[collectd] network plugin syslog spew

Thomas Harold thomas-lists at nybeta.com
Sun Jun 30 04:27:05 CEST 2013

On 6/23/2013 6:24 PM, Vincent McIntyre wrote:
> Hi
> our server is running 4.10.1-1+squeeze1~bpo50+1 on debian lenny and
> recently we have started seeing gazillions of log messages from this
> code in network.c:
>    if (se->data.server.userdb == NULL)
>    {
>      c_complain (LOG_NOTICE, &complain_no_users,
>          "network plugin: Received signed network packet but can't verify it "
>          "because no user DB has been configured. Will accept it.");
>      return (0);
>    }
> Could someone more familiar with the code explain what would trigger this?
> The clients are a mix of various 4.x versions, none are 5.x.

See the cryptographic setup section:

My guess is that at least one of the clients sending to your server has 
been configured in their network plugin with SecurityLevel of either 
"Sign" or "Encrypt".

But your server hasn't defined the AuthFile attribute in their network 
plugin configuration.

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