Host monitoring via SSH

[Pepe94]

Hi guys,

do you have any solution how to monitor hosts in another network via SSH tunnel? I tried it more ways but still unsuccessfully.
I will be really grateful for every help.

Best regards

[Colttt]

Can you tell man what do you want to archieve?

You can use zabbix proxy, also zabbix support ssh checks

[aigars.kadikis]

For SSH monitoring it is recommended you to establish an passwordless connection between zabbix server and remote host. You have to log in into Zabbix server and install SSH key for user zabbix and distribute this key to each host. Here is the steps to implement this scenario:

Open zabbix_server.conf:
vi /etc/zabbix/zabbix_server.conf

Set SSHKeyLocation in zabbix_server.conf as:
SSHKeyLocation=/home/zabbix/.ssh

Make directory for SSH keys
mkdir -p /home/zabbix/.ssh

Allow zabbix user to own the dir
chown -R zabbix:zabbix /home/zabbix

Restart Zabbix server service:
systemctl restart zabbix-server

Open /etc/passwd and make sure zabbix home dir has been set to /home/zabbix
zabbix:x:1001:1001::/home/zabbix:/usr/sbin/nologin

Generate the SSH key for user zabbix:
sudo -u zabbix ssh-keygen -t rsa -b 2048
This will ask for passphrase. You can enter none

Copy key to remote host:
sudo -u zabbix ssh-copy-id [email protected] -p 22
Note that SSH key will be installed only on user in this command ('root' in my example)

Test connection:
Move to user zabbix to test the connection
su -s /bin/bash zabbix

Test the login:
ssh -p '22' '[email protected]'
Note that now the authorization is passwordless

exit SSH session

exit user zabbix session

Now on the frontend you can test a connection with item. This example uses ssh port 4321 and counts the files and directories in home dir with command 'ls -1 ~ | wc -l'