1 # Copyright (C) 2002 Stanislav Sinyagin
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 2 of the License, or
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
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15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
17 # $Id: wd.monitor-escalation.pod,v 1.1 2010-12-27 00:04:36 ivan Exp $
18 # Stanislav Sinyagin <ssinyagin@yahoo.com>
22 =head1 RRFW Working Draft: Monitor escalation levels
24 Status: pending implementation.
25 Date: Nov 5 2003. Last revised: Nov 10 2003
29 The initial idea comes from Francois Mikus in Cricket development team.
30 His proposal was to raise the alarm only after several true consecutive
33 The idea has developed into the concept of escalation levels.
38 Current implementation supports four types of monitor events: C<set>,
39 C<repeat>, C<clear>, and C<forget>. New event type will be C<escalate(X)>.
40 C<X> designates a symbolic name for a certain escalation level. Each level
41 is associated with the escalation time interval.
43 Given C<Te> as the escalation interval, C<Ta> as the monitor condition age,
44 and C<P> as period, the escalation event will occur simultaneously with
45 one of C<repeat> events, when the following condition is true:
49 New event types C<clear(X)> and C<forget(X)> will occur at the same
50 time as C<clear> and C<forget> respectively,
51 for each escalated level.
54 =head2 Monitor parameters
56 New parameter will be introduced: C<escalation>. Value will
57 be a comma-separated list of C<name=interval> parts, where C<name>
58 designates the escalation level, and C<interval> specifies the escalation
63 <monitor name="rate-limits">
64 <param name="escalation value="Medium=1800, High=7200, Critical=14400" />
68 Another example would be Cisco TAC style priorities: P3, P2, P1.
71 =head2 Action parameters
73 C<launch-when> parameter will be valid not for C<exec> actions only, but also
74 for C<tset> actions. New valid values will be C<escalate(X)>, C<clear(X)>,
77 XML configuration validator will not verify if escalation levels in
78 action definition match those in datasource configuration.
80 New optional action parameter: C<allowed-time>. Contains an RPN expression
81 which must be true at the time when the action is allowed to execute.
82 Two new RPN functions may be used here: C<TOD> and C<DOW>.
84 C<TOD> returns the current time of day as integer: C<HH*100+MM>. For example,
85 830 means 8:30 AM, and 1945 means 7:45 PM.
87 C<DOW> returns the current day of the week as integer between and including
88 0 and 6, with 0 corresponding to Sunday, 1 to Monday, and 6 to Saturday.
90 In this example, the action is allowed between 8 AM and 6 PM from Monday
93 <param name="allowed-time">
94 TOD,800,GE, TOD,1800,LE, AND,
100 =head2 Implementation
102 B<monitor_alarms.db> database format will change: The values will consist
103 of five colon-separated fields. The first four fields will be as earilier,
104 and the fifth one will be a comma-separated list of escalation level names
105 that have already fired.
107 The implementation of this feature is preferred after the planned redesign of
108 the monitor daemon. The new monitor design would support individual
109 schedule for each datasource leaf, analogous to collector schedules.
111 In turn, the monitor daemon redesign is better to do after
112 the collector daemon redesign. Then it would allow to keep similar design
113 and architecture where possible.
117 Copyright (c) 2003 Stanislav Sinyagin E<lt>ssinyagin@yahoo.comE<gt>