Cloudflare Developers•4mo ago

Heres the custom domain I'm testing with

Heres the custom domain I'm testing with: https://dash.00darksi.de/

75 Replies

Chaika•4mo ago

time to thread

x03OP•4mo ago

You're right xD

Chaika•4mo ago

@x03 that's a cname to tsar.app?

x03OP•4mo ago

Yep

x03OP•4mo ago

Chaika•4mo ago

cool, and under SSL/TLS -> Custom Hostnames, status is?

x03OP•4mo ago

Okay good catch This one actually isnt added to my SaaS thing idk why i never got a "cross user banned" error though oh its on the same CF account thats why

Chaika•4mo ago

if on same account there is magic to make that work without saas yup

x03OP•4mo ago

should i add it to the SaaS thing

Chaika•4mo ago

easiest way to fix

x03OP•4mo ago

Alright let me add it and validate it Also an FYI, I added a client's domain like 30 mins ago and it threw SSL errors But I'll continue with my darkside domain for testing the TXT verfication is taking a minute

Chaika•4mo ago

ps. you don't need the prevalidation as long as the cname exists and isn't being flattened (like not on apex)

x03OP•4mo ago

Okay finally worked

x03OP•4mo ago

https://dash.00darksi.de/ Still throwing SSL error Just like the other client domain that I added to the SaaS list

Chaika•4mo ago

if you do `curl -vvv -k --resolve dash.00darksi.de:443:127.0.0.1 https://dash.00darksi.de/ we want the app.tsar.co cert to be served, curl will think invalid but Cf should be fine with that

x03OP•4mo ago

Chaika•4mo ago

https://tenor.com/view/we-got-him-we-got-him-ladies-and-gentlemen-gif-13874411

Tenor

x03OP•4mo ago

What does this mean 😨

Chaika•4mo ago

I'd have to retest sometime later to be 100% sure, but I tested this kind of setup before, and it was like this: Host header forwarded to origin, origin should respond with normal cert (tsar.app) - even w/ full (strict) it's fine as long as it matches the target In other words, Traefik should be serving the tsar.app cert by default, not it's default. In nginx I would do this with a default server block, in traefik I would google their docs for information

x03OP•4mo ago

Hmm I see, I could try to do some research into this and mess with some Traefik config settings Traefik has some sort of config setup that allows the passing of Cloudflare tokens Maybe that could be what's missing to serve cloudflare approved certs You'd set a flag like: --certificatesresolvers.letsencrypt.acme.dnschallenge.provider=cloudflare And define an ENV variable like: CLOUDFLARE_DNS_API_TOKEN=* Not sure if it's related but I'll try it

Chaika•4mo ago

I don't imagine that's related and you don't need certs for each customer, just to serve the tsar.app ones by default

x03OP•4mo ago

Yeah you're correct, doing the stuff I sent above does not work Hmm @Chaika Would using a cloudflare certificate instead of a LetsEncrypt certificate for my server fix this issue?

x03OP•4mo ago

I found an article: https://blog.marcosalonso.dev/traefik-https-cloudflare/ But I dont know if this would help with my problem

Marcos Alonso - Blog

How to setup Traefik proxy instance with HTTPS via Cloudflare Certi...

This post will show you how to set up a Traefik Proxy instance with SSL encryption (HTTPS) using Cloudflare certificates. All this using Docker containers and with the help of the Docker Compose tool. Cloudflare setup Making your domain configurable with Cloudflare First, you must have a domain name and

Chaika•4mo ago

Both would work equally well for your website and fail equally when they don't get served to the custom hostname's requests

x03OP•4mo ago

Hmm okay so the issue is my traefik config, not the cert

Chaika•4mo ago

the issue isn't the certificate but your configuration not serving it by default. I'd look for a way in traefik to have a default server block/execution/certficiates, sometimes called wildcard yup

x03OP•4mo ago

Okay I'll try and find some info on this

Chaika•4mo ago

if easier, and you just wanted to test that sort of setup first, you could try making an explicit config for dash.00darksi.de serving tscar.app's certificates just as a quick test

x03OP•4mo ago

Here's my Traefik config:

version: '3.8'
networks:
  coolify:
    external: true
services:
  traefik:
    container_name: coolify-proxy
    image: 'traefik:v2.11'
    restart: unless-stopped
    extra_hosts:
      - 'host.docker.internal:host-gateway'
    networks:
      - coolify
    ports:
      - '80:80'
      - '443:443'
      - '8080:8080'
    healthcheck:
      test: 'wget -qO- http://localhost:80/ping || exit 1'
      interval: 4s
      timeout: 2s
      retries: 5
    volumes:
      - '/var/run/docker.sock:/var/run/docker.sock:ro'
      - '/data/coolify/proxy:/traefik'
    command:
      - '--ping=true'
      - '--ping.entrypoint=http'
      - '--api.dashboard=true'
      - '--api.insecure=false'
      - '--entrypoints.http.address=:80'
      - '--entrypoints.https.address=:443'
      - '--entrypoints.http.http.encodequerysemicolons=true'
      - '--entryPoints.http.http2.maxConcurrentStreams=50'
      - '--entrypoints.https.http.encodequerysemicolons=true'
      - '--entryPoints.https.http2.maxConcurrentStreams=50'
      - '--providers.docker.exposedbydefault=false'
      - '--providers.file.directory=/traefik/dynamic/'
      - '--providers.file.watch=true'
      - '--certificatesresolvers.letsencrypt.acme.httpchallenge=true'
      - '--certificatesresolvers.letsencrypt.acme.storage=/traefik/acme.json'
      - '--certificatesresolvers.letsencrypt.acme.httpchallenge.entrypoint=http'
      - '--providers.docker=true'
    labels:
      - traefik.enable=true
      - traefik.http.routers.traefik.entrypoints=http
      - traefik.http.routers.traefik.service=api@internal
      - traefik.http.services.traefik.loadbalancer.server.port=8080
      - coolify.managed=true

version: '3.8'
networks:
  coolify:
    external: true
services:
  traefik:
    container_name: coolify-proxy
    image: 'traefik:v2.11'
    restart: unless-stopped
    extra_hosts:
      - 'host.docker.internal:host-gateway'
    networks:
      - coolify
    ports:
      - '80:80'
      - '443:443'
      - '8080:8080'
    healthcheck:
      test: 'wget -qO- http://localhost:80/ping || exit 1'
      interval: 4s
      timeout: 2s
      retries: 5
    volumes:
      - '/var/run/docker.sock:/var/run/docker.sock:ro'
      - '/data/coolify/proxy:/traefik'
    command:
      - '--ping=true'
      - '--ping.entrypoint=http'
      - '--api.dashboard=true'
      - '--api.insecure=false'
      - '--entrypoints.http.address=:80'
      - '--entrypoints.https.address=:443'
      - '--entrypoints.http.http.encodequerysemicolons=true'
      - '--entryPoints.http.http2.maxConcurrentStreams=50'
      - '--entrypoints.https.http.encodequerysemicolons=true'
      - '--entryPoints.https.http2.maxConcurrentStreams=50'
      - '--providers.docker.exposedbydefault=false'
      - '--providers.file.directory=/traefik/dynamic/'
      - '--providers.file.watch=true'
      - '--certificatesresolvers.letsencrypt.acme.httpchallenge=true'
      - '--certificatesresolvers.letsencrypt.acme.storage=/traefik/acme.json'
      - '--certificatesresolvers.letsencrypt.acme.httpchallenge.entrypoint=http'
      - '--providers.docker=true'
    labels:
      - traefik.enable=true
      - traefik.http.routers.traefik.entrypoints=http
      - traefik.http.routers.traefik.service=api@internal
      - traefik.http.services.traefik.loadbalancer.server.port=8080
      - coolify.managed=true

Do you know which setting lets me point dash.00darksi.de to the tsar.app cert? Also how do I even reference the certificate that I need

Chaika•4mo ago

I do not use traefik, docker (very much) or coolify lol it might be easier to find a way to mark one of them as a default

x03OP•4mo ago

Alright I'll try to do that

Chaika•4mo ago

https://doc.traefik.io/traefik/https/tls/#default-certificate some info about default certs/configs there

Traefik TLS Documentation - Traefik

Learn how to configure the transport layer security (TLS) connection in Traefik Proxy. Read the technical documentation.

Chaika•4mo ago

 labels:
   - "traefik.tls.stores.default.defaultgeneratedcert.resolver=cloudflare"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.main=example.org"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.sans=foo.example.org, bar.example.org

 labels:
   - "traefik.tls.stores.default.defaultgeneratedcert.resolver=cloudflare"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.main=example.org"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.sans=foo.example.org, bar.example.org

looks interesting, lots of magic with auto tls though is this an actual production/deployed app? If not I would probably try that. Otherwise I'd say be very very careful or setup a separate testing env lol

x03OP•4mo ago

It's deployed but no one's using it yet xD So we're good to test anything we need

Chaika•4mo ago

safe to break

x03OP•4mo ago

yep I've seen a user recommend me this:

- traefik.http.routers.traefik.tls.domains[0].main=dash.00darksi.de
- traefik.http.routers.traefik.tls.domains[0].sans=dash.00darksi.de
- certificatesresolvers.letsencrypt.acme.dnschallenge.provider=cloudflare

- traefik.http.routers.traefik.tls.domains[0].main=dash.00darksi.de
- traefik.http.routers.traefik.tls.domains[0].sans=dash.00darksi.de
- certificatesresolvers.letsencrypt.acme.dnschallenge.provider=cloudflare

I'm going to try both that and the stuff you sent

Chaika•4mo ago

that wouldn't really work tho Cloudflare provider is DNS, you're not going to have DNS control over all your clients (I assume?)

x03OP•4mo ago

Oh okay, I'll try what you sent then Nope, you're right

Chaika•4mo ago

I would probably change that a bit though, one sec You're just using normal let's encrypt resolver with http validation, looks like?

x03OP•4mo ago

I assume so, I think that's the Coolify default Ill show you my container labels 1 sec

# Enable Traefik
traefik.enable=true

# Define middlewares
traefik.http.middlewares.gzip.compress=true

# HTTPS router for all domains and subdomains
traefik.http.routers.https-router.entryPoints=https
traefik.http.routers.https-router.middlewares=gzip
traefik.http.routers.https-router.rule=HostRegexp(`{host:.+}`) && !Host(`tsar.dev`, `tsar.net`)
traefik.http.routers.https-router.service=https-service
traefik.http.routers.https-router.tls.certresolver=letsencrypt
traefik.http.routers.https-router.tls=true

# Custom jawn
traefik.tls.stores.default.defaultgeneratedcert.resolver=cloudflare
traefik.tls.stores.default.defaultgeneratedcert.domain.main=dash.00darksi.de
traefik.tls.stores.default.defaultgeneratedcert.domain.sans=dash.00darksi.de

# Service configuration
traefik.http.services.https-service.loadbalancer.server.port=3000

# Enable Traefik
traefik.enable=true

# Define middlewares
traefik.http.middlewares.gzip.compress=true

# HTTPS router for all domains and subdomains
traefik.http.routers.https-router.entryPoints=https
traefik.http.routers.https-router.middlewares=gzip
traefik.http.routers.https-router.rule=HostRegexp(`{host:.+}`) && !Host(`tsar.dev`, `tsar.net`)
traefik.http.routers.https-router.service=https-service
traefik.http.routers.https-router.tls.certresolver=letsencrypt
traefik.http.routers.https-router.tls=true

# Custom jawn
traefik.tls.stores.default.defaultgeneratedcert.resolver=cloudflare
traefik.tls.stores.default.defaultgeneratedcert.domain.main=dash.00darksi.de
traefik.tls.stores.default.defaultgeneratedcert.domain.sans=dash.00darksi.de

# Service configuration
traefik.http.services.https-service.loadbalancer.server.port=3000

Chaika•4mo ago

  - "traefik.tls.stores.default.defaultgeneratedcert.resolver=letsencrypt"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.main=tsar.app"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.sans=*.tsar.app

  - "traefik.tls.stores.default.defaultgeneratedcert.resolver=letsencrypt"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.main=tsar.app"
   - "traefik.tls.stores.default.defaultgeneratedcert.domain.sans=*.tsar.app

x03OP•4mo ago

Those aren't my global Traefik settings, but just for the .app container

Chaika•4mo ago

it's weird though because I swear you couldn't do wildcards over http challenges 'cept you clearly from earlier testing have a wildcard LE cert

x03OP•4mo ago

Yep I do lmao That took so long to figure out Just adding this to the container traefik labels didn't do anything I'll try this as well

Chaika•4mo ago

I would remove that. Yea I realized after you're not using the cloudflare resolver at all (I would also restart the container if you didn't already)

x03OP•4mo ago

Yep its restarting now And I removed the initial 3 labels LETS GO its worked

x03OP•4mo ago

https://dash.00darksi.de/

TSAR

Modern backend framework for software developers.

x03OP•4mo ago

Thank you so much I need to study all this SSL and reverse proxy stuff when I get freetime Its super complicated but very interesting

Chaika•4mo ago

Traefik makes it way more complicated with all it's automations well. it also makes stuff way easier, that isn't cert related you give and you get

x03OP•4mo ago

Yep

Chaika•4mo ago

Switching to Cloudflare's Origin Certs may not be a bad idea long run since Let's Encrypt may fail without you noticing and Origin Certs are for 15 years, but that's something to decide later

x03OP•4mo ago

I'll 100% look into that later, since that's not urgent I'll have more time to do my own research and not require someone to walk me through it like this situation xD

Chaika•4mo ago

anyway I'll end this with one piece of advice: This setup only works because you're using CF. If you removed CF, you'd need to issue certs for each customer. (which is what cf for saas is taking care for you) Proxied CNAMEs in CF's Cert logic work if the certificate responded to contain either the actual hostname, or the target of the cname. fun stuff

x03OP•4mo ago

Wow that's great I guess the SaaS thing makes certificates for all the customers

Chaika•4mo ago

It does yea, you can see that in the custom hostname status

x03OP•4mo ago

I looked into it a little and its cool

Chaika•4mo ago

it uses http validation by default idk what type of product you're aiming for, but worth mentioning maybe, if you have customers who ever want to use their apex (example.com) and not a subdomain, you'd need to force them to add the prevalidation first, and then the Cname. Otherwise for subdomains they can just CNAME and nothing else (and that apex setup would only work if they use a DNS Provider that supports CNAME/ALIAS records/ANAME at root, otherwise would need Enterprise's Apex Proxying to get a static IP if they're using a dns provider which doesn't support those special record types and want to put it on their apex)

x03OP•4mo ago

Oh I see, well the product is similar to Sellix, where users host some sort of content on their app, and then their customers can access that content via <app_id>.tsar.app, <vanity>.tsar.app, or custom domain It's possible that people use their root domain though

Chaika•4mo ago

yea, which again would be possible as long as their dns provider supports cname/alias/aname records (Called different things, all meaning the same) at root

x03OP•4mo ago

I think the SaaS already does do prevalidations even for subdomains I was asked to do a TXT record thing

Chaika•4mo ago

It tells you to add the txt but you don't need to you can just cname and wait

x03OP•4mo ago

Oh I see

Chaika•4mo ago

If you try to do that on the root though it won't work, because CNAMEs aren't supported on the root per RFCs, so every dns provider who supports that is actually flattening them (into A/AAAA records) which removes identifying info

x03OP•4mo ago

So those SaaS text records need to be added for the root to work?

Chaika•4mo ago

You need to add the prevalidation txt record to be added and verified, and then tell them to add the cname, is how that works on root

x03OP•4mo ago

I'll look into CF api to see how I can automate that, I've seen other services do the TXT record verification before so I'm sure I can figure it out.

Chaika•4mo ago

The Custom Hostnames API responds back with the challenge record and then you can continue to query for updates and such. It's not a bad api *If your customer is using CF they can CNAME on Root and skip that whole validation stuff still

x03OP•4mo ago

Oh that's great Oh wait thats crazy So no txt record if they're using CF?

Chaika•4mo ago

You don't need the txt record for verification on subdomains of any provider, or on root if they're using CF

x03OP•4mo ago

Alright that's some really valuable information, thanks! I'd like to keep this thread here so I can reference this info for later

Chaika•4mo ago

CF cheats because on their own dns they can see the raw cname target even on root

x03OP•4mo ago

That sounds super handy I'll advise my users to use CF for quicker setup then

Chaika•4mo ago

Ever use Pages Custom Domains or R2 Custom Domains? That's exactly what it does/uses. HTTP Validation w/ CF For SaaS

x03OP•4mo ago

I've used Pages It does feel like magic

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Heres the custom domain I'm testing with