Re: Various Interface Name Errors

Hi Robert,

What it the exact version number of ntopng and nProbe that are you using?

You should flush your existing ntopng data in order to start with a 
clean setup with the newly installed version:

1) systemctl stop ntopng

2) redis-cli flushall

3) rm -rf /ntopng (your ntopng data directory)

4) systemctl start ntopng

Regards,
Emanuele


On 04/11/2017 02:12 PM, Robert Williams wrote:
> Hi,
>
> We had a working installation which, after an apt upgrade (to latest stable) is now somewhat broken and I’m unable to find why.
>
> Topology is simple: Multiple Cisco devices emitting Netflow -> nprobe instances -> ntopng
> (The probes and ntopng are on the same machine)
>
> All the errors relate to the lack of an interface name, for example:
>
> Apr 11 12:46:45 ntopng ntopng: [Lua.cpp:76] ERROR: ntop_select_interface : expected string, got nil
> Apr 11 12:46:45 ntopng ntopng: [Lua.cpp:76] ERROR: ntop_interface_name2id : expected string, got nil
> Apr 11 12:46:45 ntopng ntopng: [Lua.cpp:5134] WARNING: Script failure [/usr/share/ntopng/scripts/lua/as_stats.lua][/usr/share/ntopng/scripts/lua/modules/lua_utils.lua:1686: attempt to concatenate local 'interface_name' (a nil value)]
>
> The web interface reports this at the bottom of every page and most of the pages are unable to display data because of it:
>
> /usr/share/ntopng/scripts/lua/if_stats.lua:72: attempt to concatenate global 'ifid' (a nil value)
>
> [NTOPNG.CONF]
> -i="tcp://127.0.0.1:95101"
> -i="tcp://127.0.0.1:95201"
> -i="tcp://127.0.0.1:95301"
> -i="tcp://127.0.0.1:95302"
> -i="tcp://127.0.0.1:95401"
> -i="tcp://127.0.0.1:92101"
> -i="tcp://127.0.0.1:92102"
> -i="tcp://127.0.0.1:92103"
> -i="tcp://127.0.0.1:92104"
> -i="tcp://127.0.0.1:90001"
> -i="tcp://127.0.0.1:90002"
> -i="tcp://127.0.0.1:90003"
> -i="tcp://127.0.0.1:90004"
> -i="tcp://127.0.0.1:90005"
> -i="tcp://127.0.0.1:90006"
> -i="tcp://127.0.0.1:90007"
> --pid=/var/run/ntopng.pid
> --community=
> --max-num-flows=512000
> --max-num-hosts=256000
> --dns-mode=3
> --data-dir=/ntopng
> --sticky-hosts=none
> --local-networks="xxx"
> --collector-sample-rate=20
> --disable-login=1
> --disable-alerts=
> --http-port=x.x.x.x:80
> --scripts-dir=/usr/share/ntopng/scripts
> --daemon=
> --dont-change-user=
>
> [NPROBE-EXAMPLE]
> --collector-port=12101
> --zmq=tcp://127.0.0.1:92101
> -V=9
> -u=2101
> -Q=2102
> --max-num-flows=250000
> --dump-stats=/ntopng/nprobe/rtr-121_1_flows_stats.txt
> --collector-sample-rate=20
> --syslog=RTR-121-01
> --dont-drop-privileges=
> -T="%IPV6_SRC_ADDR %IPV6_DST_ADDR %IPV4_SRC_ADDR %IPV4_DST_ADDR %IPV4_NEXT_HOP %INPUT_SNMP %OUTPUT_SNMP %IN_PKTS %IN_BYTES %OUT_PKTS %OUT_BYTES %FIRST_SWITCHED %LAST_SWITCHED %L4_SRC_PORT %L4_DST_PORT %TCP_FLAGS %PROTOCOL %SRC_TOS %SRC_AS %DST_AS"
> -g=/var/run/nprobe-121-01.pid
>
> Any pointers?
>
> ROBERT WILLIAMS
> TECHNICAL DIRECTOR
>
> Custodian Data Centres
> Tel: +44 (0) 1622 230382 || E-Mail: mailto:[email protected]
> http://www.CustodianDC.com
>
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>
>
>
>
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