patroni.postgresql.postmaster module

class patroni.postgresql.postmaster.PostmasterProcess(pid: int)

Bases: Process

__init__(pid: int) None
classmethod _from_pidfile(data_dir: str) PostmasterProcess | None
_is_postmaster_process() bool
static _read_postmaster_pidfile(data_dir: str) Dict[str, str]

Reads and parses postmaster.pid from the data directory

:returns dictionary of values if successful, empty dictionary otherwise

classmethod from_pid(pid: int) PostmasterProcess | None
static from_pidfile(data_dir: str) PostmasterProcess | None
pg_ctl_kill(mode: str, pg_ctl: str) bool | None
signal_kill() bool

to suspend and kill postmaster and all children

:returns True if postmaster and children are killed, False if error

signal_stop(mode: str, pg_ctl: str = 'pg_ctl') bool | None

Signal postmaster process to stop

:returns None if signaled, True if process is already gone, False if error

static start(pgcommand: str, data_dir: str, conf: str, options: List[str]) PostmasterProcess | None
wait_for_user_backends_to_close(stop_timeout: float | None) None
patroni.postgresql.postmaster.pg_ctl_start(conn: Connection, cmdline: List[str], env: Dict[str, str]) None