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https://issues.apache.org/jira/browse/HADOOP-19060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoqiao He resolved HADOOP-19060.
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Resolution: Won't Fix
> Support hadoop client authentication through keytab configuration.
> ------------------------------------------------------------------
>
> Key: HADOOP-19060
> URL: https://issues.apache.org/jira/browse/HADOOP-19060
> Project: Hadoop Common
> Issue Type: New Feature
> Reporter: Zhaobo Huang
> Assignee: Zhaobo Huang
> Priority: Minor
> Labels: pull-request-available
>
> *Shield references to {{UserGroupInformation}} Class.*
> The current HDFS client keytab authentication code is as follows:
> {code:java}
> Configuration conf = new Configuration();
> conf.addResource(new
> Path("/usr/local/service/hadoop/etc/hadoop/hdfs-site.xml"));
> conf.addResource(new
> Path("/usr/local/service/hadoop/etc/hadoop/core-site.xml"));
> UserGroupInformation.setConfiguration(conf);
> UserGroupInformation.loginUserFromKeytab("foo", "/var/krb5kdc/foo.keytab");
> FileSystem fileSystem = FileSystem.get(conf);
> FileStatus[] fileStatus = fileSystem.listStatus(new Path("/"));
> for (FileStatus status : fileStatus) {
> System.out.println(status.getPath());
> } {code}
> This feature supports configuring keytab information in core-site.xml or hdfs
> site.xml. The authentication code is as follows:
> {code:java}
> Configuration conf = new Configuration();
> conf.addResource(new
> Path("/usr/local/service/hadoop/etc/hadoop/hdfs-site.xml"));
> conf.addResource(new
> Path("/usr/local/service/hadoop/etc/hadoop/core-site.xml"));
> FileSystem fileSystem = FileSystem.get(conf);
> FileStatus[] fileStatus = fileSystem.listStatus(new Path("/"));
> for (FileStatus status : fileStatus) {
> System.out.println(status.getPath());
> } {code}
> The config of core-site.xml related to authentication is as follows:
> {code:java}
> <configuration>
> <property>
> <name>hadoop.security.authentication</name>
> <value>kerberos</value>
> </property>
> <property>
> <name>hadoop.client.keytab.principal</name>
> <value>foo</value>
> </property>
> <property>
> <name>hadoop.client.keytab.file.path</name>
> <value>/var/krb5kdc/foo.keytab</value>
> </property>
> </configuration> {code}
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