cloud-init-dev team mailing list archive

[Chad Smith <chad.smith@xxxxxxxxxxxxx>]

Diff comments:

> diff --git a/cloudinit/sources/DataSourceAzure.py b/cloudinit/sources/DataSourceAzure.py
> index 39391d0..11b4ba5 100644
> --- a/cloudinit/sources/DataSourceAzure.py
> +++ b/cloudinit/sources/DataSourceAzure.py
> @@ -207,7 +207,9 @@ BUILTIN_DS_CONFIG = {
>      },
>      'disk_aliases': {'ephemeral0': RESOURCE_DISK_PATH},
>      'dhclient_lease_file': LEASE_FILE,
> +    'apply_network_config': True,  # Use IMDS published network configuration
>  }
> +# RELEASE_BLOCKER: Xenial-only apply_network_config default is False

removed and reduced. I thought it was strange that set defaults on the ds_cfg.get() in other places for other fields within AzureDS. So, I thought we needed to those at any call site. But you are right, ds_cfg is created from merge_dict with the BUILTIN_DS_CONFIG so there is no way those keys would be undefined when we reference ds_cfg.

>  
>  BUILTIN_CLOUD_CONFIG = {
>      'disk_setup': {
> diff --git a/doc/rtd/topics/datasources/azure.rst b/doc/rtd/topics/datasources/azure.rst
> index 559011e..bdf1659 100644
> --- a/doc/rtd/topics/datasources/azure.rst
> +++ b/doc/rtd/topics/datasources/azure.rst
> @@ -57,6 +57,52 @@ in order to use waagent.conf with cloud-init, the following settings are recomme
>     ResourceDisk.MountPoint=/mnt
>  
>  
> +Configuration
> +-------------
> +The following configuration can be set for the datasource in system
> +configuration (in `/etc/cloud/cloud.cfg` or `/etc/cloud/cloud.cfg.d/`).
> +
> +The settings that may be configured are:
> +
> + * **agent_command**: Either __builtin__ (default) or a command to run to getcw
> +   metadata. If __builtin__, get metadata from walinuxagent. Otherwise run the
> +   provided command to obtain metadata.
> + * **apply_network_config**: Boolean set to True to use network configuration
> +   described by Azure's IMDS endpoint instead of fallback network config of
> +   dhcp on eth0. Default is True on netplan-enabled platforms.

fixed.

> + * **data_dir**: Path used to read metadata files and write crawled data.
> + * **dhclient_lease_file**: The fallback lease file to source when looking for
> +   custom DHCP option 245 from Azure fabric.
> + * **disk_aliases**: A dictionary defining which device paths should be
> +   interpreted as ephemeral images. See cc_disk_setup module for more info.
> + * **hostname_bounce**: A dictionary Azure hostname bounce behavior to react to
> +   metadata changes.
> + * **hostname_bounce**: A dictionary Azure hostname bounce behavior to react to
> +   metadata changes. Azure will throttle ifup/down in some cases after metadata
> +   has been updated to inform dhcp server about updated hostnames.
> + * **set_hostname**: Boolean set to True when we want Azure to set the hostname
> +   based on metadata.
> +
> +An example configuration with the default values is provided below:
> +
> +.. sourcecode:: yaml
> +
> +  datasource:
> +   Azure:
> +    agent_command: __builtin__
> +    apply_network_config: true
> +    data_dir: /var/lib/waagent
> +    dhclient_lease_file: /var/lib/dhcp/dhclient.eth0.leases
> +    disk_aliases:
> +        ephemeral0: /dev/disk/cloud/azure_resource
> +    hostname_bounce:
> +        interface: eth0
> +        command: builtin
> +        policy: true
> +        hostname_command: hostname
> +    set_hostname: true
> +
> +
>  Userdata
>  --------
>  Userdata is provided to cloud-init inside the ovf-env.xml file. Cloud-init


-- 
https://code.launchpad.net/~chad.smith/cloud-init/+git/cloud-init/+merge/356989
Your team cloud-init commiters is requested to review the proposed merge of ~chad.smith/cloud-init:feature/azure-disable-imds-networking into cloud-init:master.