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1 | { lib, pkgs, config, ... }: | |
2 | let | |
3 | cfg = config.myServices.databases.postgresql; | |
4 | in { | |
5 | options.myServices.databases = { | |
6 | postgresql = { | |
7 | enable = lib.mkOption { | |
8 | default = false; | |
9 | example = true; | |
10 | description = "Whether to enable postgresql database"; | |
11 | type = lib.types.bool; | |
12 | }; | |
13 | package = lib.mkOption { | |
14 | type = lib.types.package; | |
15 | default = pkgs.postgresql; | |
16 | description = '' | |
17 | Postgresql package to use. | |
18 | ''; | |
19 | }; | |
20 | ldapConfig = lib.mkOption { | |
21 | description = "LDAP configuration to allow PAM identification via LDAP"; | |
22 | type = lib.types.submodule { | |
23 | options = { | |
24 | host = lib.mkOption { type = lib.types.str; }; | |
25 | base = lib.mkOption { type = lib.types.str; }; | |
26 | dn = lib.mkOption { type = lib.types.str; }; | |
27 | password = lib.mkOption { type = lib.types.str; }; | |
28 | filter = lib.mkOption { type = lib.types.str; }; | |
29 | }; | |
30 | }; | |
31 | }; | |
32 | replicationLdapConfig = lib.mkOption { | |
33 | description = "LDAP configuration to allow replication"; | |
34 | type = lib.types.submodule { | |
35 | options = { | |
36 | host = lib.mkOption { type = lib.types.str; }; | |
37 | base = lib.mkOption { type = lib.types.str; }; | |
38 | dn = lib.mkOption { type = lib.types.str; }; | |
39 | password = lib.mkOption { type = lib.types.str; }; | |
40 | }; | |
41 | }; | |
42 | }; | |
43 | authorizedHosts = lib.mkOption { | |
44 | default = {}; | |
45 | description = "Hosts to allow connections from"; | |
46 | type = lib.types.attrsOf (lib.types.listOf (lib.types.submodule { | |
47 | options = { | |
48 | method = lib.mkOption { | |
49 | default = "md5"; | |
50 | type = lib.types.str; | |
51 | }; | |
52 | username = lib.mkOption { | |
53 | default = "all"; | |
54 | type = lib.types.str; | |
55 | }; | |
56 | database = lib.mkOption { | |
57 | default = "all"; | |
58 | type = lib.types.str; | |
59 | }; | |
60 | ip4 = lib.mkOption { | |
61 | default = []; | |
62 | type = lib.types.listOf lib.types.str; | |
63 | }; | |
64 | ip6 = lib.mkOption { | |
65 | default = []; | |
66 | type = lib.types.listOf lib.types.str; | |
67 | }; | |
68 | }; | |
69 | })); | |
70 | }; | |
71 | replicationHosts = lib.mkOption { | |
72 | default = {}; | |
73 | description = "Hosts to allow replication from"; | |
74 | type = lib.types.attrsOf (lib.types.submodule { | |
75 | options = { | |
76 | ip4 = lib.mkOption { | |
77 | type = lib.types.listOf lib.types.str; | |
78 | }; | |
79 | ip6 = lib.mkOption { | |
80 | type = lib.types.listOf lib.types.str; | |
81 | }; | |
82 | }; | |
83 | }); | |
84 | }; | |
85 | # Output variables | |
86 | socketsDir = lib.mkOption { | |
87 | type = lib.types.path; | |
88 | default = "/run/postgresql"; | |
89 | description = '' | |
90 | The directory where Postgresql puts sockets. | |
91 | ''; | |
92 | readOnly = true; | |
93 | }; | |
94 | systemdRuntimeDirectory = lib.mkOption { | |
95 | type = lib.types.str; | |
96 | # Use ReadWritePaths= instead if socketsDir is outside of /run | |
97 | default = assert lib.strings.hasPrefix "/run/" cfg.socketsDir; | |
98 | lib.strings.removePrefix "/run/" cfg.socketsDir; | |
99 | description = '' | |
100 | Adjusted Postgresql sockets directory for systemd | |
101 | ''; | |
102 | readOnly = true; | |
103 | }; | |
104 | }; | |
105 | }; | |
106 | ||
107 | config = lib.mkIf cfg.enable { | |
108 | networking.firewall.allowedTCPPorts = [ 5432 ]; | |
109 | ||
110 | security.acme.certs."postgresql" = config.myServices.databasesCerts // { | |
111 | user = "postgres"; | |
112 | group = "postgres"; | |
113 | plugins = [ "fullchain.pem" "key.pem" "account_key.json" ]; | |
114 | domain = "db-1.immae.eu"; | |
115 | postRun = '' | |
116 | systemctl reload postgresql.service | |
117 | ''; | |
118 | }; | |
119 | ||
120 | systemd.services.postgresql.serviceConfig = { | |
121 | SupplementaryGroups = "keys"; | |
122 | RuntimeDirectory = cfg.systemdRuntimeDirectory; | |
123 | }; | |
124 | services.postgresql = { | |
125 | enable = true; | |
126 | package = cfg.package; | |
127 | enableTCPIP = true; | |
128 | extraConfig = '' | |
129 | max_connections = 100 | |
130 | wal_level = logical | |
131 | shared_buffers = 512MB | |
132 | work_mem = 10MB | |
133 | max_wal_size = 1GB | |
134 | min_wal_size = 80MB | |
135 | log_timezone = 'Europe/Paris' | |
136 | datestyle = 'iso, mdy' | |
137 | timezone = 'Europe/Paris' | |
138 | lc_messages = 'en_US.UTF-8' | |
139 | lc_monetary = 'en_US.UTF-8' | |
140 | lc_numeric = 'en_US.UTF-8' | |
141 | lc_time = 'en_US.UTF-8' | |
142 | default_text_search_config = 'pg_catalog.english' | |
143 | ssl = on | |
144 | ssl_cert_file = '${config.security.acme.directory}/postgresql/fullchain.pem' | |
145 | ssl_key_file = '${config.security.acme.directory}/postgresql/key.pem' | |
146 | ''; | |
147 | authentication = let | |
148 | hosts = builtins.concatStringsSep "\n" ( | |
149 | lib.lists.flatten (lib.mapAttrsToList (k: vs: map (v: | |
150 | map (ip6: "hostssl ${v.database} ${v.username} ${ip6}/128 ${v.method}") v.ip6 | |
151 | ++ map (ip4: "hostssl ${v.database} ${v.username} ${ip4}/32 ${v.method}") v.ip4 | |
152 | ) vs) cfg.authorizedHosts | |
153 | )); | |
154 | replication = builtins.concatStringsSep "\n" ( | |
155 | lib.lists.flatten (lib.mapAttrsToList (k: v: | |
156 | map (ip6: "hostssl replication ${k} ${ip6}/128 pam pamservice=postgresql_replication") v.ip6 | |
157 | ++ map (ip4: "hostssl replication ${k} ${ip4}/32 pam pamservice=postgresql_replication") v.ip4 | |
158 | ) cfg.replicationHosts | |
159 | )); | |
160 | in '' | |
161 | local all postgres ident | |
162 | local all all md5 | |
163 | ${hosts} | |
164 | hostssl all all all pam | |
165 | ${replication} | |
166 | ''; | |
167 | }; | |
168 | ||
169 | secrets.keys = [ | |
170 | { | |
171 | dest = "postgresql/pam"; | |
172 | permissions = "0400"; | |
173 | group = "postgres"; | |
174 | user = "postgres"; | |
175 | text = with cfg.ldapConfig; '' | |
176 | host ${host} | |
177 | base ${base} | |
178 | binddn ${dn} | |
179 | bindpw ${password} | |
180 | pam_filter ${filter} | |
181 | ssl start_tls | |
182 | ''; | |
183 | } | |
184 | { | |
185 | dest = "postgresql/pam_replication"; | |
186 | permissions = "0400"; | |
187 | group = "postgres"; | |
188 | user = "postgres"; | |
189 | text = with cfg.replicationLdapConfig; '' | |
190 | host ${host} | |
191 | base ${base} | |
192 | binddn ${dn} | |
193 | bindpw ${password} | |
194 | pam_login_attribute cn | |
195 | ssl start_tls | |
196 | ''; | |
197 | } | |
198 | ]; | |
199 | ||
200 | security.pam.services = let | |
201 | pam_ldap = "${pkgs.pam_ldap}/lib/security/pam_ldap.so"; | |
202 | in [ | |
203 | { | |
204 | name = "postgresql"; | |
205 | text = '' | |
206 | auth required ${pam_ldap} config=${config.secrets.location}/postgresql/pam | |
207 | account required ${pam_ldap} config=${config.secrets.location}/postgresql/pam | |
208 | ''; | |
209 | } | |
210 | { | |
211 | name = "postgresql_replication"; | |
212 | text = '' | |
213 | auth required ${pam_ldap} config=${config.secrets.location}/postgresql/pam_replication | |
214 | account required ${pam_ldap} config=${config.secrets.location}/postgresql/pam_replication | |
215 | ''; | |
216 | } | |
217 | ]; | |
218 | }; | |
219 | } | |
220 |