All devices graph empty for a certain period of time

[krishnar]

Hello All,

I am having some issues with Cacti graphs. The graphs goes empty for all the devices for some period of time. I have only around 10 devices being monitored. Also this instance of Cacti is running in a Docker container. Anyone know how to fix this? This happens very randomly.

Cacti Graph.jpg (567.95 KiB) Viewed 4170 times

Log:

Code: Select all

03/22/2020 11:31:01 - SYSTEM STATS: Time:0.2643 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:30:03 - SNMPAGENT WARNING: No notification receivers configured for event: cactiNotifyDeviceFailedPoll (CACTI-MIB), severity: medium
03/22/2020 11:30:03 - SYSTEM STATS: Time:2.2233 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:29:01 - SYSTEM STATS: Time:0.2227 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:28:02 - SYSTEM STATS: Time:1.2395 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:27:01 - SYSTEM STATS: Time:0.2152 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:27:01 - SYSTEM STATS: Time:0.2223 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:26:03 - SNMPAGENT WARNING: No notification receivers configured for event: cactiNotifyDeviceFailedPoll (CACTI-MIB), severity: medium
03/22/2020 11:26:03 - SYSTEM STATS: Time:2.2588 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:25:01 - SYSTEM STATS: Time:0.2177 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:24:01 - SYSTEM STATS: Time:0.2265 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:23:03 - SYSTEM STATS: Time:2.2169 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:0
03/22/2020 11:23:03 - SYSTEM STATS: Time:2.2741 Method:cmd.php Processes:1 Threads:0 Hosts:14 HostsPerProcess:14 DataSources:0 RRDsProcessed:159

[Osiris]

What is your poller interval? What is your cron interval? What is the sampling rate for these graphs? What version of Cacti?

[krishnar]

I set the poller and cron interval as 1 minute. Cacti version is 1.2.10. Where do I check the sampling rate for graph?

[Osiris]

Under Data Sources.

[JeevesPreston]

I have this same issue. I can't find any menu/screen selection under Templates/Data Sources or Templates/Graphs to change the graph interval. From the log, though, I can clearly see that my Cron and Poller interval is at 1 minute...

Thanks for the assistance...
J

[krishnar]

I don't see that option either. For, graphs sometimes go empty for as long as 20-40 minutes and then start showing data again.

[Dummy]

What about an PING which is running continously to check if the IP-connection between Cacti and the "External World" is available without interruption?
Maybe it's not an issue of Cacti / Poller

[Osiris]

There is a bug in boost in the latest cacti. Download poller_boost.php and lib/boost.php from githubs 1.2.x branch.

[Ben94x]

There is a bug in boost in the latest cacti. Download poller_boost.php and lib/boost.php from githubs 1.2.x branch.

Hi Osiris,

I have Cacti v.1.2.8

I tried that, so I switched the old poller_boost.php (in /var/www/html/cacti) and lib/boost.php (in /var/www/html/cacti/lib) for the new one on github 1.2.x branch last day and it still not working tomorrow. Do you have another alternative that I can do ?

Here are some of my graphs

Cacti_graph_hole.png (246.57 KiB) Viewed 4128 times

Thanks

[TheWitness]

If you are using spine, you might consider downloading the 1.2.x branch as well.

[Ben94x]

If you are using spine, you might consider downloading the 1.2.x branch as well.

Yeah I'm using spine with v1.2.8.

So to be sure, I should replace all my cacti files (in var/www/html/cacti) with your current github branch 1.2.x ? (https://github.com/Cacti/cacti/tree/1.2.x).

I will not have problems and I shouldn't lose my current data?

[TheWitness]

If not using debian, the upgrade, from my perspective is pretty easy with no loss of data:

As root:

cd /var/www/html
git clone -b 1.2.x https://github.com/Cacti/cacti/cacti.git cacti-develop
/bin/cp -frp cacti-develop/* cacti
chown -R apache:apache cacti

Then, refresh your browser to go through the update if you are using the Debian packaging, it's a bit more complicated.

[Ben94x]

If not using debian, the upgrade, from my perspective is pretty easy with no loss of data:

As root:

cd /var/www/html
git clone -b 1.2.x https://github.com/Cacti/cacti/cacti.git cacti-develop
/bin/cp -frp cacti-develop/* cacti
chown -R apache:apache cacti

Then, refresh your browser to go through the update if you are using the Debian packaging, it's a bit more complicated.

Thank you TheWitness, it worked ! You just give the wrong git clone syntax (had an extra /clone in your path), but after theses commands it worked, just needed to shutdown my Cacti server and restart it with 4 cores instead of 2.

I have better graphs but it's not perfect yet.
As you can see here:

CactiGraph_v1.2.11.png (117.69 KiB) Viewed 4066 times

Do you know what is the best config in Cacti for my poller ? I put 500 max_connections in my MARIADB.

Like for theses variables :

Data collectors:
Processes:
Threads:
PHP Scripts:

Connections = data collectors * processes * (threads + script servers)

I don't really know what to put to get the best performances.

Thanks,
Ben

[TheWitness]

1.2.11 is released. Connection counts are important. There is a feature request out there for that one for a forthcoming release.

[Ben94x]

1.2.11 is released. Connection counts are important. There is a feature request out there for that one for a forthcoming release.

Alright, but I still have trouble with holes in my graphs...

Cacti2.png (109.29 KiB) Viewed 4069 times

Is it due to my bad poller settings ?

poller1.png (27.17 KiB) Viewed 4069 times

poller2.png (62.86 KiB) Viewed 4069 times

poller3.png (63.97 KiB) Viewed 4069 times

poller4.png (50.82 KiB) Viewed 4069 times