агент домена тривиальных показателей производительности (PMDA) (trivial performance metrics domain agent (PMDA))
Имя (Name)
pmdatrivial - trivial performance metrics domain agent (PMDA)
Синопсис (Synopsis)
$PCP_PMDAS_DIR/trivial/pmdatrivial [-d domain] [-l logfile] [-U
username]
Описание (Description)
pmdatrivial is the simplest possible Performance Metrics Domain
Agent (PMDA) which exports a single performance metric, the time
in seconds since the 1st of January, 1970.
The trivial PMDA is shipped as source code and is designed to be
an aid for PMDA developers.
A brief description of the pmdatrivial 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
trivial.log is written in the current directory of pmcd(1)
when pmdatrivial 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.
-U User account under which to run the agent. The default is
the unprivileged "pcp" account in current versions of PCP,
but in older versions the superuser account ("root") was
used by default.
Установка (Installation)
If you want access to the names, help text and values for the
trivial performance metrics, do the following as root:
# cd $PCP_PMDAS_DIR/trivial
# ./Install
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/trivial
# ./Remove
pmdatrivial 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.
Файлы (Files)
$PCP_PMCDCONF_PATH
command line options used to launch pmdatrivial
$PCP_PMDAS_DIR/trivial/help
default help text file for the trivial metrics
$PCP_PMDAS_DIR/trivial/Install
installation script for the pmdatrivial agent
$PCP_PMDAS_DIR/trivial/Remove
undo installation script for the pmdatrivial agent
$PCP_LOG_DIR/pmcd/trivial.log
default log file for error messages and other information
from pmdatrivial
Окружение PCP (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).
Смотри также (See also)
PCPIntro(1), pmcd(1), pmdasample(1), pmdasimple(1), pmdatxmon(1)
and PMDA(3).
