777 lines
26 KiB
C
777 lines
26 KiB
C
/*****************************************************************************
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*
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* FLAPPING.C - State flap detection and handling routines for Nagios
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*
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*
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* License:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*****************************************************************************/
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/*********** COMMON HEADER FILES ***********/
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#include "../include/config.h"
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#include "../include/common.h"
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#include "../include/objects.h"
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#include "../include/comments.h"
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#include "../include/statusdata.h"
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#include "../include/nagios.h"
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#include "../include/broker.h"
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/******************************************************************/
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/******************** FLAP DETECTION FUNCTIONS ********************/
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/******************************************************************/
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/* detects service flapping */
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void check_for_service_flapping(service *svc, int update, int allow_flapstart_notification) {
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int update_history = TRUE;
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int is_flapping = FALSE;
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register int x = 0;
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register int y = 0;
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int last_state_history_value = STATE_OK;
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double curved_changes = 0.0;
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double curved_percent_change = 0.0;
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double low_threshold = 0.0;
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double high_threshold = 0.0;
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double low_curve_value = 0.75;
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double high_curve_value = 1.25;
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/* large install tweaks skips all flap detection logic - including state change calculation */
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log_debug_info(DEBUGL_FUNCTIONS, 0, "check_for_service_flapping()\n");
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if(svc == NULL)
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return;
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log_debug_info(DEBUGL_FLAPPING, 1, "Checking service '%s' on host '%s' for flapping...\n", svc->description, svc->host_name);
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/* if this is a soft service state and not a soft recovery, don't record this in the history */
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/* only hard states and soft recoveries get recorded for flap detection */
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if(svc->state_type == SOFT_STATE && svc->current_state != STATE_OK)
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return;
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/* what threshold values should we use (global or service-specific)? */
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low_threshold = (svc->low_flap_threshold <= 0.0) ? low_service_flap_threshold : svc->low_flap_threshold;
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high_threshold = (svc->high_flap_threshold <= 0.0) ? high_service_flap_threshold : svc->high_flap_threshold;
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update_history = update;
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/* should we update state history for this state? */
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if(update_history == TRUE) {
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if(!should_flap_detect(svc))
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update_history = FALSE;
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}
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/* record current service state */
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if(update_history == TRUE) {
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/* record the current state in the state history */
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svc->state_history[svc->state_history_index] = svc->current_state;
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/* increment state history index to next available slot */
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svc->state_history_index++;
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if(svc->state_history_index >= MAX_STATE_HISTORY_ENTRIES)
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svc->state_history_index = 0;
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}
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/* calculate overall and curved percent state changes */
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for(x = 0, y = svc->state_history_index; x < MAX_STATE_HISTORY_ENTRIES; x++) {
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if(x == 0) {
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last_state_history_value = svc->state_history[y];
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y++;
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if(y >= MAX_STATE_HISTORY_ENTRIES)
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y = 0;
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continue;
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}
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if(last_state_history_value != svc->state_history[y])
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curved_changes += (((double)(x - 1) * (high_curve_value - low_curve_value)) / ((double)(MAX_STATE_HISTORY_ENTRIES - 2))) + low_curve_value;
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last_state_history_value = svc->state_history[y];
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y++;
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if(y >= MAX_STATE_HISTORY_ENTRIES)
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y = 0;
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}
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/* calculate overall percent change in state */
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curved_percent_change = (double)(((double)curved_changes * 100.0) / (double)(MAX_STATE_HISTORY_ENTRIES - 1));
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svc->percent_state_change = curved_percent_change;
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log_debug_info(DEBUGL_FLAPPING, 2, "LFT=%.2f, HFT=%.2f, CPC=%.2f, PSC=%.2f%%\n", low_threshold, high_threshold, curved_percent_change, curved_percent_change);
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/* don't do anything if we don't have flap detection enabled
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on a program-wide basis or for this service */
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if(enable_flap_detection == FALSE || svc->flap_detection_enabled == FALSE) {
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if(svc->is_flapping == TRUE)
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clear_service_flap(svc, curved_percent_change, high_threshold, low_threshold, 1);
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return;
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}
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/* are we flapping, undecided, or what?... */
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/* we're undecided, so don't change the current flap state */
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if(curved_percent_change > low_threshold && curved_percent_change < high_threshold)
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return;
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/* we're below the lower bound, so we're not flapping */
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else if(curved_percent_change <= low_threshold)
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is_flapping = FALSE;
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/* else we're above the upper bound, so we are flapping */
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else if(curved_percent_change >= high_threshold)
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is_flapping = TRUE;
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log_debug_info(DEBUGL_FLAPPING, 1, "Service %s flapping (%.2f%% state change).\n", (is_flapping == TRUE) ? "is" : "is not", curved_percent_change);
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/* did the service just start flapping? */
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if(is_flapping == TRUE && svc->is_flapping == FALSE)
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set_service_flap(svc, curved_percent_change, high_threshold, low_threshold, allow_flapstart_notification);
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/* did the service just stop flapping? */
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else if(is_flapping == FALSE && svc->is_flapping == TRUE)
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clear_service_flap(svc, curved_percent_change, high_threshold, low_threshold, 0);
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return;
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}
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/* detects host flapping */
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void check_for_host_flapping(host *hst, int update, int actual_check, int allow_flapstart_notification) {
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int update_history = TRUE;
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int is_flapping = FALSE;
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register int x = 0;
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register int y = 0;
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int last_state_history_value = HOST_UP;
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unsigned long wait_threshold = 0L;
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double curved_changes = 0.0;
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double curved_percent_change = 0.0;
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time_t current_time = 0L;
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double low_threshold = 0.0;
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double high_threshold = 0.0;
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double low_curve_value = 0.75;
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double high_curve_value = 1.25;
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log_debug_info(DEBUGL_FUNCTIONS, 0, "check_for_host_flapping()\n");
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if(hst == NULL)
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return;
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log_debug_info(DEBUGL_FLAPPING, 1, "Checking host '%s' for flapping...\n", hst->name);
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time(¤t_time);
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/* period to wait for updating archived state info if we have no state change */
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if(hst->total_services == 0)
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wait_threshold = hst->notification_interval * interval_length;
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else
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wait_threshold = (hst->total_service_check_interval * interval_length) / hst->total_services;
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update_history = update;
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/* should we update state history for this state? */
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if(update_history == TRUE) {
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if(!(hst->flap_detection_options & (1 << hst->current_state)))
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update_history = FALSE;
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}
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/* if we didn't have an actual check, only update if we've waited long enough */
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if(update_history == TRUE && actual_check == FALSE && (current_time - hst->last_state_history_update) < wait_threshold) {
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update_history = FALSE;
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}
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/* what thresholds should we use (global or host-specific)? */
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low_threshold = (hst->low_flap_threshold <= 0.0) ? low_host_flap_threshold : hst->low_flap_threshold;
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high_threshold = (hst->high_flap_threshold <= 0.0) ? high_host_flap_threshold : hst->high_flap_threshold;
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/* record current host state */
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if(update_history == TRUE) {
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/* update the last record time */
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hst->last_state_history_update = current_time;
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/* record the current state in the state history */
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hst->state_history[hst->state_history_index] = hst->current_state;
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/* increment state history index to next available slot */
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hst->state_history_index++;
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if(hst->state_history_index >= MAX_STATE_HISTORY_ENTRIES)
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hst->state_history_index = 0;
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}
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/* calculate overall changes in state */
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for(x = 0, y = hst->state_history_index; x < MAX_STATE_HISTORY_ENTRIES; x++) {
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if(x == 0) {
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last_state_history_value = hst->state_history[y];
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y++;
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if(y >= MAX_STATE_HISTORY_ENTRIES)
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y = 0;
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continue;
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}
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if(last_state_history_value != hst->state_history[y])
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curved_changes += (((double)(x - 1) * (high_curve_value - low_curve_value)) / ((double)(MAX_STATE_HISTORY_ENTRIES - 2))) + low_curve_value;
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last_state_history_value = hst->state_history[y];
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y++;
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if(y >= MAX_STATE_HISTORY_ENTRIES)
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y = 0;
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}
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/* calculate overall percent change in state */
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curved_percent_change = (double)(((double)curved_changes * 100.0) / (double)(MAX_STATE_HISTORY_ENTRIES - 1));
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hst->percent_state_change = curved_percent_change;
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log_debug_info(DEBUGL_FLAPPING, 2, "LFT=%.2f, HFT=%.2f, CPC=%.2f, PSC=%.2f%%\n", low_threshold, high_threshold, curved_percent_change, curved_percent_change);
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/* don't do anything if we don't have flap detection enabled
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on a program-wide basis or for this service */
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if(enable_flap_detection == FALSE || hst->flap_detection_enabled == FALSE) {
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if(hst->is_flapping == TRUE)
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clear_host_flap(hst, curved_percent_change, high_threshold, low_threshold, 1);
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return;
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}
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/* are we flapping, undecided, or what?... */
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/* we're undecided, so don't change the current flap state */
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if(curved_percent_change > low_threshold && curved_percent_change < high_threshold)
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return;
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/* we're below the lower bound, so we're not flapping */
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else if(curved_percent_change <= low_threshold)
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is_flapping = FALSE;
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/* else we're above the upper bound, so we are flapping */
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else if(curved_percent_change >= high_threshold)
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is_flapping = TRUE;
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log_debug_info(DEBUGL_FLAPPING, 1, "Host %s flapping (%.2f%% state change).\n", (is_flapping == TRUE) ? "is" : "is not", curved_percent_change);
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/* did the host just start flapping? */
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if(is_flapping == TRUE && hst->is_flapping == FALSE)
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set_host_flap(hst, curved_percent_change, high_threshold, low_threshold, allow_flapstart_notification);
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/* did the host just stop flapping? */
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else if(is_flapping == FALSE && hst->is_flapping == TRUE)
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clear_host_flap(hst, curved_percent_change, high_threshold, low_threshold, 0);
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return;
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}
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/******************************************************************/
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/********************* FLAP HANDLING FUNCTIONS ********************/
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/******************************************************************/
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/* handles a service that is flapping */
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void set_service_flap(service *svc, double percent_change, double high_threshold, double low_threshold, int allow_flapstart_notification) {
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char *temp_buffer = NULL;
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log_debug_info(DEBUGL_FUNCTIONS, 0, "set_service_flap()\n");
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if(svc == NULL)
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return;
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log_debug_info(DEBUGL_FLAPPING, 1, "Service '%s' on host '%s' started flapping!\n", svc->description, svc->host_name);
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/* log a notice - this one is parsed by the history CGI */
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logit(NSLOG_RUNTIME_WARNING, FALSE, "SERVICE FLAPPING ALERT: %s;%s;STARTED; Service appears to have started flapping (%2.1f%% change >= %2.1f%% threshold)\n", svc->host_name, svc->description, percent_change, high_threshold);
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/* add a non-persistent comment to the service */
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asprintf(&temp_buffer, "Notifications for this service are being suppressed because it was detected as having been flapping between different states (%2.1f%% change >= %2.1f%% threshold). When the service state stabilizes and the flapping stops, notifications will be re-enabled.", percent_change, high_threshold);
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add_new_service_comment(FLAPPING_COMMENT, svc->host_name, svc->description, time(NULL), "(Nagios Process)", temp_buffer, 0, COMMENTSOURCE_INTERNAL, FALSE, (time_t)0, &(svc->flapping_comment_id));
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my_free(temp_buffer);
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/* set the flapping indicator */
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svc->is_flapping = TRUE;
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#ifdef USE_EVENT_BROKER
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/* send data to event broker */
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broker_flapping_data(NEBTYPE_FLAPPING_START, NEBFLAG_NONE, NEBATTR_NONE, SERVICE_FLAPPING, svc, percent_change, high_threshold, low_threshold, NULL);
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#endif
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/* see if we should check to send a recovery notification out when flapping stops */
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if(svc->current_state != STATE_OK && svc->current_notification_number > 0)
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svc->check_flapping_recovery_notification = TRUE;
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else
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svc->check_flapping_recovery_notification = FALSE;
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/* send a notification */
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if(allow_flapstart_notification == TRUE)
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service_notification(svc, NOTIFICATION_FLAPPINGSTART, NULL, NULL, NOTIFICATION_OPTION_NONE);
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return;
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}
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/* handles a service that has stopped flapping */
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void clear_service_flap(service *svc, double percent_change, double high_threshold, double low_threshold, int is_disabled) {
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log_debug_info(DEBUGL_FUNCTIONS, 0, "clear_service_flap()\n");
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if(svc == NULL)
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return;
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if (is_disabled == 0) {
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log_debug_info(DEBUGL_FLAPPING, 1, "Service '%s' on host '%s' stopped flapping.\n", svc->description, svc->host_name);
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/* log a notice - this one is parsed by the history CGI */
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logit(NSLOG_INFO_MESSAGE, FALSE, "SERVICE FLAPPING ALERT: %s;%s;STOPPED; Service appears to have stopped flapping (%2.1f%% change < %2.1f%% threshold)\n", svc->host_name, svc->description, percent_change, low_threshold);
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} else {
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log_debug_info(DEBUGL_FLAPPING, 1, "Disabled flap detection for service '%s' on host '%s'.\n", svc->description, svc->host_name);
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/* log a notice - this one is parsed by the history CGI */
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logit(NSLOG_INFO_MESSAGE, FALSE, "SERVICE FLAPPING ALERT: %s;%s;STOPPED; Disabled flap detection for service\n", svc->host_name, svc->description);
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}
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/* delete the comment we added earlier */
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if(svc->flapping_comment_id != 0)
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delete_service_comment(svc->flapping_comment_id);
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svc->flapping_comment_id = 0;
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/* clear the flapping indicator */
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svc->is_flapping = FALSE;
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#ifdef USE_EVENT_BROKER
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/* send data to event broker */
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broker_flapping_data(NEBTYPE_FLAPPING_STOP, NEBFLAG_NONE, NEBATTR_FLAPPING_STOP_NORMAL, SERVICE_FLAPPING, svc, percent_change, high_threshold, low_threshold, NULL);
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#endif
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if (is_disabled == 0) {
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/* send a notification */
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service_notification(svc, NOTIFICATION_FLAPPINGSTOP, NULL, NULL, NOTIFICATION_OPTION_NONE);
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/* should we send a recovery notification? */
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if(svc->check_flapping_recovery_notification == TRUE && svc->current_state == STATE_OK)
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service_notification(svc, NOTIFICATION_NORMAL, NULL, NULL, NOTIFICATION_OPTION_NONE);
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}
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/* clear the recovery notification flag */
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svc->check_flapping_recovery_notification = FALSE;
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return;
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}
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/* handles a host that is flapping */
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void set_host_flap(host *hst, double percent_change, double high_threshold, double low_threshold, int allow_flapstart_notification) {
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char *temp_buffer = NULL;
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log_debug_info(DEBUGL_FUNCTIONS, 0, "set_host_flap()\n");
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if(hst == NULL)
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return;
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log_debug_info(DEBUGL_FLAPPING, 1, "Host '%s' started flapping!\n", hst->name);
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/* log a notice - this one is parsed by the history CGI */
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logit(NSLOG_RUNTIME_WARNING, FALSE, "HOST FLAPPING ALERT: %s;STARTED; Host appears to have started flapping (%2.1f%% change > %2.1f%% threshold)\n", hst->name, percent_change, high_threshold);
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/* add a non-persistent comment to the host */
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asprintf(&temp_buffer, "Notifications for this host are being suppressed because it was detected as having been flapping between different states (%2.1f%% change > %2.1f%% threshold). When the host state stabilizes and the flapping stops, notifications will be re-enabled.", percent_change, high_threshold);
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add_new_host_comment(FLAPPING_COMMENT, hst->name, time(NULL), "(Nagios Process)", temp_buffer, 0, COMMENTSOURCE_INTERNAL, FALSE, (time_t)0, &(hst->flapping_comment_id));
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my_free(temp_buffer);
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/* set the flapping indicator */
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hst->is_flapping = TRUE;
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#ifdef USE_EVENT_BROKER
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/* send data to event broker */
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broker_flapping_data(NEBTYPE_FLAPPING_START, NEBFLAG_NONE, NEBATTR_NONE, HOST_FLAPPING, hst, percent_change, high_threshold, low_threshold, NULL);
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#endif
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/* see if we should check to send a recovery notification out when flapping stops */
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if(hst->current_state != HOST_UP && hst->current_notification_number > 0)
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hst->check_flapping_recovery_notification = TRUE;
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else
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hst->check_flapping_recovery_notification = FALSE;
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/* send a notification */
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if(allow_flapstart_notification == TRUE)
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host_notification(hst, NOTIFICATION_FLAPPINGSTART, NULL, NULL, NOTIFICATION_OPTION_NONE);
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return;
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}
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/* handles a host that has stopped flapping */
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void clear_host_flap(host *hst, double percent_change, double high_threshold, double low_threshold, int is_disabled) {
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log_debug_info(DEBUGL_FUNCTIONS, 0, "clear_host_flap()\n");
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if(hst == NULL)
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return;
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if (is_disabled == 0) {
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log_debug_info(DEBUGL_FLAPPING, 1, "Host '%s' stopped flapping.\n", hst->name);
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/* log a notice - this one is parsed by the history CGI */
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logit(NSLOG_INFO_MESSAGE, FALSE, "HOST FLAPPING ALERT: %s;STOPPED; Host appears to have stopped flapping (%2.1f%% change < %2.1f%% threshold)\n", hst->name, percent_change, low_threshold);
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} else {
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log_debug_info(DEBUGL_FLAPPING, 1, "Disabled flap detection for host '%s'.\n", hst->name);
|
|
/* log a notice - this one is parsed by the history CGI */
|
|
logit(NSLOG_INFO_MESSAGE, FALSE, "HOST FLAPPING ALERT: %s;STOPPED; Disabled flap detection\n", hst->name);
|
|
}
|
|
|
|
/* delete the comment we added earlier */
|
|
if(hst->flapping_comment_id != 0)
|
|
delete_host_comment(hst->flapping_comment_id);
|
|
hst->flapping_comment_id = 0;
|
|
|
|
/* clear the flapping indicator */
|
|
hst->is_flapping = FALSE;
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_flapping_data(NEBTYPE_FLAPPING_STOP, NEBFLAG_NONE, NEBATTR_FLAPPING_STOP_NORMAL, HOST_FLAPPING, hst, percent_change, high_threshold, low_threshold, NULL);
|
|
#endif
|
|
|
|
if (is_disabled == 0) {
|
|
/* send a notification */
|
|
host_notification(hst, NOTIFICATION_FLAPPINGSTOP, NULL, NULL, NOTIFICATION_OPTION_NONE);
|
|
|
|
/* should we send a recovery notification? */
|
|
if(hst->check_flapping_recovery_notification == TRUE && hst->current_state == HOST_UP)
|
|
host_notification(hst, NOTIFICATION_NORMAL, NULL, NULL, NOTIFICATION_OPTION_NONE);
|
|
}
|
|
|
|
/* clear the recovery notification flag */
|
|
hst->check_flapping_recovery_notification = FALSE;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/******************************************************************/
|
|
/***************** FLAP DETECTION STATUS FUNCTIONS ****************/
|
|
/******************************************************************/
|
|
|
|
/* enables flap detection on a program wide basis */
|
|
void enable_flap_detection_routines(void) {
|
|
unsigned int i;
|
|
unsigned long attr = MODATTR_FLAP_DETECTION_ENABLED;
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "enable_flap_detection_routines()\n");
|
|
|
|
/* bail out if we're already set */
|
|
if(enable_flap_detection == TRUE)
|
|
return;
|
|
|
|
/* set the attribute modified flag */
|
|
modified_host_process_attributes |= attr;
|
|
modified_service_process_attributes |= attr;
|
|
|
|
/* set flap detection flag */
|
|
enable_flap_detection = TRUE;
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_adaptive_program_data(NEBTYPE_ADAPTIVEPROGRAM_UPDATE, NEBFLAG_NONE, NEBATTR_NONE, CMD_NONE, attr, modified_host_process_attributes, attr, modified_service_process_attributes, NULL);
|
|
#endif
|
|
|
|
/* update program status */
|
|
update_program_status(FALSE);
|
|
|
|
/* check for flapping */
|
|
for(i = 0; i < num_objects.hosts; i++)
|
|
check_for_host_flapping(host_ary[i], FALSE, FALSE, TRUE);
|
|
for(i = 0; i < num_objects.services; i++)
|
|
check_for_service_flapping(service_ary[i], FALSE, TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* disables flap detection on a program wide basis */
|
|
void disable_flap_detection_routines(void) {
|
|
unsigned int i;
|
|
unsigned long attr = MODATTR_FLAP_DETECTION_ENABLED;
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "disable_flap_detection_routines()\n");
|
|
|
|
/* bail out if we're already set */
|
|
if(enable_flap_detection == FALSE)
|
|
return;
|
|
|
|
/* set the attribute modified flag */
|
|
modified_host_process_attributes |= attr;
|
|
modified_service_process_attributes |= attr;
|
|
|
|
/* set flap detection flag */
|
|
enable_flap_detection = FALSE;
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_adaptive_program_data(NEBTYPE_ADAPTIVEPROGRAM_UPDATE, NEBFLAG_NONE, NEBATTR_NONE, CMD_NONE, attr, modified_host_process_attributes, attr, modified_service_process_attributes, NULL);
|
|
#endif
|
|
|
|
/* update program status */
|
|
update_program_status(FALSE);
|
|
|
|
/* handle the details... */
|
|
for(i = 0; i < num_objects.hosts; i++)
|
|
handle_host_flap_detection_disabled(host_ary[i]);
|
|
for(i = 0; i < num_objects.services; i++)
|
|
handle_service_flap_detection_disabled(service_ary[i]);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/* enables flap detection for a specific host */
|
|
void enable_host_flap_detection(host *hst) {
|
|
unsigned long attr = MODATTR_FLAP_DETECTION_ENABLED;
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "enable_host_flap_detection()\n");
|
|
|
|
if(hst == NULL)
|
|
return;
|
|
|
|
log_debug_info(DEBUGL_FLAPPING, 1, "Enabling flap detection for host '%s'.\n", hst->name);
|
|
|
|
/* nothing to do... */
|
|
if(hst->flap_detection_enabled == TRUE)
|
|
return;
|
|
|
|
/* set the attribute modified flag */
|
|
hst->modified_attributes |= attr;
|
|
|
|
/* set the flap detection enabled flag */
|
|
hst->flap_detection_enabled = TRUE;
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_adaptive_host_data(NEBTYPE_ADAPTIVEHOST_UPDATE, NEBFLAG_NONE, NEBATTR_NONE, hst, CMD_NONE, attr, hst->modified_attributes, NULL);
|
|
#endif
|
|
|
|
/* check for flapping */
|
|
check_for_host_flapping(hst, FALSE, FALSE, TRUE);
|
|
|
|
/* update host status */
|
|
update_host_status(hst, FALSE);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/* disables flap detection for a specific host */
|
|
void disable_host_flap_detection(host *hst) {
|
|
unsigned long attr = MODATTR_FLAP_DETECTION_ENABLED;
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "disable_host_flap_detection()\n");
|
|
|
|
if(hst == NULL)
|
|
return;
|
|
|
|
log_debug_info(DEBUGL_FLAPPING, 1, "Disabling flap detection for host '%s'.\n", hst->name);
|
|
|
|
/* nothing to do... */
|
|
if(hst->flap_detection_enabled == FALSE)
|
|
return;
|
|
|
|
/* set the attribute modified flag */
|
|
hst->modified_attributes |= attr;
|
|
|
|
/* set the flap detection enabled flag */
|
|
hst->flap_detection_enabled = FALSE;
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_adaptive_host_data(NEBTYPE_ADAPTIVEHOST_UPDATE, NEBFLAG_NONE, NEBATTR_NONE, hst, CMD_NONE, attr, hst->modified_attributes, NULL);
|
|
#endif
|
|
|
|
/* handle the details... */
|
|
handle_host_flap_detection_disabled(hst);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* handles the details for a host when flap detection is disabled (globally or per-host) */
|
|
void handle_host_flap_detection_disabled(host *hst) {
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "handle_host_flap_detection_disabled()\n");
|
|
|
|
if(hst == NULL)
|
|
return;
|
|
|
|
/* if the host was flapping, remove the flapping indicator */
|
|
if(hst->is_flapping == TRUE) {
|
|
|
|
hst->is_flapping = FALSE;
|
|
|
|
/* delete the original comment we added earlier */
|
|
if(hst->flapping_comment_id != 0)
|
|
delete_host_comment(hst->flapping_comment_id);
|
|
hst->flapping_comment_id = 0;
|
|
|
|
/* log a notice - this one is parsed by the history CGI */
|
|
logit(NSLOG_INFO_MESSAGE, FALSE, "HOST FLAPPING ALERT: %s;DISABLED; Flap detection has been disabled\n", hst->name);
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_flapping_data(NEBTYPE_FLAPPING_STOP, NEBFLAG_NONE, NEBATTR_FLAPPING_STOP_DISABLED, HOST_FLAPPING, hst, hst->percent_state_change, 0.0, 0.0, NULL);
|
|
#endif
|
|
|
|
/* send a notification */
|
|
host_notification(hst, NOTIFICATION_FLAPPINGDISABLED, NULL, NULL, NOTIFICATION_OPTION_NONE);
|
|
|
|
/* should we send a recovery notification? */
|
|
if(hst->check_flapping_recovery_notification == TRUE && hst->current_state == HOST_UP)
|
|
host_notification(hst, NOTIFICATION_NORMAL, NULL, NULL, NOTIFICATION_OPTION_NONE);
|
|
|
|
/* clear the recovery notification flag */
|
|
hst->check_flapping_recovery_notification = FALSE;
|
|
}
|
|
|
|
/* update host status */
|
|
update_host_status(hst, FALSE);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* enables flap detection for a specific service */
|
|
void enable_service_flap_detection(service *svc) {
|
|
unsigned long attr = MODATTR_FLAP_DETECTION_ENABLED;
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "enable_service_flap_detection()\n");
|
|
|
|
if(svc == NULL)
|
|
return;
|
|
|
|
log_debug_info(DEBUGL_FLAPPING, 1, "Enabling flap detection for service '%s' on host '%s'.\n", svc->description, svc->host_name);
|
|
|
|
/* nothing to do... */
|
|
if(svc->flap_detection_enabled == TRUE)
|
|
return;
|
|
|
|
/* set the attribute modified flag */
|
|
svc->modified_attributes |= attr;
|
|
|
|
/* set the flap detection enabled flag */
|
|
svc->flap_detection_enabled = TRUE;
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_adaptive_service_data(NEBTYPE_ADAPTIVESERVICE_UPDATE, NEBFLAG_NONE, NEBATTR_NONE, svc, CMD_NONE, attr, svc->modified_attributes, NULL);
|
|
#endif
|
|
|
|
/* check for flapping */
|
|
check_for_service_flapping(svc, FALSE, TRUE);
|
|
|
|
/* update service status */
|
|
update_service_status(svc, FALSE);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/* disables flap detection for a specific service */
|
|
void disable_service_flap_detection(service *svc) {
|
|
unsigned long attr = MODATTR_FLAP_DETECTION_ENABLED;
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "disable_service_flap_detection()\n");
|
|
|
|
if(svc == NULL)
|
|
return;
|
|
|
|
log_debug_info(DEBUGL_FLAPPING, 1, "Disabling flap detection for service '%s' on host '%s'.\n", svc->description, svc->host_name);
|
|
|
|
/* nothing to do... */
|
|
if(svc->flap_detection_enabled == FALSE)
|
|
return;
|
|
|
|
/* set the attribute modified flag */
|
|
svc->modified_attributes |= attr;
|
|
|
|
/* set the flap detection enabled flag */
|
|
svc->flap_detection_enabled = FALSE;
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_adaptive_service_data(NEBTYPE_ADAPTIVESERVICE_UPDATE, NEBFLAG_NONE, NEBATTR_NONE, svc, CMD_NONE, attr, svc->modified_attributes, NULL);
|
|
#endif
|
|
|
|
/* handle the details... */
|
|
handle_service_flap_detection_disabled(svc);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* handles the details for a service when flap detection is disabled (globally or per-service) */
|
|
void handle_service_flap_detection_disabled(service *svc) {
|
|
|
|
log_debug_info(DEBUGL_FUNCTIONS, 0, "handle_service_flap_detection_disabled()\n");
|
|
|
|
if(svc == NULL)
|
|
return;
|
|
|
|
/* if the service was flapping, remove the flapping indicator */
|
|
if(svc->is_flapping == TRUE) {
|
|
|
|
svc->is_flapping = FALSE;
|
|
|
|
/* delete the original comment we added earlier */
|
|
if(svc->flapping_comment_id != 0)
|
|
delete_service_comment(svc->flapping_comment_id);
|
|
svc->flapping_comment_id = 0;
|
|
|
|
/* log a notice - this one is parsed by the history CGI */
|
|
logit(NSLOG_INFO_MESSAGE, FALSE, "SERVICE FLAPPING ALERT: %s;%s;DISABLED; Flap detection has been disabled\n", svc->host_name, svc->description);
|
|
|
|
#ifdef USE_EVENT_BROKER
|
|
/* send data to event broker */
|
|
broker_flapping_data(NEBTYPE_FLAPPING_STOP, NEBFLAG_NONE, NEBATTR_FLAPPING_STOP_DISABLED, SERVICE_FLAPPING, svc, svc->percent_state_change, 0.0, 0.0, NULL);
|
|
#endif
|
|
|
|
/* send a notification */
|
|
service_notification(svc, NOTIFICATION_FLAPPINGDISABLED, NULL, NULL, NOTIFICATION_OPTION_NONE);
|
|
|
|
/* should we send a recovery notification? */
|
|
if(svc->check_flapping_recovery_notification == TRUE && svc->current_state == STATE_OK)
|
|
service_notification(svc, NOTIFICATION_NORMAL, NULL, NULL, NOTIFICATION_OPTION_NONE);
|
|
|
|
/* clear the recovery notification flag */
|
|
svc->check_flapping_recovery_notification = FALSE;
|
|
}
|
|
|
|
/* update service status */
|
|
update_service_status(svc, FALSE);
|
|
|
|
return;
|
|
}
|