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Commit | Line | Data |
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4aac110f | 1 | { lib, pkgs, config, ... }: |
4ff90563 | 2 | let |
182ae57f | 3 | cfg = config.myServices.databases.postgresql; |
4ff90563 | 4 | in { |
182ae57f | 5 | options.myServices.databases = { |
4ff90563 IB |
6 | postgresql = { |
7 | enable = lib.mkOption { | |
8415083e | 8 | default = false; |
4ff90563 IB |
9 | example = true; |
10 | description = "Whether to enable postgresql database"; | |
11 | type = lib.types.bool; | |
12 | }; | |
4aac110f IB |
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 | }; | |
182ae57f IB |
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 | }; | |
4ff90563 IB |
94 | }; |
95 | }; | |
96 | ||
97 | config = lib.mkIf cfg.enable { | |
4ff90563 IB |
98 | networking.firewall.allowedTCPPorts = [ 5432 ]; |
99 | ||
5400b9b6 | 100 | security.acme.certs."postgresql" = config.myServices.databasesCerts // { |
4ff90563 IB |
101 | user = "postgres"; |
102 | group = "postgres"; | |
4ff90563 IB |
103 | domain = "db-1.immae.eu"; |
104 | postRun = '' | |
105 | systemctl reload postgresql.service | |
106 | ''; | |
107 | }; | |
108 | ||
182ae57f IB |
109 | systemd.services.postgresql.serviceConfig = { |
110 | SupplementaryGroups = "keys"; | |
182ae57f | 111 | }; |
ec9b6564 IB |
112 | systemd.services.postgresql.postStart = lib.mkAfter '' |
113 | # This line is already defined in 19.09 | |
114 | PSQL="${pkgs.sudo}/bin/sudo -u postgres psql --port=5432" | |
115 | ||
116 | ${builtins.concatStringsSep "\n" (lib.mapAttrsToList (role: _: '' | |
117 | $PSQL -tAc "SELECT 1 FROM pg_roles WHERE rolname='${role}'" \ | |
118 | | grep -q 1 \ | |
119 | || $PSQL -tAc 'CREATE USER "${role}" WITH REPLICATION' | |
120 | '') cfg.replicationHosts)} | |
121 | ||
122 | ${builtins.concatStringsSep "\n" (lib.mapAttrsToList (role: _: | |
123 | let | |
124 | sname = builtins.replaceStrings ["-"] ["_"] role; | |
125 | in | |
126 | '' | |
127 | $PSQL -tAc "SELECT 1 FROM pg_replication_slots WHERE slot_name='${sname}'" \ | |
128 | | grep -q 1 \ | |
129 | || $PSQL -tAc "SELECT * FROM pg_create_physical_replication_slot('${sname}')" | |
130 | '') cfg.replicationHosts)} | |
131 | ''; | |
132 | ||
4aac110f | 133 | services.postgresql = { |
182ae57f | 134 | enable = true; |
4aac110f | 135 | package = cfg.package; |
4ff90563 IB |
136 | enableTCPIP = true; |
137 | extraConfig = '' | |
138 | max_connections = 100 | |
139 | wal_level = logical | |
140 | shared_buffers = 512MB | |
141 | work_mem = 10MB | |
142 | max_wal_size = 1GB | |
143 | min_wal_size = 80MB | |
144 | log_timezone = 'Europe/Paris' | |
145 | datestyle = 'iso, mdy' | |
146 | timezone = 'Europe/Paris' | |
147 | lc_messages = 'en_US.UTF-8' | |
148 | lc_monetary = 'en_US.UTF-8' | |
149 | lc_numeric = 'en_US.UTF-8' | |
150 | lc_time = 'en_US.UTF-8' | |
151 | default_text_search_config = 'pg_catalog.english' | |
0907cf1b IB |
152 | # this introduces a small delay before storing on disk, but |
153 | # makes it order of magnitudes quicker | |
154 | synchronous_commit = off | |
4ff90563 | 155 | ssl = on |
5400b9b6 IB |
156 | ssl_cert_file = '${config.security.acme.certs.postgresql.directory}/fullchain.pem' |
157 | ssl_key_file = '${config.security.acme.certs.postgresql.directory}/key.pem' | |
4ff90563 | 158 | ''; |
4aac110f IB |
159 | authentication = let |
160 | hosts = builtins.concatStringsSep "\n" ( | |
161 | lib.lists.flatten (lib.mapAttrsToList (k: vs: map (v: | |
162 | map (ip6: "hostssl ${v.database} ${v.username} ${ip6}/128 ${v.method}") v.ip6 | |
163 | ++ map (ip4: "hostssl ${v.database} ${v.username} ${ip4}/32 ${v.method}") v.ip4 | |
164 | ) vs) cfg.authorizedHosts | |
165 | )); | |
166 | replication = builtins.concatStringsSep "\n" ( | |
167 | lib.lists.flatten (lib.mapAttrsToList (k: v: | |
168 | map (ip6: "hostssl replication ${k} ${ip6}/128 pam pamservice=postgresql_replication") v.ip6 | |
169 | ++ map (ip4: "hostssl replication ${k} ${ip4}/32 pam pamservice=postgresql_replication") v.ip4 | |
170 | ) cfg.replicationHosts | |
171 | )); | |
172 | in '' | |
4ff90563 IB |
173 | local all postgres ident |
174 | local all all md5 | |
4aac110f | 175 | ${hosts} |
4ff90563 | 176 | hostssl all all all pam |
4aac110f | 177 | ${replication} |
4ff90563 IB |
178 | ''; |
179 | }; | |
180 | ||
1a718805 | 181 | secrets.keys = [ |
7178c2b1 IB |
182 | { |
183 | dest = "postgresql/pam"; | |
e1da84b0 IB |
184 | permissions = "0400"; |
185 | group = "postgres"; | |
186 | user = "postgres"; | |
4aac110f IB |
187 | text = with cfg.ldapConfig; '' |
188 | host ${host} | |
189 | base ${base} | |
e1da84b0 IB |
190 | binddn ${dn} |
191 | bindpw ${password} | |
192 | pam_filter ${filter} | |
193 | ssl start_tls | |
4ff90563 | 194 | ''; |
7178c2b1 IB |
195 | } |
196 | { | |
197 | dest = "postgresql/pam_replication"; | |
e1da84b0 IB |
198 | permissions = "0400"; |
199 | group = "postgres"; | |
200 | user = "postgres"; | |
4aac110f IB |
201 | text = with cfg.replicationLdapConfig; '' |
202 | host ${host} | |
203 | base ${base} | |
204 | binddn ${dn} | |
205 | bindpw ${password} | |
e1da84b0 IB |
206 | pam_login_attribute cn |
207 | ssl start_tls | |
4ff90563 | 208 | ''; |
7178c2b1 IB |
209 | } |
210 | ]; | |
e1da84b0 IB |
211 | |
212 | security.pam.services = let | |
213 | pam_ldap = "${pkgs.pam_ldap}/lib/security/pam_ldap.so"; | |
258dd18b IB |
214 | in { |
215 | postgresql = { | |
4ff90563 | 216 | text = '' |
182ae57f IB |
217 | auth required ${pam_ldap} config=${config.secrets.location}/postgresql/pam |
218 | account required ${pam_ldap} config=${config.secrets.location}/postgresql/pam | |
4ff90563 | 219 | ''; |
258dd18b IB |
220 | }; |
221 | postgresql_replication = { | |
4ff90563 | 222 | text = '' |
182ae57f IB |
223 | auth required ${pam_ldap} config=${config.secrets.location}/postgresql/pam_replication |
224 | account required ${pam_ldap} config=${config.secrets.location}/postgresql/pam_replication | |
4ff90563 | 225 | ''; |
258dd18b IB |
226 | }; |
227 | }; | |
4ff90563 IB |
228 | }; |
229 | } | |
230 |