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CKA考试知识点分享(12)---configmap

news 来源：原创 2025/6/13 15:59:02

CKA 版本：1.32
第十二套题是涉及configmap相关。
实验操作：通过configmap 给nginx deployment外挂配置，实现修改configmap后，配置动态更新。
注意：本文不是题目，只是为了学习相关知识点做的实验。仅供参考

实验开始

创建nginx的deployment

apiVersion: apps/v1
kind: Deployment
metadata:name: nginx
spec:selector:matchLabels:run: nginxtemplate:metadata:labels:run: nginxspec:containers:- name: nginximage: docker.m.daocloud.io/library/nginx:stable-alpineports:- containerPort: 80---
apiVersion: v1
kind: Service
metadata:name: nginxlabels:run: nginx
spec:ports:- port: 80selector:run: nginx

访问pod 查看nginx版本：
在这里插入图片描述

创建nginx的配置文件
vim nginx.conf

user  nginx;
worker_processes  auto;error_log  /var/log/nginx/error.log notice;
pid        /run/nginx.pid;events {worker_connections  1024;
}http {include       /etc/nginx/mime.types;default_type  application/octet-stream;log_format  main  '$remote_addr - $remote_user [$time_local] "$request" ''$status $body_bytes_sent "$http_referer" ''"$http_user_agent" "$http_x_forwarded_for"';access_log  /var/log/nginx/access.log  main;sendfile        on;#tcp_nopush     on;keepalive_timeout  65;#gzip  on;server_tokens off;include /etc/nginx/conf.d/*.conf;
}

创建configmap
kubectl create configmap nginx.conf --from-file=nginx.conf
查看configmap
在这里插入图片描述

针对deployment 进行修改使用这个configmap

    volumeMounts:- name: config-volumemountPath: /etc/nginx/nginx.confsubPath: nginx.conf  # 以子文件nginx.conf挂载到/etc/nginx/ 目录，不加的话当前目录下只有nginx.conf这一个文件volumes:- name: config-volumeconfigMap:name: nginx.conf