patroni.watchdog.linux module¶

patroni.watchdog.linux.IOC(dir_: int, type_: str, nr: int, size: int) → int ¶

class patroni.watchdog.linux.LinuxWatchdogDevice(device: str)¶

Bases: patroni.watchdog.base.WatchdogBase

property can_be_disabled¶: Returns True when watchdog will be disabled by calling close(). Some watchdog devices will keep running no matter what once activated. May raise WatchdogError if called without calling open() first.

classmethod from_config(config: Dict[str, Any]) → patroni.watchdog.linux.LinuxWatchdogDevice ¶

has_set_timeout() → bool ¶: Returns True if setting a timeout is supported.

property is_healthy¶: Returns False when calling open() is known to fail.

property is_running¶: Returns True when watchdog is activated and capable of performing it’s task.

keepalive() → None ¶

Resets the watchdog timer.

Watchdog must be open when keepalive is called.

open() → None ¶

Open watchdog device.

When watchdog is opened keepalive must be called. Returns nothing on success or raises WatchdogError if the device could not be opened.

set_timeout(timeout: int) → None ¶

Set the watchdog timer timeout.

class patroni.watchdog.linux.TestingWatchdogDevice(device: str)¶

Converts timeout ioctls to regular writes that can be intercepted from a named pipe.

set_timeout(timeout: int) → None ¶

Set the watchdog timer timeout.

class patroni.watchdog.linux.WatchdogInfo(options: int, version: int, identity: str)¶

Bases: NamedTuple

Watchdog descriptor from the kernel

class patroni.watchdog.linux.watchdog_info¶

Bases: _ctypes.Structure