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Move permissions setup for pgadmin to one-off service

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Eli Ribble 2026-05-08 20:53:34 +00:00
parent a2ca482b0b
commit 997584dcd7
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1 changed files with 44 additions and 13 deletions
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55
modules/system/pgadmin.nix
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@ -2,6 +2,7 @@
with lib;
let
databaseName = "nidus-sync";
dbUsername = "pgadmin";
cfg = config.myModules.pgadmin;
group = "root";
@ -35,7 +36,7 @@ in {
# Pre-configure the database server
Servers = {
"1" = {
Name = "Local nidus-sync";
Name = "Local ${databaseName}";
Group = "Servers";
Host = "/run/postgresql"; # unix socket directory
Port = 5432;
@ -52,20 +53,50 @@ in {
ensureClauses.login = true;
name = dbUsername;
}];
initialScript = pkgs.writeText "postgresql-init.sql" ''
};
systemd.services.pgadmin-setup-permissions = {
description = "Setup read-only permissions for pgadmin user";
after = [ "postgresql.service" ];
requires = [ "postgresql.service" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "oneshot";
User = "postgres";
RemainAfterExit = true;
};
script = ''
${config.services.postgresql.package}/bin/psql -d ${databaseName} << 'EOF'
-- Grant connection to database
GRANT CONNECT ON DATABASE "nidus-sync" TO ${dbUsername};
GRANT CONNECT ON DATABASE ${databaseName} TO pgadmin;
-- Connect to the database and grant schema usage
\c nidus-sync
GRANT USAGE ON SCHEMA public TO ${dbUsername};
-- Grant SELECT on all existing tables
GRANT SELECT ON ALL TABLES IN SCHEMA public TO ${dbUsername};
-- GRANT SELECT on all future tables
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO ${dbUsername};
-- Dynamically grant permissions on all non-system schemas
DO $$
DECLARE
schema_name text;
BEGIN
FOR schema_name IN
SELECT nspname
FROM pg_namespace
WHERE nspname NOT IN ('pg_catalog', 'information_schema', 'pg_toast')
AND nspname NOT LIKE 'pg_temp%'
AND nspname NOT LIKE 'pg_toast_temp%'
LOOP
EXECUTE format('GRANT USAGE ON SCHEMA %I TO pgadmin', schema_name);
EXECUTE format('GRANT SELECT ON ALL TABLES IN SCHEMA %I TO pgadmin', schema_name);
EXECUTE format('GRANT SELECT ON ALL SEQUENCES IN SCHEMA %I TO pgadmin', schema_name);
EXECUTE format('ALTER DEFAULT PRIVILEGES IN SCHEMA %I GRANT SELECT ON TABLES TO pgadmin', schema_name);
END LOOP;
END $$;
EOF
'';
# This ensures the service runs again when you deploy changes
restartTriggers = [
config.services.postgresql.package
"${databaseName}"
];
};
sops.secrets."pgadmin-initial-password-file" = {
format = "yaml";