rrdflushcached(1) [suse man page]

RRDFLUSHCACHED(1)						      rrdtool							 RRDFLUSHCACHED(1)

NAME

       rrdflushcached - Flush the values for a spcific RRD file from memory.

SYNOPSIS

       rrdtool flushcached [--daemon address] filename [filename ...]

DESCRIPTION

       The flushcached function connects to rrdcached, the RRD caching daemon, and issues a "flush" command for the given files. The daemon will
       put the files to the head of the update queue so they are written "soon". The status will be returned only after the files' pending updates
       have been written to disk.

       filename
	       The name(s) of the RRD file(s) that are to be written to disk.

       --daemon address
	       Address of the rrdcached daemon. If not specified, the RRDCACHED_ADDRESS environment variable must be set (see below).  For a list
	       of accepted formats, see the -l option in the rrdcached manual.

		rrdtool flush --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd

ENVIRONMENT VARIABLES

       The following environment variables may be used to change the behavior of "rrdtool flushcached":

       RRDCACHED_ADDRESS
	   If this environment variable is set it will have the same effect as specifying the "--daemon" option on the command line. If both are
	   present, the command line argument takes precedence.

AUTHOR

       Florian Forster <octo at verplant.org>

1.4.3								    2009-10-14							 RRDFLUSHCACHED(1)

RRDINFO(1)							      rrdtool								RRDINFO(1)

NAME

       rrdinfo - extract header information from an RRD

SYNOPSIS

       rrdtool info filename [--daemon address]

DESCRIPTION

       The info function prints the header information from an RRD in a parsing friendly format.

       Check rrdcreate if you are uncertain about the meaning of the individual keys.

       filename
	       The name of the RRD you want to examine.

       --daemon address
	       Address of the rrdcached daemon. If specified, a "flush" command is sent to the server before reading the RRD files. This allows
	       rrdtool to return fresh data even if the daemon is configured to cache values for a long time.  For a list of accepted formats, see
	       the -l option in the rrdcached manual.

		rrdtool info --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd

EXAMPLE

       This is the output generated by running info on a simple RRD which contains two data sources and one RRA. Note that the number after the
       last_update keyword is in seconds since 1970. The string NaN stands for *UNKNOWN* data. In the example it means that this RRD has neither
       minimum nor maximum values defined for either of its data sources.

	filename = "random.rrd"
	rrd_version = "0001"
	step = 300
	last_update = 955892996
	header_size = 2872
	ds[a].type = "GAUGE"
	ds[a].minimal_heartbeat = 600
	ds[a].min = NaN
	ds[a].max = NaN
	ds[a].last_ds = "UNKN"
	ds[a].value = 2.1824421548e+04
	ds[a].unknown_sec = 0
	ds[b].type = "GAUGE"
	ds[b].minimal_heartbeat = 600
	ds[b].min = NaN
	ds[b].max = NaN
	ds[b].last_ds = "UNKN"
	ds[b].value = 3.9620838224e+03
	ds[b].unknown_sec = 0
	rra[0].cf = "AVERAGE"
	rra[0].pdp_per_row = 1
	rra[0].cdp_prep[0].value = nan
	rra[0].cdp_prep[0].unknown_datapoints = 0
	rra[0].cdp_prep[1].value = nan
	rra[0].cdp_prep[1].unknown_datapoints = 0

ENVIRONMENT VARIABLES

       The following environment variables may be used to change the behavior of "rrdtool info":

       RRDCACHED_ADDRESS
	   If this environment variable is set it will have the same effect as specifying the "--daemon" option on the command line. If both are
	   present, the command line argument takes precedence.

AUTHOR

       Tobias Oetiker <tobi@oetiker.ch>

1.4.7								    2009-04-20								RRDINFO(1)