Cloudera Community
gvishal
user rank
Contributor

Re: Authentication error in file view access via A...

by Contributor in Support Questions
‎11-06-2017 05:32 AM
‎11-06-2017 05:32 AM
Thanks Jay. Everything is working now. Yes, the Regular Ambari has kerberos enabled. The links in the last message has been helpful. All the settings were correct except Authentication Method was set wrongly as SIMPLE. After changing the setting to Kerberos and adding the principle it started working. Also the keytabs on the standalone host was missing. Added the kebtab and kinit of prinicipal everything is fine. Thank you for prompt help. ... View more

Authentication error in file view access via Ambar...

by Contributor in Support Questions
‎11-06-2017 03:50 AM
‎11-06-2017 03:50 AM
I have LDAP & SSL working fine on HDP2.6.0.3 cluster where we have setup a standalone instance of Ambari Views on a edge node for security reasons. Now getting an Authentication error while trying to access the 'file views' using admin user. Log don't show any specific information. Failed to transition to undefined Authentication required Failed to transition to undefined Server status: 500 Server Message: Authentication required Error trace: org.apache.hadoop.security.AccessControlException: Authentication required at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:460) at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$200(WebHdfsFileSystem.java:114) at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:750) at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:592) at org.apache.hadoop.hdfs.web.W... ... View more
Labels:

Re: how to change default Atlas UI admin password

by Contributor in Support Questions
‎10-31-2017 11:54 AM
‎10-31-2017 11:54 AM
Hello Nixon, I am not adding new user. I am trying to change the password for the existing admin user. I change the user-credentials.properties file but no success. Thanks for offering the help. ... View more

how to change default Atlas UI admin password

by Contributor in Support Questions
‎10-30-2017 12:12 PM
‎10-30-2017 12:12 PM
Hello, I try to change the default Atlas admin UI password using following steps but it does not work. Step 1: Generate the sha256 password string # echo -n "Password" | sha256sum e7cf3ef4f17c3999a94f2c6f612e8a888e5b1026878e4e19398b23bd38ec221a Step 2: Modify the users-credentials.properties file # /etc/atlas//0/users-credentials.properties #username=group::sha256-password admin=ADMIN::e7cf3ef4f17c3999a94f2c6f612e8a888e5b1026878e4e19398b23bd38ec221a <---- replace this string rangertagsync=RANGER_TAG_SYNC ::e3f67240f5117d1753c940dae9eea772d36ed5fe9bd9c94a300e40413f1afb9d Note: Replace sha256 string which was generated in step one. Step 3: Navigate to Ambari and restart the Atlas service. Step 4: Login with the new password. But it does not work. Any instructions or missing step in the above procedure. Thank you. ... View more
Labels:

Re: knox responsed 404 not found when use file vie...

by Contributor in Support Questions
‎10-23-2017 04:36 AM
‎10-23-2017 04:36 AM
Hello Sen, my webhdfs is working with {{webhdfs_service_urls}} and change the default to adminui but still getting 404 ... View more

Re: Knox UI Mapping Problem - ResourceManager Web ...

by Contributor in Support Questions
‎10-23-2017 03:43 AM
‎10-23-2017 03:43 AM
Hello Andreas, Looks like I am in a similar situation as yours. Oozie & hive are working but yarn, Ambari & Ranger UI are failing with 404. Did you manage to solve the issue. Can you please guide on the steps. Thank you. ... View more

Re: knox responsed 404 not found when use file vie...

by Contributor in Support Questions
‎10-23-2017 03:34 AM
‎10-23-2017 03:34 AM
The cluster is kerberozied and ldap configured with Active directory. AD KDC is getting used, not local KDC ... View more

Re: knox responsed 404 not found when use file vie...

by Contributor in Support Questions
‎10-23-2017 03:32 AM
‎10-23-2017 03:32 AM
Hello Jay, I have tried creating ui.xml and adminui.xml (both names) but I am still getting 404 for ambari UI via knox. curl -vik -u <username> 'https://<ip knox_node>:8442/gateway/default/ui/ambari ( we used port 8442 for HTTPS/ssl) the webhdfs, oozie and hive is working. curl -vik -u <username> 'https://<ip knox node>:8442/gateway/default/oozie' curl -vik -u <username> 'https://<ip knox node>:8442/gateway/default/hive' Any thoughts , what else is required. Thanks ... View more

Re: Kerberos Setup on HDP 2.6

by Contributor in Support Questions
‎08-10-2017 12:51 PM
‎08-10-2017 12:51 PM
Hello Geoffrey, I agree. The challenge we face last time is that cluster unkerberization via Ambari get stuck and then doing it manually using the link https://stackoverflow.com/questions/29744821/how-to-disable-hadoop-kerberos help a bit but not completely. We now have to re-initialize the whole cluster and this time, using Ambari it gets setup successfully. Looks like it is important to have a pre-kerberozation check list to make sure that the cluster is in proper state before start of this exercise. Thanks for your time and sharing the knowhow. Appreciate it. Best Regards, ... View more

Re: Kerberos Setup on HDP 2.6

by Contributor in Support Questions
‎08-10-2017 02:15 AM
‎08-10-2017 02:15 AM
Hello Geoffrey, Just wondering if you have similar instructions unkerberoize the cluster in case we fail to successfully setup the keberos. Thanks for the instructions and help. ... View more
Contact Me
Online
Offline
Last Visited
‎04-07-2017 01:16 AM
Community Statistics
Member Since ‎04-06-2017 09:40 PM
Last Visited ‎04-07-2017 01:16 AM
Posts 38
Kudos received 1