SOLR cluster Solrcloud (solr+zookeeper) Windows build

What is Solrcloud?

Refer to the Solrcloud official website to introduce http://lucene.apache.org/solr/guide/6_6/solrcloud.html

Apache SOLR can set up SOLR clusters with fault-tolerant and high-availability capabilities, this is called Solrcloud, which provides distributed indexing and search, supports the following features:

• Centralized Central configuration

• Automatic load balancing and failover

• Zookeeper integration for cluster coordination and configuration.

Solrcloud is a flexible distributed search and indexing, without the primary node assigning nodes, shards, and replicas. Instead, SOLR uses zookeeper to manage these locations, depending on the configuration file and schema. queries and updates can be sent to any server. SOLR will use the information in the Zookeeper database to determine which servers need to process the request.

Solrcloud structure diagram

Zookeeper is required because of centralized configuration and coordination.

Zookeeper cluster installation

Install 3 ZK servers to do cluster localhost:2181,localhost:2182,localhost:2183.

install ZK, reference http://www.cnblogs.com/yangzhenlong/p/8270835.html

After installation, start 3 ZK.

Solrcloud Installation

Download SOLR http://mirrors.shu.edu.cn/apache/lucene/solr/

Unzip after download, name solr-1, enter \solr-1\bin directory

Need to do 3 operations

1. Configuring the Zookeeper Service

Modify Solr.in.cmd

REM set zk_host= is replaced by (here is the Zookeeper service address: port, separated by commas)

Set Zk_host=localhost:2181, localhost:2182, localhost:2183

REM set zk_client_timeout=15000 replaced by

Set zk_client_timeout=15000

2. Configure the SOLR port

Modify Solr.cmd, edit files, search solr_port=8983

Change Port to 8981

When you are done editing, copy the Solr-1 folder 3 points, named Solr-2,solr-3,solr-4

then modify the corresponding Solr.cmd file separately, set the port to 8982,8983,,8984

3. Upload SOLR's core configuration to zookeeper

Because ZK is required to govern SOLR in a unified governance, ZK is required to manage SOLR's configuration information.

Enter the \solr-1\server\scripts\cloud-scripts directory and see the client instruction file with ZK

Now you need to upload all the configuration in the \solr-1\server\solr\configsets\basic_configs\conf to the ZK service and execute the command:

Zkcli.bat-zkhost zk1:port,zk2:port-cmd upconfig-confdir SOLR conf directory-confname solrconf

For example:

Zkcli.bat-zkhost localhost:2181, localhost:2182, localhost:2183 -cmd upconfig-confdir d:\ develop-env\solr-cluster\solr-1\server\solr\configsets\basic_configs\conf-confname solrconf

After uploading, see if it is successful, connect to any ZK server with ZK client, view root path

Zkcli.cmd-server localhost:2181

LS/

Ls/configs

If we have the solrconf named above, the upload is successful.

Start SOLR

After Setup, use CMD to enter the bin directory of Solr-1, execute the command, then enter Solr-2/bin solr-3/bin Solr-4/bin respectively, and execute the following command as well:

SOLR start

Then access address http://localhost:8981/(or 8982 8983 8984)

Create SOLR Core

Create a new core, in the config set option, you can see the uploaded SOLR configuration

Select solrconf Configuration, numshards and replicationfact are filled 4, add Add button, will prompt error:

The last sentence says you need to 4*4=16 a shard, exceeding the allowable value. The rule is the number of Numshards * replicationfact number of <= Solrcloud in the SOLR service

Numshards and replicationfact are filled in 1 1 to create Core1

Numshards and Replicationfact are filled in 4 1 to create Core1

Numshards and replicationfact are filled in 1 4 to create Core1

Numshards and replicationfact are filled in 2 2 to create Core1

Then look at the Cloud

The black chosen is the leader elected by ZK.

Access to other SOLR, the same effect

SOLR cluster Solrcloud (solr+zookeeper) Windows build