SOLR Document Learning--using the SOLR administration User Interface

I wrote an article before.

SOLR Document Learning –getting Started

Continue today chapter II, management Console, first conceptually understand SOLR startup

Start SOLR (Windows edition) into SOLR's unzip directory first

Solr.cmd start

Next we go into the admin console

http://localhost:8983/solr/

On the left is a navigation, including control Panel, logging, Core admin/collections, Java properties, process, etc., and if the core admin/collections is configured you can also see a core admin/collections tool.

If you open it in Solrcloud mode, the navigation bar on the left will be cloud and collections

Start SOLR in Solrcloud mode command

Solr.cmd start-c 

This article is in the click Mode, so the discussion is all about Core admin, actually and collections is a concept collections/core admin

Dashboard and logging do not explain too much, one is the control Panel, and the other is the information about the log.
Let's open the most important collections/core Admin, in fact this I personally think can be understood as a database of tables (collections), and this name and MongoDB collections feeling is a concept. Below I will have assembled this concept to describe Collections/core Admin

There is no collection at first.

We can create collections in the console, or we can create collections at the command line.

Before the console creates the collection, you need to first create the related directories required by the collection.

command line Create collection

Ensure SOLR is activated

Solr.cmd create-c mycollections

Create a collection of mycollections

You can see the collection you just created in the console.

Console Create collection

First create the directory where the collection instance resides, and I'll create a mycollection2 directory here

Under the SERVER/SOLR of SOLR decompression directory

To create a directory where the collection data is stored, I created a data directory under Mycollection2

Then enter the console to create the collection

But this time there will be an error.

Error createing solrcore ' mycollection2 ': Unable to create core [Mycollection2] caused By:can ' t find resource ' solrconfig . xml ' in Classpath or ' D:\solr-6.1.0\server\solr\mycollection2 '

Said Mycollection2 lacked solrconfig.xml.

Copy Solrconfig.xml from the example directory files\conf in the SOLR directory to Mycollection2\data

This time it will be an error.

Error createing solrcore ' mycollection2 ': Unable to create core [Mycollection2] caused By:can ' t find resource ' Schema.xml ' In Classpath or ' D:\solr-6.1.0\server\solr\mycollection2 '

Missing Schema.xml, this new version actually does not need this file, it is replaced by a new file called Managed-schema, but in the console to create or to Schema.xml, copy one, or from SOLR example\files\ conf copy, copy it to Mycollection2, and rename it to Schema.xml

Re-create will also error,

Org.apache.solr.common.SolrException:Error createing solrcore ' mycollection2 ': Unable to create core [Mycollection2] caused By:can ' t find resource ' lang/contractions_it.txt ' in classpath or ' D:\solr-6.1.0\server\solr\mycollection2 '

This is because the renamed Schema.xml has some dependencies such as stop words, all under the Lang folder.

We're still copying from the Conf directory under SOLR's example\files\ to Mycolletion2.

Final directory structure of the MYCOLLECTIONS2

Create again

Created successfully, this console is still more troublesome, it is recommended to create a collection with the command line

To be Continued ... Reference Documents

SOLR Official Documentation Version 6.1

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