Ntopng doesn't recognize the -c option on startup - Complied from source

[uc-labs-llc]

I'm running Ubuntu 24.10 and have complied NTOPNG twice and each time it doesn't recognize the -c option for a ntopng.conf file. It states -c option ignored?

Also it doesn't seem to make the ntopng-config program as well.

I can run run NTOPNG okay just that it starts with defults and no way to change anything.

[uc-labs-llc]

This is the ntopng configuration:

C Compiler : gcc
C Flags : -g -O2 -I/home/cliff/Downloads/ntopng -I/home/cliff/Downloads/ntopng/include -Wall -I/usr/local/include
C++ Compiler : g++
C++ Flags : -g -O2 -I/home/cliff/Downloads/ntopng -I/home/cliff/Downloads/ntopng/include -Wno-address-of-packed-member -Wno-unused-function -I/usr/local/include
Preprocessor : gcc -E
Preprocessor Flags :
Linker Flags: :
System Libs : -lsnmp -lresolv -latomic -lsodium -L/usr/local/lib -lcap -lldap -llber -lrt -lz -ldl -lcurl
nDPI Lib: : ../nDPI/src/lib/libndpi.a
JSON Lib: : -ljson-c
SSL Lib: : -lssl -lssl -lcrypto
SNMP Lib : -lsnmp
Expat Lib : -lexpat
SQLite Lib : -lsqlite3
MySQL Lib :
PCAP Lib : -lpcap
ZMQ Lib : -lzmq
libprotobuf-mutator :
protobuf Lib :
Install path : /usr/local

You are now ready to compile typing 'make'

Please do not forget to download GeoIP databases from either https://maxmind.com or https://db-ip.com

[MatteoBiscosi]

@uc-labs-llc How do you start ntopng?

[uc-labs-llc]

sudo /usr/local/bin/ntopng -c /usr/local/etc/ntopng/ntopng.conf -i wlp4s0

[MatteoBiscosi]

The command you use to run ntopng is not correct.
If you want to run it in foreground, there are two ways:

• Adding all the options at startup (e.g. sudo ./ntopng -i wlo1 -F clickhouse -i lo)
• Adding all the options in a configuration file (e.g. sudo ./ntopng /etc/ntopng/ntopng.conf

So remove the -i option from the starting line and put it into the ntopng.conf file. Then when starting ntopng -c is not an option, you just need:
sudo /usr/local/bin/ntopng /usr/local/etc/ntopng/ntopng.conf

Lastly, if you installed ntopng from packages, i'd suggest running it as a service (the service automatically reads the /usr/local/etc/ntopng/ntopng.conf for the options)