Foreword
Nginx的配置比较复杂，每次都查半天，也不能自动申请https证书，稍微有点不方便，于是使用Caddy平替了Nginx，把图床、blog、ttrss都直接升级到了https了，这样以后省的我的分站是https，而主站还留在http，有些人拉取rss是从分站拉的，会直接报错。
Caddy
Caddy大部分配置可以从官方直接看到，就是官方的例子给的比较少，需要每次试一下
https://caddyserver.com/docs/caddyfile
v2ray代理域名 {
# 反代我的github的分站
reverse_proxy github.elmagnifico.tech {
header_up Host {upstream_hostport}
header_up X-Forwarded-Host {host}
}
handle_path /代理路径 {
# 这里是反代v2ray本地端口
reverse_proxy 127.0.0.1:55304
}
}
elmagnifico.tech {
# 使用nginx的路径，但是确是caddy，🐂他
root * /usr/share/nginx/html
file_server
# 如果不处理错误，会导致404页面不生效，还是默认的浏览器404
handle_errors {
rewrite * /404.html
file_server
}
}
img.elmagnifico.tech {
# 反代图床
reverse_proxy 127.0.0.1:9514 {
# 这里是用来替换传递进去的域名和端口以及协议，好像不写是默认替换的，也没问题
header_up Host {host}
header_up X-Real-IP {remote}
header_up X-Forwarded-For {remote}
header_up X-Forwarded-Proto {scheme}
}
# 图床文件比较大，把响应体设大一点
request_body {
max_size 20MB
}
}
ttrss.elmagnifico.tech {
# 反代我的ttrss
reverse_proxy 127.0.0.1:181
}
如果某部分需要log，只需要加入对应的log就行了，方便查问题
log {
output file /var/log/caddy_access.log
roll_size 1gb
roll_uncompressed
}
同比使用nginx要配置一堆东西，写起来也复杂
# For more information on configuration, see:
# * Official English Documentation: http://nginx.org/en/docs/
# * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;
events {
worker_connections 1024;
}
http {
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;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name v2ray代理域名;
root /usr/share/nginx/html;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
# Settings for a TLS enabled server.
#
server {
listen 443 ssl http2 default_server;
listen [::]:443 ssl http2 default_server;
server_name v2ray.elmagnifico.tech;
root /usr/share/nginx/html;
ssl_certificate "/etc/letsencrypt/live/v2ray代理域名/fullchain.pem";
ssl_certificate_key "/etc/letsencrypt/live/v2ray代理域名/privkey.pem";
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 10m;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location /v2ray {
proxy_redirect off;
proxy_pass http://127.0.0.1:43968;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $http_host;
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
}
Summary
多数服务可能给的都是Nginx的配置，要转成Caddy可能需要查一下对应的命令是什么，但是总体上大差不差，很相似。
只是轻量使用和不用担心SSL证书，那么用Caddy绝对足够了，省心方便。
Quote
https://ma.ttias.be/set-up-custom-404-page-static-sites-caddy/
https://caddyserver.com/docs/caddyfile/directives/handle_errors
https://stackoverflow.com/questions/69265440/how-to-configure-web-server-caddy-to-a-return-404-error
https://stackoverflow.com/questions/72413710/return-custom-404-response-if-caddy-reverse-proxy-returns-404
https://zhuanlan.zhihu.com/p/407133025