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nixos/gitlab: postgresql: Make PSQL a function, run as superUser

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A function is more appropriate for this use. See
http://mywiki.wooledge.org/BashFAQ/050 for reference.

Also, we don't need to run the service as root: since we essentially
run all commands as `services.postgresql.superUser` anyway, the whole
service can just run as that user instead.
This commit is contained in:
talyz 2021-02-18 17:33:21 +01:00
parent 2b3800b9c7
commit 53d9ec83ff
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GPG key ID: 2DED2151F4671A2B
1 changed files with 14 additions and 8 deletions
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22
nixos/modules/services/misc/gitlab.nix
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@ -656,29 +656,35 @@ in {
systemd.services.gitlab-postgresql = let pgsql = config.services.postgresql; in mkIf databaseActuallyCreateLocally {
after = [ "postgresql.service" ];
wantedBy = [ "multi-user.target" ];
path = [ pgsql.package ];
path = [
pgsql.package
pkgs.util-linux
];
script = ''
set -eu
PSQL="${pkgs.util-linux}/bin/runuser -u ${pgsql.superUser} -- psql --port=${toString pgsql.port}"
PSQL() {
psql --port=${toString pgsql.port} "$@"
}
$PSQL -tAc "SELECT 1 FROM pg_database WHERE datname = '${cfg.databaseName}'" | grep -q 1 || $PSQL -tAc 'CREATE DATABASE "${cfg.databaseName}" OWNER "${cfg.databaseUsername}"'
current_owner=$($PSQL -tAc "SELECT pg_catalog.pg_get_userbyid(datdba) FROM pg_catalog.pg_database WHERE datname = '${cfg.databaseName}'")
PSQL -tAc "SELECT 1 FROM pg_database WHERE datname = '${cfg.databaseName}'" | grep -q 1 || PSQL -tAc 'CREATE DATABASE "${cfg.databaseName}" OWNER "${cfg.databaseUsername}"'
current_owner=$(PSQL -tAc "SELECT pg_catalog.pg_get_userbyid(datdba) FROM pg_catalog.pg_database WHERE datname = '${cfg.databaseName}'")
if [[ "$current_owner" != "${cfg.databaseUsername}" ]]; then
$PSQL -tAc 'ALTER DATABASE "${cfg.databaseName}" OWNER TO "${cfg.databaseUsername}"'
PSQL -tAc 'ALTER DATABASE "${cfg.databaseName}" OWNER TO "${cfg.databaseUsername}"'
if [[ -e "${config.services.postgresql.dataDir}/.reassigning_${cfg.databaseName}" ]]; then
echo "Reassigning ownership of database ${cfg.databaseName} to user ${cfg.databaseUsername} failed on last boot. Failing..."
exit 1
fi
touch "${config.services.postgresql.dataDir}/.reassigning_${cfg.databaseName}"
$PSQL "${cfg.databaseName}" -tAc "REASSIGN OWNED BY \"$current_owner\" TO \"${cfg.databaseUsername}\""
PSQL "${cfg.databaseName}" -tAc "REASSIGN OWNED BY \"$current_owner\" TO \"${cfg.databaseUsername}\""
rm "${config.services.postgresql.dataDir}/.reassigning_${cfg.databaseName}"
fi
$PSQL '${cfg.databaseName}' -tAc "CREATE EXTENSION IF NOT EXISTS pg_trgm"
$PSQL '${cfg.databaseName}' -tAc "CREATE EXTENSION IF NOT EXISTS btree_gist;"
PSQL '${cfg.databaseName}' -tAc "CREATE EXTENSION IF NOT EXISTS pg_trgm"
PSQL '${cfg.databaseName}' -tAc "CREATE EXTENSION IF NOT EXISTS btree_gist;"
'';
serviceConfig = {
User = pgsql.superUser;
Type = "oneshot";
};
};