nixos-servers/modules/custom/terraform-database.nix

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{ pkgs, lib, config, ... }:
let cfg = config.custom.terraformDatabase;
in {
options = {
custom = {
terraformDatabase.enable = lib.mkOption {
default = false;
type = lib.types.bool;
description = ''
Whether to start a postgreSQL database for Terraform states
'';
};
};
};
config = lib.mkIf cfg.enable {
services.postgresql = {
enable = true;
ensureDatabases = [ "terraformstates" ];
package = pkgs.postgresql_15;
enableTCPIP = true;
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dataDir = lib.mkIf config.custom.dataDisk.enable
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"${config.custom.dataDisk.mountPoint}/postgresql/${config.services.postgresql.package.psqlSchema}";
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authentication = ''
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hostssl terraformstates terraform all cert
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'';
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settings =
let
serverCert = builtins.toFile "postgresql_server.crt"
(builtins.readFile ../../postgresql_server.crt);
in
{
ssl = true;
ssl_cert_file = serverCert;
ssl_key_file = config.age.secrets."postgresql_server.key".path;
ssl_ca_file = serverCert;
};
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ensureUsers = [{
name = "terraform";
ensurePermissions = { "DATABASE terraformstates" = "ALL PRIVILEGES"; };
}];
};
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networking.firewall.allowedTCPPorts = [ 5432 ];
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age.secrets."postgresql_server.key" = {
file = ../../secrets/postgresql_server.key.age;
mode = "400";
owner = builtins.toString config.ids.uids.postgres;
group = builtins.toString config.ids.gids.postgres;
};
};
}