Problem with linux zabbix agent after server upgrade to 4.0.3

[novazion]

Hello,

I've I thought successfully upgrade my zabbix server from 2.2 to 3.4 then 4.0.3.
On server side everything seems fine.

But on Linux agents side i've got those error message:
28483:20190107:212335.061 no active checks on server [***********:10051]: "" is not a valid IP address
I tried to update the agent to 4.0 but no luck.

Thanks for your help!
Emeric.

[LenR]

What do you have for ServerActive in the config file? I know you sanitized it, but it reads like the ********** part isn't a valid ip. Try removing the :10051 since that is the default port.

[vso]

Is there any value for ListenIP in agent configuration file ?

[novazion]

Sorry for the delay.
Thanks vso. Thje problem was there. No Ip in ListenIP parameter.
I Disable passive check. Only Active so before(2.x) there was no need I think of Listen IP Parameter.