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adding sandbox.hortonworks.com to /etc/hosts does not seem to make a difference and that seems to be a problem for Banana

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New Contributor

Hello. I have been going through the Analyzing Twitter Data With Apache NiFi and HDP Search tutorial using Sandbox VM I downloaded a couple of weeks ago.

I did run 'echo 127.0.0.1 sandbox.hortonworks.com >> /etc/hosts' (I am assuming the partial quotation marks in 'echo "127.0.0.1 sandbox.hortonworks.com >> /etc/hosts' in the instructions are a typo), and my /etc/hosts file now looks like this:

127.0.0.1 localhost.localdomain localhost 10.0.2.15 sandbox.hortonworks.com sandbox ambari.hortonworks.com 127.0.0.1 sandbox.hortonworks.com

However, the following links never work:

http://sandbox.hortonworks.com:4200 http://sandbox.hortonworks.com:9090/nifi http://sandbox.hortonworks.com:8983/solr/

So, I replace 'http://sandbox.hortonworks.com' with '127.0.0.1' and NiFi and Solr seem to work fine, based on my limited understanding. However, when I get to starting Banana, and, go to '127.0.0.1:8983/solr/banana/index.html' (I am assuming that leaving out 'index.html' from 'http://sandbox.hortonworks.com:8983/solr/banana/' in the instructions is just an oversight, since without it we just see contents of the directory), I do get the basic Banana dashboard layout with black/gray background and buttons and rows and headers, but no data. I get the following two errors:

'Error Could not contact Solr at http://sandbox.hortonworks.com:8983/solr/. Please ensure that Solr is reachable from your system.' 'Error Could not retrieve collections from Solr (error status = 0)'

I thought, perhaps, if I replaced 'http://sandbox.hortonworks.com' with '127.0.0.1' in the 'default.json' file I downloaded from github earlier in the tutorial that might fix the problem, but Banana still saw no data, even though the error messages have changed slightly:

'Error Collection not found at 127.0.0.1:8983/solr/tweets. Please check your configuration or create the collection. If you are using a proxy ensure it is configured correctly.' 'Error Could not retrieve collections from Solr (error status = 404)'

The 'tweets' collection DOES exist, from what I can tell. If I enter the command we are given to create it, I am told it already exists. I can delete it and create it again, but that does not seem to make a difference for Banana.

Why does adding 'sandbox.hortonworks.com' to /etc/hosts not seem to work for me, does that mess anything else up besides Banana that I perhaps do not realize, and is there a workaround?

Many thanks!

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11 REPLIES 11

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Expert Contributor

@Ali Bajwa I will see that I get this incorporated into the tutorial.

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Sounds good!