hostcheck
Name
hostcheck -- Checks to see if hosts are up or down.
Description
Hostcheck is used to determine if hosts on the network are
reachable, that is, able to be pinged. Hostcheck just gives
"up" or "down", for actual ping times see the pingcheck
module. This module can be given IP addresses or hostnames,
which are resolved by hostcheck using DNS.
Configuration
Configuring hostcheck is quite simple. Each desired host
is set with the "checkHost" variable. Any number of hosts
may be given. For example:
config
{
checkHost = 192.168.0.1
checkHost = mycompany.com
checkHost = alpha
}
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Windows users may configure hostcheck though the RSPD
Configuration window. Hosts are added and removed from a
list. See Chapter 2 for more details.
Thresholds
Hostcheck also supports thresholds. Any of the hosts which
were given to check may be used in a threshold. The only
two allowed operators are "==" and "!=", which can be used
to compare against the words "up" or "down". Therefore
"!= down" and "== up" could be used interchangeably, as
coule "== down" and "!= up".
Here are some example thresholds:
# Example thresholds for hostcheck
thresh1.threshold = HostCheck.192.168.0.1 == down
thresh2.threshold = HostCheck.alpha == up
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History Data
The hostcheck module will save boolean values for each host
or IP address it is given. This data, using the RSP History
Viewer or RSP Web tools, can be used to show server availability
over time.