Mark, We figured it out. It's an issue with RedHat's IPTables. You have to open up those ports:
vim /etc/sysconfig/iptables Make the file look like this # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 50030 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 50060 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 50070 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT Restart the web services /etc/init.d/iptables restart iptables: Flushing firewall rules: [ OK ] iptables: Setting chains to policy ACCEPT: filter [ OK ] iptables: Unloading modules: [ OK ] iptables: Applying firewall rules: [ OK ] On Mon, Oct 24, 2011 at 1:37 PM, Mark question <[email protected]> wrote: > I have the same issue and the output of "curl localhost:50030" is like > yours, and I'm running on a remote cluster on pesudo-distributed mode. > Can anyone help? > > Thanks, > Mark > > On Mon, Oct 24, 2011 at 11:02 AM, Sameer Farooqui > <[email protected]>wrote: > > > Hi guys, > > > > I'm running a 1-node Hadoop 0.20.2 pseudo-distributed node with RedHat > 6.1 > > on Amazon EC2 and while my node is healthy, I can't seem to get to the > > JobTracker GUI working. Running 'curl localhost:50030' from the CMD line > > returns a valid HTML file. Ports 50030, 50060, 50070 are open in the > Amazon > > Security Group. MapReduce jobs are starting and completing successfully, > so > > my Hadoop install is working fine. But when I try to access the web GUI > > from > > a Chrome browser on my local computer, I get nothing. > > > > Any thoughts? I tried some Google searches and even did a hail-mary Bing > > search, but none of them were fruitful. > > > > Some troubleshooting I did is below: > > [root@ip-10-86-x-x ~]# jps > > 1337 QuorumPeerMain > > 1494 JobTracker > > 1410 DataNode > > 1629 SecondaryNameNode > > 1556 NameNode > > 1694 TaskTracker > > 1181 HRegionServer > > 1107 HMaster > > 11363 Jps > > > > > > [root@ip-10-86-x-x ~]# curl localhost:50030 > > <meta HTTP-EQUIV="REFRESH" content="0;url=jobtracker.jsp"/> > > <html> > > > > <head> > > <title>Hadoop Administration</title> > > </head> > > > > <body> > > > > <h1>Hadoop Administration</h1> > > > > <ul> > > > > <li><a href="jobtracker.jsp">JobTracker</a></li> > > > > </ul> > > > > </body> > > > > </html> > > >
