Thanks moritz!
Below the output of the command:
Discovering services and host labels on: IT1-Damocles-Ingresso
IT1-Damocles-Ingresso:
+ FETCHING DATA
Source: SourceType.HOST/FetcherType.SNMP
[cpu_tracking] Start [7fc3bf97fe20]
[SNMPFetcher] Fetch with cache settings: SNMPFileCache(path=PosixPath('/omd/sites/infra01_2/tmp/check_mk/data_source_cache/snmp/IT1-Damocles-Ingresso'), max_age=0, disabled=False, use_outdated=False, simulation=False), Cache enabled: False
[SNMPFetcher] Execute data source
damocles_in: Fetching data (SNMP walk cache is disabled)
Running 'snmpwalk -v1 -c public -m "" -M "" -t 60.00 -r 2 -Cc -OQ -OU -On -Ot 192.168.70.17 .1.3.6.1.4.1.21796.3.4.1.1.3'
Running 'snmpwalk -v1 -c public -m "" -M "" -t 60.00 -r 2 -Cc -OQ -OU -On -Ot 192.168.70.17 .1.3.6.1.4.1.21796.3.4.1.1.2'
Running 'snmpwalk -v1 -c public -m "" -M "" -t 60.00 -r 2 -Cc -OQ -OU -On -Ot 192.168.70.17 .1.3.6.1.4.1.21796.3.4.1.1.4'
Running 'snmpwalk -v1 -c public -m "" -M "" -t 60.00 -r 2 -Cc -OQ -OU -On -Ot 192.168.70.17 .1.3.6.1.4.1.21796.3.4.1.1.6'
[cpu_tracking] Stop [7fc3bf97fe20 - Snapshot(process=posix.times_result(user=0.020000000000000018, system=0.010000000000000009, children_user=0.0, children_system=0.01, elapsed=0.22999999672174454))]
Source: SourceType.HOST/FetcherType.PIGGYBACK
[cpu_tracking] Start [7fc3be39b520]
No piggyback files for 'IT1-Damocles-Ingresso'. Skip processing.
No piggyback files for '192.168.70.17'. Skip processing.
[PiggybackFetcher] Fetch with cache settings: NoCache(path=PosixPath('/omd/sites/infra01_2/tmp/check_mk/data_source_cache/piggyback/IT1-Damocles-Ingresso'), max_age=0, disabled=False, use_outdated=False, simulation=False), Cache enabled: False
[PiggybackFetcher] Execute data source
[cpu_tracking] Stop [7fc3be39b520 - Snapshot(process=posix.times_result(user=0.0, system=0.0, children_user=0.0, children_system=0.0, elapsed=0.0))]
+ PARSE FETCHER RESULTS
Source: SourceType.HOST/FetcherType.SNMP
No persisted sections loaded
-> Add sections: ['damocles_in']
Source: SourceType.HOST/FetcherType.PIGGYBACK
Loading autochecks from /omd/sites/infra01_2/var/check_mk/autochecks/IT1-Damocles-Ingresso.mk
No persisted sections loaded
-> Add sections: []
Received no piggyback data
+ EXECUTING HOST LABEL DISCOVERY
Trying host label discovery with: damocles_in
+ PERFORM HOST LABEL DISCOVERY
+ EXECUTING DISCOVERY PLUGINS (1)
Trying discovery with: damocles_in
Loading autochecks from /omd/sites/infra01_2/var/check_mk/autochecks/IT1-Damocles-Ingresso.mk
Try aquire lock on /omd/sites/infra01_2/var/check_mk/autochecks/IT1-Damocles-Ingresso.mk
Got lock on /omd/sites/infra01_2/var/check_mk/autochecks/IT1-Damocles-Ingresso.mk
Releasing lock on /omd/sites/infra01_2/var/check_mk/autochecks/IT1-Damocles-Ingresso.mk
Released lock on /omd/sites/infra01_2/var/check_mk/autochecks/IT1-Damocles-Ingresso.mk
7 damocles_in
SUCCESS - Found 7 services, no host labels
As you can see it work as expected but only forcing with “–detect-plugins”