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KMS: Support for multiple Kerberos principals. (tucu)

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This commit is contained in:
Alejandro Abdelnur 2014-09-18 16:03:38 -07:00
parent 52945a33cc
commit fad4cd85b3
3 changed files with 30 additions and 1 deletions
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2
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -834,6 +834,8 @@ Release 2.6.0 - UNRELEASED
HADOOP-11105. MetricsSystemImpl could leak memory in registered callbacks.
(Chuan Liu via cnauroth)
KMS: Support for multiple Kerberos principals. (tucu)
Release 2.5.1 - 2014-09-05
INCOMPATIBLE CHANGES

3
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java
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@ -45,6 +45,7 @@
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.lang.reflect.UndeclaredThrowableException;
import java.net.HttpURLConnection;
import java.net.SocketTimeoutException;
import java.net.URI;
@ -400,6 +401,8 @@ public HttpURLConnection run() throws Exception {
});
} catch (IOException ex) {
throw ex;
} catch (UndeclaredThrowableException ex) {
throw new IOException(ex.getUndeclaredThrowable());
} catch (Exception ex) {
throw new IOException(ex);
}

26
hadoop-common-project/hadoop-kms/src/site/apt/index.apt.vm
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@ -602,7 +602,31 @@ $ keytool -genkey -alias tomcat -keyalg RSA
*** HTTP Kerberos Principals Configuration
TBD
When KMS instances are behind a load-balancer or VIP, clients will use the
hostname of the VIP. For Kerberos SPNEGO authentication, the hostname of the
URL is used to construct the Kerberos service name of the server,
<<<HTTP/#HOSTNAME#>>>. This means that all KMS instances must have a Kerberos
service name with the load-balancer or VIP hostname.
In order to be able to access directly a specific KMS instance, the KMS
instance must also have Keberos service name with its own hostname. This is
required for monitoring and admin purposes.
Both Kerberos service principal credentials (for the load-balancer/VIP
hostname and for the actual KMS instance hostname) must be in the keytab file
configured for authentication. And the principal name specified in the
configuration must be '*'. For example:
+---+
<property>
<name>hadoop.kms.authentication.kerberos.principal</name>
<value>*</value>
</property>
+---+
<<NOTE:>> If using HTTPS, the SSL certificate used by the KMS instance must
be configured to support multiple hostnames (see Java 7
<<<keytool>> SAN extension support for details on how to do this).
*** HTTP Authentication Signature