servers/losurdo/acme/sourcephile.fr.nix

   1 { pkgs, lib, config, servers, ... }:
   2 let
   3   domain = "sourcephile.fr";
   4   domainID = lib.replaceStrings ["."] ["_"] domain;
   5   credentialsFile = "/var/lib/acme/.lego/${domain}/rfc2136";
   6   inherit (config.users) users groups;
   7 in
   8 {
   9 systemd.services."acme-${domain}".after = [
  10   "unbound.service"
  11 ];
  12 services.shorewall.configs.rules = ''
  13   # for lego to update ACME DNS-01 challenge
  14   DNS(ACCEPT) $FW net:${servers.mermet.ipv4}
  15   # for lego to check DNS propagation on ns6.gandi.net
  16   DNS(ACCEPT) $FW net:217.70.177.40 {user=${users.root.name}}
  17 '';
  18 networking.nftables.ruleset = ''
  19   # for lego to update ACME DNS-01 challenge
  20   add rule inet filter fw2net tcp dport 53 ip daddr ${servers.mermet.ipv4} counter accept comment "DNS"
  21   add rule inet filter fw2net udp dport 53 ip daddr ${servers.mermet.ipv4} counter accept comment "DNS"
  22   # for lego to check DNS propagation on ns6.gandi.net
  23   add rule inet filter fw2net ip daddr 217.70.177.40 tcp dport 53 skuid ${users.root.name} counter accept comment "DNS gandi"
  24   add rule inet filter fw2net ip daddr 217.70.177.40 udp dport 53 skuid ${users.root.name} counter accept comment "DNS gandi"
  25 '';
  26 security.acme.certs."${domain}" = {
  27   email = "root+letsencrypt@${domain}";
  28   extraDomains = {
  29     "*.${domain}" = null;
  30   };
  31   user = users.root.name;
  32   group = groups.acme.name;
  33   allowKeysForGroup = true;
  34   keyType = "rsa4096";
  35   dnsProvider = "rfc2136";
  36   # ns6.gandi.net takes roughly 5min to update
  37   # hence lego's RFC2136_PROPAGATION_TIMEOUT=1000
  38   #dnsPropagationCheck = false;
  39   inherit credentialsFile;
  40 };
  41 install.shellHook = ''
  42   {
  43   cat <<-EOF
  44   RFC2136_NAMESERVER=ns.${domain}:53
  45   RFC2136_TSIG_ALGORITHM=hmac-sha256.
  46   RFC2136_TSIG_KEY=acme_${domainID}
  47   RFC2136_PROPAGATION_TIMEOUT=1000
  48   RFC2136_POLLING_INTERVAL=30
  49   RFC2136_SEQUENCE_INTERVAL=30
  50   RFC2136_DNS_TIMEOUT=1000
  51   RFC2136_TTL=1
  52   EOF
  53   pass "servers/losurdo/lego/${domain}/rfc2136"
  54   } |
  55   ssh "$target" install -D -m 0400 -o root -g root /dev/stdin \
  56    ${credentialsFile}
  57 '';
  58 }