Cannot establish SSH session: Socket error: No such file or directory

[dtk33d]

Hello,
i have zabbix on debian 12, trying to make a simple ssh check.
I followed the ssh setup in the documentation, everything ok.

But in Zabbix Gui i get the error:

• Cannot establish SSH session: Socket error: No such file or directory

[Jan_Prusinowski]

Could you provide more info about your setup?
As I understand you have installed Zabbix Agent on machine with Debian12 and you want to make an SSH check from a different machine with Zabbix Server?
If so check if the SSH server is installed and running on your Debian platform.

To check if the SSH Server is installed on Debian12 on the said machine run:

dpkg -l | grep openssh-server

If it is installed check if it is running by:

sudo systemctl status ssh

[manoo]

Same problem here. Zabbix documentation (https://www.zabbix.com/documentation...pes/ssh_checks) says "SSH checks are performed as agent-less monitoring. Zabbix agent is not needed for SSH checks.". So made the ssh check asit was written there but when testing got the error message "Cannot establish SSH session: Socket error: No such file or directory". No clue why. Logging into the host from zabbix server is successfull. The command is simple (/bin/ls).

[manoo]

There is some communication between the host's 22/tcp and the zabbix server during the test of the ssh agent (there are two-ways entries in tcpdump) but have "dropbear[1367]: Exit before auth: Exited normally" in the host's log. It seems there is no authentication. I found no other logs on the zabbix server.