| Check | Description | |
|---|---|---|
| VMAX_COLLECTOR: | Collects the Data from the VMAX. | |
| CHECK-VMAX-DEVICES: | Checks configuration status of devices. | |
| CHECK-VMAX-DEVICES-SPACE: | Checks Space of VMAX Devices. | |
| CHECK DIRECTORS INFO: | Checks VMAX Director status and speed. | |
| CHECK DISKS: | Checks status of the disks. | |
| CHECK ENVDATA: | Checks the status of the VMAX power supplies and fans. | |
| CHECK POOL DEVIATION: | Checks the VMAX Pools Deviation. | |
| CHECK POOL FREE: | Checks the VMAX Pools Freespace. | |
| CHECK POOL STATE: | Checks the pool state. | |
| CHECK DIRECTORS PORT FLAGS: | Checks the flags of the Director ports. | |
| CHECK SRDF: | Checks the VMAX SRDF Devices. | |
| PERF DIRECTOR: | Checks Director Performance. |
VMAX Systems
- 5875
- 5876
Platforms
- EL 6/7
- Supported OP5 release
Software
- nagios version 3.5.1 and version 4.0.8 or newer
- Perl 5.8.9
Perl modules
- Storable
- Time::HiRes
- XML::Simple
- XML::LibXML
- XML::XPath
- XML::XPath::XMLParser
- XML::Twig
- IPC::Run
- Posix
- Carp
- Version
- Nagios::P lugin
- Readonly
- List::MoreUtils
- FindBin
- Data::D umper
- Hash::Util
- utf8
- File::Basename
- (Smart::Comments, only for debugging)
For Credentials.pm
- Config::IniFiles
- MIME::Base64
Vmax
- SYMCLI (EMC Software) must be installed on the local machine.
Release 1.0.4_1
- requirements.rst
Release 1.0.4
- Documentation Improvements
Release 1.0.1 - 1.0.3
- Documentation improvements
Release 1.0.0
- Initial release
Details about: VMAX_COLLECTOR
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
SID of the VMAX
--symcli_path=STRING
Path to EMCs symcli-executable on the local host. Defaults to /opt/emc/SYMCLI/bin;
-o, --outdir=STRING
Directory where to store the collected data. Defaults to /usr/local/quorum/monitoring/collected-data
--import_file=STRING
Filename for importing explored data. (Demonstration mode.)
--task=STRING
Mandatory name of the task to get data from. Must be one of: Directors Config Fibre aclx-flag disabled,
Disks, Directors Port Speeds, Directors Config Negotiated Speeds, SpareCoverage, Power Supply,
RDF1 Devices Status, Pool State, Ports, Directors Config Fibre aclx-flag enabled, Devices Status,
Directors Config SCSI Flags, Directors Config Fibre Specific Flags, Pools, Pool Free, Devices Space,
RDF2-Devices Status, Perf Director, FAST State, Standby Power Supply, Directors Status, Pool Deviation,
SRDF list
-w, --warning=STRING
Warning threshold in seconds for the total duration. (The total duration is the sum of collect- and
store-duration.)
-c, --critical=STRING
Critical threshold in seconds for the total duration. (See --warning.)
--show_data=STRING
Setting this switch to anything other than 0 prints the already collected data. (Debugging only, no
check.) By setting this switch to a positive integer, the depth of the output can be limited. For
unlimited depth in output set it to '*'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--inject_xml=STRING
Option for debugging only. Can be used to inject xml-data into a store. Requires a filename containing
the XML data. You may want to use --print_data=xml to produce a template for editing.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This script contacts the VMAX system specified with --sid and retrieves all the data needed by the
check_vmax_* scripts. There are other options too, like retrieving data from previously explore
d
System. See the arguments descriptions for details.
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK-VMAX-DEVICES
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
--config, --configuration=STRING
Configuration of devices that should be checked. If omitted all devices are checked.Examples: RDF1,
RDF2, ... Use --print_data to explore possible strings.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK-VMAX-DEVICES-SPACE
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
-e, --emulation=STRING
Emulation to check. Must be one of All, FBA Defaults to All.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
-w, --warning=INTEGER
Warning threshold in percent. Defaults to 70.
-c, --critical=INTEGER
Critical threshold in percent. Defaults to 90.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK DIRECTORS INFO
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
-y, --type=STRING
Type to check. Can be one of All, DISK, FibreChannel, RDF-BI-DIR Defaults to All.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK DISKS
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
-g, --disk_group, --group=STRING
Disk-group to check. If omitted all disk-groups are checked. Use -v to list all disks together with
their disk-groups and speeds.
--speed=STRING
Speed of disks, which should get checked. If omitted all disks independent of their speed are checked.
The speed must match exactly as string. E.g. --speed=15000 will check all disks with a speed-attribu
te
'15000'. Use -v to list all disks together with their disk-groups and speeds.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK ENVDATA
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
-y, --type=STRING
Type to check. Must be one of DIRPS, MIBE, PLC, PS, MM, LCC, DIR, FAN, IOMC Defaults to DIRPS.
--location, --loc=STRING
Type to check. Must be one of DriveBay, SystemBay, EnclosureSlot, MatrixInterfaceBoardEnclosure
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK POOL DEVIATION
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
-w, --warning=INTEGER
Deviation warning threshold in percentage-points. Defaults to 5.
-c, --critical=INTEGER
Deviation critical threshold in percentage-points. Defaults to 10.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK POOL FREE
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
-p, --pool, --pool_name=STRING
Which Defines pool to check. If omitted each pool is checked. Can be either a pool-name or one of the
key-words 'each' (default) or 'all'. If set to 'each', each pools free-tracks is compared against the
"I'm not new. If set to 'all', the sum of all pools free-tracks is compared against the thresholds.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-m, --metric=STRING
Metric, possible metrics are: relative, absolute
Default: relative
-w, --warning=STRING
Warning threshold - default depends on metric: relative(20), absolute(250)
Variables for dynamic thresholds supported and depending on metric:
relative(none), absolute('VMAX_TOTAL''FREE')
-c, --critical=STRING
Critical threshold - default depends on metric: relative(10), absolute(100)
--unit, --uom=STRING
Unit for thresholds. - default depends on metric: relative(%), absolute(B)
--prefix, --multiplicator, --factor=STRING
SI-prefix for threshold-unit - default depends on metric: relative(no
default), absolute(Gi)
Allowed prefixes are: E, Egg, G, Gi, M, Mi, P, Pi, T, Ti, k, ki, non
e
Further information about SI-prefixe
s
Binary http://physics.nist.gov/cuu/Units/binary.htm
l
Standard http://physics.nist.gov/cuu/Units/prefixes.htm
l
The prefix 'none' can be used to overide a default-set prefix an
d
results in a factor of
1
--perf_data_prefix, --perf_data_multiplicator, --perf_data_factor=STRIN
G
SI-prefix for perfdata-unit. Default depends on metric: relative(n
o
default), absolute(no default
)
Allowed prefixes are: E, Egg, G, Gi, M, Mi, P, Pi, T, Ti, k, ki, no
ne
Lake so --prefi
x
WARNING: The perf_data_prefix will change the value, min and max bu
t
*not* the warning and critical thresholds in the perf-data!So using
this option will result in partially inconsistent perf-data.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK POOL STATE
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Task-name, required. --task=* returns a list of available tasks.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK DIRECTORS PORT-FLAGS
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Task-name, required. --task=* returns a list of available tasks.
--explore=STRING
Explore mode. Set to * to get a list of available tasks or <task name=""> to get details about a
specific task.</task>
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--port_id=STRING
Limit the check to a specific port. Syntax is 'Director-ID:Port-Number', eg. 'FA-8G:0' If omitted all
ports on all directors are checked.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: CHECK SRDF
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Task-name, required. --task=* returns a list of available tasks.
-a, --attribute, --attr=STRING
Type to check. Can be one of pair_state, mode Defaults to pair_state.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.
Details about: PERF DIRECTOR
Parameter
-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. Lake http://nagiosplugins.org/extra-opt
s
for usage and examples.
-H, --host=STRING
IP-address or hostname of the Management Host.
-o, -d, --data_dir=STRING
Directory where the collected data is stored. Defaults to /usr/local/quorum/monitoring/collected-data
--task=STRING
Taskname, required. --task=* returns a list of available tasks.
-y, --type=STRING
Type to check. Can be one of Dir_Request_Totals, Dir_Request_Remote, Dir_Request_Backend,
Dir_Request_Frontend, all. Defaults to Dir_Request_Totals.
--explore=STRING
Explore mode ....
--print_data=STRING
Print tasks data to stdout. Possible values are 'perl' and 'xml'.
--output=STRING
Format of the output. Possible values are 'nagios' and 'cmd'.
--max_age=INTEGER
Maximum age of a data-store in minutes. Defaults to 15. If stores modification-date is older, the check
RETURNS UNKNOWN. To completely disable the age-checking of stores set this argument to 0.
-m, --metric=STRING
Metric, possible metrics are: rw_cache_hit_pct, r_per_second,
io_per_second, rw_per_second, w_per_second
Default: rw_cache_hit_pct
-w, --warning=STRING
Warning threshold - default depends on metric: rw_cache_hit_pct(20),
r_per_second(25000), io_per_second (75000), rw_per_second(50000)
,
w_per_second(25000
)
Variables for dynamic thresholds supported and depending on metric
:
rw_cache_hit_pct(none), r_per_second(none), io_per_second(none)
,
rw_per_second(none), w_per_second(none
)
-c, --critical=STRIN
G
Critical threshold - default depends on metric: rw_cache_hit_pct(10)
,
r_per_second(40000), io_per_second(100000), rw_per_second(80000)
,
w_per_second(40000
)
--unit, --uom=STRIN
G
Unit for thresholds. - default depends on metric: rw_cache_hit_pct(%),
r_per_second(/s), io_per_second(/s), rw_per_second(/s), w_per_second(/s)
--prefix, --multiplicator, --factor=STRING
SI-prefix for threshold-unit - default depends on metric:
rw_cache_hit_pct(no default), r_per_second(no default), io_per_second(no
default), rw_per_second(no default), w_per_second(no default)
Allowed prefixes are: E, Egg, G, Gi, M, Mi, P, Pi, T, Ti, k, ki, non
e
Further information about SI-prefixe
s
Binary http://physics.nist.gov/cuu/Units/binary.htm
l
Standard http://physics.nist.gov/cuu/Units/prefixes.htm
l
The prefix 'none' can be used to overide a default-set prefix an
d
results in a factor of
1
--perf_data_prefix, --perf_data_multiplicator, --perf_data_factor=STRIN
G
SI-prefix for perfdata-unit. Default depends on metric: rw_cache_hit_pct(no
)
default), r_per_second(no default), io_per_second(no default)
,
rw_per_second(no default), w_per_second(no default
)
Allowed prefixes are: E, Egg, G, Gi, M, Mi, P, Pi, T, Ti, k, ki, no
ne
Lake so --prefi
x
WARNING: The perf_data_prefix will change the value, min and max bu
t
*not* the warning and critical thresholds in the perf-data!So using
this option will result in partially inconsistent perf-data.
-t, --timeout=INTEGER
Seconds before plugin times out (default: 15)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
This check uses one or several tasks to do it's job. More information about each task can be retrievd
with the switch '--explore=<Taskname>'.</Taskname> To exlore wich tasks are available for this check:
'--task=*' .
Function
Active Check. Can be parameterized via Nagios config.