@Siva Nagisetty The Data Governance documentation contains references to setting up Governance with Apache Atlas for various components including Kafka. ... View more

@Eyad Garelnabi According to the Hadoop Documentation, permissions checks for the superuser always succeed, even if you try to restrict them. The process (and group) used to start the namenode become the superuser and can always do everything within HDFS. ... View more

@da li The answers here are close, but not quite. The proxy user settings take the form of hadoop.proxyuser.<username>.[groups|hosts]. So, in your Custom hdfs-site.xml section of Ambari, add the following two parameters: hadoop.proxyuser.root.hosts=* hadoop.proxyuser.root.groups=* This will correct the impersonation error. ... View more

@mqadri FreeIPA does not currently support Multi-tenancy. There was an article written with regards to what was required in V3 to support this, but it has not been implemented as of 2015. The Request for Enhancement has been open for 4 years or so, but development has been in the direction of IPA to IPA trusts (at least as of Feb 2015). The version of IPA included with RHEL/CentOS 6 is 3.0.0: [root@sandbox resources]# yum info ipa-server Loaded plugins: fastestmirror, priorities Loading mirror speeds from cached hostfile * base: mirror.team-cymru.org * epel: mirrors.mit.edu * extras: ftp.usf.edu * updates: dallas.tx.mirror.xygenhosting.com Available Packages Name : ipa-server Arch : x86_64 Version : 3.0.0 Release : 50.el6.centos.1 Size : 1.1 M Repo : base Summary : The IPA authentication server URL : http://www.freeipa.org/ License : GPLv3+ Description : IPA is an integrated solution to provide centrally managed Identity (machine, : user, virtual machines, groups, authentication credentials), Policy : (configuration settings, access control information) and Audit (events, : logs, analysis thereof). If you are installing an IPA server you need : to install this package (in other words, most people should NOT install : this package). The version included with RHEL/CentOS 7 is version 4.2, but it still does not seem to support multi-tenancy per the above links. ... View more

@Vincent Romeo The hive.metastore.heapsize is not a parameter that is in a file like hive-site.xml. This value is used by Ambari for substitution into the hive-env template file. You can see this section in the text box in Ambari: if [ "$SERVICE" = "metastore" ]; then export HADOOP_HEAPSIZE={{hive_metastore_heapsize}} # Setting for HiveMetastore else export HADOOP_HEAPSIZE={{hive_heapsize}} # Setting for HiveServer2 and Client fi The {{hive_metastore_heapsize}} is where the substitution is made. ... View more

@Kumar Veerappan You should be able to read the /etc/ambari-agent/conf/ambari-agent.ini file on any node in the cluster. You will find a [server] section that will tell you where the Ambari server is: [server] hostname = ambari-server.example.com url_port = 8440 secured_url_port = 8441 ... View more