容器编排技术 -- Kubernetes kubectl create configmap 命令详解

原文链接： http://docs.kubernetes.org.cn/533.html

容器编排技术 -- Kubernetes kubectl create configmap 命令详解

 

• 1 kubectl  create configmap
• 2 语法
• 3 示例
• 4 Flags

kubectl  create configmap

根据配置文件、目录或指定的literal-value创建configmap 。

configmap 用来保存一个或多个key/value信息。

当基于配置文件创建configmap时，key将默认为文件的基础名称，value默认为文件文本内容。如果基本名称的key无效，则可以指定另一个key。

当基于目录创建configmap时，key还是文件的基础名称，目录中每个配置文件名都被设置为key，文件内容设置为value。

语法

$ configmap NAME [--from-file=[key=]source] [--from-literal=key1=value1] [--dry-run]

示例

根据文件创建一个名为my-config的configmap

kubectl create configmap my-config --from-file=path/to/bar

使用指定的keys创建一个名为my-config的configmap

kubectl create configmap my-config --from-file=key1=/path/to/bar/file1.txt --from-file=key2=/path/to/bar/file2.txt

使用key1 = config1和key2 = config2创建一个名为my-config的configmap

kubectl create configmap my-config --from-literal=key1=config1 --from-literal=key2=config2

从文件中的key = value对创建一个名为my-config的configmap

kubectl create configmap my-config --from-file=path/to/bar

从env文件创建一个名为my-config的configmap

kubectl create configmap my-config --from-env-file=path/to/bar.env

Flags

Name	Shorthand	Default	Usage
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.
dry-run		false	If true, only print the object that would be sent, without sending it.
from-env-file			Specify the path to a file to read lines of key=val pairs to create a configmap (i.e. a Docker .env file).
from-file		[]	Key file can be specified using its file path, in which case file basename will be used as configmap key, or optionally with a key and file path, in which case the given key will be used. Specifying a directory will iterate each named file in the directory whose basename is a valid configmap key.
from-literal		[]	Specify a key and literal value to insert in configmap (i.e. mykey=somevalue)
generator		configmap/v1	The name of the API generator to use.
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').
save-config		false	If true, the configuration of current object will be saved in its annotation. Otherwise, the annotation will be unchanged. This flag is useful when you want to perform kubectl apply on this object in the future.
schema-cache-dir		~/.kube/schema	If non-empty, load/store cached API schemas in this directory, default is '$HOME/.kube/schema'
show-all	a	false	When printing, show all resources (default hide terminated pods.)
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].
validate		true	If true, use a schema to validate the input before sending it