1. The problem I’m having:
I’m trying out and playing with Caddy, but I cannot get error handling to work…
TLDR; for my setup:
- nikasere.xyz should proxy to localhost:3000 with the /shared path being specifically handled by another proxy to localhost:3001 (works
) - test.nikasere.xyz - statically serves some files (works )
- I have a /srv/50x.html page I want to show if any error happens in any of the defined locations, if it’s not handled by them - e.g. by stuff running as proxy (doesn’t work
)
Currently, if I stop the container responsible for /nikasere.xyz (it’s stopped now)
2. Error messages and/or full log output:
{
"level": "error",
"ts": 1712846861.2044957,
"logger": "http.log.error",
"msg": "dial tcp: lookup server on 127.0.0.11:53: server misbehaving",
"request": {
"remote_ip": "188.252.198.224",
"remote_port": "13750",
"client_ip": "188.252.198.224",
"proto": "HTTP/3.0",
"method": "GET",
"host": "nikasere.xyz",
"uri": "/",
"headers": {
"Pragma": [
"no-cache"
],
"Upgrade-Insecure-Requests": [
"1"
],
"Accept-Encoding": [
"gzip, deflate, br, zstd"
],
"Sec-Ch-Ua-Mobile": [
"?1"
],
"User-Agent": [
"Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Mobile Safari/537.36"
],
"Sec-Fetch-Site": [
"none"
],
"Sec-Ch-Ua": [
"\"Google Chrome\";v=\"123\", \"Not:A-Brand\";v=\"8\", \"Chromium\";v=\"123\""
],
"Sec-Fetch-Mode": [
"navigate"
],
"Sec-Fetch-User": [
"?1"
],
"Cache-Control": [
"no-cache"
],
"Sec-Ch-Ua-Platform": [
"\"Android\""
],
"Accept": [
"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7"
],
"Sec-Fetch-Dest": [
"document"
],
"Accept-Language": [
"en-US,en;q=0.9,bs;q=0.8,hr;q=0.7,de;q=0.6"
]
},
"tls": {
"resumed": true,
"version": 772,
"cipher_suite": 4865,
"proto": "h3",
"server_name": "nikasere.xyz"
}
},
"duration": 0.012622262,
"status": 502,
"err_id": "1u17ptnp2",
"err_trace": "reverseproxy.statusError (reverseproxy.go:1267)"
}
3. Caddy version:
caddy v2.7.6
4. How I installed and ran Caddy:
a. System environment:
Ubuntu 22.04 on VPS.
b. Command:
Using docker compose.
sudo docker compose up -d
c. Service/unit/compose file:
version: "3.9"
name: my-app
services:
caddy:
image: caddy:latest
restart: unless-stopped
container_name: caddy
ports:
- '80:80'
- '443:443'
- '443:443/udp'
volumes:
- ./Caddyfile:/etc/caddy/Caddyfile
- ./site:/srv
- caddy_data:/data
- caddy_config:/config
- /home/dev/stuff/projects/caddy_test/caddy/docs.nikasere.xyz:/data/docs.nikasere.xyz
server:
image: example/server
build:
context: ../simple-server-test
restart: unless-stopped
ports:
- :3000
server2:
image: example/server2
build:
context: ../simple-server-test-copy
restart: unless-stopped
ports:
- :3000
volumes:
caddy_data:
caddy_config:
d. My complete Caddy config:
nikasere.xyz {
root * /srv
reverse_proxy server:3000
handle_path /shared* {
uri strip_prefix /shared
rewrite * /{path}
reverse_proxy server2:3000
}
# Doesnt work like this
handle_errors {
rewrite * /50x.html
file_server
}
}
test.nikasere.xyz {
root * /data/docs.nikasere.xyz
file_server
}
# Doesnt work like this either
handle_errors {
root * /srv
rewrite * /50x.html
file_server
}