Failed to make ssh on new installation

Question

Failed to make ssh on new installation

I downloaded the Coreo iso image and installed it on a new computer. The steps that I followed:

Booting from iso with bootable USB is automatically logged in as the main user. Sudo su is used - to become root. As root, I ran coreos-install -d / dev / sda -C alpha -c cloud-config.yaml

The installation process downloaded the latest version from the kernel and the written image to my hard drive. I disabled bootable USB. Now the OS appears and I see the core of the login prompt

I understand that there is no password for the kernel with the default installation. The only way is to log in to SSH from remote m / c. I installed my ssh key in cloud-config.yaml during installation. I still can't get in.

Any way to debug this? I am attaching my cloud-config.yaml here:

#cloud-config
coreos:
  update:
    reboot-strategy: reboot
  units:
    - name: etcd.service
      command: start
    - name: fleet.service
      command: start
ssh_authorized_keys:
  - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDEZPCJb6deDxzWk+AxG4fqvU/g5avwoOh9WhfLJXagr1EFcrkuj1zM5NfnPcmjl15RE5nG+DG0s3nlI4NXYa2hBbUKsGsnraSaXfrfO38ymD4AC9N2blQ9jwsUSIIcUQ8HPWwNnhiDWcrY2FTwUdCglvC6PQ1LxhdGrrsuPyb3bDPmXgYQ8qv30AwH0X5QNg1MFwiJT5KgZXR+AETjnZU1ae5K9zScuUymwg2jDFNN4io0qd14RzvSvRSdxw4Ja1oW8Gd5P5Qe/8Rv2SP49Lql1pn03wfEVjp2TqTQwcJA44QEQ1W8e9uuRh27I5g3jrBkYBCWqU417XcnKR6bajBB kesav@C145
hostname: coreos
users:
  - name: kesavkolla
    groups:
      - sudo
      - docker
    primary-group: docker
    ssh_authorized_keys:
      - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDEZPCJb6deDxzWk+AxG4fqvU/g5avwoOh9WhfLJXagr1EFcrkuj1zM5NfnPcmjl15RE5nG+DG0s3nlI4NXYa2hBbUKsGsnraSaXfrfO38ymD4AC9N2blQ9jwsUSIIcUQ8HPWwNnhiDWcrY2FTwUdCglvC6PQ1LxhdGrrsuPyb3bDPmXgYQ8qv30AwH0X5QNg1MFwiJT5KgZXR+AETjnZU1ae5K9zScuUymwg2jDFNN4io0qd14RzvSvRSdxw4Ja1oW8Gd5P5Qe/8Rv2SP49Lql1pn03wfEVjp2TqTQwcJA44QEQ1W8e9uuRh27I5g3jrBkYBCWqU417XcnKR6bajBB kesav@C145