question No WebUIs are working except for Cloudera Manager in Archives of Support Questions (Read Only)

No WebUIs are working except for Cloudera Manager

MidwestMike — Tue, 21 Apr 2026 13:51:31 GMT

Hi,

I have a cloudera cluster installed - it is CDH 5.5.2. All of the services look fine - everything is green! All of the hosts have green dots, and the services too when I drill down on any service.

I can create a spark job, do spark-submit and run the job, I can put stuff into hdfs and retrieve it from hdfs. For some reason no Web UIs work outside of Cloudera Manager. hue, Yarn Manager, Spark History Server, Solr, all the UIs just don't even get resolved. I can go to the Apache2 Ubuntu home page on port 80 as well.

Any ideas at all would help at this point.

Re: No WebUIs are working except for Cloudera Manager

MidwestMike — Tue, 14 Jun 2016 05:21:04 GMT

The problem was ports. I did not have all of the ports open on my cluster.

Re: No WebUIs are working except for Cloudera Manager

Vale — Mon, 20 Jun 2016 10:40:45 GMT

How did you solve your problem? my 50070 door doesn't appear after a

netstat -tulpn

command, so I have problems all around Cloudera. Restarting the namenode didn't solve it, neither did putting a rule exception in the iptables file:

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

Re: No WebUIs are working except for Cloudera Manager

MidwestMike — Sat, 24 Dec 2016 20:06:02 GMT

Hi I used this helpful page to do it. Sorry I didn't repond earlier. Do you want the exact commands?

https://cloud.google.com/compute/docs/networking