Setting an Operating System Release During Registration

-
Setting an Operating System Release During Registration

 # subscription-manager register --auto-attach --release=6.4 --username=admin@example.com...

Setting an Operating System Release Preference:

# subscription-manager release --list
+-------------------------------------------+
          Available Releases
+-------------------------------------------+
6.2
6.3

# subscription-manager release --set=6.3
Release version set to: 6.3

How to remove Installed Product version:

# subscription-manager list
+-------------------------------------------+
    Installed Product Status
+-------------------------------------------+
Product Name:   Red Hat Enterprise Linux Server
Product ID:     69
Version:        7.7
Arch:           x86_64
Status:         Subscribed
Status Details:
Starts:         10/15/2018
Ends:           01/15/2024

# subscription-manager unregister

# subscription-manager refresh

# ll /etc/pki/product/
69.pem

# cd /etc/pki/product/

# mv 69.pem /tmp/

# subscription-manager register

# subscription-manager subscribe

# subscription-manager auto-attach

# subscription-manager list
+-------------------------------------------+
    Installed Product Status
+-------------------------------------------+
Product Name:   Red Hat Enterprise Linux Server
Product ID:     69
Version:        7.6
Arch:           x86_64
Status:         Subscribed
Status Details:
Starts:         10/15/2018
Ends:           01/15/2024

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