Shulou(Shulou.com)06/02 Report--

Lu Chunli's work notes are not as good as bad notes.

Solr is the popular, blazing-fast, open source enterprise search platform built on Apache Lucene.

The Lucene official website address is: http://lucene.apache.org/

The Solr official website address is: http://lucene.apache.org/solr/

The latest version of both Lucene and Solr is 5.4.0, and version 5.3.0 is used when learning here.

Description: after Solr is decompressed, the docs directory is its help information, and you can also view help through http://wiki.apache.org/solr/.

1. Decompression

Tar-xzv-f solr-5.3.0.tgz# directory structure: [hadoop@nnode solr-5.3.0] $ll Total usage 1160drwxr-xr-x 3 hadoop hadoop 4096 August 12 17:16 bin-rw-r--r-- 1 hadoop hadoop 502443 August 17 18:23 CHANGES.txtdrwxr-xr-x 13 hadoop hadoop 4096 August 17 19:42 contribdrwxrwxr-x 4 hadoop hadoop 4096 January 21 12:28 distdrwxrwxr-x 19 hadoop hadoop 4096 January 21 12:28 docsdrwxr-xr-x 7 hadoop hadoop 4096 January 21 12:28 exampledrwxr-xr-x 2 hadoop hadoop 36864 January 21 12:28 licenses-rw-r--r-- 1 hadoop hadoop 12646 August 12 17:16 LICENSE.txt-rw-r--r-- 1 hadoop hadoop 565851 August 17 18:23 LUCENE_CHANGES.txt-rw-r--r-- 1 hadoop hadoop 26529 August 12 17:16 NOTICE.txt-rw- Rmermerr hadoop hadoop-1 hadoop hadoop 7167 August 12 17:16 README.txtdrwxr-xr-x 11 hadoop hadoop 4096 January 21 12:28 server # Solr5 start using the server program directory [hadoop@nnode solr-5.3.0] $

Note: Solr needs to depend on Jvava. The version of jdk used here is 1.7.

Java version "1.7.080" Java (TM) SE Runtime Environment (build 1.7.0_80-b15) Java HotSpot (TM) 64-Bit Server VM (build 24.80-b11, mixed mode)

2. Start Solr

[hadoop@nnode solr-5.3.0] $bin/solr-VUsing Solr root directory: / lucl/solr-5.3.0Using Java: / lucl/jdk1.7.0_80/bin/javajava version "1.7.0x80" Java (TM) SE Runtime Environment (build 1.7.0_80-b15) Java HotSpot (TM) 64-Bit Server VM (build 24.80-b11) Mixed mode) Solr home directory / lucl/solr-5.3.0 must contain a solr.xml file! [hadoop@nnode solr-5.3.0] $

Note: the SOLR_HOME variable does not need to be configured for the time being, otherwise it will look for the solr.xml file in the SOLR_HOME directory when starting through bin/solr start, and there is no solr.xml file in this directory.

# start solr [Hadoop @ nnode solr-5.3.0] $bin/solr startWaiting up to 30 seconds to see Solr running on port 8983 [/] Started Solr server on port 8983 (pid=3608) with the following command. Happy searching! [hadoop@nnode solr-5.3.0] $

View Web UI

3. Script introduction

[hadoop@nnode solr-5.3.0] $bin/solr-helpUsage: solr COMMAND OPTIONS where COMMAND is one of: start, stop, restart, status, healthcheck, create, create_core, create_collection, delete Standalone server example (start Solr running in the background on port 8984):. / solr start-p 8984 SolrCloud example (start Solr running in SolrCloud mode using localhost:2181 to connect to ZooKeeper) With 1g max heap size and remote Java debug options enabled):. / solr start-c-m 1g-z localhost:2181-a "- Xdebug-Xrunjdwp:transport=dt_socket, server=y,suspend=n,address=1044" Pass-help after any COMMAND to see command-specific usage information Such as:. / solr start-help or. / solr stop-help [hadoop@nnode solr-5.3.0] $

Description: Solr has two operation modes, one is stand-alone mode, and the other is cluster mode (i.e. SolrCloud).

[hadoop@nnode solr-5.3.0] $bin/solr start-helpUsage: solr start [- f] [- c] [- h hostname] [- p port] [- d directory] [- z zkHost] [- m memory] [- e example] [- s solr.solr.home] [- a "additional-options"] [- V]-f Start Solr in foreground Default starts Solr in the background and sends stdout / stderr to solr-PORT-console.log-c or-cloud Start Solr in SolrCloud mode; if-z not supplied, an embedded ZooKeeper instance is started on Solr port+1000, such as 9983 if Solr is bound to 8983-h Specify the hostname for this Solr instance-p Specify the port to start the Solr HTTP listener on Default is 8983 The specified port (SOLR_PORT) will also be used to determine the stop port STOP_PORT= ($SOLR_PORT-1000) and JMX RMI listen port RMI_PORT= (1 $SOLR_PORT). For instance, if you set-p 8985, then the STOP_PORT=7985 and RMI_PORT=18985-d Specify the Solr server directory; defaults to server-z ZooKeeper connection string; only used when running in SolrCloud mode using-c To launch an embedded ZooKeeper instance, don't pass this parameter. -m Sets the min (- Xms) and max (- Xmx) heap size for the JVM, such as:-m 4G results in:-Xms4g-Xmx4g; by default, this script sets the heap size to 512m-s Sets the solr.solr.home system property, the default value is server/solr. Solr will create core directories under this directory. This allows you to run multiple Solr instances on the same host while reusing the same server directory set using the-d parameter. If set, the specified directory should contain a solr.xml file, unless solr.xml exists in ZooKeeper.This parameter is ignored when running examples (- e), as the solr.solr.home depends on which example is run. -e Name of the example to run; available examples: cloud: SolrCloud example techproducts: Comprehensive example illustrating many of Solr's core capabilities dih: Data Import Handler schemaless: Schema-less example-an Additional parameters to pass to the JVM when starting Solr, such as to setup Java debug options. For example, to enable a Java debugger to attach to the Solr JVM you could pass:-a "- agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=18983" In most cases, you should wrap the additional parameters in double quotes. -noprompt Don't prompt for input; accept all defaults when running examples that accept user input-V Verbose messages from this script [hadoop@nnode solr-5.3.0] $

4 、 Start Solr with a Specific Example Configuration

[hadoop@nnode solr-5.3.0] $bin/solr-f-e techproductsWARNING: Foreground mode (- f) not supported when running examples.Creating Solr home directory / lucl/solr-5.3.0/example/techproducts/solrStarting up Solr on port 8983 using command:bin/solr start-p 8983-s "example/techproducts/solr" Waiting up to 30 seconds to see Solr running on port 8983 [/] Started Solr server on port 8983 (pid=4436). Happy searching! Setup new core instance directory:/lucl/solr-5.3.0/example/techproducts/solr/techproducts// outline

View statu

[hadoop@nnode solr-5.3.0] $bin/solr statusFound 1 Solr nodes: Solr process 4436 running on port 8983 {"solr_home": "/ lucl/solr-5.3.0/example/techproducts/solr/", "version": "5.3.0 1696229-noble-2015-08-17 17:10:43", "startTime": "2016-01-24T13:44:41.338Z", "uptime": "0 days, 0 hours, 3 minutes, 3 seconds" "memory": "34.6 MB (% 7) of 490.7 MB"} [hadoop@nnode solr-5.3.0] $

5. Web access

Http://nnode:8983/solr

6 、 Create a Core

[hadoop@nnode solr-5.3.0] $bin/solr create-helpUsage: solr create [- c name] [- d confdir] [- n configName] [- shards #] [- replicationFactor #] [- p port] Create a core or collection depending on whether Solr is running in standalone (core) or SolrCloud mode (collection). In other words, this action detects which mode Solr is running in, and then takes the appropriate action (either create_core or create_collection). For detailed usage instructions, do: bin/solr create_core-help or bin/solr create_collection-help [hadoop@nnode solr-5.3.0] $

Description:

Core: namely Solr Core, a Solr contains one or more Solr Core, each Solr Core can provide indexing and query functions independently, and each Solr Core corresponds to an index or Collection Shard,Solr Core is proposed to increase management flexibility and share resources. One difference in SolrCloud is that the configuration it uses is in Zookeeper, while the traditional Solr core configuration file is in the configuration directory on disk.

Collection: a logically complete index in a SolrCloud cluster. It is often divided into one or more Shard that use the same Config Set. If there is more than one Shard, it is a distributed index, and SolrCloud allows you to refer to it by Collection name, regardless of the parameters related to Shard used in distributed retrieval.

Shard: logical fragmentation of Collection. Each Shard is transformed into one or more replicas, which is elected to determine which is Leader.

Replica: a copy of Shard. Each Replica exists in a Core of the Solr.

[hadoop@nnode solr-5.3.0] $bin/solr create-c testcore

7. Add data

Solr supports uploading data in many formats, such as CSV, JSON, XML, etc. Select Documents under testcore.

8. Data query

Multiple conditional data queries can be performed through the Web page of Solr. Select Query under testcore.

9. Stop the service

[hadoop@nnode solr-5.3.0] $bin/solr stop-helpUsage: solr stop [- k key] [- p port] [- V]-k Stop key; default is solrrocks-p Specify the port the Solr HTTP listener is bound to-all Find and stop all running Solr servers on this host NOTE: To see if any Solr servers are running, do: solr status [hadoop@nnode solr-5.3.0] $

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.