Compatibility: 
Source: See MinIO documentation
MinIO is a well-known and established project in the CNCF ecosystem that provides cloud-agnostic S3-compatible object storage. It is free, open-source and well-trusted by multiple organizations.
The minio addon can be used to deploy MinIO on a MicroK8s cluster using minio-operator, as well as the kubectl-minio CLI tool for managing the deployment. Optionally, this addon deploys a single MinIO tenant so that you can get started using it out of the box. The default tenant can be configured (storage capacity, number of volumes, security) using command-line arguments when enabling the addon (see below).
The MinIO addon can use the simple hostpath storage for single-node clusters, or any storage class you decide for multi-node clusters.
Enable
For single-node development clusters, enable the MinIO add-on with a single command:
sudo microk8s enable minio
For a more advanced use-case (see sudo microk8s enable minio:-h for a list of all supported arguments), that deploys a MinIO tenant with 300GB storage capacity using the ceph-xfs storage class:
sudo microk8s enable minio -c 300Gi -s ceph-xfs
Alternatively, you can disable the creation of a default tenant and only deploy the MinIO operator with:
sudo microk8s enable minio -k
Access S3 endpoint and MinIO console
After deployment, the output prints the generated username and password, as well as the services created for the default tenant:
+ /var/snap/microk8s/common/plugins/kubectl-minio tenant create microk8s --storage-class microk8s-hostpath --capacity 20Gi --servers 1 --volumes 1 --namespace minio-operator --enable-audit-logs=false --disable-tls --enable-prometheus=false
W1129 22:39:53.272142 28741 warnings.go:70] unknown field "spec.pools[0].volumeClaimTemplate.metadata.creationTimestamp"
Tenant 'microk8s' created in 'minio-operator' Namespace
Username: 1PTKT0CBT0E09W4NRL9T
Password: sNgS1BYtquuF1DO8v0Gdsfvp2g2L5LgCRm7QFMqB
Note: Copy the credentials to a secure location. MinIO will not display these again.
APPLICATION SERVICE NAME NAMESPACE SERVICE TYPE SERVICE PORT
MinIO minio minio-operator ClusterIP 80
Console microk8s-console minio-operator ClusterIP 9090
You can use the supplied username and password to access and manage the tenant using the MinIO console. Create a port-forward for the MinIO console with the following command, and follow the instructions:
sudo microk8s kubectl-minio proxy
Using kubectl-minio
For second-day operations, like extending the default tenant with more storage capacity, it is highly recommended to use the kubectl-minio tool. The tool is installed when enabling the addon. A convenience command microk8s kubectl-minio will be available after enabling the add-on:
sudo microk8s kubectl-minio --help
For example, to list all active MinIO tenants:
sudo microk8s kubectl-minio tenant list
which produces output similar to:
Tenant 'microk8s', Namespace 'minio-operator', Total capacity 20 GiB
Current status: Initialized
MinIO version: minio/minio:RELEASE.2022-09-17T00-09-45Z