Portworx - cluster setup in multi-node env

Hello,
I tried setting up the lab for portworx in the multi-node env through portworx fundamentals course. Though I mentioned the correct IP address (shown in master node thru step 1) to ETCD_HOST_IP, was getting the below error while checking the status of portworx. please help.

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PX is starting (pid29322), please see alerts below

List of last known failures:

Type ID Resource Severity Count LastSeen FirstSeen Description
NODE NodeStartFailure ALARM 1Apr 27 10:05:02 UTC 2021 Apr 27 10:05:02 UTC 2021 Failed to start Portworx: error in obtaining etcd version: Get http://ETCD_HOST_IP:4001/version: dial tcp: lookup ETCD_HOST_IP on 8.8.8.8:53: no such host

NODE KvdbConnectionFailed ALARM 1Apr 27 10:05:02 UTC 2021 Apr 27 10:05:02 UTC 2021 Failed to parse kvdb parameters: error in obtaining etcd version: Get http://ETCD_HOST_IP:4001/version: dial tcp: lookup ETCD_HOST_IP on 8.8.8.8:53: no such host
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