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Special Forums UNIX and Linux Applications Infrastructure Monitoring Event processing & machine learning in monitoring system Post 302821333 by DGPickett on Friday 14th of June 2013 11:44:01 AM
Old 06-14-2013
There is some of this sort of event predition in network protocols, to detect defective or slow paths to avoid, but servers are just supposed to run, not fail, predictable or not. The two flavors of handling this are parallel redundant concurrent load division where a dead server is detected and not sent any more load until it can respond to periodic tests. Recovery from services sent to a dying server is mostly left to client retry, but some systems of transactional middleware do requeue services that do not run to final commit, so they are run on alternative servers. Of course, query services are easier to handle than churn, where you need to rollback all when there is failure, before you requeue. Some systems do not use transactions, but structure churn so it can be applied any number of times and not have duplicate side effects (history filtering or believe the last of that seq. #).
 

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cf-monitord(8)						      System Manager's Manual						    cf-monitord(8)

NAME
cf-monitord - cfengine's monitoring agent SYNOPSIS
: cf-monitord [options] DESCRIPTION
: The monitoring agent is a machine-learning, sampling daemon which learns the normal state of the current host and classifies new observa- tions in terms of the patterns formed by previous ones. The data are made available to and read by cf-agent for classification of responses to anomalous states. cfengine is a self-healing configuration and change management based system. You can think of cfengine as a very high level language, much higher level than Perl or shell. Asingle statement is called a promise, and compliance can result in many hundreds of filesbeing created, or the permissions of many hundreds offiles being set. The idea of cfengine is to create a one or more sets of configu- ration files which willclassify and describe the setup of every host in a network. COMMAND LINE OPTIONS
: --help, -h Print the help message --debug, -d Set debugging level 0,1,2,3 --verbose, -v Output verbose information about the behaviour of the agent --dry-run, -n All talk and no action mode - make no changes, only inform of promises not kept --version, -V Output the version of the software --no-lock, -K Ignore system lock --file, -f Specify an alternative input file than the default --inform, -I Print basic information about changes made to the system, i.e. promises repaired --diagnostic, -x Activate internal diagnostics (developers only) --no-fork, -F Run process in foreground, not as a daemon --histograms, -H Ignored for backward compatibility --tcpdump, -T Interface with tcpdump if available to collect data about network AUTHOR
Mark Burgess and CFEngine AS INFORMATION
Bug reports: http://bug.cfengine.com, .PP Community help: http://forum.cfengine.com Community info: http://www.cfengine.com/pages/community Support services: http://www.cfengine.com This software is Copyright (C) 2008-2013 CFEngine AS. Maintenance Commands cf-monitord(8)
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