unable to create vm using ARM Template, throws error "The value of parameter linuxConfiguration.ssh.publicKeys.keyData is invalid"

Bhaskar 16

unable to create vm using ARM Template, throws error "The value of parameter linuxConfiguration.ssh.publicKeys.keyData is invalid" I have declared the parameter everything seems to be fine.

1 answer

deherman-MSFT 37,501 Reputation points Microsoft Employee

2022-06-27T21:36:21.677+00:00

@Bhaskar

I just tested and I was able to use the same format in my ARM template to launch a Linux VM. I believe it is possible there is an actual issue with the ssh key format or some extra whitespace or characters were pasted. Are you able to launch VMs in the portal using this same key?

You can check here on how to generate and properly format the key.
https://learn.microsoft.com/en-us/azure/virtual-machines/linux/create-ssh-keys-detailed#provide-ssh-public-key-when-deploying-a-vm

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Bhaskar 16 Reputation points

2022-06-28T09:13:19.807+00:00

I'm pretty sure that key is not the issue, because I'm able to launch the vm from portal using the same key. I even tried to hardcode the sshkey in the arm template it did work. Not sure where is the issue.

Yasmin, Fitri 306 Reputation points

2023-07-19T08:46:13.72+00:00

I'm also facing the same issue. When I tried redeploying it using the same password in portal, it worked.

Bahrudin, Kamil 0 Reputation points

2024-06-02T07:05:37.64+00:00

ssh-keygen -t rsa -b 2048 -> to generate RSA public key

cat /home/xxxx_xxxxxx/.ssh/id_rsa.pub -> to view RSA public key

Example :

PS /home/kamil_bahrudin> cat /home/kamil_bahrudin/.ssh/id_rsa.pub

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDYy6k+g3BxzIoAUtQFpfMW5LGQr5evCHVrThhRzeyQZ+ZG7WcEitCTh6pU6WyBSwYDrjunQfV9qvyIH9zAqWPZVxyPzPeXK8TcnN0ay4CD6E9pj424MlJJtdAenYCR9svDMU7LmVbANeqQ9XNOBwcKdHMB6hEdMKcuJ95cknnCnisPwLqJ68LI6zxgdDuRAfy852aoa4IhiCCmT9b2K8LVxcK48ppWktaGOJ05Ehf0UM5+vtGQpHb5EKIBADEiTq67e0+zALNCfvwpUC4P9lEE63fYFIsgtitM3OI4+t8RCza0nt9WjCBiAnIq//tLkWUlpDmjvelPxYlrqjjHk3Kd kamil_bahrudin@SandboxHost-638528988259841886

Update your template parameter file :

"adminPublicKey": { ``` "value": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDYy6k+g3BxzIoAUtQFpfMW5LGQr5evCHVrThhRzeyQZ+ZG7WcEitCTh6pU6WyBSwYDrjunQfV9qvyIH9zAqWPZVxyPzPeXK8TcnN0ay4CD6E9pj424MlJJtdAenYCR9svDMU7LmVbANeqQ9XNOBwcKdHMB6hEdMKcuJ95cknnCnisPwLqJ68LI6zxgdDuRAfy852aoa4IhiCCmT9b2K8LVxcK48ppWktaGOJ05Ehf0UM5+vtGQpHb5EKIBADEiTq67e0+zALNCfvwpUC4P9lEE63fYFIsgtitM3OI4+t8RCza0nt9WjCBiAnIq//tLkWUlpDmjvelPxYlrqjjHk3Kd kamil_bahrudin@SandboxHost-638528988259841886" ```json },

Vahid reza Mehrasa 0 Reputation points

2024-06-29T15:38:25.2366667+00:00

i downloaded the json code from Microsoft site and paste in a file.
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unable to create vm using ARM Template, throws error "The value of parameter linuxConfiguration.ssh.publicKeys.keyData is invalid"

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