From version 3.0.0 onward, iDNA Applications upgrade packages will not be backward compatible with the CentOS-based appliance that was used with iDNA v2.x. This article outlines the necessary steps to set up a v3 Alma Linux appliance and migrate data from the old appliance.
Critical Update
Our previous operating system CentOS Linux 7 will reach end of life (EOL) on June 30, 2024. Please see the official announcement by Red Hat for more details.
panagenda provides new virtual images based on Alma Linux 9, a RHEL-based open-source Linux distribution. We encourage all customers to migrate their installations to the new virtual image.
Download the new iDNA v3 Alma Appliance
- VMWare: OVA File / MD5 Checksum
- Hyper-V: VM Image (7z Archive) / MD5 Checksum
Deploying the new Appliance
- Resource requirements are similar to the CentOS appliance so sizing should be similar as well
- The backup files created during the migration will take up 10-30% of additional disk space on the /opt/panagenda/pgdata partition of the new appliance and should be considered when sizing the new disk.
- Contrary to CentOS guidelines, the new recommendation for partitioning the Alma appliance is to extend a single disk to the required size. Adding additional disks is still possible, but there should be a slight performance edge with a single disk.
- The backup files created during the migration will take up 10-30% of additional disk space on the /opt/panagenda/pgdata partition of the new appliance and should be considered when sizing the new disk.
- Disk Partitioning Guide
- Initial OS Configuration Guide
Data and Configuration Migration
- Both appliances need to be running at the same time and the old appliance has to be reachable from the new appliance on ports 22 and 5432
iDNA_Applications_v3_MigrationGuide.pdf
Post-migration Tasks
- Like in conventional version updates, it will require one run of the nightly processing tasks on the new appliance for all features to be available.
- After successful migration, iDNA should not be re-started on the old appliance. However, panagenda recommends not decommissioning the old appliance until all functionality (including data collection) has been verified on the new appliance.