11-06-2014
Thanks for all the responses.
By health, I did mean that the zone is alive/ping-able/running.
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LEARN ABOUT DEBIAN
sam_register
SAM_REGISTER(3) Corosync Cluster Engine Programmer's Manual SAM_REGISTER(3)
NAME
sam_rehister - Register component for health checking
SYNOPSIS
#include <corosync/sam.h>
cs_error_t sam_register (unsigned int *instance_id);
DESCRIPTION
The sam_register function is used to register a process for healthchecking. If recovery policy is set to SAM_RECOVERY_POLICY_RESTART and
recovery action will be taken, the new process instance will begin execution at the next code line after this function is called.
This function can be called only once and SAM must be initialized by sam_initialize(3) function.
The instance_id argument is a pointer to a value storing the current iteration instance. If this parameter is NULL, no instance_id is
returned. and then, no instance_id will be returned. This value starts at 0 for the first iteration instance, and increases by 1 each time
a recovery restart is executed. After reaching MAX_INT, the instance_id will reset to 0.
The placement of this function is important because after it is called, the process id will change.
After registration, event driven health checking is not running.
RETURN VALUE
This call return CS_OK value if successful, otherwise and error is returned.
ERRORS
CS_ERR_BAD_HANDLE
health checking was not started by calling sam_start(3) function.
CS_ERR_LIBRARY
internal library call failed. This can be one of pipe creation or fork. It's possible to get more information from errno.
SEE ALSO
sam_start(3), sam_initialize(3), sam_hc_callback_register(3)
corosync Man Page 12/01/2009 SAM_REGISTER(3)