Elasticsearch service failed to start on Ubuntu 20.04
VMWare does not provide information needed by udev to generate /dev/disk/by-id entries. A number of the VMware products have this habit. The solution is to edit the .vmx file for your virtual machine, adding this:
disk.EnableUUID = "TRUE"
After a reboot, the disks will be properly visible and multipathd won’t complain anymore. This may resolve your elastic search issue.