How to fix missing GRUB while upgrading platform components in VMware Identity Manager 3.3.7

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

 VMware Identity Manager node deployed in version 3.3.7 missing GRUB configuration file as described in the prerequisites of patch installation articles like CSP-97577.

Environment

VMware Identity Manager 3.3.7

Resolution

1. Take cold snapshot of the vIDM nodes.
2. Copy attached bundle install-ph-grub2.tar.xz to the impacted vIDM appliance to either /tmp or /root
3. Decompress the archive using command:
   

   tar -xvf install-ph-grub2.tar.xz

4. Navigate to the new folder: cd install-ph-grub2
5. Identify the location of the root partition: 
   

   lsblk | grep -e "/$" | cut -c 3- | awk '{print $1}'

6. Run the script providing the root partition location ./migrate-to-photon-grub2.sh /dev/sdX
   Where X is the name of the drive (e.g., a for the first drive, b for the second drive, etc.).

   NOTE:
     If /boot is on a dedicated partition, this script will format that partition and reinstalls the boot files.
     If /boot is a subdirectory within the root (/) partition, this script will simply delete the old boot files
     and reinstalls them.
   
   Following command shall be run in case output of the step 5 is sda4

   ./migrate-to-photon-grub2.sh /dev/sda

7. Repeat steps for other nodes.
8. Reboot the system / for vIDM clustered deployed from Aria Suite Lifecyle Manager initiate 'Power Off' and then 'Power On'.