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1 { pkgs, lib, config, ... }:
2 let
3 inherit (lib) types;
4 inherit (config.services) knot;
5 inherit (config.users) users groups;
6 in
7 {
8 imports = [
9 knot/autogeree.net.nix
10 knot/sourcephile.fr.nix
11 ];
12 options.services.knot = {
13 zones = lib.mkOption {
14 default = {};
15 type = types.attrsOf (types.submodule ({name, ...}: {
16 #config.domain = lib.mkDefault name;
17 options = {
18 conf = lib.mkOption {
19 type = types.lines;
20 };
21 data = lib.mkOption {
22 type = types.nullOr types.lines;
23 };
24 };
25 }));
26 };
27 };
28 config = {
29 systemd.services.knot.preStart = lib.concatStringsSep "\n" (lib.mapAttrsToList (domain: {data, ...}:
30 lib.optionalString (data != null) ''
31 install -D -o ${users."knot".name} -g ${groups."knot".name} -m 700 \
32 ${pkgs.writeText "${domain}.zone" data} \
33 /var/lib/knot/zones/${domain}.zone
34 '') knot.zones);
35 /*
36 systemd.services.knot.postStart = lib.mkAfter ''
37 PATH="/run/current-system/sw/bin:$PATH"
38 knotc zone-freeze ${domain}.
39 while ! knotc zone-status ${domain}. +freeze | grep -q 'freeze: yes'; do sleep 1; done
40 knotc zone-flush ${domain}.
41 install -o knot -g knot -m 700 ${zone} /var/lib/knot/signed/${domain}.zone
42 knotc zone-reload ${domain}.
43 knotc zone-thaw ${domain}.
44 '';
45 */
46 networking.nftables.ruleset = ''
47 # for knot to notify ns6.gandi.net
48 add rule inet filter fw2net ip daddr 217.70.177.40 udp dport 53 counter accept comment "DNS"
49 add rule inet filter fw2net ip daddr 217.70.177.40 tcp dport 53 counter accept comment "DNS"
50 # for knot to notify ns0.muarf.org
51 add rule inet filter fw2net ip daddr 78.192.65.63 udp dport 53 counter accept comment "DNS"
52 add rule inet filter fw2net ip daddr 78.192.65.63 tcp dport 53 counter accept comment "DNS"
53 # for knot to receive queries
54 add rule inet filter net2fw udp dport 53 counter accept comment "DNS"
55 add rule inet filter net2fw tcp dport 53 counter accept comment "DNS"
56 '';
57 services.knot = {
58 enable = true;
59 extraArgs = [ "-v" ];
60 # https://www.knot-dns.cz/docs/2.6/html/reference.html
61 extraConfig = ''
62 server :
63 # Listen on localhost to allow only there
64 # dynamic updates for ACME challenges.
65 listen: 127.0.0.1@5353
66
67 mod-rrl:
68 - id: default
69 rate-limit: 200
70 slip: 2
71
72 template:
73 - id: default
74 dnssec-signing: off
75 # move databases below the state directory, because they need to be writable
76 storage: /var/lib/knot/zones
77 # Input-only zone files
78 # https://www.knot-dns.cz/docs/2.8/html/operation.html#example-3
79 # prevents modification of the zonefiles, since the zonefiles are immutable
80 #zonefile-sync: -1
81 zonefile-load: difference
82 journal-content: changes
83 global-module: mod-rrl/default
84
85 database:
86 journal-db: /var/lib/knot/journal
87 kasp-db: /var/lib/knot/kasp
88 timer-db: /var/lib/knot/timer
89
90 log:
91 - target: syslog
92 any: info
93
94 remote:
95 - id: local_resolver
96 address: 127.0.0.1@53
97
98 - id: secondary_gandi
99 address: 217.70.177.40@53
100
101 - id: secondary_muarf
102 address: 78.192.65.63@53
103
104 submission:
105 - id: dnssec_validating_resolver
106 parent: local_resolver
107
108 policy:
109 - id: rsa
110 single-type-signing: false
111 ksk-shared: false
112 algorithm: RSASHA256
113 ksk-size: 4096
114 zsk-size: 2048
115 zsk-lifetime: 30d
116 ksk-lifetime: 365d
117 ksk-submission: dnssec_validating_resolver
118
119 - id: ed25519
120 single-type-signing: false
121 ksk-shared: false
122 algorithm: ED25519
123 ksk-size: 256
124 zsk-size: 256
125 zsk-lifetime: 30d
126 ksk-lifetime: 365d
127 cds-cdnskey-publish: always
128 ksk-submission: dnssec_validating_resolver
129
130 acl:
131 # DOC: https://docs.gandi.net/en/domain_names/advanced_users/secondary_nameserver.html
132 - id: acl_gandi
133 address: 217.70.177.40
134 action: transfer
135
136 - id: acl_muarf
137 address: 78.192.65.63
138 action: transfer
139
140 '' + lib.concatStringsSep "\n" (lib.mapAttrsToList (domain: {conf, ...}: conf) knot.zones);
141 };
142 };
143 }