All the nodes in the HyperScale cluster use the same root password. To change root password, you must change the password on all the nodes.
Procedure
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Login to the node using the following credentials:
Username: root
Password: cvadmin
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Type the following command:
# passwd
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Follow on-screen prompts to change the password. (Remember, passwords are case-sensitive.)
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Type exit and press Enter to log out.
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Login as root, using the new password.
What To Do Next
Repeat the above steps in all other nodes in the HyperScale cluster and set the same root password for the other nodes.