Hello.
I see a very weird behaviour on all our Cisco NCS on LibreNMS
The “standard” discovery fails to discover some components like ipv4-addresses, ipv6-addresses, discovery-protocols, for example during a global discovery ->
php discovery.php -h 50
....
#### Load disco module ipv4-addresses ####
>> Runtime for discovery module 'ipv4-addresses': 12.0700 seconds with 9496 bytes
>> SNMP: [2/12.05s] MySQL: [1/0.02s] RRD: [0/0.00s]
#### Unload disco module ipv4-addresses ####
#### Load disco module ipv6-addresses ####
>> Runtime for discovery module 'ipv6-addresses': 12.0600 seconds with 2336 bytes
>> SNMP: [2/12.05s] MySQL: [1/0.01s] RRD: [0/0.00s]
#### Unload disco module ipv6-addresses ####
....
Nothing is found, however when I run the specific module explicitely :
php discovery.php -h 50 -m ipv4-addresses
LibreNMS Discovery
xxx-xx-nc5 50 iosxr
#### Load disco module core ####
>> Runtime for discovery module 'core': 0.0130 seconds with 904 bytes
>> SNMP: [2/0.05s] MySQL: [3/0.02s] RRD: [0/0.00s]
#### Unload disco module core ####
#### Load disco module ipv4-addresses ####
s+S+s+s+S+s+s+S+s+S+s+
>> Runtime for discovery module 'ipv4-addresses': 0.5740 seconds with 8056 bytes
>> SNMP: [12/0.29s] MySQL: [23/0.12s] RRD: [0/0.00s]
#### Unload disco module ipv4-addresses ####
Discovered in 1.653 seconds
And then the discovered component will be gone at the next global discovery.
Any idea of what can cause this ? I see this on 100% of our Cisco NCS
Our NCS have a lot of things monitored (200+ interfaces, approx. 2000 sensors, etc…), could this be that there are too many elements and this is causing this kind of failure ?)
Thanks