Is security on? I'm not entirely sure (and I think it might be illuminating to the rest of us when you work this out, so please email back when you do), but I am guessing that a code change may be required. I think I remember someone telling me that hostnames are reverse-lookup'd to verify identities or some such.
________________________________ From: sodul <s...@odul.com> To: common-user@hadoop.apache.org Sent: Tuesday, October 1, 2013 4:13 AM Subject: IP based hadoop cluster For various reasons I need to setup hadoop without the need for hostnames or /etc/hosts files. I've had a good success configuring mapreduce and hdfs and so far seem to work properly (the datanodes register to the namenodes, the tasktrackers register to the node tracker). My current issue is with forcing the namenode to use an IP address. On the datanodes setting dfs.datanode.hostname to the IP address worked just fine, but I cannot find the equivalent for the namenode. The dfshealth.jsp page shows up properly on the namenode, I'm able to list the Live Nodes, however, the NameNode name is the host name on that page, and when I click 'Browse the filesystem' I get forwarded to one of the datanodes but with &nnaddr=namenode-hostname:54310, which throws and exception: java.net.UnknownHostException: namenode-hostname If I force the url to add the namenode IP address like &nnaddr=1.2.3.4:54310, then it works. I've tried to set dfs.datanode.hostname, slave.host.name, dfs.http.address, fs.default.name, fs.defaultFS ... nothing worked so far. The version of hadoop is 2.0.0-cdh4.1.2. -- View this message in context: http://hadoop.6.n7.nabble.com/IP-based-hadoop-cluster-tp70191.html Sent from the common-user mailing list archive at Nabble.com.
