小熊回收站|《蹲坑学kubernetes》之17-19：ConfigMap( 二 ) ConfigMap：用于将应用的配置信息与程

[root@k8s-master ~]# kubectl get configmaps test-map -o yaml
二、使用ConfigMap

将ConfigMap中的数据设置为环境变量
将ConfigMap中的数据设置为命令行参数
使用Volume将ConfigMap作为文件或目录挂载

【小熊回收站|《蹲坑学kubernetes》之17-19：ConfigMap】1、用作环境变量

[root@k8s-master ~]# vim test-map.yaml添加：apiVersion: v1kind: ConfigMapmetadata:name: test-mapdata:aaa: goodbbb: food

[root@k8s-master ~]# kubectl apply -f test-map.yaml

[root@k8s-master ~]# kubectl get configmaps test-map

[root@k8s-master ~]# vim test-pod.yaml添加：apiVersion: v1kind: Podmetadata:name: test-podspec:containers:- name: test-podimage: busybox:1.28command: [ "/bin/sh", "-c", "env" ]env:- name: A_AvalueFrom:configMapKeyRef:name: test-mapkey: aaa- name: B_BvalueFrom:configMapKeyRef:name: test-mapkey: bbbrestartPolicy: Never

[root@k8s-master ~]# kubectl apply -f test-pod.yaml

[root@k8s-master ~]# kubectl get pod

注意：完成Pod创建，运行结束，才能看到日志信息。
[root@k8s-master ~]# kubectl logs test-pod

2、用作命令行参数
结合上面的例子进行讲解

[root@k8s-master ~]# vim test-pod.yaml修改：apiVersion: v1kind: Podmetadata:name: test-podspec:containers:- name: test-podimage: busybox:1.28command: [ "/bin/sh", "-c", "echo $(A_A) $(B_B)" ]## 使用环境变量env:- name: A_AvalueFrom:configMapKeyRef:name: test-mapkey: aaa- name: B_BvalueFrom:configMapKeyRef:name: test-mapkey: bbbrestartPolicy: Never