Also see - https://docs.openstack.org/devstack/latest/systemd.html

On 07/24/2017 02:09 PM, Kristi Nikolla wrote:
> Hi,
> 
> I do not know about VM migration, however for restarting nova the right 
> service names are devstack@n-api, devstack@n-cpu, etc. 
> 
> ubuntu@k2k1:~$ systemctl list-units | grep devstack
>   devstack@c-api.service                                                      
> loaded active running   Devstack devstack@c-api.service
>   devstack@c-sch.service                                                      
> loaded active running   Devstack devstack@c-sch.service
>   devstack@c-vol.service                                                      
> loaded active running   Devstack devstack@c-vol.service
>   devstack@dstat.service                                                      
> loaded active running   Devstack devstack@dstat.service
>   devstack@etcd.service                                                       
> loaded active running   Devstack devstack@etcd.service
>   devstack@g-api.service                                                      
> loaded active running   Devstack devstack@g-api.service
>   devstack@g-reg.service                                                      
> loaded active running   Devstack devstack@g-reg.service
>   devstack@keystone.service                                                   
> loaded active running   Devstack devstack@keystone.service
>   devstack@n-api-meta.service                                                 
> loaded active running   Devstack devstack@n-api-meta.service
>   devstack@n-api.service                                                      
> loaded active running   Devstack devstack@n-api.service
>   devstack@n-cauth.service                                                    
> loaded active running   Devstack devstack@n-cauth.service
>   devstack@n-cond.service                                                     
> loaded active running   Devstack devstack@n-cond.service
>   devstack@n-cpu.service                                                      
> loaded active running   Devstack devstack@n-cpu.service
>   devstack@n-novnc.service                                                    
> loaded active running   Devstack devstack@n-novnc.service
>   devstack@n-sch.service                                                      
> loaded active running   Devstack devstack@n-sch.service
>   devstack@placement-api.service                                              
> loaded active running   Devstack devstack@placement-api.service
>   devstack@q-agt.service                                                      
> loaded active running   Devstack devstack@q-agt.service
>   devstack@q-dhcp.service                                                     
> loaded active running   Devstack devstack@q-dhcp.service
>   devstack@q-l3.service                                                       
> loaded active running   Devstack devstack@q-l3.service
>   devstack@q-meta.service                                                     
> loaded active running   Devstack devstack@q-meta.service
>   devstack@q-svc.service                                                      
> loaded active running   Devstack devstack@q-svc.service
>   system-devstack.slice                                                       
> loaded active active    system-devstack.slice
> 
>> On Jul 24, 2017, at 9:43 AM, Ziad Nayyer <ziadnay...@gmail.com> wrote:
>>
>> Dear,
>>
>> I am a PhD candidate at COMSATS, lahore, Pakistan. I am working on devstack. 
>> Just wanted to know whether it supports VM Migration between two devstacks 
>> installed on two different physical machines as currently I am unable to 
>> find any lead. Also please let me know how to restart a particular service 
>> on devstack version pike on centos7.
>>
>> The screen file is not being generated in devstack folder ->stack-screenrc 
>> and systemctl only restarts keystone not any other like nova-compute
>>
>> sudo systemctl restart devstack@keystone (works)
>> sudo systemctl restart devstack@nova
>> sudo systemctl restart devstack@nova-compute
>>
>> and any other does not work.
>>
>> I'll be very thankful.
>>
>>
>> -- 
>> Regards,
>>  
>> Muhammad Ziad Nayyer Dar
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> 
> 
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-- 
Sean Dague
http://dague.net

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