cacti not displaying data on the graph

[shipu123]

Hi,
I am newbie in this cacti. I have added host in cacti. but it can not display data on the graph. I have checked rrd file. It shows NAN value for
ds.max.
I am using cacti version
0.8.7a
spine
Any idea to solve this problem?

[gandalf]

You've set up crontab? You already considered 2nd link of my sig?
Reinhard

[shipu123]

yes, i have setup crontab, how can i go to your secondlink?
I am adding my crontab file
thanks
shipu

My crontab

SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/

# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly
*/5 * * * * cacti php /usr/share/cacti/lib/poller.php > /dev/null 2>&1

[shipu123]

hi,
i have forgot to add one more comment, my cacti is able to show graph before i came in the picture.
but whatever i am adding it is not showing graph. but it shows grap for some host which is not added by me.
I have not change anything?
what could posiibly going wrong that it could not display anything on the graph.
shipu

[gandalf]

So old hosts are qorking fine, new hosts do not?
Reinhard

[shipu123]

yes,

[shipu123]

is there any clue, why cacti behaving like this?

[gandalf]

What about downed host detection of failing hosts? Do they use SNMP?
Reinhard

[shipu123]

Down host sometimes use SNMP. I have seen down host use SNMP but do not show SNMP error for all host.