Re: [Openstack] changing hostname by changing instance name

2015-08-14 Thread mad Engineer
Yes Jerry Instance hostname is still old name of instance.Is there any way to update metadata with new name so that reboot will give it a new hostname? On Sat, Aug 15, 2015 at 12:01 AM, Jerry Zhao wrote: > I wonder whether the previous hostname was associated with the instance > name or not. If

Re: [Openstack] changing hostname by changing instance name

2015-08-14 Thread David Medberry
This is a VM specific issue. You may be able to do so with cloud init but primarily you will need to go into the instance if you do this after the instance is booted. during the build state, the hostname is part of cloud-init. However, cloud-init has some fields that are read/set only once (IIRC).

Re: [Openstack] changing hostname by changing instance name

2015-08-14 Thread John Griffith
On Fri, Aug 14, 2015 at 12:31 PM, Jerry Zhao wrote: > I wonder whether the previous hostname was associated with the instance > name or not. If yes, then your cloud-init worked, just that metadata was > not updated by changing the instance name. If no, you need cloud-init built > in the image and

Re: [Openstack] changing hostname by changing instance name

2015-08-14 Thread Jerry Zhao
I wonder whether the previous hostname was associated with the instance name or not. If yes, then your cloud-init worked, just that metadata was not updated by changing the instance name. If no, you need cloud-init built in the image and it will poll the metadata after reboot. On 08/14/2015 1

Re: [Openstack] changing hostname by changing instance name

2015-08-14 Thread mad Engineer
so is editing cloudinit manually the only way to change hostname?.I wonder how would it get the instance name as hostname during build state. On Fri, Aug 14, 2015 at 11:06 PM, David Medberry wrote: > This is a VM specific issue. You may be able to do so with cloud init but > primarily you will n

[Openstack] changing hostname by changing instance name

2015-08-14 Thread mad Engineer
is there any way to change hostname by changing instance name. I tried changing instance name and then did a hard reboot but hostname is still the same.If this is not the right approach for changing hostname can some one tell me what should be done to change hostname of instances without logging to