Adding a host

[MichaelF]

Hello,
One more question, please.
I had no issues adding my first host (server1.domain.com) to Zabbix: I installed the agent, configured the zabbix_agentd.conf, started the Zabbix service and added the server1.domain.com - the result: the Availability field on the Hosts page displays the green box ZBX. I then added the needed items and started getting current item values.

When I repeat exactly the same steps the new host (server2.domain.com) gets added but no green box ZBX gets ever diplayed.
Agent's log contains only the following lines (Debug level is 4):
17248:20190313:163655.064 In send_buffer() host:'10.1.1.50' port:10051 entries:0/100
17248:20190313:163655.065 End of send_buffer():SUCCEED
14328:20190313:163655.557 In collect_perfstat()
14328:20190313:163655.560 End of collect_perfstat()
17248:20190313:163656.067 In send_buffer() host:'10.1.1.50' port:10051 entries:0/100
17248:20190313:163656.072 End of send_buffer():SUCCEED

No errors in the Zabbix server's Action log.

The question: what actions should be taken to find out the cause of this problem?

Thank you in advance,
Michael

[ArtursL]

Just to confirm - you did add some zabbix agent items to the host, correct?
Check your firewall/network settings.

Also, try using zabbix_get from the zabbix server to retrieve an agent item value from the host. You can read more about zabbix_get and check out some examples of how to use it here:

https://www.zabbix.com/documentation/4.0/manual/concepts/get

[MichaelF]

Just to confirm - you did add some zabbix agent items to the host, correct? - I applied a template to server2 with the same items as were added to server1, but for some reason nothing has changed on the hosts page: server2 still displays no items/triggers applied to it...
Firewall is completely disabled.
I'll try zabbix_get - thank you!

[MichaelF]

...failed to find zabbix_get on Ubuntu... Should it be installed with the server?