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Explorer
Posts: 15
Registered: ‎06-02-2015
Accepted Solution

Hub Web UI doesn't work

[ Edited ]

Hi,  I have a cluster witn CDH 5.4.2,  and the whole cluster is working fine, but when I try to access to the Hue Web UI doesn't work, ( https://host:7180/cmf/services/23/status ) when I go to https://host:8888 , it doesn't work.. ( it looks like a ERR_CONNECTION_TIMED_OUT error )   I got the next error at the Log from Hue.  

 

5:37:45 AM INFO settings Welcome to Hue 3.7.0

5:37:46 AM WARNING __init__ Couldn't import snappy. Support for snappy compression disabled.[09/Jun/2015 20:00:13 ] settings INFO Welcome to Hue 3.7.0

6:00:14 AM WARNING __init__ Couldn't import snappy. Support for snappy compression disabled.

6:00:14 AM INFO settings Welcome to Hue 3.7.0

6:00:15 AM WARNING __init__ Couldn't import snappy. Support for snappy compression disabled.  

 

do you have any idea ? 

 

Cloudera Employee
Posts: 701
Registered: ‎07-30-2013

Re: Hub Web UI doesn't work

Could we get more log information about the Hue services? (the lines above
are just warnings when snappy is not installed and does not matter).

What is the health of Hue too in CM?

Romain

Explorer
Posts: 15
Registered: ‎06-02-2015

Re: Hub Web UI doesn't work

Hi, 

Thanks for your answerd, but I find out that it's something wrong with the gateway or something.

I can reach port 7180 .. that is for Cloudera Manager, 

But I can not reach Ports:

8888 - for Hue

50070 - for HDFS

8983 - for Solr ( also .. ports for Impala, Yarn )

 

those ports I already add as a DNAT rule, 

when I did a telnet test ... to those specifict ports.. I got an

HTTP/1.1 408 Request Timeout

 

 

Explorer
Posts: 15
Registered: ‎06-02-2015

Re: Hub Web UI doesn't work

nd the health of the whole CM is ok .. ( all the programs, are working fine.. they have green light )

also I restart the CM , twice, in order to test it.. but I still got the same error.. 

 

Cloudera Employee
Posts: 701
Registered: ‎07-30-2013

Re: Hub Web UI doesn't work

Hum, seems like you have a firewall issue or something like that

Explorer
Posts: 15
Registered: ‎06-02-2015

Re: Hub Web UI doesn't work

actually i get 

Clock Offset

on the whole clusters 

but when i try to updated 

 

$ sudo ntpdate pool.ntp.org
$ sudo service ntp stop
$ sudo ntpdate pool.ntp.org
$ sudo service ntp start

 

i got an error

 

no server suitable for synchronization found

 

also i try the next.. 

 

 $ sudo ntpdate ntp.ubuntu.com

**** ntpdate[1258]: no server suitable for synchronization found
$ sudo ntpdate pool.ntp.org
**** ntpdate[1267]: no server suitable for synchronization found
$ sudo ntpdate de.pool.ntp.org
**** ntpdate[1273]: no server suitable for synchronization found
$ sudo ntpdate us.pool.ntp.org
**** ntpdate[1276]: no server suitable for synchronization found

 

do you have any suggest?

Explorer
Posts: 7
Registered: ‎06-09-2015

Re: Hub Web UI doesn't work

I got these WARN in kt renewer under hue log and after two hours of troubleshooting learnt that the PID on Cloudera Monitoring serverices had some conflicts.

Had to stop Cloudera Monitor services

restart cloudera-scm-server and agent

It did all the magic.

Issue resolved..

 

 

It might be different for others, though.

Explorer
Posts: 7
Registered: ‎06-09-2015

Re: Hub Web UI doesn't work

There was no Firewall issue for me.

Explorer
Posts: 6
Registered: ‎05-08-2017

Re: Hub Web UI doesn't work

[ Edited ]

Facing the same issue. Can't connect to the other ports like 

8888 - for Hue

50070 - for HDFS

 

When try to open hue web ui.... its saying "

This site can’t be reached

gke-hadoop-ubuntu-default-pool-78514257-626p.c.platform-services.internal’s server DNS address could not be found.

DNS_PROBE_FINISHED_NXDOMAIN"Capture1.PNG

Please help.

Posts: 434
Topics: 1
Kudos: 102
Solutions: 54
Registered: ‎04-22-2014

Re: Hub Web UI doesn't work

@frankenstein, "server DNS address could not be found." indicates that your configured DNS servers on the browser host cannot resolve your hostname.  Make sure gke-hadoop-ubuntu-default-pool-78514257-626p.c.platform-services.internal  can be resolved to an IP address on your browser host.

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