Berry Österlund created YARN-7922: ------------------------------------- Summary: Yarn dont resolve rm/_HOST to hostname Key: YARN-7922 URL: https://issues.apache.org/jira/browse/YARN-7922 Project: Hadoop YARN Issue Type: Bug Components: yarn Affects Versions: 2.7.3 Reporter: Berry Österlund
The normal auth_to_local usually removes everything after the / in the username of the Kerberos principle. That, together with the _HOST setting in the configuration files specifying the Kerberos principles is usually what is required to convert rm/_HOST@<REALM> to user yarn. In our environment, we cant use the default rules in auth_to_local. We have to specify each and every host and only convert those specifically. In other words, we don’t have the DEFAULT rule in auth_to_local. Ideally, the config for us would be the following {code:java} RULE:[1:$1@$0](rm@<REALM>)s/.*/invalid_user/ RULE:[2:$1/$2@$0](rm/rm1_host.fulldomain@<REALM>)s/.*/yarn/ RULE:[2:$1/$2@$0](rm/rm2_host.fulldomain@<REALM>)s/.*/yarn/ {code} But if we use only that configuration, the servicecheck in Ambari failes with the following exception. {code:java} org.apache.hadoop.yarn.exceptions.YarnException: Failed to submit application_1518422080198_0002 to YARN : Failed to renew token: Kind: HDFS_DELEGATION_TOKEN, Service: ha-hdfs:devhadoop, Ident: (HDFS_DELEGATION_TOKEN token 11096 for ambari-qa) at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.submitApplication(YarnClientImpl.java:272) at org.apache.hadoop.yarn.applications.distributedshell.Client.run(Client.java:708) at org.apache.hadoop.yarn.applications.distributedshell.Client.main(Client.java:215) {code} Inside the RM’s logfile, I can find the following. {code:java} Caused by: org.apache.hadoop.security.AccessControlException: yarn tries to renew a token with renewer rm/_HOST@<REALM> {code} Adding the following rule to auth_to_local solves the problem RULE:[2:$1/$2@$0](rm/_HOST@<REALM>)s/.*/yarn/ The client used to test this is executed with the following command yarn org.apache.hadoop.yarn.applications.distributedshell.Client -shell_command ls -num_containers 1 -jar /usr/hdp/current/hadoop-yarn-client/hadoop-yarn-applications-distributedshell.jar -timeout 300000 --queue <YARN_QUEUE> -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-dev-h...@hadoop.apache.org