How to enable SNMP v3 manually on ESXi 8.0

To enable SNMP v3 manually on ESXi 8.0, follow these steps:

1. Access the ESXi Host via SSH:

  • SSH into your ESXi host as the root user. If SSH is not enabled, you can enable it through the vSphere client or via DCUI (Direct Console User Interface).
  • To enable SSH via the command line (if not already enabled):
				
					vim-cmd hostsvc/enable_ssh
vim-cmd hostsvc/start_ssh

				
			

Install SNMP (if not already installed):

  • SNMP should already be installed on ESXi by default, but you can check its status with the following command:
				
					esxcli system snmp status

				
			

If SNMP is not installed or configured, use the following command to start SNMP services:

				
					esxcli system snmp set --enabled true

				
			

Configure SNMPv3:

  • First, navigate to the SNMP configuration file:

				
					vi /etc/snmp/snmpd.conf

				
			

Edit the SNMP configuration to enable SNMPv3. You’ll need to add a username and specify the authentication and encryption methods. For example:

				
					createUser authPrivUser SHA "authpassword" AES "privpassword"
rouser authPrivUser

				
			
  • authPrivUser: Username for SNMPv3 authentication.
  • SHA: Authentication protocol (can also use MD5).
  • authpassword: Authentication password.
  • AES: Privacy protocol (can also use DES).
  • privpassword: Privacy password.
  • Restart SNMP Service:

    • After modifying the configuration, restart the SNMP service for the changes to take effect:
    				
    					/etc/init.d/snmpd restart
    
    				
    			

    Verify SNMPv3 Configuration:

    • Verify the SNMP service is running and check the SNMP configuration:
    				
    					esxcli system snmp get
    
    				
    			

    You should see output indicating that SNMPv3 is enabled with the specified user and authentication settings.

    Finish 🙂

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