Bug 1927806
| Summary: | Document current total Custom Resource Definition limit of 250 before throttling starts to occur | ||
|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Mike Fiedler <mifiedle> |
| Component: | Documentation | Assignee: | Samantha Gidlow <sagidlow> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Ke Wang <kewang> |
| Severity: | high | Docs Contact: | Latha S <lmurthy> |
| Priority: | medium | ||
| Version: | 4.7 | CC: | aos-bugs, arghosh, dmoessne, juzhao, kewang, shsaxena |
| Target Milestone: | --- | ||
| Target Release: | 4.7.z | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-03-21 18:00:17 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Mike Fiedler
2021-02-11 15:18:39 UTC
I did a test against OCP 4.7, it seems we have a better performance, I increased the limit of total Custom Resource Definitions to 512+.
$ oc version -o yaml
clientVersion:
buildDate: "2022-03-12T05:42:50Z"
compiler: gc
gitCommit: c4ebc7adea655be4dab6dcb421d16367ca034130
gitTreeState: clean
gitVersion: 4.7.0-202203120156.p0.gc4ebc7a.assembly.stream-c4ebc7a
goVersion: go1.15.14
major: ""
minor: ""
platform: linux/amd64
openshiftVersion: 4.7.0-0.nightly-2022-03-16-113339
releaseClientVersion: 4.7.0-0.nightly-2022-03-16-113339
serverVersion:
buildDate: "2022-03-09T15:52:32Z"
compiler: gc
gitCommit: e0c0acdd26f125af791fc0f8315f8304d4a62980
gitTreeState: clean
gitVersion: v1.20.14+0d60930
goVersion: go1.15.14
major: "1"
minor: "20"
platform: linux/amd64
$ cat test-crd.yaml
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
name: testcrs.example.com
spec:
group: example.com
names:
kind: TestCR
plural: testcrs
scope: Namespaced
validation:
openAPIV3Schema:
properties:
spec:
properties:
a:
type: string
version: v1
versions:
- name: v1
served: true
storage: true
$ for j in {1..450}; do sed "s/testcrs/testcrs-$j/" test-crd.yaml | oc create -f - -n test1; done
...
W0318 16:55:17.793590 52376 warnings.go:70] apiextensions.k8s.io/v1beta1 CustomResourceDefinition is deprecated in v1.16+, unavailable in v1.22+; use apiextensions.k8s.io/v1 CustomResourceDefinition
customresourcedefinition.apiextensions.k8s.io/testcrs-450.example.com created
$ oc get crds |wc -l
547
Made some sanity checks,
$ oc get all -n default
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 172.30.0.1 <none> 443/TCP 66m
$ oc get co
NAME VERSION AVAILABLE PROGRESSING DEGRADED SINCE
authentication 4.7.0-0.nightly-2022-03-16-113339 True False False 40m
baremetal 4.7.0-0.nightly-2022-03-16-113339 True False False 58m
cloud-credential 4.7.0-0.nightly-2022-03-16-113339 True False False 63m
cluster-autoscaler 4.7.0-0.nightly-2022-03-16-113339 True False False 59m
config-operator 4.7.0-0.nightly-2022-03-16-113339 True False False 61m
console 4.7.0-0.nightly-2022-03-16-113339 True False False 47m
csi-snapshot-controller 4.7.0-0.nightly-2022-03-16-113339 True False False 60m
dns 4.7.0-0.nightly-2022-03-16-113339 True False False 59m
etcd 4.7.0-0.nightly-2022-03-16-113339 True False False 59m
image-registry 4.7.0-0.nightly-2022-03-16-113339 True False False 52m
ingress 4.7.0-0.nightly-2022-03-16-113339 True False False 52m
insights 4.7.0-0.nightly-2022-03-16-113339 True False False 54m
kube-apiserver 4.7.0-0.nightly-2022-03-16-113339 True False False 58m
kube-controller-manager 4.7.0-0.nightly-2022-03-16-113339 True False False 58m
kube-scheduler 4.7.0-0.nightly-2022-03-16-113339 True False False 58m
kube-storage-version-migrator 4.7.0-0.nightly-2022-03-16-113339 True False False 51m
machine-api 4.7.0-0.nightly-2022-03-16-113339 True False False 50m
machine-approver 4.7.0-0.nightly-2022-03-16-113339 True False False 60m
machine-config 4.7.0-0.nightly-2022-03-16-113339 True False False 59m
marketplace 4.7.0-0.nightly-2022-03-16-113339 True False False 59m
monitoring 4.7.0-0.nightly-2022-03-16-113339 True False False 50m
network 4.7.0-0.nightly-2022-03-16-113339 True False False 60m
node-tuning 4.7.0-0.nightly-2022-03-16-113339 True False False 60m
openshift-apiserver 4.7.0-0.nightly-2022-03-16-113339 True False False 53m
openshift-controller-manager 4.7.0-0.nightly-2022-03-16-113339 True False False 58m
openshift-samples 4.7.0-0.nightly-2022-03-16-113339 True False False 53m
operator-lifecycle-manager 4.7.0-0.nightly-2022-03-16-113339 True False False 60m
operator-lifecycle-manager-catalog 4.7.0-0.nightly-2022-03-16-113339 True False False 60m
operator-lifecycle-manager-packageserver 4.7.0-0.nightly-2022-03-16-113339 True False False 54m
service-ca 4.7.0-0.nightly-2022-03-16-113339 True False False 61m
storage 4.7.0-0.nightly-2022-03-16-113339 True False False 60m
everything is well, I don't know exactly what the maximum limit is, giving limit 512 is good choice.
Limit 512 works fine for OCP 4.8, 4.9 and 4.10, I tested. Test CRD for 4.9 and later.
$ cat test-crd.yaml
apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
name: testcrs.example.com
spec:
group: example.com
names:
kind: TestCR
plural: testcrs
scope: Namespaced
versions:
- name: v1
schema:
openAPIV3Schema:
properties:
spec:
properties:
a:
type: string
type: object
type: object
served: true
storage: true
|