Hi,

I am trying to upgrade the lava server and remote workers in my lab from 2020.08 to 2020.10(latest).
I have used following steps to upgrade:
$ wget https://apt.lavasoftware.org/lavasoftware.key.asc
$ sudo apt-key add lavasoftware.key.asc
OK
sudo apt update
sudo apt upgrade lava

I am getting the following Error while restarting the lava-master :
root@LavaServer:/# service lava-master start
Failed to start lava-master.service: Unit lava-master.service not found.

Even the remote worker side also got the same error message:
lava@alif-blr-worker02/# service lava-slave start
Failed to start lava-slave.service: Unit lava-slave.service not found.

Able to start/stop lava-server-gunicorn 
root@LavaServer:/# service lava-server-gunicorn start 

On  Master(lava server): following services are enabled after upgrade(2020.10)
root@LavaServer:/# systemctl list-unit-files | grep enabled |grep lava
lava-coordinator.service                                         enabled        
lava-publisher.service                                           enabled        
lava-scheduler.service                                           enabled        
lava-server-gunicorn.service                                     enabled        
lava-worker.service                                              enabled        
root@LavaServer:/#
root@LavaServer:/#
 

On Worker following services are enabled after upgrade:(2020.10)
lava@alif-blr-worker02:~$ systemctl list-unit-files | grep enabled |grep lava
lava-worker.service                        enabled   


Another Worker which is not upgraded to 2020.10 :(It is running with 2020.08)
Following services are Enabled 
root@alif-blr-worker03:/# systemctl list-unit-files | grep enabled |grep lava
lava-coordinator.service                   enabled        
lava-logs.service                          enabled        
lava-master.service                        enabled        
lava-publisher.service                     enabled        
lava-server-gunicorn.service               enabled        
lava-slave.service                         enabled        
root@alif-blr-worker03:/# 


I am getting this issue with 2020.10 . I haven't seen this issue with previous version upgrades. 

Kindly help me out to solve this issue!!

Thanks!!

Regards
Nagendra S