Shulou(Shulou.com)06/01 Report--

Elasticsearch is a distributed search service, which provides Restful API, the underlying layer is based on Lucene, uses multi-shard to ensure data security, and provides the function of automatic resharding. Github and other large sites also use Elasticsearch as their search service. I will not repeat the nonsense here. Here is a record of the deployment process of Elasticsearch cluster under CentOS7:

1) basic information

Elk-es01.kevin.cn 192.168.10.44

Elk-es02.kevin.cn 192.168.10.45

Elk-es03.kevin.cn 192.168.10.46

The following operations are performed on all three node machines.

[root@elk-es01 ~] # systemctl stop firewalld.service

[root@elk-es01 ~] # systemctl disable firewalld.service

[root@elk-es01] # firewall-cmd-- state

Not running

[root@elk-es01 ~] # setenforce 0

Setenforce: SELinux is disabled

[root@elk-es01 ~] # getenforce

Disabled

[root@elk-es01 ~] # vim / etc/sysconfig/selinux

.

SELINUX=disabled

[root@elk-es01 ~] # cat / etc/hosts

.

192.168.10.44 elk-es01.kevin.cn

192.168.10.45 elk-es02.kevin.cn

192.168.10.46 elk-es03.kevin.cn

[root@elk-es01 ~] # / usr/sbin/ntpdate ntp1.aliyun.com

2) install java8 environment. It is officially recommended that version 5.4 should be at least Java 8 or above (all three node machines should be operated)

Extract the file to / opt/

Jdk-8u121-linux-x64.tar.gz

Configure environment variables

# vim / etc/profile

# * DMP JAVA ENV*

Export JAVA_HOME=/opt/jdk1.8.0_121

Export PATH=$PATH:$JAVA_HOME/bin:$JAVA_HOME/jre/bin

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

3) install elasticsearch (all three node machines should be operated)

Create users, user groups

# groupadd es

# useradd es-g es-p 123456

# chown-R es:es / opt/els-node1

# chown-R es:es / opt/els-node2

# chown-R es:es / opt/els-node3

Create a data directory and log directory

# mkdir-p / opt/els-data/ {data1,log1}

# mkdir-p / opt/els-data/ {data2,log2}

# mkdir-p / opt/els-data/ {data3,log3}

# chown-R es:es / opt/els-node*

Optimization system

one,

# cd / etc [root@localhost etc]

# cp sysctl.conf sysctl.conf.bak

# vim sysctl.conf

# elasticsearch config start

Vm.max_map_count=262144

# elasticsearch config end

# sysctl-p

two,

# cd / etc/security/

Cp limits.conf limits.conf.bak

Then edit limits.conf to add the following configuration:

# elasticsearch config start

* soft nofile 65536

* hard nofile 131072

* soft nproc 2048

* hard nproc 4096

# elasticsearch config end

Download the installation package

# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.0.zip

Configure els

Node-1

Node.name: node-1

Path.data: / opt/els-data/data1

Path.logs: / opt/els-data/logs1

Network.host: 192.168.15.143

Transport.tcp.port: 9301

Http.port: 9201

Discovery.zen.ping.unicast.hosts: ["192.168.15.143", "192.168.15.143", "192.168.15.143"]

Http.cors.enabled: true

Http.cors.allow-origin: "*"

Node-2

Node.name: node-2

Path.data: / opt/els-data/data2

Path.logs: / opt/els-data/logs2

Network.host: 192.168.15.143

Transport.tcp.port: 9302

Http.port: 9202

Discovery.zen.ping.unicast.hosts: ["192.168.15.143", "192.168.15.143", "192.168.15.143"]

Http.cors.enabled: true

Http.cors.allow-origin: "*"

Node-3

Node.name: node-3

Path.data: / opt/els-data/data3

Path.logs: / opt/els-data/logs3

Network.host: 192.168.15.143

Transport.tcp.port: 9303

Http.port: 9203

Discovery.zen.ping.unicast.hosts: ["192.168.15.143", "192.168.15.143", "192.168.15.143"]

Http.cors.enabled: true

Http.cors.allow-origin: "*"

Start the service

. / bin/elasticsearch-d

Test:

Curl "192.168.15.143purl 9203"

{

"name": "node-3"

"cluster_name": "elasticsearch"

"cluster_uuid": "5HJLIt_5Ra26HHs4vNRQuA"

"version": {

"number": "6.3.0"

"build_flavor": "default"

"build_type": "zip"

"build_hash": "424e937"

"build_date": "2018-06-11T23:38:03.357887Z"

"build_snapshot": false

"lucene_version": "7.3.1"

"minimum_wire_compatibility_version": "5.6.0"

"minimum_index_compatibility_version": "5.0.0"

}

"tagline": "You Know, for Search"

}

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