C++ (Cpp) check_snmp_rs_trap Examples

Example #1

File: ipwrapper.c Project: Distrotech/keepalived

/* Remove a realserver IPVS rule */
static int
clear_service_rs(virtual_server_t * vs, list l)
{
	element e;
	real_server_t *rs;
	long weight_sum;
	long down_threshold = vs->quorum - vs->hysteresis;

	for (e = LIST_HEAD(l); e; ELEMENT_NEXT(e)) {
		rs = ELEMENT_DATA(e);
		if (ISALIVE(rs)) {
			log_message(LOG_INFO, "Removing service %s from VS %s"
						, FMT_RS(rs)
						, FMT_VS(vs));
			if (!ipvs_cmd(LVS_CMD_DEL_DEST, vs, rs))
				return 0;
			UNSET_ALIVE(rs);
			if (!vs->omega)
				continue;

			/* In Omega mode we call VS and RS down notifiers
			 * all the way down the exit, as necessary.
			 */
			if (rs->notify_down) {
				log_message(LOG_INFO, "Executing [%s] for service %s in VS %s"
						    , rs->notify_down
						    , FMT_RS(rs)
						    , FMT_VS(vs));
				notify_exec(rs->notify_down);
			}
#ifdef _WITH_SNMP_
			check_snmp_rs_trap(rs, vs);
#endif

			/* Sooner or later VS will lose the quorum (if any). However,
			 * we don't push in a sorry server then, hence the regression
			 * is intended.
			 */
			weight_sum = weigh_live_realservers(vs);
			if (vs->quorum_state == UP && (
				!weight_sum ||
				weight_sum < down_threshold)
			) {
				vs->quorum_state = DOWN;
				if (vs->quorum_down) {
					log_message(LOG_INFO, "Executing [%s] for VS %s"
							    , vs->quorum_down
							    , FMT_VS(vs));
					notify_exec(vs->quorum_down);
				}
#ifdef _WITH_SNMP_
				check_snmp_quorum_trap(vs);
#endif
			}
		}
	}

	return 1;
}

Example #2

File: ipwrapper.c Project: F191919/keepalived

/* manipulate add/remove rs according to alive state */
static int
perform_svr_state(int alive, virtual_server_t * vs, real_server_t * rs)
{
	/*
	 * | ISALIVE(rs) | alive | context
	 * | 0           | 0     | first check failed under alpha mode, unreachable here
	 * | 0           | 1     | RS went up, add it to the pool
	 * | 1           | 0     | RS went down, remove it from the pool
	 * | 1           | 1     | first check succeeded w/o alpha mode, unreachable here
	 */
	if (!ISALIVE(rs) && alive) {
		log_message(LOG_INFO, "%s service %s to VS %s"
				    , (rs->inhibit) ? "Enabling" : "Adding"
				    , FMT_RS(rs)
				    , FMT_VS(vs));
		/* Add only if we have quorum or no sorry server */
		if (vs->quorum_state == UP || !vs->s_svr || !ISALIVE(vs->s_svr)) {
			if (ipvs_cmd(LVS_CMD_ADD_DEST, vs, rs))
				return -1;
		}
		rs->alive = alive;
		if (rs->notify_up) {
			log_message(LOG_INFO, "Executing [%s] for service %s in VS %s"
					    , rs->notify_up
					    , FMT_RS(rs)
					    , FMT_VS(vs));
			notify_exec(rs->notify_up);
		}
#ifdef _WITH_SNMP_CHECKER_
		check_snmp_rs_trap(rs, vs);
#endif

		/* We may have gained quorum */
		update_quorum_state(vs);
	}

	if (ISALIVE(rs) && !alive) {
		log_message(LOG_INFO, "%s service %s from VS %s"
				    , (rs->inhibit) ? "Disabling" : "Removing"
				    , FMT_RS(rs)
				    , FMT_VS(vs));

		/* server is down, it is removed from the LVS realserver pool
		 * Remove only if we have quorum or no sorry server
		 */
		if (vs->quorum_state == UP || !vs->s_svr || !ISALIVE(vs->s_svr)) {
			if (ipvs_cmd(LVS_CMD_DEL_DEST, vs, rs))
				return -1;
		}
		rs->alive = alive;
		if (rs->notify_down) {
			log_message(LOG_INFO, "Executing [%s] for service %s in VS %s"
					    , rs->notify_down
					    , FMT_RS(rs)
					    , FMT_VS(vs));
			notify_exec(rs->notify_down);
		}
#ifdef _WITH_SNMP_CHECKER_
		check_snmp_rs_trap(rs, vs);
#endif

		/* We may have lost quorum */
		update_quorum_state(vs);
	}
	return 0;
}