1. Caddy version (caddy version):
2.3.0
2. How I run Caddy:
i use a custom build like:
ARG CADDY_VERSION=2.3.0
FROM caddy:${CADDY_VERSION}-builder AS builder
RUN xcaddy build \
--with github.com/lucaslorentz/caddy-docker-proxy/plugin/v2 \
--with github.com/caddy-dns/hetzner \
--with github.com/caddy-dns/cloudflare
FROM caddy:${CADDY_VERSION}-alpine
# for certutil
RUN apk add nss-tools
COPY --from=builder /usr/bin/caddy /usr/bin/caddy
CMD ["caddy", "docker-proxy"]
The Caddyfile looks like that
{
debug
admin :2019 {
origins *
}
}
version: "3.7"
services:
caddy_server:
image: caddy-cluster:2.3.0
ports:
- 80:80
- 443:443
- 2019:2019
networks:
- caddy_controller
- caddy-public
environment:
- CADDY_DOCKER_MODE=server
- CADDY_CONTROLLER_NETWORK=10.200.200.0/24
volumes:
- /shared-fs/caddy/Caddyfile:/etc/caddy/Caddyfile
- /shared-fs/caddy/static:/static
- /shared-fs/caddy/caddy_data:/data
- /shared-fs/caddy/caddy_config:/config
- /etc/timezone:/etc/timezone:ro
deploy:
replicas: ${CADDY_REPLICAS:-3}
labels:
caddy_controlled_server:
placement:
constraints:
- node.role == manager
preferences:
- spread: node.id
resources:
limits:
cpus: "1.00"
memory: 512M
reservations:
cpus: "0.50"
memory: 256M
caddy_controller:
image: caddy-cluster:2.3.0
ports:
- 2020:2019
networks:
- caddy_controller
- caddy-public
environment:
- CADDY_DOCKER_MODE=controller
- CADDY_CONTROLLER_NETWORK=10.200.200.0/24
- CADDY_DOCKER_CADDYFILE_PATH=/etc/caddy/Caddyfile
- CADDY_DOCKER_PROCESS_CADDYFILE=true
volumes:
- /shared-fs/caddy/Caddyfile:/etc/caddy/Caddyfile
- /var/run/docker.sock:/var/run/docker.sock
- /etc/timezone:/etc/timezone:ro
deploy:
replicas: ${CADDY_REPLICAS:-3}
placement:
constraints:
- node.role == manager
preferences:
- spread: node.id
resources:
limits:
cpus: "1.00"
memory: 512M
reservations:
cpus: "0.50"
memory: 256M
networks:
caddy-public:
driver: overlay
external: true
caddy_controller:
driver: overlay
ipam:
driver: default
config:
- subnet: "10.200.200.0/24"
3. The problem I’m having:
I am not able to connect to the api from any node of a docker swarm cluster.
4. Error messages and/or full log output:
on any node
curl localhost:2019/config/ curl: (7) Failed to connect to localhost port 2019: Connection refused
5. What I already tried:
if i do a netstat on a caddy_server container i see that the port 2019 is bind to the container itself. I tried several addresses in the Caddyfile…
/srv # netstat -a
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 2d82f37c046f:2019 0.0.0.0:* LISTEN
