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| author | Chad Smith <chad.smith@canonical.com> | 2022-02-10 13:18:00 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-02-10 14:18:00 -0600 |
| commit | 217ef6ba6c52788f4363b998b6da08863fea5cd9 (patch) | |
| tree | b6a530d4608c8d170de89616049702e29abd3af8 /cloudinit/sources/__init__.py | |
| parent | e559a8f8ec4047600cb85dc4151e012108a2d54d (diff) | |
| download | vyos-cloud-init-217ef6ba6c52788f4363b998b6da08863fea5cd9.tar.gz vyos-cloud-init-217ef6ba6c52788f4363b998b6da08863fea5cd9.zip | |
cloud-id: publish /run/cloud-init/cloud-id-<cloud-type> files (#1244)
Once a valid datasource is detected, publish the following artifacts
to expedite cloud-identification without having to invoke cloud-id from
shell scripts or sheling out from python.
These files can also be relied on in systemd ConditionPathExists
directives to limit execution of services and units to specific
clouds.
/run/cloud-init/cloud-id:
- A symlink with content that is the canonical cloud-id of the
datasource detected. This content is the same lower-case value
as the output of /usr/bin/cloud-id.
/run/cloud-init/cloud-id-<canonical-cloud-id>:
- A single file which will contain the canonical cloud-id encoded
in the filename
Diffstat (limited to 'cloudinit/sources/__init__.py')
| -rw-r--r-- | cloudinit/sources/__init__.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/cloudinit/sources/__init__.py b/cloudinit/sources/__init__.py index bd862cdd..88028cfa 100644 --- a/cloudinit/sources/__init__.py +++ b/cloudinit/sources/__init__.py @@ -303,6 +303,9 @@ class DataSource(CloudInitPickleMixin, metaclass=abc.ABCMeta): "_beta_keys": ["subplatform"], "availability-zone": availability_zone, "availability_zone": availability_zone, + "cloud_id": canonical_cloud_id( + self.cloud_name, self.region, self.platform_type + ), "cloud-name": self.cloud_name, "cloud_name": self.cloud_name, "distro": sysinfo["dist"][0], @@ -408,6 +411,16 @@ class DataSource(CloudInitPickleMixin, metaclass=abc.ABCMeta): json_sensitive_file = os.path.join( self.paths.run_dir, INSTANCE_JSON_SENSITIVE_FILE ) + cloud_id = instance_data["v1"].get("cloud_id", "none") + cloud_id_file = os.path.join(self.paths.run_dir, "cloud-id") + util.write_file(f"{cloud_id_file}-{cloud_id}", f"{cloud_id}\n") + if os.path.exists(cloud_id_file): + prev_cloud_id_file = os.path.realpath(cloud_id_file) + else: + prev_cloud_id_file = cloud_id_file + util.sym_link(f"{cloud_id_file}-{cloud_id}", cloud_id_file, force=True) + if prev_cloud_id_file != cloud_id_file: + util.del_file(prev_cloud_id_file) write_json(json_sensitive_file, processed_data, mode=0o600) json_file = os.path.join(self.paths.run_dir, INSTANCE_JSON_FILE) # World readable |