On May 21, 2013, at 3:48 PM, Andrew Bayer <andrew.ba...@gmail.com> wrote:
> Yeah, DNS is a giant pain. If at all possible, you need to get the hostnames > resolvable from wherever you're spinning the instances up, as well as on the > instances themselves. The DNS that CloudStack's DHCP assigns should do the > trick for that. argh… These instances have public IPs but not DNS entries. @andrei the hadoop-3d5 and other names are setup as the name of the instances. They are used for local 'hostname'. so no not resolvable. > > A. > > On Tue, May 21, 2013 at 12:46 PM, Sebastien Goasguen <run...@gmail.com> wrote: > Hi, > > I installed whirr 0.8.1, I am using it against a CloudStack endpoint. > Instances get launched and I am trying to setup cdh. > > I believe I am running into a DNS issue as I am running into lots of issues > of this type: > > 13/05/21 21:21:28 WARN net.DNS: Unable to determine local hostname -falling > back to "localhost" > java.net.UnknownHostException: hadoop-3d5: hadoop-3d5 > > If I log in to the name node and try to use hadoop I get things like: > > $ hadoop fs -mkdir /toto > -mkdir: java.net.UnknownHostException: hadoop-3d5 > > my hadoop-site.xml looks like: > > <?xml version="1.0"?> > <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> > <configuration> > <property> > <name>dfs.client.use.legacy.blockreader</name> > <value>true</value> > </property> > <property> > <name>fs.default.name</name> > <value>hdfs://hadoop-3d5:8020/</value> > </property> > <property> > <name>mapred.job.tracker</name> > <value>hadoop-3d5:8021</value> > </property> > <property> > <name>hadoop.job.ugi</name> > <value>root,root</value> > </property> > <property> > <name>hadoop.rpc.socket.factory.class.default</name> > <value>org.apache.hadoop.net.SocksSocketFactory</value> > </property> > <property> > <name>hadoop.socks.server</name> > <value>localhost:6666</value> > </property> > </configuration> > > my ~/.whirr/hadoop/instances file has all the right IP addresses, but I don't > think the security group rules got created. > > Any thoughts ? > > thanks, > > -sebastien > >
