之前陆续写过 Linux 下的 Let’s Encrypt 证书的获取及更新 , 这里更新一篇 Docker 下的操作方式 , 更加通用且
方便维护、升级，同时也避免破坏本地的环境
Docker 安装
这里请参考 过往文章
首次申请证书
这里是通过部署 nginx 运行静态网站来进行申请 , 这里简单展示下 nginx 的部署文件
docker-compose.yml
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| # 使用说明 V3.2.0
version: '3.0'
services:
nginx:
hostname: nginx
restart: always
logging:
driver: "json-file"
options:
max-size: "500m"
container_name: nginx
image: nginx:latest
ports:
- 80:80
- 443:443
volumes:
- ./conf/nginx.conf:/etc/nginx/nginx.conf
- ./conf/custom/:/etc/nginx/conf/
- ./www/:/etc/nginx/html/
- ./logs/:/var/log/nginx/
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这里将我们的静态网页放在 ./www 目录下, 然后解析对应域名到该服务器 , 添加域名nginx文件到配置目录并且启动容器和 reload nginx. 配置文件示例如下
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| server {
listen 80;
server_name 域名;
charset utf-8;
location / {
root html;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
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然后申请证书
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| docker run --rm -it -v /data/apps/letsencrypt/etc/letsencrypt:/etc/letsencrypt -v /data/apps/letsencrypt/var/log/letsencrypt:/var/log/letsencrypt -v /data/apps/nginx/www:/data/letsencrypt certbot/certbot:latest certonly --webroot --email 邮箱 --agree-tos --no-eff-email --webroot-path=/data/letsencrypt -d 域名
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运行结束会在 /data/apps/letsencrypt/live 目录下出生证书文件和私钥文件
生成 2048位DH
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| openssl dhparam -out ./dhparam-2048.pem 2048
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拷贝到自定义目录 , 然后修改nginx文件
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| server {
listen 80;
server_name 域名;
charset utf-8;
location / {
root html;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
# 处理https请求
server {
listen 443 ssl;
server_name 域名;
server_tokens off;
ssl_certificate /letsencrypt/live/api.evdances.com/fullchain.pem;
ssl_certificate_key /letsencrypt/live/api.evdances.com/privkey.pem;
ssl_buffer_size 8k;
ssl_dhparam /letsencrypt/dhparam-2048.pem; # 使用2048位DH参数，加强安全
ssl_protocols TLSv1.2 TLSv1.1 TLSv1;
ssl_prefer_server_ciphers on;
ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5;
ssl_ecdh_curve secp384r1;
ssl_session_tickets off;
# OCSP stapling
ssl_stapling on;
ssl_stapling_verify on;
resolver 8.8.8.8;
location / {
root html;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
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nginx的docker-compose.yml 文件修改
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| # 使用说明 V3.2.0
version: '3.0'
services:
nginx:
hostname: nginx
restart: always
logging:
driver: "json-file"
options:
max-size: "500m"
container_name: nginx
image: nginx:latest
ports:
- 80:80
- 443:443
volumes:
- ./conf/nginx.conf:/etc/nginx/nginx.conf
- ./conf/custom/:/etc/nginx/conf/
- ./www/:/etc/nginx/html/
- ./logs/:/var/log/nginx/
- /data/apps/letsencrypt/etc/letsencrypt/live:/letsencrypt/live # 当前证书目录
- /data/apps/letsencrypt/etc/letsencrypt/archive:/letsencrypt/archive # 历史证书目录
- ./dhparam-2048.pem:/letsencrypt/dhparam-2048.pem # 使用2048位DH（Diffie-Hellman）参数
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重启容器, reload nginx
更新证书
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| #!/bin/bash
docker run -it --rm -v /data/apps/letsencrypt/etc/letsencrypt:/etc/letsencrypt -v /data/apps/letsencrypt/var/lib/letsencrypt:/var/lib/letsencrypt -v /data/apps/letsencrypt/var/log/letsencrypt:/var/log/letsencrypt -v /data/apps/nginx/www:/data/letsencrypt certbot/certbot renew --webroot -w /data/letsencrypt --quiet && docker kill --signal=HUP nginx
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新增定时任务 , 每月15号尝试更新证书
crontab -e
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| 0 0 15 * * root sh /data/deploy/renew.sh
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参考链接
