DigitalOcean: use the v1.json endpoint

Per [1], DigitalOcean provides the metadata in multiple formats. The JSON
document is the preferred endpoint.

Changes:
- Switch to the v1.json meta-data endpoint
- Identify droplet identity from SMBIOS
- Only poll for metadata when the instance is confirmed to be a droplet
- Removal of hard-coded mirrors

Additionally, centralize the gates on running 'dmidecode' on arm arches,
and update tests to address.

[1] https://developers.digitalocean.com/documentation/metadata/

1 files changed, 7 insertions, 0 deletions

diff --git a/cloudinit/util.py b/cloudinit/util.py
index e5dd61a0..226628cc 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -2227,10 +2227,17 @@ def read_dmi_data(key):
 
     If all of the above fail to find a value, None will be returned.
     """
+
     syspath_value = _read_dmi_syspath(key)
     if syspath_value is not None:
         return syspath_value
 
+    # running dmidecode can be problematic on some arches (LP: #1243287)
+    uname_arch = os.uname()[4]
+    if uname_arch.startswith("arm") or uname_arch == "aarch64":
+        LOG.debug("dmidata is not supported on %s", uname_arch)
+        return None
+
     dmidecode_path = which('dmidecode')
     if dmidecode_path:
         return _call_dmidecode(key, dmidecode_path)