// ----------
// Supports following actions:
// - restart (restarts all the MinIO instances in a setup)
// - stop (stops all the MinIO instances in a setup)
// - freeze (freezes all incoming S3 API calls)
// - unfreeze (unfreezes previously frozen S3 API calls)
//
// This newer API now returns back status per remote peer and local regarding
// if a "restart/stop" was successful or not. Service signal now supports

Once the config changes are applied, proceed to restart **Hadoop** services.

![hdfs-services](https://github.com/minio/minio/blob/master/docs/bigdata/images/image7.png?raw=true "hdfs restart services")

### **3.2 Configure Spark2**

Navigate to **Services** -> **Spark2** -> **CONFIGS** as shown below

access to port 9000

```sh
iptables -A INPUT -p tcp --dport 9000 -j ACCEPT
service iptables restart
```

Below command enables all incoming traffic to ports ranging from 9000 to 9010.

```sh
iptables -A INPUT -p tcp --dport 9000:9010 -j ACCEPT
service iptables restart
```

## Test MinIO Connectivity

### Test using MinIO Console

## MinIO KMS Quick Start

MinIO supports two ways of encrypting IAM and configuration data.
You can either use KES - together with an external KMS - or, much simpler,
set the env. variable `MINIO_KMS_SECRET_KEY` and start/restart the MinIO server. For more details about KES and how
to set it up refer to our [KMS Guide](https://github.com/minio/minio/blob/master/docs/kms/README.md).

Instead of configuring an external KMS you can start with a single key by

	globalObjLayerMutex.Lock()
	globalObjectAPI = objLayer
	globalObjLayerMutex.Unlock()
	return objLayer, erasureDirs, nil
}

// cmdType - Represents different service subcomands like status, stop
// and restart.
type cmdType int

const (
	restartCmd cmdType = iota
	stopCmd
)

// toServiceSignal - Helper function that translates a given cmdType
// value to its corresponding serviceSignal value.

### Multi destination replication

// 'freeze' is 'false' would resume all S3 API calls again.
// NOTE: once a tenant is frozen either two things needs to
// happen before resuming normal operations.
//   - Server needs to be restarted 'mc admin service restart'
//   - 'freeze' should be set to 'false' for this call
//     to resume normal operations.
func (sys *NotificationSys) ServiceFreeze(ctx context.Context, freeze bool) []NotificationPeerErr {

statefulset additionalAnnotation: [] ## Typically the deployment/statefulset includes checksums of secrets/config, ## So that when these change on a subsequent helm install, the deployment/statefulset ## is restarted. This can result in unnecessary restarts under GitOps tooling such as ## flux, so set to "true" to disable this behaviour. ignoreChartChecksums: false ## Additional arguments to pass to minio binary extraArgs: [] ## Internal port number for MinIO S3 API container ## Change service.port...

statefulset additionalAnnotation: [] ## Typically the deployment/statefulset includes checksums of secrets/config, ## So that when these change on a subsequent helm install, the deployment/statefulset ## is restarted. This can result in unnecessary restarts under GitOps tooling such as ## flux, so set to "true" to disable this behaviour. ignoreChartChecksums: false ## Additional arguments to pass to minio binary extraArgs: [] ## Internal port number for MinIO S3 API container ## Change service.port...

statefulset additionalAnnotation: {} ## Typically the deployment/statefulset includes checksums of secrets/config, ## So that when these change on a subsequent helm install, the deployment/statefulset ## is restarted. This can result in unnecessary restarts under GitOps tooling such as ## flux, so set to "true" to disable this behaviour. ignoreChartChecksums: false ## Additional arguments to pass to minio binary extraArgs: [] ## Additional volumes to minio container extraVolumes: [] ## Additional volumeMounts...