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

First, install JDK

1.1 download and install

cd /usr/local/src

tar -zxvf jdk-8u131-linux-x64.tar.gz

mv jdk1.8.0_131 /usr/local/java

1.2 modify the configuration file

vim /etc/profile //last added

export JAVA_HOME=/usr/local/javaCLASSPATH=/usr/local/java/lib/dt.jar/usr/local/java/lib/tools.jarPATH=/usr/local/java/bin:$PATHexport PATH JAVA_HOMECLASSPATH

source /etc/profile //import configuration file

java -version //View java version

Second, install Elasticsearch

Official website: www.elastic.co/downloads

Reference: blog.csdn.net/u013365215/article/details/70159159

2.1 download and install

cd /usr/local/src/

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.4.0.tar.gz

tar -xvf elasticsearch-5.4.0.tar.gz

mv elasticsearch-5.4.0 /usr/local/

cd /usr/local/elasticsearch-5.4.0/

2.2 system tuning

1) Configure the maximum number of open file descriptors in the system

vim /etc/sysctl.conf

vm.max_map_count = 262144

Execute the following order effective

sysctl -p

2) Configure process maximum open file descriptor

vim /etc/security/limits.conf //file last

* soft nofile 65536* hard nofile 65536

2.3 Writing ES Master Node Profile

vim config/elasticsearch.yml

cluster.name my-esnode.name: 192.168.19.141http.port: 9200transport.tcp.port: 9300discovery.zen.ping.unicast.hosts: ["192.168.19.141","192.168.19.143"]discovery.zen.minimum_master_nodes: 2#Avoid cross-domain issues http.cors.enabled: truehttp. cors.allow-origin: "*" 192.168.19.142 node-1network.host

The configuration of the second and third nodes only needs to be modified to the corresponding ones.

2.4 Start ES

java.lang.RuntimeException: can not runelasticsearch as root

Since Elasticsearch 6.0 cannot be started with root account, we first create an elasticsearch group and account:

groupadd elsearch

useradd elsearch -g elsearch -p elasticsearch

chown -R elsearch.elsearch /usr/local/elasticsearch-5.4.0/

Background Start:

su - elsearch -c "/usr/local/elasticsearch-5.4.0/bin/elasticsearch -d"

2.5 Install the head open source plugin

Reference: blog.csdn.net/ronmy/article/details/63685254

Just install the plugin on the master. elasticsearch6 cannot be installed directly via plugin -install mobz/elasticsearch-head, and head needs to run in node environment. The specific steps are as follows:

Step 1: Install Node

curl -sL -o /etc/yum.repos.d/khara-nodejs.repohttps://copr.fedoraproject.org/coprs/khara/nodejs/repo/epel-7/khara-nodejs-epel-7.repo

yum install -y nodejs nodejs-npm

View installed version

Step 2: Install grunt

cd /usr/lib/node_modules/npm/

npm install grunt-cli

npm install grunt

View Version:

/usr/lib/node_modules/npm/node_modules/.bin/grunt -version

Step 3: Install the head

yum install -y git

cd /usr/local/

git clone git://github.com/mobz/elasticsearch-head.git

cd elasticsearch-head/

npm install

Note: There may be some error messages in this step, which can be ignored.

vim _site/app.js

#Modify http://localhost:9200 field to local ES port and IP

Step 4: Start head and run in background

./ node_modules/grunt/bin/gruntserver &

Browser access:

Note: If clusters cannot be formed, it may be iptables or selinux.

2.6 boot-up

vim /etc/rc.local

su - elsearch -c "/usr/local/elasticsearch-5.3.1/bin/elasticsearch -d"/usr/local/elasticsearch-head/node_modules/grunt/bin/grunt server &

After saving and exiting, grant execution permission to the bootloader file (if not added, Centos7 will not boot and execute)

chmod +x /etc/rc.d/rc.local

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