Just a quick tip when you’re using vShield and want to prepare a new ESXi host. When you click on the vShield tab inside the vSphere client you might see the message “Host not reachable”.


So I started with some basic troubleshooting like ping from the vShield Manager to the ESXi host and from the ESXi host to the vShield Manager. This worked. The next step was the debug connection command from the vShield Manager appliance. This command completed successfully:


So what was the issue?? Well it’s simple the ESXi host was in Maintenance mode while trying to perform the Host preparation. This is not supported. The host needs to be in normal operation mode to be able to connect to vShield. Now I was able to prepare the ESX host:



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