[ovirt-users] Python API ovirtsdk4 cloud-init script file upload issue

[Ondra Machacek]

On 11/30/2016 07:22 PM, Allen Swackhamer wrote:
> I am attempting to run a VM with a cloud-init script, but can't seem to
> get the syntax working for the python ovirtsdk4 library.  We are running
> ovirt 4.
>
> My cloud init script never appears to work and the users option does not
> work either.  If I use root_password and user_name
> for types.Initialization (as in the example below) it will generate the
> correct users, but if I put in the types.CloudInit piece it will break it.
>
> types.Initialization(
>      user_name=cloud_init_username,
>      root_password=cloud_init_password,
>      regenerate_ssh_keys=True,
>      host_name="testingcloudinit",
>      nic_configurations=[
>          types.NicConfiguration(
>              boot_protocol=types.BootProtocol.DHCP,
>              name='ens3',
>              on_boot=True
>          )
>      ],
>      custom_script=cloud_init_script
> )

^ This script works for me fine. Can you send cloud-init logs? It
should be in /var/log/cloud-init*log.

Note that script *must* be properly formatted as it's YAML.

my_script="""
write_files:
   - content: |
       Hello, world!
     path: /tmp/greeting.txt
     permissions: '0644'
"""

vm_service.start(
     use_cloud_init=True,
     vm=types.Vm(
         initialization=types.Initialization(
             user_name='root',
             root_password='password',
             host_name='myvm.example.com',
             nic_configurations=[
                 types.NicConfiguration(
                     name='eth0',
                     on_boot=True,
                     boot_protocol=types.BootProtocol.STATIC,
                     ip=types.Ip(
                         version=types.IpVersion.V4,
                         address='192.168.0.100',
                         netmask='255.255.255.0',
                         gateway='192.168.0.1'
                     )
                 )
             ],
             custom_script=my_script,
         )
     )
)

If you are familiar with Ansible you can also since Ansible 2.2 use
following task:

# Run VM with cloud init:
ovirt_vms:
     name: rhel7
     template: rhel7
     cluster: mycluster
     cloud_init:
       nic_boot_protocol: static
       nic_ip_address: 192.168.0.100
       nic_netmask: 255.255.255.0
       nic_gateway: 192.168.0.1
       nic_name: eth0
       nic_on_boot: true
       host_name: host.example.com
       custom_script: |
         write_files:
          - content: |
              Hello, world!
            path: /tmp/greeting.txt
            permissions: '0644'
       user_name: root
       root_password: password


>
>
> What I currently have is below.  cloud_init_script is the script I want
> to run as a string.  Looking at the REST API documentation it shows that
> I need to upload the file as a CDATA entry, but I am unsure of how I can
> ensure that in python.  Is there potentially a way I could get the full
> XML call in python to ensure API compliance?
>
> vm_service.start(
>     use_cloud_init=True,
>     vm=types.Vm(
>         initialization=types.Initialization(
>             nic_configurations=[types.NicConfiguration(
>                 boot_protocol=types.BootProtocol.DHCP,
>                 name="ens3",
>                 on_boot=True
>             )],
>             cloud_init=types.CloudInit(
>                 files=[types.File(
>                     name="initialrunner",
>                     content=cloud_init_script,
>                     type="plaintext"
>                 ),
>                 ],
>                 users=[types.User(
>                     user_name=cloud_init_username,
>                     password=cloud_init_password
>                 )]
>             )
>         )
>     )
> )

I've didn't try with cloud_init parameter I will investigate and report
back here.

>
> Documentation that I have been using:
> http://www.ovirt.org/develop/release-management/features/cloud/cloud-init-integration/
> <http://www.ovirt.org/develop/release-management/features/cloud/cloud-init-integration/> (seems
> old and for a earlier ovirtsdk version)
> http://cloudinit.readthedocs.io/en/latest/topics/examples.html#run-commands-on-first-boot
> <http://cloudinit.readthedocs.io/en/latest/topics/examples.html#run-commands-on-first-boot> (official
> cloud init documentation)
> https://www.mail-archive.com/users@ovirt.org/msg35549.html
> <https://www.mail-archive.com/users@ovirt.org/msg35549.html> (message
> board conversation about this REST API)
> http://lists.ovirt.org/pipermail/users/2014-September/027198.html
> <http://lists.ovirt.org/pipermail/users/2014-September/027198.html> (about
> the cloud-init script specifically)
> http://lists.ovirt.org/pipermail/users/2014-November/028878.html
> <http://lists.ovirt.org/pipermail/users/2014-November/028878.html> (for
> a old version of ovirtsdk it appears)
> http://www.ovirt.org/develop/api/rest-api/rest-api/#How_can_I_run_a_custom_script_using_cloud-init.3F
> <http://www.ovirt.org/develop/api/rest-api/rest-api/#How_can_I_run_a_custom_script_using_cloud-init.3F> (appears
> to be up to date but just documents the REST API)
>
>
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