RRDtool Error (No such file)

Tags: #<Tag:0x00007f84a871a0a0> #<Tag:0x00007f84a8719fd8> #<Tag:0x00007f84a8719f10> #<Tag:0x00007f84a8719e20>

Hi All,

some of my devices are not graphing when i run a manual poller.php I get the following error.

RRD[update xx.xx.xx.xx/poller-perf-applications.rrd N:18.201302051544 --daemon xx.xx.xx.xx:42217]
RRDtool Output: ERROR: rrdcached: No such file: /mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-access-270.rrd
ERROR: rrdcached: No such file: /mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-auth-270.rrd
ERROR: rrdcached: No such file: /mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-acct-270.rrd
ERROR: rrdcached: No such file: /mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-proxy_access-270.rrd
ERROR: rrdcached: No such file: /mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-proxy_auth-270.rrd
ERROR: rrdcached: No such file: /mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-proxy_acct-270.rrd
ERROR: rrdcached: No such file: /mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-queue-270.rrd

for some reason its saying that there is no such file but when i check in that dir I see the following files.

-rwxrwxrwx 1 root root 494576 May 12 10:40 app-freeradius-access-270.rrd*
-rwxrwxrwx 1 root root 864152 May 12 10:40 app-freeradius-acct-270.rrd*
-rwxrwxrwx 1 root root 740960 May 12 10:40 app-freeradius-auth-270.rrd*
-rwxrwxrwx 1 root root 494576 May 12 10:40 app-freeradius-proxy_access-270.rrd*
-rwxrwxrwx 1 root root 864152 May 12 10:40 app-freeradius-proxy_acct-270.rrd*
-rwxrwxrwx 1 root root 740960 May 12 10:40 app-freeradius-proxy_auth-270.rrd*
-rwxrwxrwx 1 root root 864152 May 12 10:40 app-freeradius-queue-270.rrd*

Please note that this is on my secondary poller and when I check on my Main poller which is running LibreNMS I’m not seeing any files in that dir.

Manually creating those files give the following error.

ERROR: rrdcached: RRD Error: mmaping file ‘/mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-acct-270.rrd’: Invalid argument
ERROR: rrdcached: RRD Error: mmaping file ‘/mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-proxy_access-270.rrd’: Invalid argument
ERROR: rrdcached: RRD Error: mmaping file ‘/mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-proxy_auth-270.rrd’: Invalid argument
ERROR: rrdcached: RRD Error: mmaping file ‘/mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-proxy_acct-270.rrd’: Invalid argument
ERROR: rrdcached: RRD Error: mmaping file ‘/mnt/data-01/rrd/xx.xx.xx.xx/app-freeradius-queue-270.rrd’: Invalid argument

Seems to me there is a issue with the RRDcache its not pushing these files from my secondary to primary or primary is not pulling from secondary.

I think you have misunderstood.

rrdcached does not allow redundancy. All pollers/instances must point to the same rrdcached.

Hi Murrant my main rrdcached is running on my primary LibreNMS server.

so my 2 pollers are pointing to the same rrdcached server.

Thanks

Did you set your rrdtool version on both servers?

@murrant here is my config.php

Primary server = 1.1.1.1 (rrdcached installed on this server)
Secondary Server 1.1.1.2

Primary Server Config:

$config[‘distributed_poller_name’] = php_uname(‘n’);
$config[‘distributed_poller_group’] = ‘0’;
$config[‘distributed_poller_memcached_host’] = “1.1.1.1”;
$config[‘distributed_poller_memcached_port’] = 11211;
$config[‘distributed_poller’] = true;
$config[‘rrdcached’] = “1.1.1.1:42217”;
$config[‘rrdcached’] = “unix:/run/rrdcached.sock”;
$config[‘rrdtool_version’] = ‘1.5.5’;

Secondary Server config:

$config[‘distributed_poller_name’] = php_uname(‘n’);
$config[‘distributed_poller_group’] = ‘1’;
$config[‘distributed_poller_memcached_host’] = “1.1.1.1”;
$config[‘distributed_poller_memcached_port’] = 11211;
$config[‘distributed_poller’] = true;
$config[‘rrdcached’] = “1.1.1.1:42217”;

Ahh i see!!

Thanks for pointing me in the right direction.

added to my secondary config.php>

$config['rrdtool_version']                   = '1.5.5';

its working now

Thank you very much

Looks like the second server is not allowed to create rrd files because you haven’t set the version.

Perfect Thank you very much!