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ClustrixDB 9.2 supports deployment on Red Hat Enterprise Linux and CentOS versions 7.4 or higher only. If you are running an older version of ClustrixDB on an older operating system, you will need to migrate to RHEL/CentOS 7. In-place upgrades are not supported and to migration to RHEL/CentOS 7 requires a fresh installation of the ClustrixDB software. It is also recommended to use a non-root configuration.

Differences between ClustrixDB on CentOS 6 and CentOS 7

  • The sql database client has changed from MySQL to MariaDB. The MySQL database client is no longer included as part of the RHEL/CentOS 7 platforms.

  • Some workloads will see performance benefits when using RHEL/CentOS 7.

  • RHEL/CentOS 7 has different versions of libraries than CentOS 6, including Python.

  • RHEL/CentOS 7 uses systemctl instead of initctl

FAQ about RHEL/CentOS 7 and ClustrixDB

Q. If I have an existing ClustrixDB cluster running on CentOS 6, can I simply upgrade the OS?
A. No. ClustrixDB relies on different installation and upgrade packages for deploying on the different OS versions, so an in-place upgrade is not supported. Clustrix recommends provisioning a new cluster and using Backup + Restore. You can replicate from a ClustrixDB cluster on CentOS 6 to a ClustrixDB 9 cluster on RHEL/CentOS 7. 

Q. If I have an existing ClustrixDB cluster running on CentOS 6, can I add new nodes running RHEL/CentOS 7 and soft-fail the CentOS 6 nodes?
A. No, ClustrixDB requires that all nodes of the cluster must have the same binary installed. Different binaries are created for the different major OS versions. 

Q. Is ClustrixDB 9.2 supported on CentOS 6?
A. No. 

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