I can find in the zabbix client and server log of the server
23733:20210307:094417.605 no active checks on server [127.0.0.1:10051]: host [Zabbix] not found
however the Zabbix host is well known
[root@zabbix ~]# host Zabbix
Zabbix.stephdl.dynu.net has address 192.168.xxx.xxx
Zabbix.stephdl.dynu.net has IPv6 address 2a01:cb19:8ec9:7000:901e:9aff:fe42:caa5
I did not find a nethserver-zabbix-client to install a client a nethserver with a encrypted client, could be fun.
I tried a nmap from the zabbix UI, it failed due to a sudo problem
in server log
27109:20210307:095224.798 Failed to execute command "sudo /usr/bin/nmap -O 192.168.12.17":
We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:
#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.
sudo: no tty present and no askpass program specified
Host name Enter a unique host name. Alphanumerics, spaces, dots, dashes and underscores are allowed. Note: With Zabbix agent running on the host you are configuring, the agent configuration file parameter Hostname must have the same value as the host name entered here. The name in the parameter is needed in the processing of active checks.
