question Re: SOLR server connection refused in Archives of Support Questions (Read Only)

SOLR server connection refused

aliyesami — Mon, 19 Aug 2019 09:06:09 GMT

my SOLR server is up and running but when ranger tries to connect to it I get error :

iam not sure if the ranger audit url I am using is correct since its unreachable "http://hadoop1:8983/solr/ranger_audits" ?

if I try to go to this url I get the error

HTTP ERROR 404
Problem accessing /solr/ranger_audits. Reason:
    Not Found

2016-12-01 22:25:03,511 [http-bio-6080-exec-5] ERROR org.apache.ranger.solr.SolrUtil (SolrUtil.java:78) - Error from Solr server.
org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://hadoop1:8983/solr/ranger_audits: Expected mime type application/octet-stream but got text/html. <html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Error 404 Not Found</title>
</head>
<body><h2>HTTP ERROR 404</h2>
<p>Problem accessing /solr/ranger_audits/select. Reason:
<pre>    Not Found</pre></p>
</body>
</html>

the SOLR console is reachable

Re: SOLR server connection refused

aliyesami — Mon, 19 Aug 2019 09:06:01 GMT

I noticed there are no cores available in SOLR admin , so do I have to create a core before I can connect with the above url ? if yes can you please guide me on how to do that ?

Re: SOLR server connection refused

dsharma — Fri, 02 Dec 2016 15:56:40 GMT

@Sami Ahmad which version of hadoop are you using ?

is this secure solr ?

if it is secure solr then we need to perform some extra steps , can you just confirm ?

Re: SOLR server connection refused

aliyesami — Sat, 03 Dec 2016 00:32:10 GMT

I am on HDP2.5 , I am not sure if its secure SOLR or not , how can I find out ?

I couldn't find any document from Hortonworks about how to setup SOLR for Ranger , can you point me to one?

Re: SOLR server connection refused

rmani — Tue, 06 Dec 2016 03:15:05 GMT

@Sami Ahmad

Check these documents

https://cwiki.apache.org/confluence/display/RANGER/Install+and+Configure+Solr+for+Ranger+Audits+-+Apache+Ranger+0.5

https://community.hortonworks.com/questions/69582/ranger-trying-to-use-solr.html#answer-69584

Re: SOLR server connection refused

aliyesami — Mon, 19 Aug 2019 09:05:53 GMT

I am not fi nding anywhere in these links where the following screen is explained , please help

Re: SOLR server connection refused

aliyesami — Mon, 19 Aug 2019 09:05:45 GMT

ok I copied the solrconfig.xml and schema.xml files into the /root/solr-6.3.0/server/lib folder but now I am getting this error :

Re: SOLR server connection refused

james_jones — Tue, 06 Dec 2016 06:35:55 GMT

@Sami Ahmad - You've got a couple of things going on. It looks like you are not using the Ambari Infra Solr installation. To use an external Solr, follow these instructions. You'll be using scripts rather than the UI to create the collection.

https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.3/bk_security/content/solr_ranger_configure_solrcloud.html

The version of Solr you as using may not work with Ambari. You should use 5.2.1 or 5.5.2 to be consistent with what's released with HDP. If you go to 6.x, being a major release, you may encounter significatn issues. Also note that $SOLR/server/lib is not the directory where your config files wold belong with Solr anyway. Normally you'll put them into a "config" directory somewhere. They cannot be in a directory with binary files or you will definitely encounter issues when it tries to load the directory into Zookeeper and then you have a bigger mess to clean up.

Re: SOLR server connection refused

james_jones — Tue, 06 Dec 2016 06:37:00 GMT

A.so, to install the right version of Solr, I'd recommend this page: https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.5.3/bk_security/content/installing_external_solr.html

Re: SOLR server connection refused

aliyesami — Tue, 06 Dec 2016 07:28:59 GMT

can you guide me on how to install Ambari Infra Solr installation as I didnt find it in the add services ?

Re: SOLR server connection refused

james_jones — Tue, 06 Dec 2016 07:38:38 GMT

@Sami Ahmad Which version of Ambari are you on? Ambari Infra is only in Ambari 2.4.0 and later.

Re: SOLR server connection refused

aliyesami — Mon, 19 Aug 2019 09:05:37 GMT

I just checked and Ambari Infra is already installed in my HDP2.5 cluster .

Re: SOLR server connection refused

james_jones — Tue, 06 Dec 2016 08:18:30 GMT

Are you also using Ambari 2.4.x? I believe Ambari Infra is shipped wit Ambari 2.4.x, not HDP 2.5. It's sort of like Ambari Metrics is part of Ambari but not directly part of HDP, even though it works with HDP. Assuming you have Ambari 2.4.x, do you don't see "Ambari Infra" when you select Add Service (it does not have the name Solr in it in Ambari)?

Re: SOLR server connection refused

james_jones — Wed, 07 Dec 2016 02:26:04 GMT

Glad you have it worked out. Somehow I missed your last post stating that it is already installed, so my previous comment is OBE.