| data_dir |
Root directory for daemon DB, socket, and pid file. When empty, pid and socket_path are set from pid and socket_name verbatim (e.g. a full path or TCP endpoint 127.0.0.1:4141 with the tcp URL prefix) |
| pid |
Basename of the pid file within data_dir, or the full pid path when data_dir is empty |
| socket_name |
Basename of the Unix socket within data_dir, or the full connect path when data_dir is empty |