question Re: knox responsed 404 not found when use file view and curl command in Archives of Support Questions (Read Only)

knox responsed 404 not found when use file view and curl command

sen_ke — Wed, 20 Sep 2017 14:04:50 GMT

Hi All:

i'm using ambari 2.52 and HDP 2.6 by repo install (not sandbox),

i created a new lab only start HDFS/YARN/MapReduce for knox test, and add new host only install knox,

now, i can access ambari manager web via knox (i have add AMBARIUI config in advanced topology), but when click file view (or other view) will get 404 not found error,

try to use curl command to access hdfs folder also get 404 not found error,

if any other configure need setting?

Re: knox responsed 404 not found when use file view and curl command

jsensharma — Wed, 20 Sep 2017 14:14:22 GMT

@Sen Ke

This is what i tried on Ambari 2.5.2 and i have the following content inside my newly created file "/etc/knox/conf/topologies/ui.xml" file and then restarted the knox and i am able to access the Ambari UI as well as all the Views without any issue.

<topology>
    <gateway>
        <provider>
            <role>authentication</role>
            <name>Anonymous</name>
            <enabled>true</enabled>
        </provider>
        <provider>
            <role>identity-assertion</role>
            <name>Default</name>
            <enabled>false</enabled>
        </provider>
    </gateway>
    <service>
        <role>AMBARI</role>
        <url>http://knox.example.com:8080/</url>
    </service>
    <service>
        <role>AMBARIUI</role>
        <url>http://knox.example.com:8080/</url>
    </service>
</topology>

URL that i used to access the FileView: https://knox.example.com:8443/gateway/ui/ambari/#/main/view/FILES/auto_files_instance

To access ambari: https://knox.example.com:8443/gateway/ui/ambari

Re: knox responsed 404 not found when use file view and curl command

sen_ke — Wed, 20 Sep 2017 14:36:42 GMT

@Jay SenSharma

you're great,

i tried add new xml and AMBARI/AMBARIUI url point to my ambari manager (i install in different host),

file view via knox is worked now, amazing!

very thanks.

Re: knox responsed 404 not found when use file view and curl command

jsensharma — Wed, 20 Sep 2017 14:59:27 GMT

@Sen Ke

Good to know that the issue is resolved and you are able to access the Views via Knox now.

It will be also great if you can mark this HCC thread as "Accepted", sothat other HCC users can quickly browse the answered solutions if they hit the same/simialr issue.

Re: knox responsed 404 not found when use file view and curl command

gvishal — Mon, 23 Oct 2017 10:32:52 GMT

Hello Jay, I have tried creating ui.xml and adminui.xml (both names) but I am still getting 404 for ambari UI via knox.

curl -vik -u <username> 'https://<ip knox_node>:8442/gateway/default/ui/ambari ( we used port 8442 for HTTPS/ssl)

the webhdfs, oozie and hive is working.

curl -vik -u <username> 'https://<ip knox node>:8442/gateway/default/oozie'

curl -vik -u <username> 'https://<ip knox node>:8442/gateway/default/hive'

Any thoughts , what else is required. Thanks

Re: knox responsed 404 not found when use file view and curl command

gvishal — Mon, 23 Oct 2017 10:34:38 GMT

The cluster is kerberozied and ldap configured with Active directory. AD KDC is getting used, not local KDC

Re: knox responsed 404 not found when use file view and curl command

sen_ke — Mon, 23 Oct 2017 10:57:30 GMT

@Vishal Gupta

in my case, i'm change WEBHDFS service config from {{webhdfs_service_urls}} to http://My_NameNode:50070/webhdfs in xml

and your command URL should use "ui" or "adminui" instead "default"

Re: knox responsed 404 not found when use file view and curl command

gvishal — Mon, 23 Oct 2017 11:36:17 GMT

Hello Sen, my webhdfs is working with {{webhdfs_service_urls}} and change the default to adminui but still getting 404