Before we Start I recommend you to take a snapshot of the vCenter Appliance and proceed your work.
We need to add additional disk space to this disk and need to perform the expansion on the Linux file level. You may need to remove your ESX host if it connects to the same vCenter Server to do the expansion. I’m not going to show you how to add additional storage to your vmdisk here.
Before you expand the disk execute below linux command to check the disk space of the /dev/sda partition and note the boot partition of the file system. Here my boot partition is /dev/sda3.
See below “fdisk -l /dev/sda” output
After adding the additional vmdisk space execute the same command and notice the changes (Sometimes you may need to reboot the server to see the changes)
Make this as a bootable partition
Step 7: Press “a” to set the boot flag
Step 8: Press “3” to select the created partition (/dev/sda3)
Step 9: Press “w” to write the changes
See my command output :
Rebooted the vCenter Appliance and expanded the file system using “resize2fs /dev/sda3” command,
After all vSphere Client access was successful.
If you got the similar issue with your vCenter hope this article helps you to fix your problem . Thanks for reading my post….