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check_memcached IV

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Description:

check that a memcached instance (see http://memcached.org) is accessible, writable, and getting a useful hit-rate.

Current Version

1.3

Last Release Date

2013-09-16

Compatible With

Owner

George Hansper

License

GPL

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Project Files
FileDescription
check_memcached.l

Nagios plugin

check_memcached.php

PNP4Nagios template

Project Notes
check_memcached will give a critical message if a partiular memcached host is inaccessible. It will generate a warning (only) if the hit/miss ratio falls below a given threshold (default 2) It will generate a warning (only) if the number of evictions exceeds a given limit (default 10) Hit/miss and evictions are measured over a 30 minute interval, using a memcached object to store the earlier statistics. Almost ALL other check_memcached plugins just quote the raw stats, which are measured from when the daemon was last started. By distinction, this plugin measures the hit/miss ratio over a well-defined time-interval (by default the last 30 minutes) The thresholds for the hit/miss ratio and eviction-rate may be specified on the command line. The measurement time-interval may also be specified on the command line (this interval is also used for the performance data) This plugin is written in C and also requires: Flex: http://flex.sourceforge.net/ libmemcached: http://libmemcached.org/libMemcached.html v1.3 added rate-based performance statistics for better pnp4nagios integration (-r option)
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