[collectd] rrdcached+collectd

[Cyril Feraudet]

Can I see you rrdcached command line ? 

Le 07.06.2012 16:57,
Jeremy MAURO a écrit : 

> Here are the permissions:
> # ls -al
/var/run/*sock
> srwxrwxrwx 1 root root 0 Jun 7 16:52
/var/run/rrdcached.sock
> 
> but still having the issue :(
> 
> [pid
14433] write(6, "-1 Permission deniedn", 21) = 21
> [pid 14433]
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6,
revents=POLLIN}])
> [pid 14433] read(6, "update
/var/lib/collectd/rrd/ext"..., 8192) = 101
> [pid 14433] write(6, "-1
Permission deniedn", 21) = 21
> [pid 14433] poll([{fd=6,
events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6, revents=POLLIN}])
> [pid
14433] read(6, "update /var/lib/collectd/rrd/ext"..., 8192) = 100
> [pid
14433] write(6, "-1 Permission deniedn", 21) = 21
> [pid 14433]
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6,
revents=POLLIN}])
> [pid 14433] read(6, "update
/var/lib/collectd/rrd/ext"..., 8192) = 94
> [pid 14433] write(6, "-1
Permission deniedn", 21) = 21
> [pid 14433] poll([{fd=6,
events=POLLIN|POLLPRI}], 1, 500) = 0 (Timeout)
> [pid 14433]
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 500 
> [pid 14254] ) = 0
(Timeout)
> [pid 14254] poll([{fd=4, events=POLLIN|POLLPRI}], 1, 1000 
>
[pid 14433] ) = 0 (Timeout)
> [pid 14433] poll([{fd=6,
events=POLLIN|POLLPRI}], 1, 500) = 0 (Timeout)
> [pid 14433]
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 500 
> [pid 14254] ) = 0
(Timeout)
> [pid 14254] poll([{fd=4, events=POLLIN|POLLPRI}], 1, 1000 
>
[pid 14433] ) = 0 (Timeout)
> 
> Regards,
> JM
> 
> On 06/07/12 16:46,
Cyril Feraudet wrote: 
> 
>> This look like a permission problem on the
unix socket of rrdcached ... 
>> 
>>> Hi,
>>> 
>>> thx for the tip:
>>>
[pid 12990] ) = 0 (Timeout)
>>> [pid 12990] poll([{fd=6,
events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6, revents=POLLIN}])
>>> [pid
12990] read(6, "STATSn", 8192) = 6
>>> [pid 12990] write(6, "9
Statistics follown", 20) = 20
>>> [pid 12990] write(6, "QueueLength:
0nUpdatesReceived: "..., 158) = 158
>>> [pid 12990] poll([{fd=6,
events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6, revents=POLLIN}])
>>> [pid
12990] read(6, "update /var/lib/collectd/rrd/XXX"..., 8192) = 108
>>>
[pid 12990] write(6, "-1 Permission deniedn", 21) = 21
>>> [pid 12990]
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6,
revents=POLLIN}])
>>> [pid 12990] read(6, "update
/var/lib/collectd/rrd/XXX"..., 8192) = 100
>>> [pid 12990] write(6, "-1
Permission deniedn", 21) = 21
>>> [pid 12990] poll([{fd=6,
events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6, revents=POLLIN}])
>>> [pid
12990] read(6, "update /var/lib/collectd/rrd/XXX"..., 8192) = 117
>>>
[pid 12990] write(6, "-1 Permission deniedn", 21) = 21
>>> [pid 12990]
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6,
revents=POLLIN}])
>>> [pid 12990] read(6, "update
/var/lib/collectd/rrd/XXX"..., 8192) = 113
>>> [pid 12990] write(6, "-1
Permission deniedn", 21) = 21
>>> [pid 12990] poll([{fd=6,
events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6, revents=POLLIN}])
>>> [pid
12990] read(6, "update /var/lib/collectd/rrd/XXX"..., 8192) = 113
>>>
[pid 12990] write(6, "-1 Permission deniedn", 21) = 21
>>> [pid 12990]
poll([{fd=6, events=POLLIN|POLLPRI}], 1, 500) = 1 ([{fd=6,
revents=POLLIN}])
>>> [pid 12990] read(6, "update
/var/lib/collectd/rrd/XXX"..., 8192) = 115
>>> 
>>> But I did a 'chmod
777 -R /var/lib/collectd/rrd', how could that be possible? And what's
more, both deamon run as 'root'.
>>> 
>>> Regards,
>>> JM
>>> 
>>> On
06/07/12 15:28, Cyril Feraudet wrote: 
>>> 
>>>>> Hi everyone,
>>>>>

>>>>> I am trying to setup collectd+rrdcached on a debian squeeze, so
here is 
>>>>> the setup:
>>>>> 
>>>>> [root at XXX]:/ # dpkg -l |egrep
'collectd|rrdca'
>>>>> ii collectd 
>>>>> 4.10.1-1+squeeze2 statistics
collection and monitoring daemon
>>>>> ii collectd-core 
>>>>>
4.10.1-1+squeeze2 statistics collection and monitoring daemon 
>>>>>
(core system)
>>>>> ii collectd-utils 
>>>>> 4.10.1-1+squeeze2
statistics collection and monitoring daemon 
>>>>> (utilities)
>>>>> ii
libcollectdclient0 
>>>>> 4.10.1-1+squeeze2 client library for
collectd's control interface
>>>>> ii rrdcached 
>>>>> 1.4.3-1 data
caching daemon for RRDtool
>>>>> 
>>>>> So here are the configuration
files:
>>>>> [root at XXX]:/ # cat /etc/collectd.d/rrdcached.conf
>>>>>
LoadPlugin rrdcached
>>>>> 
>>>>> DaemonAddress
"unix:/var/run/rrdcached.sock"
>>>>> DataDir
"/var/lib/collectd/rrd"
>>>>> CreateFiles true
>>>>> 
>>>>>
[root at XXX]:/# ps -edf|grep rrdc
>>>>> root 11661 1 0 15:11 ? 00:00:00
/usr/bin/rrdcached -l 
>>>>> unix:/var/run/rrdcached.sock -j
/var/lib/rrdcached/journal/ -F -b 
>>>>> /var/lib/rrdcached/db/ -B -p
/var/run/rrdcached.pid
>>>>> 
>>>>> And when I am trying to start
collectd here are the error log:
>>>>> Jun 7 15:11:07 extranet
collectd[11692]: rrdcached plugin: rrdc_update 
>>>>>
(/var/lib/collectd/rrd/XXX/processes/ps_state-sleeping.rrd, 
>>>>>
[1339074667:107.000000], 1) failed with status -1.
>>>>> Jun 7 15:11:07
extranet collectd[11692]: rrdcached plugin: rrdc_update 
>>>>>
(/var/lib/collectd/rrd/XXX/processes/ps_state-zombies.rrd, 
>>>>>
[1339074667:0.000000], 1) failed with status -1.
>>>>> 
>>>>> For every
plugin defined in collectd.
>>>>> 
>>>>> So anyone has any idea?
>>>>

>>>> Hi alone, 
>>>> 
>>>> The quickest method IMHO to know why is to
use strace -s 100 -f -p 
>>>> 
>>>> I've already try to make error from
rrdcached available in collectd logs, but rrdcached need to be patched
... 
>>>> 
>>>> Cyril 
>>>> 
>>>>
_______________________________________________
>>>> collectd mailing
list
>>>> collectd at verplant.org [1]
>>>>
http://mailman.verplant.org/listinfo/collectd [2]

  

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