amcedns to enable Let's Encrypt DNS-01 challenges

2026-01-25 22:40:22 +01:00 · 2026-01-25 22:40:22 +01:00 · 0f3cd2c70a
commit 0f3cd2c70a
parent c33ae36af3
11 changed files with 463 additions and 1 deletions
--- a/.sops.yaml
+++ b/.sops.yaml
@ -34,6 +34,7 @@ keys:
        - &host_zammad_ansible_pull_age_key age1sv7uhpnk9d3u3je9zzvlux0kd83f627aclpamnz2h3ksg599838qjgrvqs
        - &host_ntfy_ansible_pull_age_key age1dkecypmfuj0tcm2cz8vnvq5drpu2ddhgnfkzxvscs7m4e79gpseqyhr9pg
        - &host_spaceapiccc_ansible_pull_age_key age1mdtnk78aeqnwqadjqje5pfha04wu92d3ecchyqajjmy434kwq98qksq2wa
+        - &host_acmedns_ansible_pull_age_key age16pxqxdj25xz6w200sf8duc62vyk0xkhzc7y63nyhg29sm077vp8qy4sywv
    external:
      age: &host_external_age_keys
        - &host_status_ansible_pull_age_key age1yl9ts8k6ceymaxjs72r5puetes5mtuzxuger7qgme9qkagfrm9hqzxx9qr
@ -57,6 +58,12 @@ creation_rules:
          *admin_gpg_keys
  ## host vars
  # chaosknoten hosts
+  - path_regex: inventories/chaosknoten/host_vars/acmedns.*
+    key_groups:
+      - pgp:
+          *admin_gpg_keys
+        age:
+          - *host_acmedns_ansible_pull_age_key
  - path_regex: inventories/chaosknoten/host_vars/cloud.*
    key_groups:
      - pgp:
--- a/inventories/chaosknoten/host_vars/acmedns.sops.yaml
+++ b/inventories/chaosknoten/host_vars/acmedns.sops.yaml
@ -0,0 +1,214 @@
+ansible_pull__age_private_key: ENC[AES256_GCM,data:R0FZVQXrUgqW04VltXpYhEuI8Q8i0gE4K1EI05NTZyTO+9QOynMVzfLOzOOT1Yh+oQNLsE0MFELX8eo3EFKyXIrkE/wr2ECgFqY=,iv:m4N6t03tklKRaRZ9eVl2vv9T8WUy6AiPQDNuyU0UEtI=,tag:XJMnT5GZthv9RPQFZTWZaA==,type:str]
+secret__oidc_client_secret: ENC[AES256_GCM,data:UHbIuftvyPHxtHGRvH+ydMetiCRu3z3JL+zFzLwVaSQ=,iv:1/KKB9IHZEWgEULoab1aVwbPIW7mxfRK7NABiSP2yIQ=,tag:8g3ej7ZJwAuPk9eGdPGyog==,type:str]
+secret__oidc_cookie_secret: ENC[AES256_GCM,data:epKralmaga5W0TK0njjTBP0GIlkUK2ogKEbWQ/zlIhQ=,iv:rDBiSE+DPkX2I2i2fJQ/SrkltlCnPOEyeMfud2xXbFA=,tag:SOGIJHiaKq1t+Dg0NJGnxA==,type:str]
+sops:
+  age:
+    - recipient: age16pxqxdj25xz6w200sf8duc62vyk0xkhzc7y63nyhg29sm077vp8qy4sywv
+      enc: |
+        -----BEGIN AGE ENCRYPTED FILE-----
+        YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA5SDJ0NHZkK3hvUSt2K2hV
+        TWNKUkFlUFVkaEFlM1lDVTdnZU5EeURiOURzCnQzcWE2RnpiZ3BmRzIwbFRDdkRr
+        VmcreVJvdTl2Z3lBVFJTNmNLZWdyMWcKLS0tIEkwcXAwY0NoNmhCZm9JUDMyRjVC
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+        WwgmI8KNYpC0YXzDJ3fUUL6g4oiSqMxTGvQ+0oABOk+XFnVx+++aoQ==
+        -----END AGE ENCRYPTED FILE-----
+  lastmodified: "2026-01-25T16:16:15Z"
+  mac: ENC[AES256_GCM,data:dBBAJIXeVUXXPXB8Eq4gH5F/0jTpvb79hdu4KD9gV5RL36Tr3iU92SKAZdMcw3/+8zq5L32YWWpYR5HFVPXaSdgls3wtWdrz/1j/C/zRxup+Y8DSOdiebCtz1lJJvglQMZNznRvo7N58lTdF/XqJA4tY51xZZi/krsJXDxtlTgA=,iv:yhwXbXu1MKl4sSYaCKPVUK9aedmIMnt/rzXTcGqmqpk=,tag:hZX6YZrzkrr1mPe6FOs7Xw==,type:str]
+  pgp:
+    - created_at: "2026-01-25T14:20:25Z"
+      enc: |-
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+        U5zDMAciWNVISL/ArcJFroK0n9dvRRsHHHx3/OgQ9Lnl73X5JEAleIPJVb1SDV4e
+        HgmBrlRFpp9e/Mu94Gp9yFd9PqziSA47lkdMwjMYHntTwbT3dqUGOJLF1D1oqC9V
+        +t+5FO5fP+LbnmuFQIGRGqdPpCy4S60d2EqocwBl6q6xn/DLQw1j9hGNpMl3GwBI
+        O7zquV2MyXJR9JqyklWoCmKldLIhpsnPtTx/AhIsMLWq2hvNfbBBNA41sMkofcvl
+        H2Hggi+TkpOh6bre1/uPkr8T3MLsiZIUB/1uHcgYO3FH13K2Ow9ChxmkeLsW6Afu
+        hbQcG7SKr0sCHAmvzbTsIRCpryORDRw4vwrsKuVVgA7neD8HtCItJ/Vk1JmV2xYZ
+        96ilVPPpDs0tmQ/6dZZosoXLGi37Hs+FRgcAUuAdZ3bzb65e+CxtSVjRALG7hz9R
+        XPKmsD6tTgdLpau/zugxdKx3yKMCHzC+AouD+esea8GNuoeGug58IEoglLXDctbU
+        aAEJAhC0Js4STROmS43wGXP2v4umeLw9iF3Wp9L6o12BL3FZXi121py2ogosjAY2
+        30wzFU2KJGqS25/pnXw6r9ycgxdXeKsddR94Q4TOulO3SSEdjs7B+iOKwUkGKoBq
+        9iHTzz6Gpajo
+        =bBZ5
+        -----END PGP MESSAGE-----
+      fp: 878FEA3CB6A6F6E7CD80ECBE28506E3585F9F533
+  unencrypted_suffix: _unencrypted
+  version: 3.11.0
--- a/inventories/chaosknoten/host_vars/acmedns.yaml
+++ b/inventories/chaosknoten/host_vars/acmedns.yaml
@ -0,0 +1,23 @@
+---
+docker_compose__compose_file_content: "{{ lookup('ansible.builtin.template', 'resources/chaosknoten/acmedns/docker_compose/compose.yaml.j2') }}"
+docker_compose__configuration_files:
+  - name: acmedns.cfg
+    content: "{{ lookup('ansible.builtin.template', 'resources/chaosknoten/acmedns/docker_compose/acmedns.cfg.j2') }}"
+  - name: oauth2-proxy.cfg
+    content: "{{ lookup('ansible.builtin.template', 'resources/chaosknoten/acmedns/docker_compose/oauth2-proxy.cfg.j2') }}"
+  - name: html/index.html
+    content: "{{ lookup('ansible.builtin.template', 'resources/chaosknoten/acmedns/docker_compose/index.html.j2') }}"
+docker_compose__pull: missing
+
+certbot__version_spec: ""
+certbot__acme_account_email_address: le-admin@hamburg.ccc.de
+certbot__certificate_domains:
+  # - "spaceapi.ccc.de" # after DNS has been adjusted
+  - "acmedns.hamburg.ccc.de"
+certbot__new_cert_commands:
+  - "systemctl reload nginx.service"
+
+nginx__version_spec: ""
+nginx__configurations:
+  - name: acmedns.hamburg.ccc.de
+    content: "{{ lookup('ansible.builtin.file', 'resources/chaosknoten/acmedns/nginx/acmedns.hamburg.ccc.de.conf') }}"
--- a/inventories/chaosknoten/hosts.yaml
+++ b/inventories/chaosknoten/hosts.yaml
@ -78,11 +78,16 @@ all:
      ansible_host: spaceapiccc.hosts.hamburg.ccc.de
      ansible_user: chaos
      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
+    acmedns:
+      ansible_host: acmedns.hosts.hamburg.ccc.de
+      ansible_user: chaos
+      ansible_ssh_common_args: -J ssh://chaos@router.hamburg.ccc.de
 hypervisors:
  hosts:
    chaosknoten:
 base_config_hosts:
  hosts:
+    acmedns:
    ccchoir:
    cloud:
    eh22-wiki:
@ -111,6 +116,7 @@ nftables_hosts:
    router:
 docker_compose_hosts:
  hosts: 
+    acmedns:
    ccchoir:
    grafana:
    tickets:
@ -128,6 +134,7 @@ nextcloud_hosts:
    cloud:
 nginx_hosts:
  hosts:
+    acmedns:
    ccchoir:
    eh22-wiki:
    grafana:
@ -150,6 +157,7 @@ public_reverse_proxy_hosts:
    public-reverse-proxy:
 certbot_hosts:
  hosts:
+    acmedns:
    ccchoir:
    eh22-wiki:
    grafana:
--- a/resources/chaosknoten/acmedns/docker_compose/acmedns.cfg.j2
+++ b/resources/chaosknoten/acmedns/docker_compose/acmedns.cfg.j2
@ -0,0 +1,27 @@
+# https://github.com/joohoi/acme-dns?tab=readme-ov-file#configuration
+[general]
+protocol = "both"
+domain = "auth.acmedns.hamburg.ccc.de"
+nsname = "acmedns.hosts.hamburg.ccc.de"
+nsadmin = "noc.lists.hamburg.ccc.de"
+records = [
+    "auth.acmedns.hamburg.ccc.de. CNAME public-reverse-proxy.hamburg.ccc.de.",
+    "auth.acmedns.hamburg.ccc.de. NS acmedns.hosts.hamburg.ccc.de.",
+]
+
+[database]
+engine = "sqlite3"
+connection = "/var/lib/acme-dns/acme-dns.db"
+
+[api]
+ip = "0.0.0.0"
+port = "80"
+tls = "none"
+corsorigins = [
+    "*"
+]
+
+[logconfig]
+loglevel = "debug"
+logtype = "stdout"
+logformat = "text"
--- a/resources/chaosknoten/acmedns/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/acmedns/docker_compose/compose.yaml.j2
@ -0,0 +1,22 @@
+---
+services:
+  oauth2-proxy:
+    container_name: oauth2-proxy
+    image: quay.io/oauth2-proxy/oauth2-proxy:v7.14.2
+    command: --config /oauth2-proxy.cfg
+    hostname: oauth2-proxy
+    volumes:
+      - "./configs/oauth2-proxy.cfg:/oauth2-proxy.cfg"
+    restart: unless-stopped
+    ports:
+      - 4180:4180
+
+  acmedns:
+    image: docker.io/joohoi/acme-dns:latest
+    ports:
+      - "[::]:53:53"
+      - "[::]:53:53/udp"
+      - 8080:80
+    volumes:
+      - ./configs/acmedns.cfg:/etc/acme-dns/config.cfg:ro
+      - ./data/acmedns:/var/lib/acme-dns
--- a/resources/chaosknoten/acmedns/docker_compose/index.html.j2
+++ b/resources/chaosknoten/acmedns/docker_compose/index.html.j2
@ -0,0 +1,63 @@
+<html>
+<head>
+<title>ACME DNS Register</title>
+<style>
+table, tr, th, td {
+    border-collapse: collapse;
+    border: 1px solid black;
+}
+th, td {
+    padding: 2px 4px;
+}
+th {
+    text-align: left;
+}
+</style>
+</head>
+<body>
+<h1>Register an Entry in ACME DNS</h1>
+
+<p>This is the page where you can create an entry in ACME DNS. Please only do so when you need a new entry; there is currently no way to remove entries once they have been created.</p>
+<p>See <a href="https://wiki.hamburg.ccc.de/infrastructure:services:acme_dns">the ACME DNS service</a> entry in the wiki for further details.</p>
+
+<p><button id="register">Register a new entry</button></p>
+
+<table id="results" style="display: none">
+<tr>
+    <th>Full Domain</th><td id="fulldomain">foo</td>
+</tr>
+<tr>
+    <th>Sub Domain</th><td id="subdomain">foo</td>
+</tr>
+<tr>
+    <th>Username</th><td id="username">foo</td>
+</tr>
+<tr>
+    <th>Password</th><td id="password">foo</td>
+</tr>
+</table>
+
+<script>
+document.getElementById("register").addEventListener("click", (event) => {
+    const register = async () => {
+        const response = await fetch("/register", {
+            method: "POST"
+        });
+        if (!response.ok) {
+            console.log(response);
+            alert("Unable to register a new entry.");
+            return;
+        }
+        const registration = await response.json()
+        for (const key in registration) {
+            const e = document.getElementById(key);
+            if (e !== null) {
+                e.innerText = registration[key];
+            }
+        }
+        document.getElementById("results").style.display = "block";
+    }
+    register();
+});
+</script>
+</body>
--- a/resources/chaosknoten/acmedns/docker_compose/oauth2-proxy.cfg.j2
+++ b/resources/chaosknoten/acmedns/docker_compose/oauth2-proxy.cfg.j2
@ -0,0 +1,13 @@
+reverse_proxy = true
+http_address="0.0.0.0:4180"
+cookie_secret="{{ secret__oidc_cookie_secret }}"
+email_domains="*"
+
+# dex provider
+oidc_issuer_url="https://id.hamburg.ccc.de/realms/ccchh"
+provider="oidc"
+provider_display_name="CCCHH ID"
+client_id="acmedns"
+client_secret="{{ secret__oidc_client_secret }}"
+redirect_url="https://acmedns.hamburg.ccc.de/oauth2/callback"
+
--- a/resources/chaosknoten/acmedns/nginx/acmedns.hamburg.ccc.de.conf
+++ b/resources/chaosknoten/acmedns/nginx/acmedns.hamburg.ccc.de.conf
@ -0,0 +1,83 @@
+# partly generated 2022-01-08, Mozilla Guideline v5.6, nginx 1.17.7, OpenSSL 1.1.1k, intermediate configuration
+# https://ssl-config.mozilla.org/#server=nginx&version=1.17.7&config=intermediate&openssl=1.1.1k&guideline=5.6
+server {
+    # Listen on a custom port for the proxy protocol.
+    listen [::]:8443 ssl http2 proxy_protocol;
+    # Make use of the ngx_http_realip_module to set the $remote_addr and
+    # $remote_port to the client address and client port, when using proxy
+    # protocol.
+    # First set our proxy protocol proxy as trusted.
+    set_real_ip_from 2a00:14b0:4200:3000:125::1;
+    # Then tell the realip_module to get the addreses from the proxy protocol
+    # header.
+    real_ip_header proxy_protocol;
+
+    server_name acmedns.hamburg.ccc.de;
+
+    root /ansible_docker_compose/configs/html/;
+
+    ssl_certificate /etc/letsencrypt/live/acmedns.hamburg.ccc.de/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/acmedns.hamburg.ccc.de/privkey.pem;
+    # verify chain of trust of OCSP response using Root CA and Intermediate certs
+    ssl_trusted_certificate /etc/letsencrypt/live/acmedns.hamburg.ccc.de/chain.pem;
+
+    # HSTS (ngx_http_headers_module is required) (63072000 seconds)
+    add_header Strict-Transport-Security "max-age=63072000" always;
+
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Port 443;
+    # This is https in any case.
+    proxy_set_header X-Forwarded-Proto https;
+    # Hide the X-Forwarded header.
+    proxy_hide_header X-Forwarded;
+    # Assume we are the only Reverse Proxy (well using Proxy Protocol, but that
+    # is transparent).
+    # Also provide "_hidden" for by, since it's not relevant.
+    proxy_set_header Forwarded "for=$remote_addr;proto=https;host=$host;by=_hidden";
+    proxy_buffer_size 8k; # needed for oauth2-proxy to work correctly
+    port_in_redirect off;
+
+    location /oauth2/ {
+        proxy_pass       http://127.0.0.1:4180;
+        proxy_set_header Host                    $host;
+        proxy_set_header X-Real-IP               $remote_addr;
+        proxy_set_header X-Auth-Request-Redirect $request_uri;
+        # or, if you are handling multiple domains:
+        # proxy_set_header X-Auth-Request-Redirect $scheme://$host$request_uri;
+    }
+
+    location = /oauth2/auth {
+        proxy_pass       http://127.0.0.1:4180;
+        proxy_set_header Host             $host;
+        proxy_set_header X-Real-IP        $remote_addr;
+        proxy_set_header X-Forwarded-Uri  $request_uri;
+        # nginx auth_request includes headers but not body
+        proxy_set_header Content-Length   "";
+        proxy_pass_request_body           off;
+    }
+
+    location = / {
+        auth_request /oauth2/auth;
+        error_page 401 = @oauth2_signin;
+
+        index index.html;
+    }
+
+    location = /register {
+        auth_request /oauth2/auth;
+        error_page 401 = @oauth2_signin;
+
+        proxy_pass http://127.0.0.1:8080/register;
+    }
+
+    location = /update { # no auth by proxy required
+        proxy_pass http://127.0.0.1:8080/update;
+    }
+
+    location @oauth2_signin {
+        return 302 /oauth2/sign_in?rd=$scheme://$host$request_uri;
+    }
+}
--- a/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
+++ b/resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf
@ -82,6 +82,7 @@ map $host $upstream_acme_challenge_host {
    spaceapi.ccc.de spaceapiccc.hosts.hamburg.ccc.de:31820;
    cpuccc.hamburg.ccc.de 172.31.17.151:31820;
    cpu.ccc.de 172.31.17.151:31820;
+    acmedns.hamburg.ccc.de acmedns.hosts.hamburg.ccc.de:31820;
    default "";
 }

--- a/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
+++ b/resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf
@ -100,6 +100,7 @@ stream {
        spaceapi.ccc.de spaceapiccc.hosts.hamburg.ccc.de:8443;
        cpuccc.hamburg.ccc.de 172.31.17.151:8443;
        cpu.ccc.de 172.31.17.151:8443;
+        acmedns.hamburg.ccc.de acmedns.hosts.hamburg.ccc.de:8443;
    }

    server {