NAME¶
pmdaroomtemp - room temperature performance metrics domain agent (PMDA)
SYNOPSIS¶
$PCP_PMDAS_DIR/roomtemp/pmdaroomtemp [
-d domain] [
-l logfile]
DESCRIPTION¶
pmdaroomtemp is a Performance Metrics Domain Agent (PMDA) which exports
the temperature from one or more sensors built using the DS2480 and DS1280
chipsets and MicroLAN technology from Dallas Semiconductor Corporation.
The
roomtemp PMDA exports metrics that reflect the temperatures from one
or more of these devices, in both degrees Celcius and Fahrenheit. Each metric
has one instance for each temperature sensor device. The external instance
identifiers are the serial numbers (in hex) of the DS1280 chips discovered
when the MicroLAN was probed.
A brief description of the
pmdaroomtemp command line options follows:
- -d
- It is absolutely crucial that the performance metrics domain number
specified here is unique and consistent. That is, domain should be
different for every PMDA on the one host, and the same domain
number should be used for the same PMDA on all hosts.
- -l
- Location of the log file. By default, a log file named roomtemp.log
is written in the current directory of pmcd(1) when
pmdaroomtemp is started, i.e. $PCP_LOG_DIR/pmcd. If the log
file cannot be created or is not writable, output is written to the
standard error instead.
INSTALLATION¶
If you want access to the names, help text and values for the roomtemp
performance metrics, do the following as root:
# cd $PCP_PMDAS_DIR/roomtemp
# ./Install
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/roomtemp
# ./Remove
pmdaroomtemp is launched by
pmcd(1) and should never be executed
directly. The Install and Remove scripts notify
pmcd(1) when the agent
is installed or removed.
FILES¶
- $PCP_PMCDCONF_PATH
- command line options used to launch pmdaroomtemp
- $PCP_PMDAS_DIR/roomtemp/help
- default help text file for the roomtemp metrics
- $PCP_PMDAS_DIR/roomtemp/Install
- installation script for the pmdaroomtemp agent
- $PCP_PMDAS_DIR/roomtemp/Remove
- undo installation script for the pmdaroomtemp agent
- $PCP_LOG_DIR/pmcd/roomtemp.log
- default log file for error messages and other information from
pmdaroomtemp
PCP ENVIRONMENT¶
Environment variables with the prefix
PCP_ are used to parameterize the
file and directory names used by PCP. On each installation, the file
/etc/pcp.conf contains the local values for these variables. The
$PCP_CONF variable may be used to specify an alternative configuration
file, as described in
pcp.conf(5).
SEE ALSO¶
PCPIntro(1),
pmcd(1),
pcp.conf(5) and
pcp.env(5).