{ config, pkgs, ... }: let sslCert = config.security.acme.certs."postgres.pvv.ntnu.no"; in { services.postgresql = { enable = true; package = pkgs.postgresql_15; enableTCPIP = true; dataDir = "/data/postgresql"; authentication = '' local all all md5 host all all 129.241.210.128/25 md5 host all all 2001:700:300:1900::/64 md5 ''; # Hilsen https://pgconfigurator.cybertec-postgresql.com/ settings = { # Connectivity max_connections = 500; superuser_reserved_connections = 3; # Memory Settings shared_buffers = "2048 MB"; work_mem = "32 MB"; maintenance_work_mem = "320 MB"; effective_cache_size = "6 GB"; effective_io_concurrency = 100; random_page_cost = 1.25; # Monitoring shared_preload_libraries = "pg_stat_statements"; track_io_timing = true; track_functions = "pl"; # Replication wal_level = "replica"; max_wal_senders = 0; synchronous_commit = false; # Checkpointing: checkpoint_timeout = "15 min"; checkpoint_completion_target = 0.9; max_wal_size = "1024 MB"; min_wal_size = "512 MB"; # WAL writing wal_compression = true; wal_buffers = -1; # Background writer bgwriter_delay = "200ms"; bgwriter_lru_maxpages = 100; bgwriter_lru_multiplier = 2.0; bgwriter_flush_after = 0; # Parallel queries: max_worker_processes = 8; max_parallel_workers_per_gather = 4; max_parallel_maintenance_workers = 4; max_parallel_workers = 8; parallel_leader_participation = true; # Advanced features enable_partitionwise_join = true; enable_partitionwise_aggregate = true; max_slot_wal_keep_size = "1000 MB"; track_wal_io_timing = true; maintenance_io_concurrency = 100; wal_recycle = true; # SSL ssl = true; ssl_cert_file = "/run/credentials/postgresql.service/cert"; ssl_key_file = "/run/credentials/postgresql.service/key"; }; }; systemd.services.postgresql.serviceConfig = { LoadCredential = [ "cert:${sslCert.directory}/cert.pem" "key:${sslCert.directory}/key.pem" ]; }; users.groups.acme.members = [ "postgres" ]; networking.firewall.allowedTCPPorts = [ 5432 ]; networking.firewall.allowedUDPPorts = [ 5432 ]; services.postgresqlBackup = { enable = true; location = "/var/lib/postgres/backups"; backupAll = true; }; }