# Distributed Server Design Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

This document explains the design, architecture and advanced use cases of the MinIO distributed server.

## Command-line

```
NAME:
  minio server - start object storage server

USAGE:
  minio server [FLAGS] DIR1 [DIR2..]
  minio server [FLAGS] DIR{1...64}
  minio server [FLAGS] DIR{1...64} DIR{65...128}

DIR:

// K8S may get a pod Add event without any IPs in the object, and the pod will later be updated with IPs.
//
// We always need the IPs, but this is fine because this AddPodToMesh can be called from the CNI plugin as well,
// which always has the firsthand info of the IPs, even before K8S does - so we pass them separately here because

/**
 * {@link String}用のユーティリティクラスです。
 *
 * @author higa
 * @author shinsuke
 */
public abstract class StringUtil {

    /**
     * A system line separator.
     */
    public static final String RETURN_STRING = System.getProperty("line.separator");

    /**
     * 空文字<code>""</code>です。
     */
    public static final String EMPTY = "";

    /**
     * 文字列型の空の配列です。
     */

	// Captures site name and region
	globalSite config.Site

	// MinIO local server address (in `host:port` format)
	globalMinioAddr = ""

	// MinIO default port, can be changed through command line.
	globalMinioPort        = GlobalMinioDefaultPort
	globalMinioConsolePort = "13333"

	// Holds the host that was passed using --address
	globalMinioHost = ""
	// Holds the host that was passed using --console-address

translation above except that arrays passed as parameters translate
explicitly in Go to pointers to arrays, as they do (implicitly) in C.

Garbage collection is the big problem.  It is fine for the Go world to
have pointers into the C world and to free those pointers when they
are no longer needed.  To help, the Go code can define Go objects
holding the C pointers and use runtime.SetFinalizer on those Go objects.

   * method.
   */
  public void callAndAssertWaits(String methodName, Object conditionLikeObject) throws Exception {
    checkNotNull(methodName);
    checkNotNull(conditionLikeObject);
    // TODO: Restore the following line when Monitor.hasWaiters() no longer acquires the lock.
    // assertEquals(false, invokeMethod("hasWaiters", conditionLikeObject));
    sendRequest(methodName, conditionLikeObject);
    Thread.sleep(DUE_DILIGENCE_MILLIS);

import java.util.NoSuchElementException;
import javax.annotation.CheckForNull;

/**
 * Implementation detail for the internal structure of {@link Range} instances. Represents a unique
 * way of "cutting" a "number line" (actually of instances of type {@code C}, not necessarily
 * "numbers") into two sections; this can be done below a certain value, above a certain value,

  fi
  while IFS="=" read -r key value; do
    # Remove '\r' from value to allow usage on windows as IFS does not consider '\r' as a separator ( considers space, tab, new line ('\n'), and custom '=' )
    safeValue=$(echo "$value" | tr -d '\r')
    case "$key" in wrapperUrl)
      wrapperUrl="$safeValue"
      break
      ;;
    esac

        verifyArcfourHMAC(17, expect, data, key);
    }



    @Test
    public void testAES128Checksum () throws GeneralSecurityException {
        String data = "eight nine ten eleven twelve thirteen";
        String key = "9062430C8CDA3388922E6D6A509F5B7A";
        String expect = "01A4B088D45628F6946614E3";
        verifyAESHMAC(3, expect, key, data.getBytes(StandardCharsets.US_ASCII));
    }

* **Linux:** `${HOME}/.minio/certs`
* **Windows:** `%%USERPROFILE%%\.minio\certs`

**Note:**

* Location of custom certs directory can be specified using `--certs-dir` command line option.
* Inside the `certs` directory, the private key must by named `private.key` and the public key must be named `public.crt`.