No localhost graphs on new install

dunxd · Post by **dunxd** » Wed Sep 23, 2009 6:06 am

I installed Cacti yesterday, and have found that the default checks on localhost (I haven't added anything else yet) do not appear to work.

The graphs appear, but with no lines, and all the values showing as NaN.

Here is the debug output for a single poller pass:

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09/23/2009 12:00:02 PM - SYSTEM STATS: Time:1.2426 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:5 RRDsProcessed:5
09/23/2009 12:00:02 PM - POLLER: Poller[0] CACTI2RRD: /usr/local/groundwork/common/bin/rrdtool update /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/rra/localhost_mem_buffers_3.rrd --template mem_buffers 1253703601:U
09/23/2009 12:00:02 PM - POLLER: Poller[0] CACTI2RRD: /usr/local/groundwork/common/bin/rrdtool update /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/rra/localhost_mem_swap_4.rrd --template mem_swap 1253703601:U
09/23/2009 12:00:02 PM - POLLER: Poller[0] CACTI2RRD: /usr/local/groundwork/common/bin/rrdtool update /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/rra/localhost_load_1min_5.rrd --template 1253703601:U
09/23/2009 12:00:02 PM - POLLER: Poller[0] CACTI2RRD: /usr/local/groundwork/common/bin/rrdtool update /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/rra/localhost_users_6.rrd --template users 1253703601:U
09/23/2009 12:00:02 PM - POLLER: Poller[0] CACTI2RRD: /usr/local/groundwork/common/bin/rrdtool update /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/rra/localhost_proc_7.rrd --template proc 1253703601:U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Time: 0.0418 s, Theads: N/A, Hosts: 1
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[7] CMD: perl /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/scripts/unix_processes.pl, output: U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[7] WARNING: Result from CMD not valid. Partial Result: U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[6] CMD: perl /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/scripts/unix_users.pl , output: U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[6] WARNING: Result from CMD not valid. Partial Result: U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[5] CMD: perl /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/scripts/loadavg_multi.pl, output: U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[5] WARNING: Result from CMD not valid. Partial Result: U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[4] CMD: perl /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/scripts/linux_memory.pl SwapFree:, output: U
09/23/2009 12:00:02 PM - CMDPHP: Poller[0] Host[1] DS[4] WARNING: Result from CMD not valid. Partial Result: U
09/23/2009 12:00:01 PM - CMDPHP: Poller[0] Host[1] DS[3] CMD: perl /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/scripts/linux_memory.pl MemFree:, output: U
09/23/2009 12:00:01 PM - CMDPHP: Poller[0] Host[1] DS[3] WARNING: Result from CMD not valid. Partial Result: U
09/23/2009 12:00:01 PM - CMDPHP: Poller[0] Host[1] PING: Ping not performed due to setting.
09/23/2009 12:00:01 PM - POLLER: Poller[0] WARNING: Poller[0] Host[1] Ping Time was not numeric
09/23/2009 12:00:01 PM - CMDPHP: Poller[0] WARNING: sockets support not enabled in PHP, falling back to SNMP ping
09/23/2009 12:00:01 PM - POLLER: Poller[0] NOTE: There are no items in your poller for this polling cycle!
09/23/2009 12:00:01 PM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/local/groundwork/php/bin/php, ARGS: -q "/usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/cmd.php" 1 1]
09/23/2009 12:00:01 PM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/local/groundwork/php/bin/php, ARGS: -q "/usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/cmd.php" 0 0]
09/23/2009 12:00:01 PM - POLLER: Poller[0] NOTE: Poller Int: '300', Cron Int: '300', Time Since Last: '299', Max Runtime '298', Poller Runs: '1'

When I run the scripts from shell (whilst su'd to the user I am running cacti as) I do get valid output:

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[nagios@sm01 cacti]$ perl /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/scrpts/linux_memory.pl MemFree:
442188

Can anyone suggest any causes/solutions for this? I'm running this on CentOS 5.2 also running an installtion of Grounwork Open Source (Nagios front end). I've searched on the forums, but all the solutions I found related to people writing their own scripts - not writing the ones that come out of the box.

Thanks in advance.

Duncan

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Post by **TheWitness** » Thu Sep 24, 2009 7:24 am

Looks like you don't have snmp turned on. You should open a ticket with GWorks.

TheWitness

dunxd · Post by **dunxd** » Thu Sep 24, 2009 8:41 am

What makes you think SNMP isn't turned on?

Anyway - these are local checks that don't require SNMP aren't they?

The commands are retrieving counts sucessfully when run from command line as the same user that cactii runs as.

From the logs it also looks like the counts are being collected and passed to rrdtool:

09/23/2009 12:00:02 PM - POLLER: Poller[0] CACTI2RRD: /usr/local/groundwork/common/bin/rrdtool update /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/rra/localhost_mem_buffers_3.rrd --template mem_buffers 1253703601:U

But no lines on the graphs. So I am thinking that somehow the rrd files aren't getting updated correctly (because of the presence of the :U perhaps), or for some reason the script that generates the graphs is not reading the rrd files right.

dunxd · Post by **dunxd** » Thu Sep 24, 2009 10:09 am

Just to be carefull that I'm not being totally arrogant, I double checked snmpd is running and ran an snmpwalk:

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snmpwalk -v 1 -c public -O e 127.0.0.1

It is working ok.

Post by **TheWitness** » Thu Sep 24, 2009 8:34 pm

Let us know what Groundworks says.

TheWitness

dunxd · Post by **dunxd** » Fri Sep 25, 2009 3:38 am

I'm not quite sure what question to ask Groundwork. Are you suggesting
that SNMP is not working on the target machine, that snmp support in PHP isn't working, or something else?

I can't really tell from the logs what the cause of the problem might be.

If I go to Groundworks and tell them "Cacti isn't working" without more detail they are only going to send me back here.

Post by **TheWitness** » Fri Sep 25, 2009 7:16 am

Are you paying for support?

dunxd · Post by **dunxd** » Fri Sep 25, 2009 7:18 am

Nope - Community Edition. Forums only.

Post by **TheWitness** » Fri Sep 25, 2009 7:20 am

Too bad, they give you a jacked up build and then expect you to buy to get support. The following, from the post anway, appears to have either a line break or a cr between the Name and the Value. There must be no space between the Name, the Colon ":", and the Value.

[nagios@sm01 cacti]$ perl /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/scrpts/linux_memory.pl MemFree:
442188

TheWitness

peecee · Post by **peecee** » Fri Sep 25, 2009 7:25 am

That line above

09/23/2009 12:00:02 PM - POLLER: Poller[0] CACTI2RRD: /usr/local/groundwork/common/bin/rrdtool update /usr/local/groundwork/apache2/htdocs/cacti-0.8.7e/rra/localhost_mem_buffers_3.rrd --template mem_buffers 1253703601:U

1253703601 is unix epoch time for Wed, 23 Sep 2009 11:00:01 GMT. The U is unknown.

So it's not getting the data it needs for the rrd.

Post by **TheWitness** » Fri Sep 25, 2009 7:28 am

Uhm, run the script from the command line please. It's getting data, but the output is hosed. "Read" my last post again.

TheWitness

dunxd · Post by **dunxd** » Fri Sep 25, 2009 8:01 am

@TheWitness
"Read" my post again - that is me running the script from the command line;

Input:
perl /usr/local/groundwork/apache2/htdocs/cacti-0.87e/scripts/memory.pl MemFree:

Output:
442188

@peecee
Thanks for clarifying the output from the log

peecee · Post by **peecee** » Fri Sep 25, 2009 8:05 am

TheWitness wrote:Uhm, run the script from the command line please. It's getting data, but the output is hosed. "Read" my last post again.

TheWitness

LOL - look at the time of your post and mine. I think I was typing it in but you put yours in quicker. Now that I see your response, it definitely looks like the command line shows a <cr><lf> in the response, which is probably why the log/automatic collection effort shows a U. At least the OP has a solid reason for why the data being returned is a U now.

peecee · Post by **peecee** » Fri Sep 25, 2009 8:17 am

dunxd wrote:@TheWitness
"Read" my post again - that is me running the script from the command line;

Input:
perl /usr/local/groundwork/apache2/htdocs/cacti-0.87e/scripts/memory.pl MemFree:

Output:
442188

@peecee
Thanks for clarifying the output from the log

appears to have either a line break or a cr between the Name and the Value

TheWitness did read it - I missed this part by skimming over the answer too fast. So, at least you've got something to go back to Groundworks support (either the community or the company) to fix this. It is definitely not normal to put the data on a different line than the OID, which is essentially what they're doing.

Post by **TheWitness** » Fri Sep 25, 2009 8:24 am

No problem. Flames are free

. If Groundworks were donating money to our Beer cause, I would not be nearly as hostile. Unfortunately, they don't give a cent to the community in the last year or so. They have been good in the past paying for hotel in SF and some airfare, although they gross $24M+ a year and feed us peanuts (<$10k).

TheWitness

No localhost graphs on new install

No localhost graphs on new install

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