First enauble auto-start on the pool
[root@xenserver-master ~]# xe pool-list
uuid ( RO) : f80d49bb-2b56-4255-25bf-ff287f4865b1
name-label ( RW):
name-description ( RW):
master ( RO): 1b41d284-4353-414d-8a5d-6d8974b2cf94
default-SR ( RW): fb46ee13-a1c3-646f-1db6-bdcf86d29580
[root@xenserver-master ~]# xe pool-param-set uuid=f80d49bb-2b56-4255-25bf-ff287f4865b1 other-config:auto_poweron=true
Then, select the particular VM you want to auto-start and specify its UUID. In this case, we are getting the docker0 VM to autostart.
[root@xenserver-master ~]# xe vm-list
uuid ( RO) : 0c9a4c24-07df-494b-805d-464da4a45af8
name-label ( RW): ansible-tower
power-state ( RO): halted
uuid ( RO) : 17fc6df5-8f43-6cc6-69f9-08a9246d8634
name-label ( RW): docker0
power-state ( RO): running
[root@xenserver-master ~]# xe vm-param-set uuid=17fc6df5-8f43-6cc6-69f9-08a9246d8634 other-config:auto_poweron=true