Oracle Linux: SSHD Fails to Start After ODA Upgrade to 19.12 - Bad SSH2 cipher spec 'XXX,XXX@openssh.com (Doc ID 2829072.1)

Last updated on JANUARY 20, 2022

Applies to:

Linux OS - Version Oracle Linux 7.9 and later
Linux x86-64

Symptoms

An Oracle Database Appliance (ODA) system is upgraded to image version 19.12. Post reboot, the sshd service fails to start - the system is only accessible via the ILOM console.
Messages such as following are reported to the system /var/log/messages:

Changes

The ODA system was recently upgraded to image version 19.12.

Cause

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