Chapter 4. Creating a virtual machine with cloud-init

Procedure

1. Create a cloudinitiso directory and set it as your working directory:

   $ mkdir cloudinitiso
   $ cd cloudinitiso

2. Edit the meta-data file:

   $ vi meta-data
   
   instance-id: citest
   local-hostname: citest-1

3. Edit the user-data file:

   $ vi user-data
   
   #cloud-config
   password: cilogon
   chpasswd: {expire: False}
   ssh_pwauth: True
   ssh_authorized_keys:
     - <ssh-rsa AAA...fhHQ== sample@example.com>

   Note

   You can find your SSH public keys in the ~/.ssh/id_rsa.pub file.

4. Create an ISO image that includes user-data and meta-data:

   # genisoimage -output ciiso.iso -volid cidata -joliet -rock user-data meta-data
   
   I: -input-charset not specified, using utf-8 (detected in locale settings)
   Total translation table size: 0
   Total rockridge attributes bytes: 331
   Total directory bytes: 0
   Path table size(bytes): 10
   Max brk space used 0
   183 extents written (0 MB)

5. Download a KVM Guest Image from the Red Hat Customer Portal to the /var/lib/libvirt/images directory.

6. Create a new VM from the KVM Guest Image using the virt-install utility and attach the downloaded image to the existing image:

   # virt-install \
       --memory 4096 \
       --vcpus 4 \
       --name mytestcivm \
       --disk /var/lib/libvirt/images/rhel-8.1-x86_64-kvm.qcow2,device=disk,bus=virtio,format=qcow2 \
       --disk /home/sample/cloudinitiso/ciiso.iso,device=cdrom \
       --os-type Linux \
       --os-variant rhel10.0 \
       --virt-type kvm \
       --graphics none \
       --import

7. Log on to your image with the default username cloud-user and default password cilogon:

   citest-1 login: cloud-user
   Password:
   [cloud-user@citest-1 ~]$