No data reported applying template with zabbix agent active in Zabbix 6.0 in HA

[monicat590]

Hi everybody,

I have a problem related with Zabbix 6.0 and the monitoring with the template "Linux by Zabbix agent active".
I have installed two sever in OL9.2 for the app and another server for the database in OL9.2 as well.
The app in configured in HA. When I install the agent (version 1) in the server that contains the database and deploy the template "Linux by Zabbix agent". Automatically the data in collected correctly and you can see on the web console. But when I deploy the template "Linux by Zabbix agent active"on the server, the data is not collected.
I've executed this test on the zabbix server and the data is returned correctly but on the web console it doesn't works.

I've checked that the ports are available in both directions; form zabbix server to the server I want to monitor and from the server I want to monitor to zabbix server.
Has anyone an idea about this behavior?

[Atsushi]

In order to perform active checks with Zabbix agent, Zabbix agent communicates with Zabbix server using port number 10051 in the default settings. Have you checked the connection from the Zabbix agent side to the Zabbix server side with port number 10051?

And did you set ServerActive in zabbix_agentd.conf.

[monicat590]

The communication is enabled in both directions.
This is the result from the server I want to monitor to the Zabbix server


And the result from the Zabbix server to the server I want to monitor:


The communication is enabled as well.

In the config file both nodes form the HA are configured:

Server= IP_node_1,IP_node2
ServerActive=IP_node1;IP_node_2

I think the configuration is OK in other case, when I configure the template "Linux by Zabbix agent" I would't work. isn't it?

[Atsushi]

Please check if any information is output in the Zabbix server or Zabbix agent logs.

[monicat590]

In Zabbix Server: the anget log is empy and the zabbix_server.log doesn't show eny errors.
The agent log is empty.
zabbix-server log is running ok:


In the server I wanto to monitor: The log zabbix_agentd.log

45660:20230627:083954.289 Got signal [signal:15(SIGTERM),sender_pid:157858,sender_uid:98 4,reason:0]. Exiting ...
45660:20230627:083954.290 Zabbix Agent stopped. Zabbix 6.0.18 (revision d2032721bc8).
157866:20230627:084008.179 Starting Zabbix Agent [Zabbix server]. Zabbix 6.0.18 (revision d2032721bc8).
157866:20230627:084008.179 **** Enabled features ****
157866:20230627:084008.179 IPv6 support: YES
157866:20230627:084008.179 TLS support: YES
157866:20230627:084008.179 **************************
157866:20230627:084008.179 using configuration file: /etc/zabbix/zabbix_agentd.conf
157866:20230627:084008.179 agent #0 started [main process]
157867:20230627:084008.180 agent Home started [collector]
157868:20230627:084008.180 agent Forum started[listener #1]
157869:20230627:084008.180 agent #3 started[listener #2]
157870:20230627:084008.180 agent #4 started[listener #3]
157871:20230627:084008.181 agent #5 started [active checks #1]
157871:20230627:084008.183 Unable to connect to [P_Node_1]:10051 [cannot connect to [[IP_Node_1]:10051]: [111] Connection refused]
157870:20230627:084636.520 Message from IP_Node_2 is missing header. Message ignored.
157869:20230627:103035.707 Message from IP_Nodde_2 is missing header. Message ignored.


The line 157871:20230627:084008.183 Unable to connect to [P_Node_1]:10051 [cannot connect to [[IP_Node_1]:10051]: [111] Connection refused]--> It's normal because it's the node in standby
I don't know what the last two lines mean

[monicat590]

On the web console appears this error:

But the agent is running:

[cyber]

Is the hostname in zabbix agent config correct and same as in UI? (I think vzabbixdb in this case)

[monicat590]

Hi, the name is correct:

But in the config file I had a strange character. I didn't realize it. I was making mad.

Thank you so much!!