Evening y’all
I’ll try to keep it brief, I need to move my reverse proxy (traefik) to another machine and I’m opting to utilize Docker Swarm for the first time this way I’m not exposing a bunch of ports on my main server over my network, so ideally I’d like to have almost everything listening on local host while traefik does it’s thing in the background
Now I gotta ask, is Docker Swarm the best way to go about this? I know very little about Kubernetes and from what I’ve read/watched it seems like Swarm was designed for this very purpose however, I could be entirely wrong here.
What are some key changes that differ typical Compose files from Swarm?
Snippet of my current compose file:
services:
homepage:
image: ghcr.io/gethomepage/homepage
hostname: homepage
container_name: homepage
networks:
main:
ipv4_address: 172.18.0.2
environment:
PUID: 0 # optional, your user id
PGID: 0 # optional, your group id
HOMEPAGE_ALLOWED_HOSTS: MY.DOMAIN,*
ports:
- '127.0.0.1:80:3000'
volumes:
- ./config/homepage:/app/config # Make sure your local config directory exists
- /var/run/docker.sock:/var/run/docker.sock #:ro # optional, for docker integrations
- /home/user/Pictures:/app/public/icons
restart: unless-stopped
labels:
- "traefik.enable=true"
- "traefik.http.routers.homepage.rule=Host(`MY.DOMAIN`)"
- "traefik.http.routers.homepage.entrypoints=https"
- "traefik.http.routers.homepage.tls=true"
- "traefik.http.services.homepage.loadbalancer.server.port=3000"
- "traefik.http.routers.homepage.middlewares=fail2ban@file"
traefik:
image: traefik:v3.2
container_name: traefik
hostname: traefik
restart: unless-stopped
security_opt:
- no-new-privileges:true
networks:
main:
ipv4_address: 172.18.0.26
ports:
# Listen on port 80, default for HTTP, necessary to redirect to HTTPS
- target: 80
published: 55262
mode: host
# Listen on port 443, default for HTTPS
- target: 443
published: 57442
mode: host
environment:
CF_DNS_API_TOKEN_FILE: /run/secrets/cf_api_token # note using _FILE for docker secrets
# CF_DNS_API_TOKEN: ${CF_DNS_API_TOKEN} # if using .env
TRAEFIK_DASHBOARD_CREDENTIALS: ${TRAEFIK_DASHBOARD_CREDENTIALS}
secrets:
- cf_api_token
env_file: .env # use .env
volumes:
- /etc/localtime:/etc/localtime:ro
- /var/run/docker.sock:/var/run/docker.sock:ro
- ./config/traefik/traefik.yml:/traefik.yml:ro
- ./config/traefik/acme.json:/acme.json
# - ./opt:/opt
#- ./config/traefik/config.yml:/config.yml:ro
- ./config/traefik/custom-yml:/custom
# - ./config/traefik/homebridge.yml:/homebridge.yml:ro
labels:
- "traefik.enable=true"
- "traefik.http.routers.traefik.entrypoints=http"
- "traefik.http.routers.traefik.rule=Host(`traefik.MY.DOMAIN`)"
#- "traefik.http.middlewares.traefik-ipallowlist.ipallowlist.sourcerange=127.0.0.1/32, 192.168.1.0/24, 208.118.140.130, 172.18.0.0/16"
#- "traefik.http.middlewares.traefik-auth.basicauth.users=${TRAEFIK_DASHBOARD_CREDENTIALS}"
- "traefik.http.middlewares.traefik-https-redirect.redirectscheme.scheme=https"
- "traefik.http.middlewares.sslheader.headers.customrequestheaders.X-Forwarded-Proto=https"
- "traefik.http.routers.traefik.middlewares=traefik-https-redirect"
- "traefik.http.routers.traefik-secure.entrypoints=https"
- "traefik.http.routers.traefik-secure.rule=Host(`traefik.MY.DOMAIN`)"
#- "traefik.http.routers.traefik-secure.middlewares=traefik-auth"
- "traefik.http.routers.traefik-secure.tls=true"
- "traefik.http.routers.traefik-secure.tls.certresolver=cloudflare"
- "traefik.http.routers.traefik-secure.tls.domains[0].main=MY.DOMAIN"
- "traefik.http.routers.traefik-secure.tls.domains[0].sans=*.MY.DOMAIN"
- "traefik.http.routers.traefik-secure.service=api@internal"
- "traefik.http.routers.traefik.middlewares=fail2ban@file"
networks:
main:
external: true
ipam:
config:
- subnet: 172.18.0.0/16
gateway: 172.18.0.1
I censored out my actual domain with MY.DOMAIN
so if that confuses people i apologize.
I ran swarm in a homelab and ended up switching back. I don’t remember all the details I had issues with, but be aware of quorum. Here is the link to high availability docs. If one of the nodes goes down then you can’t do anything with the other. I also had issues getting everyone back online when one went down (with only two). I had three nodes, but one failed and I didn’t replace it. If one of the remaining two went offline I had to manually setup the swarm again each time. I found it to be a hassle because I didn’t have enough need for multiple nodes and high availability.
I now use Pangolin (Underlying traefik) on a VPS which VPNs back into my home where I host the sites. I have the VPN on it’s own proxmox container in the same VLAN as my servers.