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{ config, pkgs, lib, ... }:
{
systemd.tmpfiles.rules = [ "d /mnt/postgres/data 0750 postgres postgres" ];
services.postgresql = {
enable = true;
package = pkgs.postgresql_14;
enableTCPIP = true;
authentication = pkgs.lib.mkOverride 10 ''
# TYPE, DATABASE, USER, ADDRESS, METHOD
local all all trust
host all all 127.0.0.1/32 trust
host all all ::1/128 trust
host discordbots discordbots 192.168.1.2/32 trust
host matrix-synapse-rory-gay matrix-synapse-rory-gay 192.168.1.5/32 trust
host all all 0.0.0.0/0 md5
'';
# initialScript = pkgs.writeText "backend-initScript" ''
# CREATE ROLE nixcloud WITH LOGIN PASSWORD 'nixcloud' CREATEDB;
# CREATE DATABASE nixcloud;
# GRANT ALL PRIVILEGES ON DATABASE nixcloud TO nixcloud;
# '';
dataDir = "/mnt/postgres/data";
settings = {
"max_connections" = "100";
"shared_buffers" = "512MB";
"effective_cache_size" = "8192MB";
"max_wal_size" = "1GB";
"min_wal_size" = "80MB";
"work_mem" = "16MB";
"maintenance_work_mem" = "256MB";
"checkpoint_segments" = "64";
"default_statistics_target" = "250";
# can use this to view stats: SELECT query, total_time, calls, rows FROM pg_stat_statements ORDER BY total_time DESC LIMIT 10;
"shared_preload_libraries" = "pg_stat_statements";
"pg_stat_statements.max" = "10000";
"pg_stat_statements.track" = "all";
#we're on virtualised HDDs...
"random_page_cost" = "2.0";
"synchronous_commit" = "off";
};
};
}
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