Shulou(Shulou.com)06/03 Report--

This article shows you the operation process of Elasticsearch7.3 installation and configuration, which is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

1. Installation of jdk

1. Download jdk

.JDK download address: click to download directly to the official website, please add a link description

two。 Extract and install

Tar-zxvf jdk-11.0.4_linux-x64_bin.tar.gz

Mkdir-p / usr/local/jdk/

Mv jdk-11.0.4 / usr/local/jdk/

3. Configure environment variables

Vi / etc/profile

Export JAVA_HOME=/usr/local/jdk/jdk-11.0.4

Export PATH=$JAVA_HOME/bin:$PATH

Export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib

4. Compile

Source / etc/profile

5. View

Java-version

II. Es installation and configuration

1. download

Wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.3.0-linux-x86_64.tar.gz

two。 Decompression

Tar-zxvf elasticsearch-7.3.0-linux-x86_64.tar.gz

Create a new account and authorize

Elasticsearch # requires that it cannot be run with superuser root, so we set up a test account

Groupadd testes

Useradd testesuser-g testes-p 123456 then authorizes the elasticsearch directory to the testesuser user. Chown-R testesuser:testes / usr/local/es/ changes to the elasticsearch directory and runs su testesuser as the testesuser user, which is specifically used for es operations, such as start, pause, etc. 4. The startup service goes to the bin folder under the es installation directory to run elasticsearch. If you want to run it in the background, adding-dmenes will start http port 9200 and tcp 9300 port 5 by default. Add firewall-cmd-- zone=public-- add-port=9200/tcp-- permanent firewall-cmd-- zone=public-- add-port=9300/tcp-- permanent firewall-cmd-- reload6. Test method 1 is tested directly through the browser

Method 2 curl test

Curl http://localhost:9200

III. Description of directory structure

Home directory: represented by $ES_HOME

Bin/: location $ES_HOME/bin, which contains scripts such as elasticsearch and elasticsearch-plugin

Conf/: location $ES_HOME/config, which contains the configuration files elasticsearch.yml and log4j2.properties, specified using path.conf

Data/: location $ES_HOME/data, which contains the data file for each index/shard. You can specify multiple locations, using path.data.

Logs/: location $ES_HOME/logs, specified using path.logs

Plguins/: location $ES_HOME/plugins

Repo/: specified using path.repo, there is no default location, which represents the location of the shared file system repository. You can specify multiple locations.

Script/: location $ES_HOME/scripts, specified using path.scripts.

Fourth, start the service to report and solve the error.

1.curl port error

. Curl http://192.168.43.96:9200 refuses to connect

The default is 127.0.0.1, and the configuration file needs to be modified.

Network.host: 192.168.43.96

Http.port: 9200

2.ERROR: bootstrap checks failed

Max file descriptors [10240] for elasticsearch process likely too low, increase to at least [65536]

Switch to root user

Vi / etc/security/limits.conf

# add the following:

Soft nofile 65536

Hard nofile 131072

Soft nproc 4096

Hard nproc 4096

Modify / etc/sysctl.conf

# add the following configuration:

Vm.max_map_count=655360

Execute the command:

Sysctl-p

Note: if an exception is still prompted

Max file * *

Max number * *

Max virtual * *

It can be solved by adjusting the parameters of the above file according to the prompt.

Sysctl-p execute this command after saving

3.the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured

Modify XX-nproc.conf (different machines have different XX, you can check cd / etc/security/limits.d/ first)

Vi / etc/security/limits.d/20-nproc.conf* soft nproc 4096 (changed to 4096, originally 1024) add configuration items to elasticsearch.yml: bootstrap.system_call_filter is false:bootstrap.memory_lock: falsebootstrap.system_call_filter: falsecluster.initial_master_nodes: ["node-1"] the above is the operation process of Elasticsearch7.3 installation and configuration. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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