diff options
Diffstat (limited to 'modules/private/databases/postgresql.nix')
-rw-r--r-- | modules/private/databases/postgresql.nix | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/modules/private/databases/postgresql.nix b/modules/private/databases/postgresql.nix new file mode 100644 index 00000000..911a6d1b --- /dev/null +++ b/modules/private/databases/postgresql.nix | |||
@@ -0,0 +1,220 @@ | |||
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 = cfg.enable; | ||
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 | |||