Why poller.php don't run !

vpnnav · Joined: 15 May 2008 Posts: 16

Hi !
I have a problem with crontab
after i add :
*/2 * * * * cactiuser php /var/www/html/cacti/poller.php /dev/null 2>&1
No polling is excuted

However if I take from CLI such as :
[root@anh cacti]# php poller.php
05/19/2008 05:42:36 PM - POLLER: Poller[0] WARNING: Cron is out of sync with the Poller Interval! The Poller Interval is '60' seconds, with a maximum of a '300' second Cron, but 603 seconds have passed since the last poll!
OK u:0.00 s:0.03 r:3.10
OK u:0.00 s:0.03 r:3.11
OK u:0.00 s:0.03 r:3.11
OK u:0.00 s:0.03 r:3.11
OK u:0.00 s:0.04 r:3.11
OK u:0.00 s:0.04 r:3.11
OK u:0.00 s:0.04 r:3.11
05/19/2008 05:42:41 PM - SYSTEM STATS: Time:4.9390 Method:cmd.php Processes:10 Threads:N/A Hosts:3 HostsPerProcess:1 DataSources:11 RRDsProcessed:8
OK u:0.00 s:0.04 r:4.13
-> Nothing is seemed to wrong with php or poller.php .
I don't understand what happend to Crontabs ?and result of that my cacti log is only line : 05/19/2008 05:34:21 PM - WEBUI: Cacti Log Cleared from Web Management Interface
Have any ideas help me ?
thanks alot

kanada · Cacti User Joined: 28 Aug 2005 Posts: 125

neel · Joined: 21 May 2008 Posts: 3

Hello All,

I got the same exact problem... poller.php is not populating the data. If I run "php -f poller.php" from the CLI it runs fine but it looks like it doesn't run from the cronjob while syslog logs that cronjob was executed but no graph is populated with data.

neel · Joined: 21 May 2008 Posts: 3

Attached is the DEBUG log while running poller.php from the CLI. Hope if someone can figure out this problem...

Cheers,
Neel

buck · Joined: 04 Sep 2007 Posts: 17

Try putting the command under the crontab for cactiuser instead of root.

neel · Joined: 21 May 2008 Posts: 3

Thanks for your reply...

But this is where I got confused... The installation guide said to run the cronjob as user "cactiuser" but it does not say anywhere if we have to create a local system user as "cactiuser". We did create one user but thats for MySQL DB...

So the question is do we have to create a local system user as "cactiuser" and run the cronjob as "cactiuser" and not as "root"? If so, do we have to change the permission also on "poller.php" to "cactiuser"?

Cheers,
Neel

buck · Joined: 04 Sep 2007 Posts: 17

You do have to create or use a valid user name. The instructions don't go though the step of creating an account, but do specify to use a valid one.

SoftDux · Posted: Thu Aug 07, 2008 9:24 am Post subject:

I found that it also works if you add it to root's crontab, without specifying a user: