一、扯淡
撸 Dokcer 这么长时间以来，由于国内众所周知的网络原因，Docker pull 镜像会非常慢，慢到你怀疑这个世界，甚至怀疑你来到这个世界的正确性与合理性，为了为了让自己不怀疑世界，记录一下如何撸一个 docker mirror registry
二、动手撸一个
2.1、基本环境
以下操作基本环境如下
- Docker 1.12.1
- registry 2.5.1
- nginx 1.10.1
2.2、导出 registry 配置
Docker 官方提供了一个 registry，Github 地址 点这里，而大部分能找到的资料都是如何撸一个 private registry，就是启动一下这个官方 registry container 即可，然后就可以 docker push 什么的；而 mirror registry 其实也很简单，就是增加一个配置即可
首先把官方 registry 中的配置文件导出
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| docker run -it --rm --entrypoint cat registry:2.5.1 \
/etc/docker/registry/config.yml > config.yml
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registry 的配置文件内容如下
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| version: 0.1
log:
fields:
service: registry
storage:
cache:
blobdescriptor: inmemory
filesystem:
rootdirectory: /var/lib/registry
http:
addr: :5000
headers:
X-Content-Type-Options: [nosniff]
health:
storagedriver:
enabled: true
interval: 10s
threshold: 3
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2.3、修改 registry 配置
上一步已经将配置导出了，接下来如果想使用 mirror 功能只需在下面增加 proxy 选项即可
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| version: 0.1
log:
fields:
service: registry
storage:
cache:
blobdescriptor: inmemory
filesystem:
rootdirectory: /var/lib/registry
http:
addr: :5000
headers:
X-Content-Type-Options: [nosniff]
health:
storagedriver:
enabled: true
interval: 10s
threshold: 3
proxy:
remoteurl: https://registry-1.docker.io
username: [username]
password: [password]
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username 与 password 是可选项，当填写 username 与 password 以后就可以从 hub pull 私有镜像
2.4、启动 mirror registry
最后只需要在启动 registry 时候将配置塞回去即可
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| docker run -dt --name v2-mirror \
-v /data/registry:/var/lib/registry \
-v /etc/registry/config.yml:/etc/docker/registry/config.yml \
-p 5000:5000 registry:2.5.1
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以上命令将启动一个 mirror registry，并且数据持久化到 /data/registry
2.5、nginx 配置 ssl
当然此时直接在 docker 启动参数总增加 --registry-mirror=http://IP:5000，然后重启 docker 再进行 pull 即可生效，但是 5000 端口外加 http 总有点那么不装逼，所以最好增加一个 nginx 做反向代理，同时可以使用 ssl 加密，以下是一个 nginx 配置仅供参考，ssl 证书可采用 StartSSL 免费一年的 DV 证书
nginx.conf
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|
user nginx nginx;
worker_processes auto;
worker_rlimit_nofile 51200;
error_log /var/log/nginx/error.log info;
pid /var/run/nginx/nginx.pid;
events {
worker_connections 51200;
use epoll;
multi_accept on;
}
http {
include mime.types;
default_type application/octet-stream;
log_format main '$server_name $remote_addr - $remote_user [$time_local] "$request" - $request_body '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for" '
'$ssl_protocol $ssl_cipher $request_time ';
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 1024m;
sendfile on;
tcp_nopush on;
keepalive_timeout 120;
server_tokens off;
tcp_nodelay on;
gzip on;
gzip_buffers 16 8k;
gzip_comp_level 6;
gzip_http_version 1.1;
gzip_min_length 256;
gzip_proxied any;
gzip_vary on;
gzip_types
text/xml application/xml application/atom+xml application/rss+xml application/xhtml+xml image/svg+xml
text/javascript application/javascript application/x-javascript
text/x-json application/json application/x-web-app-manifest+json
text/css text/plain text/x-component
font/opentype application/x-font-ttf application/vnd.ms-fontobject
image/x-icon;
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
open_file_cache max=1000 inactive=20s;
open_file_cache_valid 30s;
open_file_cache_min_uses 2;
open_file_cache_errors on;
include /etc/nginx/conf.d/*.conf;
}
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mirror.conf
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| server {
listen 80;
server_name your-domain;
rewrite ^(.*) https://$server_name$1 permanent;
}
server {
listen 443;
server_name your-domain;
access_log /var/log/nginx/your-domain.log main;
ssl on;
ssl_certificate /etc/nginx/ssl/your-domain.crt;
ssl_certificate_key /etc/nginx/ssl/your-domain.key;
location / {
log_not_found on;
proxy_pass http://mirror:5000;
proxy_read_timeout 300;
proxy_connect_timeout 300;
proxy_redirect off;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
}
}
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