org.apache.hadoop.minikdc

Class MiniKdc

java.lang.Object

org.apache.hadoop.minikdc.MiniKdc

public class MiniKdc
extends Object

Mini KDC based on Apache Directory Server that can be embedded in testcases or used from command line as a standalone KDC.

From within testcases:

MiniKdc sets 2 System properties when started and un-sets them when stopped:

• java.security.krb5.conf: set to the MiniKDC real/host/port
• sun.security.krb5.debug: set to the debug value provided in the configuration

Because of this, multiple MiniKdc instances cannot be started in parallel. For example, running testcases in parallel that start a KDC each. To accomplish this a single MiniKdc should be used for all testcases running in parallel.

MiniKdc default configuration values are:

• org.name=EXAMPLE (used to create the REALM)
• org.domain=COM (used to create the REALM)
• kdc.bind.address=localhost
• kdc.port=0 (ephemeral port)
• instance=DefaultKrbServer
• max.ticket.lifetime=86400000 (1 day)
• max.renewable.lifetime=604800000 (7 days)
• transport=TCP
• debug=false

The generated krb5.conf forces TCP connections.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEBUG
static String	INSTANCE
static String	JAVA_SECURITY_KRB5_CONF
static String	KDC_BIND_ADDRESS
static String	KDC_PORT
static String	MAX_RENEWABLE_LIFETIME
static String	MAX_TICKET_LIFETIME
static String	ORG_DOMAIN
static String	ORG_NAME
static String	SUN_SECURITY_KRB5_DEBUG
static String	TRANSPORT

Constructor Summary

Constructors

Constructor and Description
MiniKdc(Properties conf, File workDir) Creates a MiniKdc.

Method Summary

Methods

Modifier and Type	Method and Description
static Properties	createConf() Convenience method that returns MiniKdc default configuration.
void	createPrincipal(File keytabFile, String... principals) Creates multiple principals in the KDC and adds them to a keytab file.
void	createPrincipal(String principal, String password) Creates a principal in the KDC with the specified user and password.
String	getHost() Returns the host of the MiniKdc.
File	getKrb5conf()
int	getPort() Returns the port of the MiniKdc.
String	getRealm() Returns the realm of the MiniKdc.
static void	main(String[] args)
void	start() Starts the MiniKdc.
void	stop() Stops the MiniKdc

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

JAVA_SECURITY_KRB5_CONF

public static final String JAVA_SECURITY_KRB5_CONF

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Constant Field Values

SUN_SECURITY_KRB5_DEBUG

public static final String SUN_SECURITY_KRB5_DEBUG

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Constant Field Values

ORG_NAME

public static final String ORG_NAME

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Constant Field Values

ORG_DOMAIN

public static final String ORG_DOMAIN

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Constant Field Values

KDC_BIND_ADDRESS

public static final String KDC_BIND_ADDRESS

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Constant Field Values

KDC_PORT

public static final String KDC_PORT

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Constant Field Values

INSTANCE

public static final String INSTANCE

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Constant Field Values

MAX_TICKET_LIFETIME

public static final String MAX_TICKET_LIFETIME

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Constant Field Values

MAX_RENEWABLE_LIFETIME

public static final String MAX_RENEWABLE_LIFETIME

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Constant Field Values

TRANSPORT

public static final String TRANSPORT

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Constant Field Values

DEBUG

public static final String DEBUG

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Constant Field Values

Constructor Detail

MiniKdc

public MiniKdc(Properties conf,
       File workDir)
        throws Exception

Creates a MiniKdc.

Parameters:

conf - MiniKdc configuration.

workDir - working directory, it should be the build directory. Under this directory an ApacheDS working directory will be created, this directory will be deleted when the MiniKdc stops.

Throws:

Exception - thrown if the MiniKdc could not be created.

Method Detail

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

createConf

public static Properties createConf()

Convenience method that returns MiniKdc default configuration.

The returned configuration is a copy, it can be customized before using it to create a MiniKdc.

Returns:

a MiniKdc default configuration.

getPort

public int getPort()

Returns the port of the MiniKdc.

Returns:

the port of the MiniKdc.

getHost

public String getHost()

Returns the host of the MiniKdc.

Returns:

the host of the MiniKdc.

getRealm

public String getRealm()

Returns the realm of the MiniKdc.

Returns:

the realm of the MiniKdc.

getKrb5conf

public File getKrb5conf()

start

public void start()
           throws Exception

Starts the MiniKdc.

Throws:

Exception - thrown if the MiniKdc could not be started.

stop

public void stop()

Stops the MiniKdc

createPrincipal

public void createPrincipal(String principal,
                   String password)
                     throws Exception

Creates a principal in the KDC with the specified user and password.

Parameters:

principal - principal name, do not include the domain.

password - password.

Throws:

Exception - thrown if the principal could not be created.

createPrincipal

public void createPrincipal(File keytabFile,
                   String... principals)
                     throws Exception

Creates multiple principals in the KDC and adds them to a keytab file.

Parameters:

keytabFile - keytab file to add the created principal.s

principals - principals to add to the KDC, do not include the domain.

Throws:

Exception - thrown if the principals or the keytab file could not be created.