容器编排技术 -- Kubernetes kubectl get 命令详解

作者：小丑西瓜9 | 2024-02-28 22:11:13

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kubectl get

获取列出一个或多个资源的信息。

可以使用的资源包括：

all
certificatesigningrequests (aka 'csr')
clusterrolebindings
clusterroles
clusters (valid only for federation apiservers)
componentstatuses (aka 'cs')
configmaps (aka 'cm')
controllerrevisions
cronjobs
daemonsets (aka 'ds')
deployments (aka 'deploy')
endpoints (aka 'ep')
events (aka 'ev')
horizontalpodautoscalers (aka 'hpa')
ingresses (aka 'ing')
jobs
limitranges (aka 'limits')
namespaces (aka 'ns')
networkpolicies (aka 'netpol')
nodes (aka 'no')
persistentvolumeclaims (aka 'pvc')
persistentvolumes (aka 'pv')
poddisruptionbudgets (aka 'pdb')
podpreset
pods (aka 'po')
podsecuritypolicies (aka 'psp')
podtemplates
replicasets (aka 'rs')
replicationcontrollers (aka 'rc')
resourcequotas (aka 'quota')
rolebindings
roles
secrets
serviceaccounts (aka 'sa')
services (aka 'svc')
statefulsets
storageclasses
thirdpartyresources

语法

$ get [(-o|--output=)json|yaml|wide|custom-columns=...|custom-columns-file=...|go-template=...|go-template-file=...|jsonpath=...|jsonpath-file=...] (TYPE [NAME | -l label] | TYPE/NAME ...) [flags]

示例

列出所有运行的Pod信息。

kubectl get pods

列出Pod以及运行Pod节点信息。

kubectl get pods -o wide

列出指定NAME的 replication controller信息。

kubectl get replicationcontroller web

以JSON格式输出一个pod信息。

kubectl get -o json pod web-pod-13je7

以“pod.yaml”配置文件中指定资源对象和名称输出JSON格式的Pod信息。

kubectl get -f pod.yaml -o json

返回指定pod的相位值。

kubectl get -o template pod/web-pod-13je7 --template={{.status.phase}}

列出所有replication controllers和service信息。

kubectl get rc,services

按其资源和名称列出相应信息。

kubectl get rc/web service/frontend pods/web-pod-13je7

列出所有不同的资源对象。

kubectl get all

Flags

Name	Shorthand	Default	Usage
all-namespaces		false	If present, list the requested object(s) across all namespaces. Namespace in current context is ignored even if specified with --namespace.
allow-missing-template-keys		true	If true, ignore any errors in templates when a field or map key is missing in the template. Only applies to golang and jsonpath output formats.
experimental-use-openapi-print-columns		false	If true, use x-kubernetes-print-column metadata (if present) from openapi schema for displaying a resource.
export		false	If true, use 'export' for the resources. Exported resources are stripped of cluster-specific information.
filename	f	[]	Filename, directory, or URL to files identifying the resource to get from a server.
ignore-not-found		false	Treat "resource not found" as a successful retrieval.
include-extended-apis		true	If true, include definitions of new APIs via calls to the API server. [default true]
label-columns	L	[]	Accepts a comma separated list of labels that are going to be presented as columns. Names are case-sensitive. You can also use multiple flag options like -L label1 -L label2...
no-headers		false	When using the default or custom-column output format, don't print headers (default print headers).
output	o		Output format. One of: json\|yaml\|wide\|name\|custom-columns=...\|custom-columns-file=...\|go-template=...\|go-template-file=...\|jsonpath=...\|jsonpath-file=... See custom columns [http://kubernetes.io/docs/user-guide/kubectl-overview/#custom-columns], golang template [http://golang.org/pkg/text/template/#pkg-overview] and jsonpath template [http://kubernetes.io/docs/user-guide/jsonpath].
output-version			DEPRECATED: To use a specific API version, fully-qualify the resource, version, and group (for example: 'jobs.v1.batch/myjob').
raw			Raw URI to request from the server. Uses the transport specified by the kubeconfig file.
recursive	R	false	Process the directory used in -f, --filename recursively. Useful when you want to manage related manifests organized within the same directory.
schema-cache-dir		~/.kube/schema	If non-empty, load/store cached API schemas in this directory, default is '$HOME/.kube/schema'
selector	l		Selector (label query) to filter on, supports '=', '==', and '!='.
show-all	a	false	When printing, show all resources (default hide terminated pods.)
show-kind		false	If present, list the resource type for the requested object(s).
show-labels		false	When printing, show all labels as the last column (default hide labels column)
sort-by			If non-empty, sort list types using this field specification. The field specification is expressed as a JSONPath expression (e.g. '{.metadata.name}'). The field in the API resource specified by this JSONPath expression must be an integer or a string.
template			Template string or path to template file to use when -o=go-template, -o=go-template-file. The template format is golang templates [http://golang.org/pkg/text/template/#pkg-overview].
watch	w	false	After listing/getting the requested object, watch for changes.
watch-only		false	Watch for changes to the requested object(s), without listing/getting first.

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