## Explore Further

- [MinIO Client Complete Guide](https://min.io/docs/minio/linux/reference/minio-mc.html)
- [MinIO STS Quickstart Guide](https://min.io/docs/minio/linux/developers/security-token-service.html)
- [MinIO Admin Complete Guide](https://min.io/docs/minio/linux/reference/minio-mc-admin.html)

### 2. Run MinIO in federated mode

Bucket lookup from DNS federation requires two dependencies

- etcd (for bucket DNS service records)
- CoreDNS (for DNS management based on populated bucket DNS service records, optional)

## Architecture

![bucket-lookup](https://github.com/minio/minio/blob/master/docs/federation/lookup/bucket-lookup.png?raw=true)

### Environment variables

- For installations using Systemd MinIO service, upgrade via RPM/DEB packages **parallelly** on all servers or replace the binary lets say `/opt/bin/minio` on all nodes, apply executable permissions `chmod +x /opt/bin/minio` and process to perform `mc admin service restart alias/`.

### Upgrade Checklist

topic*               (string)    name of the MQTT topic to publish
username             (string)    MQTT username
password             (string)    MQTT password
qos                  (number)    set the quality of service priority, defaults to '0'
keep_alive_interval  (duration)  keep-alive interval for MQTT connections in s,m,h,d
reconnect_interval   (duration)  reconnect interval for MQTT connections in s,m,h,d

# MinIO STS Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

The MinIO Security Token Service (STS) is an endpoint service that enables clients to request temporary credentials for MinIO resources. Temporary credentials work almost identically to default admin credentials, with some differences:

`<Address for MinIO Service>/minio/v2/metrics/cluster`.

The additional node specific metrics which include additional go metrics or process metrics are exposed at
`<Address for MinIO Node>/minio/v2/metrics/node`.

```
mc admin bucket remote add myminio/srcbucket https://accessKey:secretKey@replica-endpoint:9000/destbucket --service replication --region us-east-1
Remote ARN = 'arn:minio:replication:us-east-1:c5be6b16-769d-432a-9ef1-4567081f3566:destbucket'

```

Create a MinIO service using `docker service` to read from Docker secrets.

```
docker service create --name="minio-service" --secret="access_key" --secret="secret_key" quay.io/minio/minio server /data
```

Read more about `docker service` [here](https://docs.docker.com/engine/swarm/how-swarm-mode-works/services/)

#### MinIO Custom Access and Secret Key files

You can use a policy variable in the Resource element, but only in the resource portion of the ARN. This portion of the ARN appears after the 5th colon (:). You can't use a variable to replace parts of the ARN before the 5th colon, such as the service or account. The following policy might be attached to a group. It gives each of the users in the group full programmatic access to a user-specific object (their own "home directory") in MinIO.

```
{

- `svcaccts[].accessKey` - accessKey of service account
- `svcaccts[].secretKey` - secretKey of svcacctsecretRef
- `svcaccts[].existingSecret` - secret name that contains the secretKey of service account
- `svcaccts[].existingSecretKey` - data key in existingSecret secret containing the secretKey
- `svcaccts[].user` - name of the parent user to assign to service account

## Uninstalling the Chart