k8s.gcr.io 镜像加速器搭建

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k8s.gcr.io 相关的镜像在国内是没办法访问的，最近看到了大佬分享的加速器教程，实现方式是 k8s 集群实现的，因为服务器资源有限，所以直接二进制启动快速搭建加速器

https://fuckcloudnative.io/posts/docker-registry-proxy/

二进制快速搭建

首先你需要一个域名，域名需要有 https 证书，这个可以用 certbot 快速申请，还需要一台海外服务器，这个自行解决。

只需要 nginx 和 register 就可以快速搭建好加速镜像

首先下载 register 二进制包

https://github.com/distribution/distribution/releases/download/v2.8.0/registry_2.8.0_linux_amd64.tar.gz

tar xvf registry_2.8.0_linux_amd64.tar.gz
mkdir -p /usr/local/registry/conf
mkdir -p /usr/local/registry/bin
cp registry /usr/local/registry/bin

准备好配置文件 config.yml

version: 0.1
log:
  fields:
    service: registry
storage:
  cache:
    blobdescriptor: inmemory
  filesystem:
    rootdirectory: /data/docker-register
http:
  addr: :5000
  headers:
    X-Content-Type-Options: [nosniff]
proxy:
  remoteurl: https://k8s.gcr.io
health:
  storagedriver:
    enabled: true
    interval: 10s
    threshold: 3

启动服务

./bin/registry serve conf/config.yml

Nginx 代理配置

server {
    server_name gcr-docker.xxxxx.red;
    location /  {
        proxy_redirect off;
        proxy_pass http://127.0.0.1:5000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
    access_log /data/logs/nginx/access.log main;
    error_log /data/logs/nginx/error.log;


    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/gcr-docker.xxx.red/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/gcr-docker.xxx.red/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}

拉取镜像

docker pull gcr-docker.xxxxx.red/kube-apiserver:v1.17.3

大功告成!