(1) Configuration JDK environment
Configuration environment variable
export JAVA_HOME="/opt/jdk1.8.0_144"
export PATH="$JAVA_HOME/bin:$PATH"
export CLASSPATH=".:$JAVA_HOME/lib"
(2) Installation ElasticSearch6.2.4
Download: https: //www.elastic.co/cn/downloads/elasticsearch
Start being given:
Solution: bin / elasticsearch -Des.insecure.allow.root = true
Or modify bin / elasticsearch, plus ES_JAVA_OPTS property: ES_JAVA_OPTS = "- Des.insecure.allow.root = true"
Start again:
This is due to the condition of the system security settings. Since ElasticSearch can receive user input and execute scripts, for system security reasons, we recommend creating a separate user to run ElasticSearch.
Creating user groups and users:
groupadd esgroup
useradd esuser -g esgroup -p espassword
Their user and group changes elasticsearch folders and files inside:
cd /opt
chown -R esuser:esgroup elasticsearch-6.2.4
Switch users and run:
its esuser
./bin/elasticsearch
Shows start killing again:
You need to adjust JVM memory size:
we bin / elasticsearch
ES_JAVA_OPTS="-Xms512m -Xmx512m"
Start again: successful start
If a similar message is shown below:
INFO [ZAds5FP] low disk watermark [85%] exceeded on ZAds5FPeTY-ZUKjXd7HJKA[/opt/elasticsearch-6.2.4/data/nodes/0] free: 1.2gb[14.2%], replicas will not be assigned to this node
You need to clean up disk space.
Background: ./ bin / elasticsearch -d
Test Connection: curl 127.0.0.1:9200
会看到一下JSON数据： [root@localhost ~]# curl 127.0.0.1:9200 { "name" : "rBrMTNx", "cluster_name" : "elasticsearch", "cluster_uuid" : "-noR5DxFRsyvAFvAzxl07g", "version" : { "number" : "5.1.1", "build_hash" : "5395e21", "build_date" : "2016-12-06T12:36:15.409Z", "build_snapshot" : false, "lucene_version" : "6.3.0" }, "tagline" : "You Know, for Search" }
Remote Access: the need to configure the config / elasticsearch.yml: network.host: 192.168.1.110
The first error handling:
vim /etc/security/limits.conf // file last to join
esuser soft nofile 65536
esuser hard nofile 65536
esuser soft nproc 4096
esuser hard nproc 4096
The second error handling:
Modify the configuration file into the limits.d directory.
vim /etc/security/limits.d/20-nproc.conf amended as esuser soft nproc 4096
The third error handling: vim /etc/sysctl.conf
vm.max_map_count=655360
Execute the following command to take effect: sysctl -p
Turn off the firewall: systemctl stop firewalld.service
Successful start again!
External access, remember to host yml file Kibana ES and configured to 0.0.0.0