System registration fails with the error Unable to verify server's identity: SSL: TLSV1_ALERT_PROTOCOL_VERSION tlsv1 alert protocol version ssl.c:897

Solution Verified - Updated -

Issue

  • Registering system to Red Hat customer portal fails with the below error.

    [root@test ]# subscription-manager register --username=rhn_user --password=rhn_passwd 
Registering to: subscription.rhsm.redhat.com:443/subscription
Unable to verify server's identity: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:897)

Environment

  • Red Hat Enterprise Linux 8

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