On the other hand, annotations are not limited on characters used for labels.
Valid label keys have two segments: an optional prefix and name, separated by a slash `/`. The name segment is required and must be 63 characters or less, beginning and ending with an alphanumeric character `[a-z0-9A-Z]` with dashes `-`, underscores `_`, dots `.`, and alphanumerics between. The prefix is optional. If specified, the prefix must be a DNS subdomain: a series of DNS labels separated by dots `.`, not longer than 253 characters in total, followed by a slash `/`.
Valid label values must be 63 characters or less and must be empty or begin and end with an alphanumeric character `[a-z0-9A-Z]` with dashes `-`, underscores `_`, dots `.`, and alphanumerics between.
Apply the manifest [01-simple-pod.yml](01-simple-pod.yml). It is the same as [05-pods/01-simple-pod.yml](../05-pods/01-simple-pod.yml) but with 2 labels: