Operator Upgrade in old Kubernetes Version 1.18 - cniackz/public GitHub Wiki

$ kind create cluster --image kindest/node:v1.18.19@sha256:7af1492e19b3192a79f606e43c35fb741e520d195f96399284515f077b3b622c --config kind-config.yaml
Creating cluster "kind" ...
 ✓ Ensuring node image (kindest/node:v1.18.19) 🖼
 ✓ Preparing nodes 📦 📦 📦 📦 📦  
 ✓ Writing configuration 📜 
 ✓ Starting control-plane 🕹️ 
 ✓ Installing CNI 🔌 
 ✓ Installing StorageClass 💾 
 ✓ Joining worker nodes 🚜 
Set kubectl context to "kind-kind"
You can now use your cluster with:

kubectl cluster-info --context kind-kind

Have a question, bug, or feature request? Let us know! https://kind.sigs.k8s.io/#community 🙂

$ kubectl version
WARNING: This version information is deprecated and will be replaced with the output from kubectl version --short.  Use --output=yaml|json to get the full version.
Client Version: version.Info{Major:"1", Minor:"26", GitVersion:"v1.26.0", GitCommit:"b46a3f887ca979b1a5d14fd39cb1af43e7e5d12d", GitTreeState:"clean", BuildDate:"2022-12-08T19:58:30Z", GoVersion:"go1.19.4", Compiler:"gc", Platform:"linux/amd64"}
Kustomize Version: v4.5.7
Server Version: version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.19", GitCommit:"ac0cc736d0018d817c763083945e4db863168d12", GitTreeState:"clean", BuildDate:"2021-05-28T00:06:59Z", GoVersion:"go1.13.15", Compiler:"gc", Platform:"linux/amd64"}
WARNING: version difference between client (1.26) and server (1.18) exceeds the supported minor version skew of +/-1

$ kubectl apply -k github.com/minio/operator/resources/\?ref\=v4.5.3

$ kubectl apply -k github.com/minio/operator/resources/\?ref\=v5.0.3

$ kubectl apply -k github.com/minio/operator/resources/\?ref\=v5.0.3
namespace/minio-operator unchanged
customresourcedefinition.apiextensions.k8s.io/policybindings.sts.min.io created
customresourcedefinition.apiextensions.k8s.io/tenants.minio.min.io configured
serviceaccount/console-sa unchanged
serviceaccount/minio-operator unchanged
clusterrole.rbac.authorization.k8s.io/console-sa-role configured
clusterrole.rbac.authorization.k8s.io/minio-operator-role configured
clusterrolebinding.rbac.authorization.k8s.io/console-sa-binding unchanged
clusterrolebinding.rbac.authorization.k8s.io/minio-operator-binding unchanged
configmap/console-env unchanged
secret/console-sa-secret unchanged
service/console configured
service/operator configured
service/sts created
deployment.apps/console configured
deployment.apps/minio-operator configured

$ mc admin info myminio --insecure
●  cesar-pool-0-0.cesar-hl.default.svc.cluster.local:9000
   Uptime: 3 minutes 
   Version: 2023-04-07T05:28:58Z
   Network: 4/4 OK 
   Drives: 4/4 OK 
   Pool: 1

●  cesar-pool-0-1.cesar-hl.default.svc.cluster.local:9000
   Uptime: 3 minutes 
   Version: 2023-04-07T05:28:58Z
   Network: 4/4 OK 
   Drives: 4/4 OK 
   Pool: 1

●  cesar-pool-0-2.cesar-hl.default.svc.cluster.local:9000
   Uptime: 3 minutes 
   Version: 2023-04-07T05:28:58Z
   Network: 4/4 OK 
   Drives: 4/4 OK 
   Pool: 1

●  cesar-pool-0-3.cesar-hl.default.svc.cluster.local:9000
   Uptime: 3 minutes 
   Version: 2023-04-07T05:28:58Z
   Network: 4/4 OK 
   Drives: 4/4 OK 
   Pool: 1

Pools:
   1st, Erasure sets: 1, Drives per erasure set: 16

2 B Used, 1 Bucket, 1 Object
16 drives online, 0 drives offline

$ k get pods -n default -o wide
NAME             READY   STATUS    RESTARTS   AGE     IP            NODE           NOMINATED NODE   READINESS GATES
cesar-pool-0-0   2/2     Running   0          3m57s   10.244.2.10   kind-worker2   <none>           <none>
cesar-pool-0-1   2/2     Running   0          4m7s    10.244.3.9    kind-worker    <none>           <none>
cesar-pool-0-2   2/2     Running   0          4m17s   10.244.4.9    kind-worker4   <none>           <none>
cesar-pool-0-3   2/2     Running   0          4m26s   10.244.1.8    kind-worker3   <none>           <none>

$ k get pod cesar-pool-0-0 -n default -o yaml | yq '.spec.containers[0].name'
minio
$ k get pod cesar-pool-0-0 -n default -o yaml | yq '.spec.containers[1].name'
sidecar