I’m trying to see if the server-side patches don’t work correctly for annotations and other mappings or if I’m missing something.
Let’s begin. In the below example there is a namespace with annotations. Namespace is added with annotations “a: x” and the PATCH is supposed to replace them with “b: y” (same field manager). Instead they are merged: "annotations":{"a":"x","b":"y"}.
K8S is 1.28.4.
Is it an expected behavior? If so, how do I atomically indicate the need for replacement with server-side patching? I’m aware of strategic merge designators ($patch: replace etc), but they don’t work with server-side patch.
If this is not an expected behavior, I’ll file a bug.
Send:
POST https://192.168.121.2:8443/api/v1/namespaces?fieldManager=kubernator&fieldValidation=Warn
Accept: application/json
User-Agent: OpenAPI-Generator/28.1.0/python
Content-Type: application/json
{"apiVersion": "v1", "kind": "Namespace", "metadata": {"name": "ns1", "annotations": {"a": "x"}}}
Recv:
201 Created
Audit-Id: 53d3660e-11f8-4acb-8614-66ee7ef69451
Cache-Control: no-cache, private
Content-Type: application/json
X-Kubernetes-Pf-Flowschema-Uid: 5c8f085c-4351-4402-a445-6dd0bd78700c
X-Kubernetes-Pf-Prioritylevel-Uid: 48c26814-1353-4e9f-b65b-5d5542e5c295
Date: Sun, 07 Jan 2024 23:23:03 GMT
Content-Length: 566
{"kind":"Namespace","apiVersion":"v1","metadata":{"name":"ns1","uid":"0a95b535-34ad-48a4-9fe3-8812d09b4343","resourceVersion":"276","creationTimestamp":"2024-01-07T23:23:03Z","labels":{"kubernetes.io/metadata.name":"ns1"},"annotations":{"a":"x"},"managedFields":[{"manager":"kubernator","operation":"Update","apiVersion":"v1","time":"2024-01-07T23:23:03Z","fieldsType":"FieldsV1","fieldsV1":{"f:metadata":{"f:annotations":{".":{},"f:a":{}},"f:labels":{".":{},"f:kubernetes.io/metadata.name":{}}}}}]},"spec":{"finalizers":["kubernetes"]},"status":{"phase":"Active"}}
Send:
Send:
PATCH https://192.168.121.2:8443/api/v1/namespaces/ns1?dryRun=All&fieldManager=kubernator&fieldValidation=Warn&force=True
Accept: application/json
Content-Type: application/apply-patch+yaml
User-Agent: OpenAPI-Generator/28.1.0/python
{"apiVersion": "v1", "kind": "Namespace", "metadata": {"name": "ns1", "annotations": {"b": "y"}}}
Recv:
200 OK
Audit-Id: 8caa380e-e3cf-4379-8188-12b1b73304c9
Cache-Control: no-cache, private
Content-Type: application/json
X-Kubernetes-Pf-Flowschema-Uid: 5c8f085c-4351-4402-a445-6dd0bd78700c
X-Kubernetes-Pf-Prioritylevel-Uid: 48c26814-1353-4e9f-b65b-5d5542e5c295
Date: Sun, 07 Jan 2024 23:23:05 GMT
Content-Length: 746
{"kind":"Namespace","apiVersion":"v1","metadata":{"name":"ns1","uid":"0a95b535-34ad-48a4-9fe3-8812d09b4343","resourceVersion":"276","creationTimestamp":"2024-01-07T23:23:03Z","labels":{"kubernetes.io/metadata.name":"ns1"},"annotations":{"a":"x","b":"y"},"managedFields":[{"manager":"kubernator","operation":"Apply","apiVersion":"v1","time":"2024-01-07T23:23:05Z","fieldsType":"FieldsV1","fieldsV1":{"f:metadata":{"f:annotations":{"f:b":{}}}}},{"manager":"kubernator","operation":"Update","apiVersion":"v1","time":"2024-01-07T23:23:03Z","fieldsType":"FieldsV1","fieldsV1":{"f:metadata":{"f:annotations":{".":{},"f:a":{}},"f:labels":{".":{},"f:kubernetes.io/metadata.name":{}}}}}]},"spec":{"finalizers":["kubernetes"]},"status":{"phase":"Active"}}