@Harald Bögeholz Is this the Address of your ambari server "118.138.237.168" And are you accessing ambari File View directly or via some WebServer in front. . ... View more

@Harald Bögeholz Which version of Ambari Server are you using? If you want to use the Ambari File View then you will need to perform few additional setup before using it. https://docs.hortonworks.com/HDPDocuments/Ambari-2.4.0.0/bk_ambari-views/content/configuring_your_cluster_for_files_view.html . Like following (Proxy User Setup) - 1. If you are running your ambari server as root user then you will need to add the following properties in the Ambari UI --> Services --> HDFS --> Configs --> Advanced tab --> Custom core-site . hadoop.proxyuser.root.groups=* hadoop.proxyuser.root.hosts=* Here Instead of "hadoop.proxyuser.root.hosts" value as "*" you can also define the comma separated list of Hosts/addresses where the FileView will be running. This is needed for the Files View to access HDFS, the Ambari Server daemon hosting the view needs to act as the proxy user for HDFS. This allows Ambari to submit requests to HDFS on behalf of the users using the Files View. Based on your error we see that you are running your ambari server as "root" user. But the IP Address from which the FileView is running is not allowed to be proxied that's why you are getting this error: Unauthorized connection for super-user: root from IP 118.138.237.168 - 2. If you have logged in to Ambari File View as an "admin" user then you will need to make sure that you have created a directory for that user in HDFS as following: (if you have logged in to ambari file view with some other user then you will need to create the user specific directory in advance in HDFS) Example: su - hdfs hdfs dfs -mkdir /user/admin hdfs dfs -chown admin:hadoop /user/admin 3. Now you should be able to login and perform various operations to Ambari File View without any issue. . ... View more

@Vamsi N Regarding your query: "But cannot find a link to explore HDFS views in Ambari." You can use the HDFS "File View". Ambari UI --> "Manage Ambari" --> "Views" --> FILES --> Click on "Create Instance" . Regarding Hue view, You can also find the "HUE TO AMBARI Migration" View in ambari. Ambari UI --> "Manage Ambari" --> "Views" --> HUETOAMBARI_MIGRATION --> Click on "Create Instance" For more information please see: https://docs.hortonworks.com/HDPDocuments/Ambari-2.4.2.0/bk_ambari-views/content/creating_a_htv_instance.html The proxy users settings can be set to * means allow every group and request from every host. (or you can use a comma separated list of hostsnames/groups as well in the respective properties) hadoop.proxyuser.hue.groups=* hadoop.proxyuser.hue.hosts=* . ... View more

@Sami Ahmad Can you please check the following link: https://docs.hortonworks.com/HDPDocuments/Ambari-2.5.1.0/bk_ambari-installation/content/hdp_26_repositories.html There you will find the "md5" sum results of the Tarball. Please compare your Downloaded tarball md5 with this one to double check if you got any corrupted reppo or the correct one. . Tarball md5 | asc http://public-repo-1.hortonworks.com/HDP/centos6/2.x/updates/2.6.1.0/HDP-2.6.1.0-centos6-rpm.tar.gz ... View more

@Veena N Can you please check the following on the host where you have installed the VNC server. 1. In your Ambari Server Machine you have the correct package of "yum install tigervnc-server" installed as described in the following doc: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/ch-TigerVNC.html 2. Please check if it tigervnc service is running fine or not? # ps ax | grep tightvnc 3. Please use the "netstat" command to list the port opened by the "tigervnc-server" server. # netstat -tnlpa | grep $PID_VNC 4. If the port is opened, then please check if the "iptables" (Firewall) is turned off? # service iptables status # service iptables stop 5. Double check the IPAddress of the host is correct becore connecting to the host. Use the following command to list the IP Addresses # ifconfig . Ideally to access ambari server you do not need to install VNC server. You can simply make use of "SSH" (on windows putty based ssh access) to login to the VM host and then perform various operations. You can access the WebUI of the VM form your local machine. . ... View more

@Sami Ahmad Try using the file name as "$USER_HOME/.wgetrc" Wget initialization file can reside inside the following files: 1. "/usr/local/etc/wgetrc" (global, for all users) (OR) 2. $HOME/.wgetrc (for a single user). <strong></strong> You can try defining the entry of no_proxy inside the "$HOME/.wgetrc" file. "no_proxy"to use string as the comma-separated list of domains to avoid in proxy loading, instead of the one specified in environment. Please see: [0] https://www.gnu.org/software/wget/manual/html_node/Sample-Wgetrc.html [1] https://www.gnu.org/software/wget/manual/html_node/Wgetrc-Location.html [2] https://www.gnu.org/software/wget/manual/html_node/Proxies.html . ... View more

@Andreas Knapp - Any attempt of upgrading the "glibc" version might affect many other components installed at the OS level as well as the hadoop services. Hence it is not usually advised to upgrade the "glibc" package downloaded from other places apart from the one that is shipped with the OS. - The combination of later version of glibc with the existing packages have not been tested, although most of the programs may be able work because of backward compatibility. - The HDP components are also tested/certified on these RHEL/Centos releases which contains the "glibc" versions shipped along with the distribution. - So if you really want to use the higher version of "glibc" then you should try using the RHEL7 versions that includes higher version of glibc. . ... View more