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pmdasample - Online in the Cloud

Run pmdasample in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command pmdasample that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


pmdasample - sample performance metrics domain agent (PMDA)

SYNOPSIS


$PCP_PMDAS_DIR/pmdasample [-d domain] [-i port] [-l logfile] [-p] [-u socket] [-U
username]

DESCRIPTION


pmdasample is a sample Performance Metrics Domain Agent (PMDA) which exports a variety of
synthetic performance metrics.

This PMDA was developed as part of the quality assurance testing for the PCP product, but
has other uses, most notably in the development of new PCP clients.

The metrics exported by the sample PMDA cover the full range of data types, data
semantics, value cardinality, instance domain stability and error conditions found in real
PMDAs.

A brief description of the pmdasample 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.

-i Expect PMCD to connect to pmdasample on the specified TCP/IP port. port may be a
port number or port name.

-l Location of the log file. By default, a log file named sample.log is written in the
current directory of pmcd(1) when pmdasample 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.

-p Expect PMCD to create a pipe and the connection to pmdasample is via standard input
and standard output. This is the default connection mode.

-u Expect PMCD to connect to pmdasample on the Unix domain socket named socket.

-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.

At most one of the options -i, -p and -u may be specified.

INSTALLATION


If you want access to the names, help text and values for the sample performance metrics,
do the following as root:

# cd $PCP_PMDAS_DIR/sample
# ./Install

Note that the installation script also installs the DSO version of the sample PMDA, so
there are in fact two PMDAs installed, and two sets of performance metrics, namely
sample.* and sampledso.*.

If you want to undo the installation (and remove both PMDAs), do the following as root:

# cd $PCP_PMDAS_DIR/sample
# ./Remove

pmdasample 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.

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