Elasticsearch 5 Cluster

1 Preparatory work

/etc/profile Add vim highlighting

Export ps1= "\[\e]0;\a\]\n\[\e[1;32m\]\[\e[1;33m\]\h\[\e[1;35m\]<\$ (date +\"%y-%m-%d%t\ ") > \[\e[32m\]\w\[\e[ 0m\]\n\u>\\$ "

Server information:

192.168.91.220 (elasticsearch-node1) 192.168.91.221 (elasticsearch-node2) 192.168.91.222 (ELASTICSEARCH-NODE3)

1.1 Installing the Java environment

Yum Install vim openssh-clients lrzsz-y

Yum Install JAVA-1.8.0-OPENJDK java-1.8.0-openjdk-devel-y

It is java-1.8.0-openjdk-devel not necessary to install this, but the Java compiler (JAVAC) may be required to install the plug-in later, so it is recommended to install it in advance.

Verify version:

220.ELK.NODE0.COM<2016-12-13 12:02:42> ~root># java-versionopenjdk Version "1.8.0_111" OpenJDK Runtime Environment (build 1.8.0_111-b15) OpenJDK 64-bit Server VM (build 25.111-b15, Mixed mode)

1.2 Configuring the Yum source for ES

Import Signature:

RPM--import Https://artifacts.elastic.co/GPG-KEY-elasticsearch

Set Yum source

[elasticsearch-5.x]
Name=elasticsearch repository for 5.x packages
Baseurl=https://artifacts.elastic.co/packages/5.x/yum
Gpgcheck=1
Gpgkey=https://artifacts.elastic.co/gpg-key-elasticsearch
Enabled=1
Autorefresh=1
Type=rpm-md

Elastic Stack related products need to use this source.

1.3 Operating System Configuration

The official provides the Elasticsearch operating system in the production environment related recommendations, see here

1.  cross-domain support adds the following configuration to the Elasticsearc.yml Master profile http.cors.enabled: truehttp.cors.allow-origin:  "*" Based on official website recommendations Question two:  max number of threads [1024] for user [elasticsearch] is  TOO LOW, INCREASE TO AT LEAST [2048] Workaround: Go to configuration file under LIMITS.D: vim /etc/ security/limits.d/90-nproc.conf , modify the configuration as follows:vim /etc/security/limits.d/90-nproc.conf*           soft    nproc     1024    modified to:  *          soft     nproc     2048   question three: max file descriptors [64000]  for elasticsearch process is too low, increase to at least  [65536] Workaround: 1, virtual memory settings, edit  /etc/sysctl.conf , append: vm.max_map_count=2621442, modify file handle limit, edit  /etc/ security/limits.conf , append: root># vim /etc/security/limits.conf *    soft nofile 65536*     hard nofile 65536 problem Four: elasticsearch5.0 start failure, the following prompt appears: 1, Java hotspot (TM)  64-bit server vm warning: info: os::commit_memory (0x0000000085330000,  2060255232, 0)  failed; error= ' cannot allocate memory '   (errno=12) Modify JVM space allocation because elasticsearch5.0 allocates JVM space size to 2g by default # vim config/jvm.options  -xms2g  - xmx2g   modified to   -xms512m  -xmx512m

2, Elasticsearch installation

NODE0 deployment

220.ELK.INZWC.COM<2016-12-13 12:21:06> ~
root># Useradd Elasticsearch

220.ELK.INZWC.COM<2016-12-13 12:22:40> ~
root># Chown-r elasticsearch:elasticsearch/opt/elasticsearch-node0/

root># TAR-ZXVF elasticsearch-5.0.2.tar.gz-c/opt/

root># cd/opt

root># MV elasticsearch-5.0.2 elasticsearch-node0

Modify Configuration

root># cat/opt/elasticsearch-node0/config/elasticsearch.yml
network.host:0.0.0.0
http.port:9200
Http.cors.enabled:true
Http.cors.allow-origin: "*"
#cluster
Cluster.name: "Es-cluster"
Node.name: "Es-node0"
Node.master:true
Node.data:true
Http.enabled:true

Node1 Deployment

221.ELK.INZWC.COM<2016-12-13 12:21:10> ~
root># Useradd Elasticsearch

221.ELK.INZWC.COM<2016-12-13 12:21:24> ~
root># Chown-r elasticsearch:elasticsearch/opt/elasticsearch-node1/

220.ELK.NODE0.COM<2016-12-13 12:04:43>/opt
root># SCP-RP elasticsearch-node0/[email protected]:/opt/elasticsearch-node1

221.ELK.NODE1.COM<2016-12-13 12:07:32>/opt/elasticsearch-node1/config
root># cat/opt/elasticsearch-node1/config/elasticsearch.yml
network.host:0.0.0.0
http.port:9200
Http.cors.enabled:true
Http.cors.allow-origin: "*"
#cluster
Cluster.name: "Es-cluster"
Node.name: "Es-node1"
Node.master:true
Node.data:true
Http.enabled:true

PS : Node.name

Node2 deployment

222.ELK.INZWC.COM<2016-12-13 12:21:15> ~
root># Useradd Elasticsearch

222.ELK.INZWC.COM<2016-12-13 12:23:20> ~
root># Chown-r elasticsearch:elasticsearch/opt/elasticsearch-node2/

220.ELK.NODE0.COM<2016-12-13 12:04:43>/opt
root># SCP-RP elasticsearch-node0/[email protected]:/opt/Elasticsearch-node2

222.ELK.NODE2.COM<2016-12-13 12:07:32>/opt/elasticsearch-node3/config
root># cat/opt/elasticsearch-node2/config/elasticsearch.yml
network.host:0.0.0.0
http.port:9200
Http.cors.enabled:true
Http.cors.allow-origin: "*"
#cluster
Cluster.name: "Es-cluster"
Node.name: "Es-node2"
Node.master:true
Node.data:true
Http.enabled:true

PS : Node.name

Elasticsearch 5 Cluster