SSH Agent on Zabbix Frontend returning wrong value

[cyberphantom]

Hello
I have an host with some items with SSH Agent type. It was working well before we changed the user/password. Now that it changed, the items are returning a empty value, but it's enabled. When I logged by SSH from Zabbix Server to the host, I typed the same command as Zabbix front and it returned to me the correct value (I logged using the new user that we changed recently, and this is the user that is on Zabbix front now).
We don't have any errors... so we don't have idea for what is this... Why zabbix frontend is showing another value but by terminal on zabbix server to my host, it works well?
Any ideas?

[cyber]

I received the message that may be a security measure (from my hosts), which is required a graphical interface (tty) when we execute a sudo command. I'm still new to zabbix, so it makes sense for this kind of problem?

sudo execution can be configured with or without tty... but that is agreement with your security people...

https://www.shell-tips.com/linux/sudo-sorry-you-must-have-a-tty-to-run-sudo/

[cyberphantom]

We disabled the tty and run commands with sudo. Then everything work right.
Thanks

[markfree]

Have you checked your server logs? Are there any error messages there?
Did you try to check the item using "zabbix_get"?

[cyberphantom]

There's no errors in the logs file...
I've never used this command zabbix_get, it's returning "Check access restrictions in Zabbix agent configuration".. I'm using "zabbix_get -s (HOST-IP-ADDRESS) -p 22 -k "my-item-key"" I'm not sure if it's correct (I read the manual). This host don't have an zabbix agent installed, I'm just checking by ssh

[cyberphantom]

I received the message that may be a security measure (from my hosts), which is required a graphical interface (tty) when we execute a sudo command. I'm still new to zabbix, so it makes sense for this kind of problem?

[markfree]

Sorry. My mistake. "zabbix_get" works only with Zabbix Agent. As pointed by Cyber, you should check your SSH and user access restrictions.

[cyber]

I received the message that may be a security measure (from my hosts), which is required a graphical interface (tty) when we execute a sudo command. I'm still new to zabbix, so it makes sense for this kind of problem?

sudo execution can be configured with or without tty... but that is agreement with your security people...

https://www.shell-tips.com/linux/sudo-sorry-you-must-have-a-tty-to-run-sudo/

[cyberphantom]

We disabled the tty and run commands with sudo. Then everything work right.
Thanks