClaimapi版本:v1元数据:名称:hostpath-pvc命名空间:test-rabbitmq规格:存储类名称:本地访问模式:- 读写一次资源:要求:存储:3Gi选择器:匹配标签:类型:本地---在 StatefulSet 中，我声明了这个卷: 卷:- 名称:rabbitmq-data持久卷声明:声明名称:hostpath-pvc并安装rabbitmq-data".两个 pod 都挂载到同一个文件夹，但不会创建子文件夹 - 这并不可怕，因为默认情况下有 rabbitmq 的子文件夹 - 我会尝试将其扩展到每个 pod 中以使用子文件夹 解决方案 我能够实现上述场景，您需要的是在您的 pv 中使用claimRef"来绑定您的 PVC.请看下面的 pv json 和 statefulset jsonPV-0.json{"kind": "PersistentVolume","apiVersion": "v1",元数据":{"name": "pv-data-vol-0",标签": {类型":本地"}},规格":{容量": {存储":10Gi"},访问模式":[读写一次"],"storageClassName": "本地存储",当地的": {路径":/prafull/data/pv-0"},索赔参考":{命名空间":默认"，名称":数据测试-SF-0"},节点亲和力":{必需的": {节点选择器条款":[{匹配表达式":[{"key": "kubernetes.io/主机名","operator": "在",价值观":[ip-10-0-1-46.ec2.internal"]}]}]}}}}PV-1.json{"kind": "PersistentVolume","apiVersion": "v1",元数据":{"name": "pv-data-vol-1",标签": {类型":本地"}},规格":{容量": {存储":10Gi"},访问模式":[读写一次"],"storageClassName": "本地存储",当地的": {路径":/prafull/data/pv-1"},索赔参考":{命名空间":默认"，名称":数据测试-SF-1"},节点亲和力":{必需的": {节点选择器条款":[{匹配表达式":[{"key": "kubernetes.io/主机名","operator": "在",价值观":[ip-10-0-1-46.ec2.internal"]}]}]}}}}Statefulset.json{"kind": "StatefulSet","apiVersion": "apps/v1beta1",元数据":{"name": "test-sf",标签": {状态":测试-SF"}},规格":{副本":2，模板": {元数据":{标签": {应用程序":测试-SF"},注释":{"pod.alpha.kubernetes.io/initialized": "true"}}......},volumeClaimTemplates":[{元数据":{名称":数据"},规格":{访问模式":[读写一次"],"storageClassName": "本地存储",资源": {要求": {存储":10Gi"}}}}]}}将创建两个 pod，test-sf-0 和 test-sf-1 依次创建两个 PVC data-test-sf-0 和 data-test-sf-1，它们将绑定到 PV-0 和 Pv-1 分别.因此，test-sf-0 将写入 PV-0 中指定的位置，而 test-sf-1 将写入 PV-1 中指定的位置.希望这会有所帮助.Basically, I'm creating a StatefulSet deployment with 2 pods (single host cluster), I would like to that each pod will be able to mount to a base folder in the host, and to a subfolder beneath it:Base folder mount: /mnt/disks/ssdPod#1 - /mnt/disks/ssd/pod-1Pod#2 - /mnt/disks/ssd/pod-2I've managed only to mount the first pod to the base folder, but the 2nd folder cannot mount (as the volume is already taken)This is the volume:apiVersion: v1kind: PersistentVolumemetadata: name: example-local-pvspec: capacity: storage: 5Gi accessModes: - ReadWriteOnce persistentVolumeReclaimPolicy: Delete storageClassName: local-storage local: path: /mnt/disks/ssd nodeAffinity: required: nodeSelectorTerms: - matchExpressions: - key: kubernetes.io/hostname operator: In values: - ubuntukuberThis is the usage in the stateful set:apiVersion: apps/v1beta1kind: StatefulSetmetadata: name: app namespace: test-nsspec: serviceName: app replicas: 2........ volumeMounts: - name: data mountPath: /var/lib/app/datavolumeClaimTemplates: - metadata: name: data spec: accessModes: [ "ReadWriteOnce" ] storageClassName: "local-storage" resources: requests: storage: 2GiSo, i basically would like that each replica would use its own subfolder - how can one achieve it?== EDIT ==I've made some progress, i'm able to mount several replicas into the same mount, using the following YAMLs (the app i'm trying to do it on is rabbitmq - so i'll leave the app name as is)---kind: PersistentVolumeapiVersion: v1metadata: name: pv-local namespace: test-rabbitmq labels: type: localspec: storageClassName: local capacity: storage: 6Gi accessModes: - ReadWriteOnce hostPath: path: "/mnt/disks"---kind: PersistentVolumeClaimapiVersion: v1metadata: name: hostpath-pvc namespace: test-rabbitmqspec: storageClassName: local accessModes: - ReadWriteOnce resources: requests: storage: 3Gi selector: matchLabels: type: local---In the StatefulSet i'm declaring this volume: volumes: - name: rabbitmq-data persistentVolumeClaim: claimName: hostpath-pvcAnd mounting "rabbitmq-data".Both pods mount to the same folder, but will not create subfolders - this is no terrible situation as by default there are rabbitmq's subfolders - i'll try to expand it into each pod to use a subfolder 解决方案 I am able to achieve the above scenario, what you need is "claimRef" in your pv to bind your PVC. Please have a look at following pv json and statefulset jsonPV-0.json{ "kind": "PersistentVolume", "apiVersion": "v1", "metadata": { "name": "pv-data-vol-0", "labels": { "type": "local" } }, "spec": { "capacity": { "storage": "10Gi" }, "accessModes": [ "ReadWriteOnce" ], "storageClassName": "local-storage", "local": { "path": "/prafull/data/pv-0" }, "claimRef": { "namespace": "default", "name": "data-test-sf-0" }, "nodeAffinity": { "required": { "nodeSelectorTerms": [ { "matchExpressions": [ { "key": "kubernetes.io/hostname", "operator": "In", "values": [ "ip-10-0-1-46.ec2.internal" ] } ] } ] } } }}PV-1.json{ "kind": "PersistentVolume", "apiVersion": "v1", "metadata": { "name": "pv-data-vol-1", "labels": { "type": "local" } }, "spec": { "capacity": { "storage": "10Gi" }, "accessModes": [ "ReadWriteOnce" ], "storageClassName": "local-storage", "local": { "path": "/prafull/data/pv-1" }, "claimRef": { "namespace": "default", "name": "data-test-sf-1" }, "nodeAffinity": { "required": { "nodeSelectorTerms": [ { "matchExpressions": [ { "key": "kubernetes.io/hostname", "operator": "In", "values": [ "ip-10-0-1-46.ec2.internal" ] } ] } ] } } }}Statefulset.json{ "kind": "StatefulSet", "apiVersion": "apps/v1beta1", "metadata": { "name": "test-sf", "labels": { "state": "test-sf" } }, "spec": { "replicas": 2, "template": { "metadata": { "labels": { "app": "test-sf" }, "annotations": { "pod.alpha.kubernetes.io/initialized": "true" } } ... ... }, "volumeClaimTemplates": [ { "metadata": { "name": "data" }, "spec": { "accessModes": [ "ReadWriteOnce" ], "storageClassName": "local-storage", "resources": { "requests": { "storage": "10Gi" } } } } ] }}There will be two pods created test-sf-0 and test-sf-1 which in-turn will be created two PVC data-test-sf-0 and data-test-sf-1 which will be bound to PV-0 and Pv-1 respectively. Hence test-sf-0 will write to the location specified in PV-0 and test-sf-1 will write in location specified on PV-1. Hope this helps. 这篇关于是否可以将不同的 pod 挂载到本地持久卷的同一部分?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！