I had a problem that it listened only on 8020, even though I told it to use 9000
On Fri, Feb 13, 2009 at 7:50 AM, Norbert Burger <norbert.bur...@gmail.com>wrote: > On Fri, Feb 13, 2009 at 8:37 AM, Steve Loughran <ste...@apache.org> wrote: > > > Michael Lynch wrote: > > > >> Hi, > >> > >> As far as I can tell I've followed the setup instructions for a hadoop > >> cluster to the letter, > >> but I find that the datanodes can't connect to the namenode on port 9000 > >> because it is only > >> listening for connections from localhost. > >> > >> In my case, the namenode is called centos1, and the datanode is called > >> centos2. They are > >> centos 5.1 servers with an unmodified sun java 6 runtime. > >> > > > > fs.default.name takes a URL to the filesystem. such as > > hdfs://centos1:9000/ > > > > If the machine is only binding to localhost, that may mean DNS fun. Try a > > fully qualified name instead > > > (fs.default.name is defined in conf/hadoop-site.xml, overriding entries > from > conf/hadoop-default.xml). > > Also, check your /etc/hosts file on both machines. Could be that you have > a > incorrect setup where both localhost and the namenode hostname (centos1) > are > aliased to 127.0.0.1. > > Norbert >
