Centos7.3 deployment Elasticsearch5.4.0 cluster
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
