diff options
Diffstat (limited to 'modules/private/databases/mariadb.nix')
-rw-r--r-- | modules/private/databases/mariadb.nix | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/modules/private/databases/mariadb.nix b/modules/private/databases/mariadb.nix new file mode 100644 index 0000000..21f4359 --- /dev/null +++ b/modules/private/databases/mariadb.nix | |||
@@ -0,0 +1,125 @@ | |||
1 | { lib, pkgs, config, myconfig, ... }: | ||
2 | let | ||
3 | cfg = config.myServices.databases.mariadb; | ||
4 | in { | ||
5 | options.myServices.databases = { | ||
6 | mariadb = { | ||
7 | enable = lib.mkOption { | ||
8 | default = cfg.enable; | ||
9 | example = true; | ||
10 | description = "Whether to enable mariadb database"; | ||
11 | type = lib.types.bool; | ||
12 | }; | ||
13 | dataDir = lib.mkOption { | ||
14 | type = lib.types.path; | ||
15 | default = "/var/lib/mysql"; | ||
16 | description = '' | ||
17 | The directory where Mariadb stores its data. | ||
18 | ''; | ||
19 | }; | ||
20 | # Output variables | ||
21 | socketsDir = lib.mkOption { | ||
22 | type = lib.types.path; | ||
23 | default = "/run/mysqld"; | ||
24 | description = '' | ||
25 | The directory where Mariadb puts sockets. | ||
26 | ''; | ||
27 | }; | ||
28 | sockets = lib.mkOption { | ||
29 | type = lib.types.attrsOf lib.types.path; | ||
30 | default = { | ||
31 | mysqld = "${cfg.socketsDir}/mysqld.sock"; | ||
32 | }; | ||
33 | readOnly = true; | ||
34 | description = '' | ||
35 | Mariadb sockets | ||
36 | ''; | ||
37 | }; | ||
38 | }; | ||
39 | }; | ||
40 | |||
41 | config = lib.mkIf cfg.enable { | ||
42 | networking.firewall.allowedTCPPorts = [ 3306 ]; | ||
43 | |||
44 | # for adminer, ssl is implemented with mysqli only, which is | ||
45 | # currently disabled because it’s not compatible with pam. | ||
46 | # Thus we need to generate two users for each 'remote': one remote | ||
47 | # with SSL, and one localhost without SSL. | ||
48 | # User identified by LDAP: | ||
49 | # CREATE USER foo@% IDENTIFIED VIA pam USING 'mysql' REQUIRE SSL; | ||
50 | # CREATE USER foo@localhost IDENTIFIED VIA pam USING 'mysql'; | ||
51 | services.mysql = { | ||
52 | enable = true; | ||
53 | package = pkgs.mariadb; | ||
54 | dataDir = cfg.dataDir; | ||
55 | extraOptions = '' | ||
56 | ssl_ca = ${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt | ||
57 | ssl_key = /var/lib/acme/mysql/key.pem | ||
58 | ssl_cert = /var/lib/acme/mysql/fullchain.pem | ||
59 | ''; | ||
60 | }; | ||
61 | |||
62 | users.users.mysql.extraGroups = [ "keys" ]; | ||
63 | security.acme.certs."mysql" = config.myServices.databasesCerts // { | ||
64 | user = "mysql"; | ||
65 | group = "mysql"; | ||
66 | plugins = [ "fullchain.pem" "key.pem" "account_key.json" ]; | ||
67 | domain = "db-1.immae.eu"; | ||
68 | postRun = '' | ||
69 | systemctl restart mysql.service | ||
70 | ''; | ||
71 | }; | ||
72 | |||
73 | secrets.keys = [ | ||
74 | { | ||
75 | dest = "mysql/mysqldump"; | ||
76 | permissions = "0400"; | ||
77 | user = "root"; | ||
78 | group = "root"; | ||
79 | text = '' | ||
80 | [mysqldump] | ||
81 | user = root | ||
82 | password = ${myconfig.env.databases.mysql.systemUsers.root} | ||
83 | ''; | ||
84 | } | ||
85 | { | ||
86 | dest = "mysql/pam"; | ||
87 | permissions = "0400"; | ||
88 | user = "mysql"; | ||
89 | group = "mysql"; | ||
90 | text = with myconfig.env.databases.mysql.pam; '' | ||
91 | host ${myconfig.env.ldap.host} | ||
92 | base ${myconfig.env.ldap.base} | ||
93 | binddn ${dn} | ||
94 | bindpw ${password} | ||
95 | pam_filter ${filter} | ||
96 | ssl start_tls | ||
97 | ''; | ||
98 | } | ||
99 | ]; | ||
100 | |||
101 | services.cron = { | ||
102 | enable = true; | ||
103 | systemCronJobs = [ | ||
104 | '' | ||
105 | 30 1,13 * * * root ${pkgs.mariadb}/bin/mysqldump --defaults-file=${config.secrets.location}/mysql/mysqldump --all-databases > ${cfg.dataDir}/backup.sql | ||
106 | '' | ||
107 | ]; | ||
108 | }; | ||
109 | |||
110 | security.pam.services = let | ||
111 | pam_ldap = "${pkgs.pam_ldap}/lib/security/pam_ldap.so"; | ||
112 | in [ | ||
113 | { | ||
114 | name = "mysql"; | ||
115 | text = '' | ||
116 | # https://mariadb.com/kb/en/mariadb/pam-authentication-plugin/ | ||
117 | auth required ${pam_ldap} config=${config.secrets.location}/mysql/pam | ||
118 | account required ${pam_ldap} config=${config.secrets.location}/mysql/pam | ||
119 | ''; | ||
120 | } | ||
121 | ]; | ||
122 | |||
123 | }; | ||
124 | } | ||
125 | |||