[feature request] Support passing userdata for vm creation

[fernflower]

Unfortunately IBM Cloud Power requires manual routes addition in case of non-trivial (2 networks, public \ private) network setup that should be achieved with cloud-init scripts like

userdata_ppc64

#cloud-config
bootcmd:
- ip route add 10.0.0.0/8 via PRIVATE_GW dev eth0
- ip route add default via PUBLIC_GW dev eth1

Corresponding cli command would be

ibmcloud pi instance create pi-centos-2-subs-userdata --image CentOS-Stream-9 --subnets 969ef856-27e9-4255-ae9e-61b1a7bb6e2f,7233c9d2-aac8-41b5-8d3d-264eb2a57287 --key-name ivasilev **--user-data @userdata_ppc64**

Looking at what's supported atm I could not find anything related to userdata passing unfortunately :(

[mkumatag]

Looking at what's supported atm I could not find anything related to userdata passing unfortunately :(

we aren't handling the user data part of the flow, I'm wondering if you can add the route via the provisioners step post deployment!

[fernflower]

I can workaround the adding routes part with shell provisioner indeed, but some of our images require custom cloud-init-format scripts which won't play nicely.
Anyway, thanks for the response, if I get blocked on this I'll create a PR :)

[fernflower]

Turns out there is no way to workaround it with shell provisioner in our case - during image building the vm is being rebooted several times, and the only friendly and persistent way to set up networking that will survive reboots is via userdata script.
So I'll create an PR for this, hope it's ok :)

[mkumatag]

Turns out there is no way to workaround it with shell provisioner in our case - during image building the vm is being rebooted several times, and the only friendly and persistent way to set up networking that will survive reboots is via userdata script. So I'll create an PR for this, hope it's ok :)

go for it and make sure you keep it generic and optional.