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Kube-list-configmap:快速查看Kubernetes ConfigMap

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下载需积分: 9 | 61KB | 更新于2024-12-04 | 91 浏览量 | 0 下载量 举报 收藏
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ConfigMap是Kubernetes中一种存储配置信息的资源类型,它可以让用户将非敏感配置信息与容器镜像解耦,提高应用的可移植性。使用kube-list-configmap插件,用户可以更加便捷地管理和查看当前Kubernetes集群中的所有ConfigMap资源。 ConfigMap的创建和使用是Kubernetes中常见的一种操作,它可以存储配置数据作为键值对,或直接存储配置文件,并且可以被Pods引用。ConfigMap的创建可以通过kubectl命令行工具、配置文件等方式进行。引用ConfigMap的Pods可以通过环境变量、卷挂载等方式读取其中的数据。 该插件是由Go语言开发的,Go是一种编译型、静态类型语言,被设计得简洁、快速且安全。它在云计算和微服务架构中尤为流行,因为Go能够提供高性能的并发处理能力,这对于管理容器和服务尤其重要。使用Go语言开发的kubectl插件,通常具有良好的性能和稳定性。 通过执行以下命令,用户可以安装kube-list-configmap插件: ``` kubectl krew install kube-list-configmap ``` 安装完成后,用户就可以通过以下命令来使用该插件列出当前命名空间下的所有ConfigMap资源: ``` kubectl kube-list-configmap ``` 如果需要查看所有命名空间下的ConfigMap资源,可以添加相应的参数,具体命令如下: ``` kubectl kube-list-configmap --all-namespaces ``` 这将帮助用户快速地获取集群中ConfigMap的概览,包括其名称、创建时间和相关的命名空间等信息,便于进行后续的管理和调整操作。 使用kube-list-configmap插件可以大幅提高工作效率,特别是在大规模部署和管理Kubernetes集群时。插件本身作为kubectl的扩展,不仅易于安装,而且易于使用,无需用户掌握复杂的操作或编写额外的脚本。" 以上内容详细阐述了kube-list-configmap插件的用途、操作方法以及相关技术细节,包括ConfigMap在Kubernetes中的作用,Go语言在开发该插件中的应用,以及如何安装和使用kube-list-configmap插件。这些知识点对于理解Kubernetes集群管理和配置数据管理具有重要意义。

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--- kind: Namespace apiVersion: v1 metadata: name: kube-flannel labels: k8s-app: flannel pod-security.kubernetes.io/enforce: privileged --- kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1 metadata: labels: k8s-app: flannel name: flannel rules: - apiGroups: - "" resources: - pods verbs: - get - apiGroups: - "" resources: - nodes verbs: - get - list - watch - apiGroups: - "" resources: - nodes/status verbs: - patch --- kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata: labels: k8s-app: flannel name: flannel roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: flannel subjects: - kind: ServiceAccount name: flannel namespace: kube-flannel --- apiVersion: v1 kind: ServiceAccount metadata: labels: k8s-app: flannel name: flannel namespace: kube-flannel --- kind: ConfigMap apiVersion: v1 metadata: name: kube-flannel-cfg namespace: kube-flannel labels: tier: node k8s-app: flannel app: flannel data: cni-conf.json: | { "name": "cbr0", "cniVersion": "0.3.1", "plugins": [ { "type": "flannel", "delegate": { "hairpinMode": true, "isDefaultGateway": true } }, { "type": "portmap", "capabilities": { "portMappings": true } } ] } net-conf.json: | { "Network": "10.244.0.0/16", "EnableNFTables": false, "Backend": { "Type": "vxlan" } } --- apiVersion: apps/v1 kind: DaemonSet metadata: name: kube-flannel-ds namespace: kube-flannel labels: tier: node app: flannel k8s-app: flannel spec: selector: matchLabels: app: flannel template: metadata: labels: tier: node app: flannel spec: affinity: nodeAffinity: requiredDuringSchedulingIgnoredDuringExecution: nodeSelectorTerms: - matchExpressions: - key: kubernetes.io/os operator: In values: - linux hostNetwork: true priorityClassName: system-node-critical tolerations: - operator: Exists effect: NoSchedule serviceAccountName: flannel initContainers: - name: install-cni-plugin image: ghcr.io/flannel-io/flannel-cni-plugin:v1.7.1-flannel1 command: - cp args: - -f - /flannel - /opt/cni/bin/flannel volumeMounts: - name: cni-plugin mountPath: /opt/cni/bin - name: install-cni image: ghcr.io/flannel-io/flannel:v0.27.0 command: - cp args: - -f - /etc/kube-flannel/cni-conf.json - /etc/cni/net.d/10-flannel.conflist volumeMounts: - name: cni mountPath: /etc/cni/net.d - name: flannel-cfg mountPath: /etc/kube-flannel/ containers: - name: kube-flannel image: ghcr.io/flannel-io/flannel:v0.27.0 command: - /opt/bin/flanneld args: - --ip-masq - --kube-subnet-mgr resources: requests: cpu: "100m" memory: "50Mi" securityContext: privileged: false capabilities: add: ["NET_ADMIN", "NET_RAW"] env: - name: POD_NAME valueFrom: fieldRef: fieldPath: metadata.name - name: POD_NAMESPACE valueFrom: fieldRef: fieldPath: metadata.namespace - name: EVENT_QUEUE_DEPTH value: "5000" - name: CONT_WHEN_CACHE_NOT_READY value: "false" volumeMounts: - name: run mountPath: /run/flannel - name: flannel-cfg mountPath: /etc/kube-flannel/ - name: xtables-lock mountPath: /run/xtables.lock volumes: - name: run hostPath: path: /run/flannel - name: cni-plugin hostPath: path: /opt/cni/bin - name: cni hostPath: path: /etc/cni/net.d - name: flannel-cfg configMap: name: kube-flannel-cfg - name: xtables-lock hostPath: path: /run/xtables.lock type: FileOrCreate

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Error from server (Forbidden): error when retrieving current configuration of: Resource: "policy/v1, Resource=poddisruptionbudgets", GroupVersionKind: "policy/v1, Kind=PodDisruptionBudget" Name: "calico-kube-controllers", Namespace: "kube-system" from server for: "calico.yaml": poddisruptionbudgets.policy "calico-kube-controllers" is forbidden: User "system:node:master" cannot get resource "poddisruptionbudgets" in API group "policy" in the namespace "kube-system" Error from server (Forbidden): error when retrieving current configuration of: Resource: "/v1, Resource=serviceaccounts", GroupVersionKind: "/v1, Kind=ServiceAccount" Name: "calico-kube-controllers", Namespace: "kube-system" from server for: "calico.yaml": serviceaccounts "calico-kube-controllers" is forbidden: User "system:node:master" cannot get resource "serviceaccounts" in API group "" in the namespace "kube-system": can only create tokens for individual service accounts Error from server (Forbidden): error when retrieving current configuration of: Resource: "/v1, Resource=serviceaccounts", GroupVersionKind: "/v1, Kind=ServiceAccount" Name: "calico-node", Namespace: "kube-system" from server for: "calico.yaml": serviceaccounts "calico-node" is forbidden: User "system:node:master" cannot get resource "serviceaccounts" in API group "" in the namespace "kube-system": can only create tokens for individual service accounts Error from server (Forbidden): error when retrieving current configuration of: Resource: "/v1, Resource=configmaps", GroupVersionKind: "/v1, Kind=ConfigMap" Name: "calico-config", Namespace: "kube-system" from server for: "calico.yaml": configmaps "calico-config" is forbidden: User "system:node:master" cannot get resource "configmaps" in API group "" in the namespace "kube-system": no relationship found between node 'master' and this object Error from server (Forbidden): error when retrieving current configuration of: Resource: "apiextensions.k8s.io/v1, Resource=customresourcedefinitions", GroupVersionKind: "apiextensions.k8s.io/v1, Kind=CustomResourceDefinition" Name: "bgpconfigurations.crd.projectcalico.org", Namespace: "" from server for: "calico.yaml": customresourcedefinitions.apiextensions.k8s.io "bgpconfigurations.crd.projectcalico.org" is forbidden: User "system:node:master" cannot get resource "customresourcedefinitions" in API group "apiextensions.k8s.io" at the cluster scope Error from server (Forbidden): error when retrieving current configuration of: Resource: "apiextensions.k8s.io/v1, Resource=customresourcedefinitions", GroupVersionKind: "apiextensions.k8s.io/v1, Kind=CustomResourceDefinition" Name: "bgppeers.crd.projectcalico.org", Namespace: "" from server for: "calico.yaml": customresourcedefinitions.apiextensions.k8s.io "bgppeers.crd.projectcalico.org" is forbidden: User "system:node:master" cannot get resource "customresourcedefinitions" in API group "apiextensions.k8s.io" at the cluster scope Error from server (Forbidden): error when retrieving current configuration of: Resource: "apiextensions.k8s.io/v1, Resource=customresourcedefinitions", GroupVersionKind: "apiextensions.k8s.io/v1, Kind=CustomResourceDefinition" Name: "blockaffinities.crd.projectcalico.org", Namespace: "" 如何处理

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