Not writing graph when create a new device

[jinju]

HI,
When create a graph for new device, working graph of another device has stopped working. Getting blank graph.
Is there any device limitation for creating graphs in Cacti.
Number of Device added in Cacti : 104
Created Graph : 338

Server Spec:-
MemTotal: 1863088 kB
CPU : 2

cat /etc/php.ini | grep memory_limit
memory_limit = 500M

Cacti Version 1.2.15

It will start work when delete any other device.

Thanks
Jinju

[TheWitness]

Timeouts likely on the device. Your log should have a lot of detail.

[jinju]

This is the log . I dont know what to do. Please help
2020-12-31 14:55:01 - WEATHERMAP WARNING: [Map 6] WAN.conf: ReadData: LINK node03813-node03806, target: /usr/share/cacti/rra/peak_traffic_in_887.rrd on config line 1130 of /usr/share/cacti/plugins/weathermap/configs/WAN.conf had no valid data, according to WeatherMapDataSource_rrd

[Osiris]

1) permissions, if boost is enabled, you rrdfiles have to be writable by the web server,

2) SELinux or App Armor,

3) Device timeouts

You shou post your entire cacti log file for the period where you experienced issues.

[jinju]

Thanks for your suggestion.
There is no issue for last three days. Let me monitor is. I will share the log once the issue happened again.

[jinju]

Hi,

Graphs are working fine after enabled Boost. But Weathermap is not showing traffic status. Its shows Grey color on link. PFA
Please help me for rectifying it.
These are the behavior of weathermap:
1) Some time all the weathermap devices will shows the traffic status.
2) some of the devices will shows traffic status
3) Most of the time it will be completely Grey color on link in weathermap.

[jinju]

This issue has been resolved after changed poller type from cmd to spine. I have disabled "Enabled on demand RRD updating".