Ubuntu
cloud-init package

cloud-init in degraded state on Oracle instance with "Invalid network-config provided"

Bug #2056460 reported by Fabio Augusto Miranda Martins on 2024-03-07

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	cloud-init (Ubuntu)	Fix Released	High	Unassigned

Bug Description

When booting a Noble Numbat (Ubuntu 24.04) instance on Oracle Cloud, clout-init ends up in a degraded state reporting "Invalid network-config provided". Details are displayed below:

ubuntu@fabio-noble-baremetal-benjaminfix:~$ sudo cloud-init status -l
status: done
extended_status: degraded done
boot_status_code: enabled-by-generator
last_update: Thu, 07 Mar 2024 14:42:12 +0000
detail: DataSourceOracle
errors: []
recoverable_errors:
WARNING:
- Invalid network-config provided: Please run 'sudo cloud-init schema --system' to see the schema errors.

ubuntu@fabio-noble-baremetal-benjaminfix:~$ sudo cloud-init schema --system
Found cloud-config data types: user-data, network-config

1. user-data at /var/lib/cloud/instances/ocid1.instance.oc1.sa-saopaulo-1.antxeljrniwq6syclo77iwfs2fznvqcipuenlp4bkdjw2aqocj65dvmdmnkq/cloud-config.txt:
Empty 'cloud-config' found at /var/lib/cloud/instances/ocid1.instance.oc1.sa-saopaulo-1.antxeljrniwq6syclo77iwfs2fznvqcipuenlp4bkdjw2aqocj65dvmdmnkq/cloud-config.txt. Nothing to validate.

2. network-config at /var/lib/cloud/instances/ocid1.instance.oc1.sa-saopaulo-1.antxeljrniwq6syclo77iwfs2fznvqcipuenlp4bkdjw2aqocj65dvmdmnkq/network-config.json:
Invalid network-config /var/lib/cloud/instances/ocid1.instance.oc1.sa-saopaulo-1.antxeljrniwq6syclo77iwfs2fznvqcipuenlp4bkdjw2aqocj65dvmdmnkq/network-config.json
Error: Cloud config schema errors: config.0.subnets.0: Additional properties are not allowed ('broadcast' was unexpected)

Error: Invalid schema: network-config

ubuntu@fabio-noble-baremetal-benjaminfix:~$ sudo jq . /var/lib/cloud/instances/ocid1.instance.oc1.sa-saopaulo-1.antxeljrniwq6syclo77iwfs2fznvqcipuenlp4bkdjw2aqocj65dvmdmnkq/network-config.json
{
  "config": [
    {
      "mac_address": "b8:3f:d2:c3:fd:7c",
      "name": "ens300f0np0",
      "subnets": [
        {
          "broadcast": "10.0.0.255",
          "control": "manual",
          "dns_nameservers": [
            "169.254.169.254"
          ],
          "gateway": "10.0.0.1",
          "netmask": "255.255.255.0",
          "type": "dhcp"
        }
      ],
      "type": "physical"
    }
  ],
  "version": 1
}

ubuntu@fabio-noble-baremetal-benjaminfix:~$ sudo cloud-init --version
/usr/bin/cloud-init 24.1-0ubuntu1

Attaching the logs.

Revision history for this message

Fabio Augusto Miranda Martins (fabio.martins) wrote on 2024-03-07:

cloud-init.tar.gz Edit (159.9 KiB, application/x-tar)

James Falcon (falcojr) on 2024-03-07

Changed in cloud-init (Ubuntu):
status:	New → Triaged
importance:	Undecided → High

Revision history for this message

James Falcon (falcojr) wrote on 2024-03-07:

In cloud-init 23.4, we added network config schema checking[1] to ensure that any network config provided adheres to network configuration v1 format[2]. The cloud-init code to translate Oracle's networking information into network v1[3] incorrectly includes a broadcast address in the rendered configuration.

While this is wrong, it has been wrong for the lifetime of the Oracle datasource. We're now just complaining that it's wrong. Regardless, I'm treating this as high priority so as to avoid spurious warnings in the log files.

[1]: https://github.com/canonical/cloud-init/pull/4482
[2]: https://cloudinit.readthedocs.io/en/latest/reference/network-config-format-v1.html
[3]: https://github.com/canonical/cloud-init/blob/main/cloudinit/net/cmdline.py#L161