apache-top provides real-time display of the active processes from a remote apache server. It shows: the active apache processes with the associated PID, the status, the active seconds, the CPU usage, the associated VirtualHost, the accessing IP and the request (POST or GET, the file being accessed, and the used protocol); the server uptime and the time it was last restarted; CPU usage; requests per second, Kb per second, and the average Kb per request; the number of active and inactive processes; and a graph with the inactive and active processes and their status.
check_aaccli is a plugin for Nagios which checks the hardware health of Adaptec SCSI RAID controllers. To accomplish this, you must have installed the aaccli binary (from the aacapps package). The plugin checks the error log of single disks (with S.M.A.R.T.) and the health of mirror containers.
check_hpasm is a plugin for Nagios which checks the hardware health of Hewlett-Packard Proliant servers. To accomplish this, you must have installed the hpasm package. The plugin checks the health of processors, power supplies, memory modules, fans, CPU- and board-temperatures, and alerts you if one of these components is faulty or operates outside its normal parameters.
check_logfiles is a plugin for Nagios which checks logfiles for defined patterns. It is capable of detecting logfile rotation. If you tell it how the rotated archives look, it will also examine these files. Unlike check_logfiles, traditional logfile plugins were not aware of the gap which could occur, so under some circumstances they ignored what had happened between their checks. A configuration file is used to specify where to search, what to search, and what to do if a matching line is found.
check_multi is kind of a Nagios wrapper plugin which takes advantage of the Nagios 3.x capability to display multiple lines of plugin output. It calls multiple child plugins and displays their output in the long_plugin_output. A summary is given in the standard plugin output. The child return code with the highest severity becomes the parent (check_multi) plugin return code. The configuration is very simple: a NRPE-stylish config file contains a tag for each child plugin and then the check command line.
check_mysql_health is a plugin for the Shinken (Nagios) software that allows you to monitor a MySQL database. Among the list of metrics are time to login, index usage, bufferpool hit rate, query cache hit rate, slow queries, temp tables on disk, table cache hit rate, connected threads, and many more. Requirements are either a DBD::mysql Perl module or a MySQL client package.
check_openmanage is a plugin for Nagios that checks the hardware health of Dell servers running OpenManage Server Administrator (OMSA). The plugin can be used remotely with SNMP or locally with NRPE, check_by_ssh, or similar. It checks the health of the storage subsystem, power supplies, memory modules, temperature probes, etc., and gives an alert if any of the components are faulty or operate outside normal parameters.
check_oracle_health is a plugin for the Shinken (Nagios) monitoring software that allows you to monitor various metrics of an Oracle database. It includes connection time, SGA data buffer hit ratio, SGA library cache hit ratio, SGA dictionary cache hit ratio, SGA shared pool free, PGA in memory sort ratio, tablespace usage, tablespace fragmentation, tablespace I/O balance, invalid objects, and many more.