2009-12-03 04:20:24 -08:00
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{ config, pkgs, ... }:
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with pkgs.lib;
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2009-03-06 04:27:02 -08:00
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2007-12-02 20:48:31 -08:00
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let
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2008-02-18 03:56:43 -08:00
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cfg = config.services.postgresql;
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2010-05-09 13:42:00 -07:00
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# see description of extraPlugins
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postgresqlAndPlugins = pg:
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if cfg.extraPlugins == [] then pg
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2010-11-03 15:37:39 -07:00
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else pkgs.buildEnv {
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2012-03-19 11:06:18 -07:00
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name = "postgresql-and-plugins-${(builtins.parseDrvName pg.name).version}";
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2010-05-09 13:42:00 -07:00
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paths = [ pg ] ++ cfg.extraPlugins;
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2010-11-03 15:37:39 -07:00
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postBuild =
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''
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mkdir -p $out/bin
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rm $out/bin/{pg_config,postgres,pg_ctl}
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cp --target-directory=$out/bin ${pg}/bin/{postgres,pg_config,pg_ctl}
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'';
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};
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2010-05-09 13:42:00 -07:00
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2012-08-15 14:01:19 -07:00
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postgresql = postgresqlAndPlugins cfg.package;
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2008-02-18 03:56:43 -08:00
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2009-12-03 04:20:24 -08:00
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flags = optional cfg.enableTCPIP "-i";
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2009-05-15 01:00:20 -07:00
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2009-12-02 09:18:25 -08:00
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# The main PostgreSQL configuration file.
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configFile = pkgs.writeText "postgresql.conf"
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''
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hba_file = '${pkgs.writeText "pg_hba.conf" cfg.authentication}'
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ident_file = '${pkgs.writeText "pg_ident.conf" cfg.identMap}'
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2013-07-13 19:57:50 -07:00
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log_destination = 'stderr'
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2011-06-27 03:15:26 -07:00
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${cfg.extraConfig}
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2011-09-14 11:20:50 -07:00
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'';
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2009-12-02 09:18:25 -08:00
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2012-03-19 11:06:18 -07:00
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pre84 = versionOlder (builtins.parseDrvName postgresql.name).version "8.4";
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2012-08-06 08:45:59 -07:00
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2007-12-02 20:48:31 -08:00
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in
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2008-02-18 03:56:43 -08:00
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2009-07-15 04:19:11 -07:00
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{
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###### interface
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2011-09-14 11:20:50 -07:00
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2009-07-15 04:19:11 -07:00
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options = {
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2011-09-14 11:20:50 -07:00
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2009-07-15 04:19:11 -07:00
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services.postgresql = {
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2011-09-14 11:20:50 -07:00
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2009-07-15 04:19:11 -07:00
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enable = mkOption {
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default = false;
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description = ''
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Whether to run PostgreSQL.
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'';
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};
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2011-09-14 11:20:50 -07:00
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2012-08-15 14:01:19 -07:00
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package = mkOption {
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2013-04-04 09:21:51 -07:00
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example = literalExample "pkgs.postgresql92";
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2012-08-15 14:01:19 -07:00
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description = ''
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PostgreSQL package to use.
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'';
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};
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2009-07-15 04:19:11 -07:00
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port = mkOption {
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default = "5432";
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description = ''
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Port for PostgreSQL.
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'';
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};
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2011-09-14 11:20:50 -07:00
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2009-07-15 04:19:11 -07:00
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dataDir = mkOption {
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2013-04-05 06:20:50 -07:00
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default = "/var/db/postgresql";
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2009-07-15 04:19:11 -07:00
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description = ''
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Data directory for PostgreSQL.
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'';
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};
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2011-09-14 11:20:50 -07:00
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2009-07-15 04:19:11 -07:00
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authentication = mkOption {
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2012-03-19 09:49:13 -07:00
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default = "";
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2009-07-15 04:19:11 -07:00
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description = ''
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2009-12-02 09:18:25 -08:00
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Defines how users authenticate themselves to the server.
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2009-07-15 04:19:11 -07:00
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'';
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};
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2011-09-14 11:20:50 -07:00
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2009-12-02 09:18:25 -08:00
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identMap = mkOption {
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default = "";
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2009-07-15 04:19:11 -07:00
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description = ''
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2009-12-02 09:18:25 -08:00
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Defines the mapping from system users to database users.
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2009-07-15 04:19:11 -07:00
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'';
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};
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2011-09-14 11:20:50 -07:00
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2013-07-13 20:01:48 -07:00
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initialScript = mkOption {
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default = null;
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type = types.nullOr types.path;
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description = ''
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A file containing SQL statements to execute on first startup.
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'';
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};
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2009-07-15 04:19:11 -07:00
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authMethod = mkOption {
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default = " ident sameuser ";
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description = ''
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2011-09-14 11:20:50 -07:00
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How to authorize users.
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2009-07-15 04:19:11 -07:00
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Note: ident needs absolute trust to all allowed client hosts.
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'';
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};
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2011-09-14 11:20:50 -07:00
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2009-07-15 04:19:11 -07:00
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enableTCPIP = mkOption {
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default = false;
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description = ''
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Whether to run PostgreSQL with -i flag to enable TCP/IP connections.
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'';
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};
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2010-05-09 13:42:00 -07:00
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extraPlugins = mkOption {
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default = [];
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example = "pkgs.postgis"; # of course don't use a string here!
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description = ''
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2010-06-13 13:59:49 -07:00
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When this list contains elements a new store path is created.
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PostgreSQL and the elments are symlinked into it. Then pg_config,
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2010-05-09 13:42:00 -07:00
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postgres and pc_ctl are copied to make them use the new
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2010-06-13 13:59:49 -07:00
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$out/lib directory as pkglibdir. This makes it possible to use postgis
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2010-05-09 13:42:00 -07:00
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without patching the .sql files which reference $libdir/postgis-1.5.
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'';
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# Note: the duplication of executables is about 4MB size.
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# So a nicer solution was patching postgresql to allow setting the
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# libdir explicitely.
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};
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2011-09-14 11:20:50 -07:00
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2011-06-27 03:15:26 -07:00
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extraConfig = mkOption {
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default = "";
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description = "Additional text to be appended to <filename>postgresql.conf</filename>.";
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};
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2013-07-13 20:04:10 -07:00
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recoveryConfig = mkOption {
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default = null;
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type = types.nullOr types.string;
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description = ''
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Values to put into recovery.conf file.
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'';
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};
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2009-07-15 04:19:11 -07:00
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};
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};
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2008-02-18 03:56:43 -08:00
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2009-07-15 04:19:11 -07:00
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###### implementation
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2011-09-14 11:20:50 -07:00
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2009-07-15 04:19:11 -07:00
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config = mkIf config.services.postgresql.enable {
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2012-03-19 09:49:13 -07:00
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services.postgresql.authentication =
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''
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# Generated file; do not edit!
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2012-03-19 11:06:18 -07:00
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local all all ident ${optionalString pre84 "sameuser"}
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2012-03-19 09:49:13 -07:00
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host all all 127.0.0.1/32 md5
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host all all ::1/128 md5
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'';
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2012-08-06 08:45:59 -07:00
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2009-07-15 04:19:11 -07:00
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users.extraUsers = singleton
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2009-03-06 04:27:02 -08:00
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{ name = "postgres";
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description = "PostgreSQL server user";
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2009-07-15 04:19:11 -07:00
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};
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2009-03-06 04:27:02 -08:00
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2009-07-15 04:19:11 -07:00
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users.extraGroups = singleton
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{ name = "postgres"; };
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2009-03-06 04:27:02 -08:00
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2009-07-15 04:19:11 -07:00
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environment.systemPackages = [postgresql];
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2009-03-06 04:27:02 -08:00
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2013-01-16 03:33:18 -08:00
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systemd.services.postgresql =
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2012-12-18 04:40:04 -08:00
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{ description = "PostgreSQL Server";
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2009-03-06 04:27:02 -08:00
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2012-08-14 15:15:37 -07:00
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wantedBy = [ "multi-user.target" ];
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2012-12-18 04:40:04 -08:00
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after = [ "network.target" ];
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2009-03-06 04:27:02 -08:00
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2013-04-22 09:56:19 -07:00
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environment.PGDATA = cfg.dataDir;
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2009-11-06 14:56:47 -08:00
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2012-03-19 09:49:13 -07:00
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path = [ pkgs.su postgresql ];
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2009-10-12 10:09:38 -07:00
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preStart =
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''
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2009-11-06 15:37:31 -08:00
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# Initialise the database.
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2009-03-06 04:27:02 -08:00
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if ! test -e ${cfg.dataDir}; then
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mkdir -m 0700 -p ${cfg.dataDir}
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chown -R postgres ${cfg.dataDir}
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2012-10-01 13:47:54 -07:00
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su -s ${pkgs.stdenv.shell} postgres -c 'initdb -U root'
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2009-12-02 09:18:25 -08:00
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rm -f ${cfg.dataDir}/*.conf
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2013-07-13 20:01:48 -07:00
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touch "${cfg.dataDir}/.first_startup"
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2009-03-06 04:27:02 -08:00
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fi
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2009-12-02 09:18:25 -08:00
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2013-07-13 20:04:10 -07:00
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ln -sfn "${configFile}" "${cfg.dataDir}/postgresql.conf"
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${optionalString (cfg.recoveryConfig != null) ''
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ln -sfn "${pkgs.writeText "recovery.conf" cfg.recoveryConfig}" \
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"${cfg.dataDir}/recovery.conf"
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''}
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2012-03-19 09:49:13 -07:00
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''; # */
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2009-11-06 15:37:31 -08:00
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2012-08-06 08:45:59 -07:00
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serviceConfig =
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2012-10-01 13:47:54 -07:00
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{ ExecStart = "@${postgresql}/bin/postgres postgres ${toString flags}";
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User = "postgres";
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Group = "postgres";
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PermissionsStartOnly = true;
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# Shut down Postgres using SIGINT ("Fast Shutdown mode"). See
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2012-04-30 11:15:32 -07:00
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# http://www.postgresql.org/docs/current/static/server-shutdown.html
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2012-10-01 13:27:42 -07:00
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KillSignal = "SIGINT";
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2012-04-30 11:15:32 -07:00
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2012-03-19 09:49:13 -07:00
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# Give Postgres a decent amount of time to clean up after
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2012-08-06 08:45:59 -07:00
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# receiving systemd's SIGINT.
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2013-05-07 05:59:08 -07:00
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TimeoutSec = 120;
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2012-10-01 13:27:42 -07:00
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};
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2012-10-01 13:47:54 -07:00
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# Wait for PostgreSQL to be ready to accept connections.
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postStart =
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''
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2012-12-19 03:59:28 -08:00
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while ! psql postgres -c "" 2> /dev/null; do
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if ! kill -0 "$MAINPID"; then exit 1; fi
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2012-10-01 14:32:03 -07:00
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sleep 0.1
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2012-10-01 13:47:54 -07:00
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done
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2013-07-13 20:01:48 -07:00
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if test -e "${cfg.dataDir}/.first_startup"; then
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${optionalString (cfg.initialScript != null) ''
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cat "${cfg.initialScript}" | psql postgres
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''}
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rm -f "${cfg.dataDir}/.first_startup"
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fi
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2012-10-01 13:47:54 -07:00
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'';
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2012-10-01 13:53:13 -07:00
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unitConfig.RequiresMountsFor = "${cfg.dataDir}";
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2009-10-12 10:09:38 -07:00
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};
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2009-07-15 04:19:11 -07:00
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2009-03-06 04:27:02 -08:00
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};
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2011-09-14 11:20:50 -07:00
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2007-12-02 20:48:31 -08:00
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}
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