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2739aac076
[AlertsK] Implements alert consts builder [AlertsK] alert_threshold_cross.lua [AlertsK] too_many_drops.lua [AlertsK] alert_test_failed.lua [AlertsK] alert_flows_flood.lua alert_tcp_syn_flood.lua lert_tcp_syn_scan.lua [AlertsK] alert_snmp_topology_changed.lua [AlertsK] snmp_device_reset.lua [AlertsK] alert_slow_periodic_activity.lua [AlertsK] alert_port_status_change.lua [AlertsK] alert_port_status_change.lua [AlertsK] alert_port_load_threshold_exceeded.lua [AlertsK] alert_port_errors.lua [AlertsK] alert_port_duplexstatus_change.lua [AlertsK] alert_periodic_activity_not_executed.lua [AlertsK] alert_misbehaving_flows_ratio.lua [AlertsK] alert_influxdb_error.lua [AlertsK] alert_influxdb_dropped_points.lua [AlertsK] alert_dropped_alerts.lua [AlertsK] alert_am_threshold_cross.lua [AlertsK] alert_broadcast_domain_too_large.lua [AlertsK] alert_device_connection.lua [AlertsK] alert_device_connection.lua [AlertsK] alert_host_pool_connection.lua alert_host_pool_disconnection.lua [AlertsK] alert_ghost_network.lua [AlertsK] alert_ip_outsite_dhcp_range.lua [AlertsK] alert_list_download_failed.lua [AlertsK] alert_login_failed.lua [AlertsK] alert_mac_ip_association_change.lua [AlertsK] alert_slow_purge.lua [AlertsK] alert_request_reply_ratio.lua [AlertsK] alert_quota_exceeded.lua [AlertsK] alert_process_notification.lua [AlertsK] alert_nfq_flushed.lua [AlertsK] alert_misconfigured_app.lua alert_new_device.lua [AlertsK] alert_influxdb_export_failure.lua [AlertsK] alert_unresponsive_device.lua [AlertsK] alert_user_activity.lua [AlertsK] alert_user_script_calls_drops.lua [AlertsK] minor fix
78 lines
2.1 KiB
Lua
78 lines
2.1 KiB
Lua
--
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-- (C) 2019-20 - ntop.org
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--
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local alerts_api = require("alerts_api")
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local alert_consts = require("alert_consts")
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local user_scripts = require("user_scripts")
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-- #################################################################
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local function check_interface_idle(params)
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local threshold = tonumber(params.user_script_config.threshold)
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local engage = false
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local max_idle = 0
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local max_idle_perc = 0
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local hash_tables_stats = interface.getHashTablesStats()
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for ht_name, ht_stats in pairsByKeys(hash_tables_stats, asc) do
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local idle = ht_stats["hash_entry_states"]["hash_entry_state_idle"] or "0"
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local active = ht_stats["hash_entry_states"]["hash_entry_state_active"] or "0"
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local idle_perc = math.min(idle * 100.0 / (idle + active + 1), 100)
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if (idle + active) > 1000 and idle_perc > threshold then
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if idle_perc > max_idle_perc then
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max_idle = idle
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max_idle_perc = idle_perc
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end
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end
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end
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local idle_type = alert_consts.alert_types.alert_slow_purge.builder(
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alert_consts.alert_severities.warning,
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alert_consts.alerts_granularities.min,
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max_idle,
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max_idle_perc,
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threshold
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)
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if max_idle_perc > threshold then
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alerts_api.trigger(params.alert_entity, idle_type, nil, params.cur_alerts)
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else
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alerts_api.release(params.alert_entity, idle_type, nil, params.cur_alerts)
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end
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end
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-- #################################################################
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local script = {
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-- Script category
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category = user_scripts.script_categories.Internals,
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default_enabled = true,
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default_value = {
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-- "> 50%"
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operator = "gt",
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threshold = 50,
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},
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-- This script is only for alerts generation
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is_alert = true,
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hooks = {
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min = check_interface_idle,
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},
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gui = {
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i18n_title = "alerts_thresholds_config.alert_slow_purge_threshold",
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i18n_description = "alerts_thresholds_config.alert_slow_purge_threshold_descr",
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i18n_field_unit = user_scripts.field_units.percentage,
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input_builder = "threshold_cross",
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field_max = 99,
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field_min = 1,
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field_operator = "gt";
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}
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}
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-- #################################################################
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return script
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