graphs showing -nan values

[sebd44]

hi all
i new in cacti and i have a fresh new installation
but in the graphs i'm seeing the values -nan
but in the devices sections i have connected via snmp and snmpwalk was succesful
what are the posible causes of this, can someone help me?

[soj]

Please check the SNMP Defaults from Cacti and your Server.

Have you Windows Server or Linux Server?

[netniV]

Also, check that you have a poller running via Task Scheduler (windows) or Cron (Linux).

[Gattancha]

I had this after upgrading to 1.1.38 (Centos 7 with PHP 5.6)

Turned out after much Googling, that the solution was to disable the PHP-SNMP extension in my PHP.ini

Soon as I did this and rebuilt the poller cache, the graphs started to populate..

[ericgarnel]

I had this after upgrading to 1.1.38 (Centos 7 with PHP 5.6)

Turned out after much Googling, that the solution was to disable the PHP-SNMP extension in my PHP.ini

Soon as I did this and rebuilt the poller cache, the graphs started to populate..

I did not find any reference to PHP-SNMP in my php.ini. I moved the snmp.ini out of /etc/php.d in the meantime - hopefully that will help.
Do you have any links to share? Thanks

[ericgarnel]

I had this after upgrading to 1.1.38 (Centos 7 with PHP 5.6)

Turned out after much Googling, that the solution was to disable the PHP-SNMP extension in my PHP.ini

Soon as I did this and rebuilt the poller cache, the graphs started to populate..

I did not find any reference to PHP-SNMP in my php.ini. I moved the snmp.ini out of /etc/php.d in the meantime - hopefully that will help.
Do you have any links to share? Thanks

I bounced httpd (systemctl restart httpd.service) and that took care of it

[ericgarnel]

I spoke too soon. I had graphs for @ 2 hours then nothing.
This is a new install so I will start over.