Hi,
Actually memory_buffered.rrd is there:
[root@crdc-c210-141 ~]# ls -al
/root/tools/rrdcached/10.74.125.141/memory/memory-buffered.rrd
-rw-r--r--. 1 root root 153688 Mar 6 09:09
/root/tools/rrdcached/10.74.125.141/memory/memory-buffered.rrd
When I try to access this file locally by the absolute path, it works:
[root@crdc-c210-141 ~]# rrdtool fetch
/root/tools/rrdcached/10.74.125.141/memory/memory-buffered.rrd AVERAGE --start
1362532000 --end 1362532140
value
1362532020: 3.6363878400e+08
1362532040: 3.6363878400e+08
1362532060: 3.6363878400e+08
1362532080: 3.6363878400e+08
1362532100: 3.6363878400e+08
1362532120: 3.6363878400e+08
1362532140: 3.6363878400e+08
1362532160: 3.6363878400e+08
But when I try to access this file remotely by the relative path, it doesn’t
work:
[root@crdc-c210-97 ~]# rrdtool fetch 10.74.125.141/memory/memory-buffered.rrd
AVERAGE --start 1362532000 --end 1362532140 --daemon 10.74.125.141
ERROR: opening '10.74.125.141/memory/memory-buffered.rrd': No such file or
directory
I have checked all the path, there is no relative path. And I have changed �Cb
before the listener as following:
rrdcached -w 600 -z 10 -p /root/tools/rrdcached/rrdcached.pid -b
/root/tools/rrdcached -j /root/tools/rrdcached/cached -l 10.74.125.141 -l
unix:/tmp/rrdcached.sock
All of these rrd files are created by collectd-rrdcached plugin and can updated
by the rrdcached daemon.
What’s the problem?
B.R.
Benjamin Wang
From: Steve Shipway [mailto:s.ship...@auckland.ac.nz]
Sent: 2013年3月6日 4:55
To: Benjamin Wang (gendwang); rrd-users@lists.oetiker.ch
Subject: RE: [rrd-users] Does rrdcached within rrdtool 1.4.7 support fetch,
info etc?
Where is your RRD file?
Your rrdcached command line says it should be under /root/tools/rrdcached (this
is the �Cb parameter, the base directory for the RRD files)
Your call to rrdtool is wrong �C you don’t need to give the IP address in the
RRD path unless you really have a directory called that! So…
rrdtool info 10.74.125.141/memory/memory-buffered.rrd --daemon 10.74.125.141
This tells rrdtool to talk to rrdcached via TCP (the �Cdaemon 10.74.125.141
part)
It then requests a file ‘10.74.125.141/memory/memory-buffered.rrd’
Since this doesn’t start with a /, the basedir is used, and rrdcached looks for
/root/tools/rrdcached/10.74.125.141/memory/memory-buffered.rrd
This is probably not what you were trying to do. Make sure the �Cb basedir is
set correctly for rrdcached, and pass the relative path to rrdtool. Only
specify the rrdcached address in the �Cdaemon parameter, or in the
RRDCACHED_ADDRESS environment variable.
Having said all the, the stable release of rrdcached does not support all the
functions. You need the trunk version to get such things as create and info,
at least you did last time I checked. I think the 1.4 stable version only
supports graph, fetch, update.
Steve
________________________________
Steve Shipway
ITS Unix Services Design Lead
University of Auckland, New Zealand
Floor 1, 58 Symonds Street, Auckland
Phone: +64 (0)9 3737599 ext 86487
DDI: +64 (0)9 924 6487
Mobile: +64 (0)21 753 189
Email: s.ship...@auckland.ac.nz<mailto:s.ship...@auckland.ac.nz>
P Please consider the environment before printing this e-mail :
打印本邮件，将减少一棵树存活的机会
From:
rrd-users-bounces+s.shipway=auckland.ac...@lists.oetiker.ch<mailto:rrd-users-bounces+s.shipway=auckland.ac...@lists.oetiker.ch>
[mailto:rrd-users-bounces+s.shipway=auckland.ac...@lists.oetiker.ch] On Behalf
Of Benjamin Wang (gendwang)
Sent: Wednesday, 6 March 2013 4:14 a.m.
To: rrd-users@lists.oetiker.ch<mailto:rrd-users@lists.oetiker.ch>
Subject: [rrd-users] Does rrdcached within rrdtool 1.4.7 support fetch, info
etc?
Hi,
I try to setup collectd and rrdcached in one machine, and try to access
rrdcached in another machine. The start script is as following:
rrdcached -w 600 -z 10 -p /root/tools/rrdcached/rrdcached.pid -b
/root/tools/rrdcached -j /root/tools/rrdcached/cached -l 10.74.125.141 -l
unix:/tmp/rrdcached.sock
When I access by rrdtool in the local machine with absolute path, everything is
OK. But I try to access in the remote machine by the following commad:
rrdtool info 10.74.125.141/memory/memory-buffered.rrd --daemon 10.74.125.141
rrdtool fetch 10.74.125.141/memory/memory-buffered.rrd AVERAGE --start
1362495020 --end 1362495620 --daemon 10.74.125.141
The return result is always “ERROR: opening
'10.74.125.141/memory/memory-buffered.rrd': No such file or directory”.
I have checked the path. There is no symbolic link.
Does rrdtool 1.4.7 support remotely fetch, info?
B.R.
Benjamin Wang
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