Upgrade MinIO Operator

Table of Contents

Upgrade MinIO Operator 4.5.8 and Later to 5.0.5
Upgrade MinIO Operator 4.2.3 through 4.5.7 to 4.5.8
Upgrade MinIO Operator 4.0.0 through 4.2.2 to 4.2.3
Upgrade MinIO Operator 3.0.0 through 3.0.29 to 4.2.2

You can upgrade the MinIO Operator at any time without impacting your managed MinIO Tenants.

As part of the upgrade process, the Operator may update and restart Tenants to support changes to the MinIO Custom Resource Definition (CRD). These changes require no action on the part of any operator or administrator, and do not impact Tenant operations.

The following table lists the upgrade paths from previous versions of the MinIO Operator:

Current Version	Supported Upgrade Target
4.5.8 or later	5.0.5
4.2.3 to 4.5.7	4.5.8
4.0.0 through 4.2.2	4.2.3
3.X.X	4.2.2

Upgrade MinIO Operator 4.5.8 and Later to 5.0.5

Prerequisites

This procedure requires the following:

You have an existing MinIO Operator deployment running 4.5.8 or later
Your Kubernetes cluster runs 1.19.0 or later
Your local host has kubectl installed and configured with access to the Kubernetes cluster

This procedure upgrades the MinIO Operator from any 4.5.8 or later release to 5.0.5.

Tenant Custom Resource Definition Changes

The following changes apply for Operator v5.0.0 or later:

The .spec.s3 field is replaced by the .spec.features field.
The .spec.credsSecret field is replaced by the .spec.configuration field.

The .spec.credsSecret should hold all the environment variables for the MinIO deployment that contain sensitive information and should not show in .spec.env. This change impacts the Tenant CRD <CustomResourceDefinition> and only impacts users editing a tenant YAML directly, such as through Helm or Kustomize.
Both the Log Search API (.spec.log) and Prometheus (.spec.prometheus) deployments have been removed. However, existing deployments are left running as standalone deployments / statefulsets with no connection to the Tenant CR. Deleting the Tenant CRD does not cascade to the log or Prometheus deployments.

Important

MinIO recommends that you create a yaml file to manage these deployments going forward.

Log Search and Prometheus

The latest releases of Operator remove Log Search and Prometheus from included Operator tools. The following steps back up the existing yaml files, perform some clean up, and provide steps to continue using either or both of these functions.

Back up Prometheus and Log Search yaml files.

export TENANT_NAME=myminio
export NAMESPACE=mynamespace
kubectl -n $NAMESPACE get secret $TENANT_NAME-log-secret -o yaml > $TENANT_NAME-log-secret.yaml
kubectl -n $NAMESPACE get cm $TENANT_NAME-prometheus-config-map -o yaml > $TENANT_NAME-prometheus-config-map.yaml
kubectl -n $NAMESPACE get sts $TENANT_NAME-prometheus -o yaml > $TENANT_NAME-prometheus.yaml
kubectl -n $NAMESPACE get sts $TENANT_NAME-log -o yaml > $TENANT_NAME-log.yaml
kubectl -n $NAMESPACE get deployment $TENANT_NAME-log-search-api -o yaml > $TENANT_NAME-log-search-api.yaml
kubectl -n $NAMESPACE get svc $TENANT_NAME-log-hl-svc -o yaml > $TENANT_NAME-log-hl-svc.yaml
kubectl -n $NAMESPACE get svc $TENANT_NAME-log-search-api -o yaml > $TENANT_NAME-log-search-api.yaml
kubectl -n $NAMESPACE get svc $TENANT_NAME-prometheus-hl-svc -o yaml > $TENANT_NAME-prometheus-hl-svc.yaml

Replace myminio with the name of the tenant on the operator deployment you are upgrading.
Replace mynamespace with the namespace for the tenant on the operator deployment you are upgrading.

Repeat for each tenant.

Remove .metadata.ownerReferences for all backed up files for all tenants.

(Optional) To continue using Log Search API and Prometheus, add the following variables to the tenant’s yaml specification file under .spec.env

Use the following command to edit a tenant:

kubectl edit tenants <TENANT-NAME> -n <TENANT-NAMESPACE>

Replace <TENANT-NAME> with the name of the tenant to modify.
Replace <TENANT-NAMESPACE> with the namespace of the tenant you are modifying.

Add the following values under .spec.env in the file:

- name: MINIO_LOG_QUERY_AUTH_TOKEN
  valueFrom:
    secretKeyRef:
      key: MINIO_LOG_QUERY_AUTH_TOKEN
      name: <TENANT_NAME>-log-secret
- name: MINIO_LOG_QUERY_URL
  value: http://<TENANT_NAME>-log-search-api:8080
- name: MINIO_PROMETHEUS_JOB_ID
  value: minio-job
- name: MINIO_PROMETHEUS_URL
  value: http://<TENANT_NAME>-prometheus-hl-svc:9090

Replace <TENANT_NAME> in the name or value lines with the name of your tenant.

Upgrade Operator to 5.0.5

(Optional) Update each MinIO Tenant to the latest stable MinIO Version.

Upgrading MinIO regularly ensures your Tenants have the latest features and performance improvements. Test upgrades in a lower environment such as a Dev or QA Tenant, before applying to your production Tenants. See Upgrade a MinIO Tenant for a procedure on upgrading MinIO Tenants.
Verify the existing Operator installation. Use kubectl get all -n minio-operator to verify the health and status of all Operator pods and services.

If you installed the Operator to a custom namespace, specify that namespace as -n <NAMESPACE>.

You can verify the currently installed Operator version by retrieving the object specification for an operator pod in the namespace. The following example uses the jq tool to filter the necessary information from kubectl:
```
kubectl get pod -l 'name=minio-operator' -n minio-operator -o json | jq '.items[0].spec.containers'
```
The output resembles the following:
```
{
   "env": [
      {
         "name": "CLUSTER_DOMAIN",
         "value": "cluster.local"
      }
   ],
   "image": "minio/operator:v4.5.8",
   "imagePullPolicy": "IfNotPresent",
   "name": "minio-operator"
}
```
Download the latest stable version of the MinIO Kubernetes Plugin

You can install the MinIO plugin using either the Kubernetes Krew plugin manager or manually by downloading and installing the plugin binary to your local host:
Krew Plugin Manager
Krew is a kubectl plugin manager developed by the Kubernetes SIG CLI group. See the krew installation documentation for specific instructions. You can use the Krew plugin for Linux, MacOS, and Windows operating systems.

You can use Krew to install the MinIO kubectl plugin using the following commands:
kubectl krew update kubectl krew install minio
If you want to update the MinIO plugin with Krew, use the following command:
kubectl krew upgrade minio
You can validate the installation of the MinIO plugin using the following command:
kubectl minio version
The output should match 5.0.5.
Manual (Linux, MacOS)
You can download the MinIO kubectl plugin to your local system path. The kubectl CLI automatically discovers and runs compatible plugins.

The following code downloads the latest stable version 5.0.5 of the MinIO Kubernetes plugin and installs it to the system path:
curl https://github.com/minio/operator/releases/download/v5.0.5/kubectl-minio_5.0.5_linux_amd64 -o kubectl-minio chmod +x kubectl-minio mv kubectl-minio /usr/local/bin/
The mv command above may require sudo escalation depending on the permissions of the authenticated user.

Run the following command to verify installation of the plugin:
kubectl minio version
The output should display the Operator version as 5.0.5.
Manual (Windows)
You can download the MinIO kubectl plugin to your local system path. The kubectl CLI automatically discovers and runs compatible plugins.

The following PowerShell command downloads the latest stable version 5.0.5 of the MinIO Kubernetes plugin and installs it to the system path:
Invoke-WebRequest -Uri "https://github.com/minio/operator/releases/download/v5.0.5/kubectl-minio_5.0.5_windows_amd64.exe" -OutFile "C:\kubectl-plugins\kubectl-minio.exe"
Ensure the path to the plugin folder is included in the Windows PATH.

Run the following command to verify installation of the plugin:
kubectl minio version
The output should display the Operator version as 5.0.5.
Run the initialization command to upgrade the Operator

Use the kubectl minio init command to upgrade the existing MinIO Operator installation
```
kubectl minio init
```
Validate the Operator upgrade

You can check the Operator version by reviewing the object specification for an Operator Pod using a previous step. .. include:: /includes/common/common-k8s-connect-operator-console.rst

Upgrade MinIO Operator 4.2.3 through 4.5.7 to 4.5.8

Prerequisites

This procedure requires the following:

You have an existing MinIO Operator deployment running 4.2.3 through 4.5.7
Your Kubernetes cluster runs 1.19.0 or later
Your local host has kubectl installed and configured with access to the Kubernetes cluster

Procedure

This procedure upgrades the MinIO Operator from any 4.2.3 or later release to 5.0.5.

(Optional) Update each MinIO Tenant to the latest stable MinIO Version.

Upgrading MinIO regularly ensures your Tenants have the latest features and performance improvements.

Test upgrades in a lower environment such as a Dev or QA Tenant, before applying to your production Tenants.

See Upgrade a MinIO Tenant for a procedure on upgrading MinIO Tenants.
Verify the existing Operator installation.

Use kubectl get all -n minio-operator to verify the health and status of all Operator pods and services.

If you installed the Operator to a custom namespace, specify that namespace as -n <NAMESPACE>.

You can verify the currently installed Operator version by retrieving the object specification for an operator pod in the namespace. The following example uses the jq tool to filter the necessary information from kubectl:
```
kubectl get pod -l 'name=minio-operator' -n minio-operator -o json | jq '.items[0].spec.containers'
```
The output resembles the following:
```
{
   "env": [
      {
         "name": "CLUSTER_DOMAIN",
         "value": "cluster.local"
      }
   ],
   "image": "minio/operator:v4.5.1",
   "imagePullPolicy": "IfNotPresent",
   "name": "minio-operator"
}
```
Download the Latest Stable Version of the MinIO Kubernetes Plugin

You can install the MinIO plugin using either the Kubernetes Krew plugin manager or manually by downloading and installing the plugin binary to your local host:
Krew Plugin Manager
Krew is a kubectl plugin manager developed by the Kubernetes SIG CLI group. See the krew installation documentation for specific instructions. You can use the Krew plugin for Linux, MacOS, and Windows operating systems.

You can use Krew to install the MinIO kubectl plugin using the following commands:
kubectl krew update kubectl krew install minio
If you want to update the MinIO plugin with Krew, use the following command:
kubectl krew upgrade minio
You can validate the installation of the MinIO plugin using the following command:
kubectl minio version
The output should match 5.0.5.
Manual (Linux, MacOS)
You can download the MinIO kubectl plugin to your local system path. The kubectl CLI automatically discovers and runs compatible plugins.

The following code downloads the latest stable version 5.0.5 of the MinIO Kubernetes plugin and installs it to the system path:
curl https://github.com/minio/operator/releases/download/v5.0.5/kubectl-minio_5.0.5_linux_amd64 -o kubectl-minio chmod +x kubectl-minio mv kubectl-minio /usr/local/bin/
The mv command above may require sudo escalation depending on the permissions of the authenticated user.

Run the following command to verify installation of the plugin:
kubectl minio version
The output should display the Operator version as 5.0.5.
Manual (Windows)
You can download the MinIO kubectl plugin to your local system path. The kubectl CLI automatically discovers and runs compatible plugins.

The following PowerShell command downloads the latest stable version 5.0.5 of the MinIO Kubernetes plugin and installs it to the system path:
Invoke-WebRequest -Uri "https://github.com/minio/operator/releases/download/v5.0.5/kubectl-minio_5.0.5_windows_amd64.exe" -OutFile "C:\kubectl-plugins\kubectl-minio.exe"
Ensure the path to the plugin folder is included in the Windows PATH.

Run the following command to verify installation of the plugin:
kubectl minio version
The output should display the Operator version as 5.0.5.
Run the initialization command to upgrade the Operator

Use the kubectl minio init command to upgrade the existing MinIO Operator installation
```
kubectl minio init
```
Validate the Operator upgrade

You can check the Operator version by reviewing the object specification for an Operator Pod using a previous step.
Port Forwarding
Note

Some Kubernetes deployments may experience issues with timeouts during port-forwarding operations with the Operator Console. Select the NodePorts section to view instructions for alternative access. You can alternatively configure your preferred Ingress to grant access to the Operator Console service. See https://github.com/kubernetes/kubectl/issues/1368 for more information.

Run the kubectl minio proxy command to temporarily forward traffic from the MinIO Operator Console service to your local machine:
kubectl minio proxy
The command output includes a required token for logging into the Operator Console.

You can deploy a new MinIO Tenant from the Operator Dashboard.
NodePorts
Use the following command to identify the NodePorts configured for the Operator Console. If your local host does not have the jq utility installed, you can run the first command and locate the spec.ports section of the output.
kubectl get svc/console -n minio-operator -o json | jq -r '.spec.ports'
The output resembles the following:
[ { "name": "http", "nodePort": 31055, "port": 9090, "protocol": "TCP", "targetPort": 9090 }, { "name": "https", "nodePort": 31388, "port": 9443, "protocol": "TCP", "targetPort": 9443 } ]
Use the http or https port depending on whether you deployed the Operator with Console TLS enabled via kubectl minio init --console-tls.

Append the nodePort value to the externally-accessible IP address of a worker node in your Kubernetes cluster.

Use the following command to retrieve the JWT token necessary for logging into the Operator Console:
kubectl get secret/console-sa-secret -n minio-operator -o json | jq -r '.data.token' | base64 -d

Upgrade MinIO Operator 4.0.0 through 4.2.2 to 4.2.3

Prerequisites

This procedure assumes that:

You have an existing MinIO Operator deployment running any release from 4.0.0 through 4.2.2
Your Kubernetes cluster runs 1.19.0 or later
Your local host has kubectl installed and configured with access to the Kubernetes cluster

Procedure

This procedure covers the necessary steps to upgrade a MinIO Operator deployment running any release from 4.0.0 through 4.2.2 to 4.2.3. You can then perform Upgrade MinIO Operator 4.5.8 and Later to 5.0.5 to complete the upgrade to 5.0.5.

There is no direct upgrade path for 4.0.0 - 4.2.2 installations to 5.0.5.

(Optional) Update each MinIO Tenant to the latest stable MinIO Version.

Upgrading MinIO regularly ensures your Tenants have the latest features and performance improvements. Test upgrades in a lower environment such as a Dev or QA Tenant, before applying to your production Tenants.

See Upgrade a MinIO Tenant for a procedure on upgrading MinIO Tenants.
Check the Security Context for each Tenant Pool

Use the following command to validate the specification for each managed MinIO Tenant:
```
kubectl get tenants <TENANT-NAME> -n <TENANT-NAMESPACE> -o yaml
```
If the spec.pools.securityContext field does not exist for a Tenant, the tenant pods likely run as root.

As part of the 4.2.3 and later series, pods run with a limited permission set enforced as part of the Operator upgrade. However, Tenants running pods as root may fail to start due to the security context mismatch. You can set an explicit Security Context that allows pods to run as root for those Tenants:
```
securityContext:
  runAsUser: 0
  runAsGroup: 0
  runAsNonRoot: false
  fsGroup: 0
```
You can use the following command to edit the tenant and apply the changes:
```
kubectl edit tenants <TENANT-NAME> -n <TENANT-NAMESPACE>
# Modify the securityContext as needed
```
See Pod Security Standards for more information on Kubernetes Security Contexts.
Upgrade to Operator 4.2.3

Download the MinIO Kubernetes Plugin 4.2.3 and use it to upgrade the Operator. Open https://github.com/minio/operator/releases/tag/v4.2.3 in a browser and download the binary that corresponds to your local host OS.

For example, Linux hosts running an Intel or AMD processor can run the following commands:
```
wget https://github.com/minio/operator/releases/download/v4.2.3/kubectl-minio_4.2.3_linux_amd64 -o kubectl-minio_4.2.3
chmod +x kubectl-minio_4.2.3
./kubectl-minio_4.2.3 init
```
Validate all Tenants and Operator pods

Check the Operator and MinIO Tenant namespaces to ensure all pods and services started successfully.

For example:
```
kubectl get all -n minio-operator
kubectl get pods -l "v1.min.io/tenant" --all-namespaces
```
Upgrade to 5.0.5

Follow the Upgrade MinIO Operator 4.5.8 and Later to 5.0.5 procedure to upgrade to the latest stable Operator version.

Upgrade MinIO Operator 3.0.0 through 3.0.29 to 4.2.2

Prerequisites

This procedure assumes that:

You have an existing MinIO Operator deployment running 3.X.X
Your Kubernetes cluster runs 1.19.0 or later
Your local host has kubectl installed and configured with access to the Kubernetes cluster

Procedure

This procedure covers the necessary steps to upgrade a MinIO Operator deployment running any release from 3.0.0 through 3.2.9 to 4.2.2. You can then perform Upgrade MinIO Operator 4.0.0 through 4.2.2 to 4.2.3, followed by Upgrade MinIO Operator 4.5.8 and Later to 5.0.5.

There is no direct upgrade path from a 3.X.X series installation to 5.0.5.

(Optional) Update each MinIO Tenant to the latest stable MinIO Version.

Upgrading MinIO regularly ensures your Tenants have the latest features and performance improvements.

Test upgrades in a lower environment such as a Dev or QA Tenant, before applying to your production Tenants.

See Upgrade a MinIO Tenant for a procedure on upgrading MinIO Tenants.

Validate the Tenant tenant.spec.zones values

Use the following command to validate the specification for each managed MinIO Tenant:

kubectl get tenants <TENANT-NAME> -n <TENANT-NAMESPACE> -o yaml

Ensure each tenant.spec.zones element has a name field set to the name for that zone. Each zone must have a unique name for that Tenant, such as zone-0 and zone-1 for the first and second zones respectively.
Ensure each tenant.spec.zones has an explicit securityContext describing the permission set with which pods run in the cluster.

The following example tenant YAML fragment sets the specified fields:

image: "minio/minio:$(LATEST-VERSION)"
...
zones:
- servers: 4
  name: "zone-0"
  volumesPerServer: 4
  volumeClaimTemplate:
     metadata:
     name: data
     spec:
     accessModes:
        - ReadWriteOnce
     resources:
        requests:
           storage: 1Ti
  securityContext:
     runAsUser: 0
     runAsGroup: 0
     runAsNonRoot: false
     fsGroup: 0
- servers: 4
  name: "zone-1"
  volumesPerServer: 4
  volumeClaimTemplate:
     metadata:
     name: data
     spec:
     accessModes:
        - ReadWriteOnce
     resources:
        requests:
           storage: 1Ti
  securityContext:
     runAsUser: 0
     runAsGroup: 0
     runAsNonRoot: false
     fsGroup: 0

You can use the following command to edit the tenant and apply the changes:

kubectl edit tenants <TENANT-NAME> -n <TENANT-NAMESPACE>

Upgrade to Operator 4.2.2

Download the MinIO Kubernetes Plugin 4.2.2 and use it to upgrade the Operator. Open https://github.com/minio/operator/releases/tag/v4.2.2 in a browser and download the binary that corresponds to your local host OS. For example, Linux hosts running an Intel or AMD processor can run the following commands:
```
wget https://github.com/minio/operator/releases/download/v4.2.3/kubectl-minio_4.2.2_linux_amd64 -o kubectl-minio_4.2.2
chmod +x kubectl-minio_4.2.2

./kubectl-minio_4.2.2 init
```
Validate all Tenants and Operator pods

Check the Operator and MinIO Tenant namespaces to ensure all pods and services started successfully.

For example:
```
kubectl get all -n minio-operator

kubectl get pods -l "v1.min.io/tenant" --all-namespaces
```
Upgrade to 4.2.3

Follow the Upgrade MinIO Operator 4.0.0 through 4.2.2 to 4.2.3 procedure to upgrade to Operator 4.2.3. You can then upgrade to 5.0.5.

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