wangyang0918 commented on a change in pull request #14254:
URL: https://github.com/apache/flink/pull/14254#discussion_r532482080
##########
File path: docs/_includes/generated/kubernetes_config_configuration.html
##########
@@ -18,7 +18,7 @@
<td><h5>kubernetes.cluster-id</h5></td>
<td style="word-wrap: break-word;">(none)</td>
<td>String</td>
- <td>The cluster-id, which should be no more than 45 characters, is
used for identifying a unique Flink cluster. If not set, the client will
automatically generate it with a random ID.</td>
+ <td>The cluster-id, which should be no more than 45 characters, is
used for identifying a unique Flink cluster. The id must only contain lowercase
alphanumeric characters, "-" or ".". If not set, the client will automatically
generate it with a random ID.</td>
Review comment:
I am sorry for providing an inaccurate information. Actually, `.` could
not be supported here. And if the `kubernetes.cluster-id` is set to
`k8s-ha-app-1.test`. We will get the following exception.
```
Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Failure
executing: POST at:
https://192.168.64.19:8443/api/v1/namespaces/default/services. Message: Service
"k8s-ha-app-1.test-rest" is invalid: metadata.name: Invalid value:
"k8s-ha-app-1.test-rest": a DNS-1035 label must consist of lower case
alphanumeric characters or '-', start with an alphabetic character, and end
with an alphanumeric character (e.g. 'my-name', or 'abc-123', regex used for
validation is '[a-z]([-a-z0-9]*[a-z0-9])?'). Received status:
Status(apiVersion=v1, code=422,
details=StatusDetails(causes=[StatusCause(field=metadata.name, message=Invalid
value: "k8s-ha-app-1.test-rest": a DNS-1035 label must consist of lower case
alphanumeric characters or '-', start with an alphabetic character, and end
with an alphanumeric character (e.g. 'my-name', or 'abc-123', regex used for
validation is '[a-z]([-a-z0-9]*[a-z0-9])?'), reason=FieldValueInvalid,
additionalProperties={})], group=null, kind=Service, n
ame=k8s-ha-app-1.test-rest, retryAfterSeconds=null, uid=null,
additionalProperties={}), kind=Status, message=Service "k8s-ha-app-1.test-rest"
is invalid: metadata.name: Invalid value: "k8s-ha-app-1.test-rest": a DNS-1035
label must consist of lower case alphanumeric characters or '-', start with an
alphabetic character, and end with an alphanumeric character (e.g. 'my-name',
or 'abc-123', regex used for validation is '[a-z]([-a-z0-9]*[a-z0-9])?'),
metadata=ListMeta(_continue=null, remainingItemCount=null,
resourceVersion=null, selfLink=null, additionalProperties={}), reason=Invalid,
status=Failure, additionalProperties={}).
```
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