Empty Graphs on CentOS 5.5

[sarmed]

I am a total cacti newbie. I am using CentOS 5.5 with Cacti version 0.8.7h. The problem that I'm facing is that I get empty graphs and the value always shows "nan". I have even waited for 30 minutes but still the graphs are not being populated, even the graphs for localhost processes or load average.

I think that I can snmpwalk successfully. If I turn on graph in debugging mode, RRD also says OK. The device status is also 'up' in 'Device' menu. I have no clue what is wrong.

Also, I have deployed Cacti in a Debian 6, and it has been running smoothly for more than 48 hours. Still, I'm getting empty graphs in ping latency, but that's not important at the moment.

Here is a URL for snapshots of my graphs.
https://picasaweb.google.com/1008060189 ... directlink

Please advise.
___
Sarmed

[TheWitness]

Are the entries in the poller cache? What's in your log file? Are the permissions on the 'rra' directory correct?

[sarmed]

The host was turned off, so the log may be old.

I'm not sure where the poller cache is.


[root@fileserver2 cacti]# tail /var/www/cacti/log/cacti.log
10/12/2011 06:20:01 AM - SYSTEM STATS: Time:0.1320 Method:cmd.php Processes:1 Threads:N/A Hosts:3 HostsPerProcess:3 DataSources:7 RRDsProcessed:6
10/12/2011 06:25:01 AM - SYSTEM STATS: Time:0.1308 Method:cmd.php Processes:1 Threads:N/A Hosts:3 HostsPerProcess:3 DataSources:7 RRDsProcessed:6
10/12/2011 06:30:01 AM - SYSTEM STATS: Time:0.1315 Method:cmd.php Processes:1 Threads:N/A Hosts:3 HostsPerProcess:3 DataSources:7 RRDsProcessed:6
10/12/2011 06:35:02 AM - SYSTEM STATS: Time:0.1343 Method:cmd.php Processes:1 Threads:N/A Hosts:3 HostsPerProcess:3 DataSources:7 RRDsProcessed:6
10/12/2011 06:40:01 AM - SYSTEM STATS: Time:0.1268 Method:cmd.php Processes:1 Threads:N/A Hosts:3 HostsPerProcess:3 DataSources:7 RRDsProcessed:6
10/12/2011 06:45:01 AM - SYSTEM STATS: Time:0.1309 Method:cmd.php Processes:1 Threads:N/A Hosts:3 HostsPerProcess:3 DataSources:7 RRDsProcessed:6


Permissions
[root@fileserver2 cacti]# ls -l
drwxr-xr-x 2 cacti cacti 4096 Oct 12 11:15 rra

[root@fileserver2 cacti]# ls -l /var/www/cacti/rra
total 1036
-rw-r--r-- 1 cacti cacti 94668 Oct 12 10:25 centos_traffic_in_12.rrd
-rw-r--r-- 1 cacti cacti 94668 Oct 12 10:25 centos_traffic_in_13.rrd
-rw-r--r-- 1 cacti cacti 94668 Oct 13 09:45 centos_traffic_in_8.rrd
-rw-r--r-- 1 cacti cacti 94668 Oct 12 10:20 localhost_hdd_free_10.rrd
-rw-r--r-- 1 cacti cacti 94668 Oct 12 10:20 localhost_hdd_free_11.rrd
-rw-r--r-- 1 cacti cacti 94668 Oct 12 10:20 localhost_hdd_free_8.rrd
-rw-r--r-- 1 cacti cacti 94668 Oct 12 10:20 localhost_hdd_free_9.rrd
-rw-r--r-- 1 cacti cacti 141492 Oct 13 09:45 localhost_load_1min_5.rrd
-rw-r--r-- 1 cacti cacti 47844 Oct 13 09:45 localhost_mem_buffers_3.rrd
-rw-r--r-- 1 cacti cacti 47844 Oct 13 09:45 localhost_mem_swap_4.rrd
-rw-r--r-- 1 cacti cacti 47844 Oct 13 09:45 localhost_proc_7.rrd
-rw-r--r-- 1 cacti cacti 47844 Oct 13 09:45 localhost_users_6.rrd

[TheWitness]

Console->System Utilities->View Poller Cache

[sarmed]

I have erased and re-installed cacti on the server. please find the link for the screen shots of poller cache and cacti log.

https://picasaweb.google.com/1008060189 ... directlink

the weird thing is, my system time and the cacti log time are different. is this causing all the trouble?

[TheWitness]

Make sure that the OS and WebSite have identical timezones. Running the poller from the command line will let you know this for sure.

[sarmed]

[root@fileserver2 cacti]# php /var/www/cacti/poller.php
[root@fileserver2 cacti]#

and the host i'm trying to poll is actually localhost. would time be a problem here?

[TheWitness]

Use the --force flag.

[sarmed]

I have decommissioned the CentOS Server. I will not be using cacti on CentOS for the time being. I have a bit of problem on a Debian 6 Server, and I will start a new thread soon.

Thanks to everyone for the help. Appreciate it.

Can any of the moderators please lock the post. Thank you.