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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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cmstartres(1m)															    cmstartres(1m)

NAME
cmstartres - starts resource monitoring on the local node for an EMS resource that is configured in a Serviceguard package. SYNOPSIS
cmstartres [-v] [-u] -p package_name resource_name DESCRIPTION
cmstartres starts resource monitoring for an EMS resource on the local node. This resource must be configured in the specified pack- age_name. To start a resource monitoring for an EMS resource in the package, a user must either be superuser(UID=0), or have an access policy of FULL_ADMIN allowed in the cluster configuration file. See access policy in cmquerycl(1m) or cmmakepkg(1m). Options cmstartres supports the following options. -v Verbose output will be displayed. -u Wait for the EMS resource to be available before starting resource monitoring. -p package_name The name of the package where the EMS resource is configured in. This is a required parameter. resource_name Name of the EMS resource to start resource monitoring for. This resource must be configured in the specified pack- age_name. This is a required parameter. RETURN VALUE
cmstartres returns the following values: 0 Successful completion. 1 Command failed. EXAMPLES
To start resource monitoring for the EMS resource /net/interfaces/lan/status/lan0 for package pkgA, do the following: cmstartres -u -p pkgA /net/interfaces/lan/status/lan0 AUTHOR
cmstartres was developed by HP. SEE ALSO
cmstopres(1m), cmquerycl(1m), cmmakepkg(1m). Requires Optional Serviceguard Software cmstartres(1m)
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