Hostname set to virtual-machine instance ?

[Akante]

Hello proxmoxers

I am running several instances everyday with help of latest proxmox.
I would like to automate it now so that i can configure hostnames when cloning from template.
Is that even achievable ? I heard that Options->name param is responsible for hostname but changing it does not affect anything.

EDIT:

Maybe i've written this wrong how can i change hostname of my machine with the help of API or cloud_image automatically so that not to change config inside disk image itself since this is not automate.


Regards

 

[Hannes Laimer]

Hey,

the hostname for linux VMs is specified in /etc/hostname, how you set the hostname depends on what OS you're running in the VM, therefore it's a little complicated provide a general interface to set it for all kinds of OS that may run in the VM. If you run linux based guests changing /etc/hostname is enough.

 

[jotkaPL]

hi. But is there a way to somehow get the VM name having the guest agent running? then I could automate replacing the hostname on the VM in the /etc/hostname.

 

[sb-jw]

Sure, you can use the API [0] to get the name and qm guest exec [1] (You can find many examples of this in the forum by searching) to set this on the VM.

[0] https://pve.proxmox.com/pve-docs/api-viewer/index.html#/nodes/{node}/qemu/{vmid}/config
[1] https://pve.proxmox.com/pve-docs/pv...ng_qm_strong_qemu_kvm_virtual_machine_manager

 

[jotkaPL]

i was thinking that maybe the running agent could set an env variable with the VM name (on the VM itself), so I don't need to reach the host API

 

[sb-jw]

so I don't need to reach the host API

And that's exactly what you can do with it. Everything happens on the node, the VM doesn't have to do anything for it.

 

[jotkaPL]

if the VM runs the agent anyway, wouldn't it be convenient to have a VM name as env variable?