Shulou(Shulou.com)06/03 Report--

Environment CentOS7

JDK1.8 is installed

The elasticsearch6.2.2 used here as an example, you can also use version 5.6.1 or higher

1. It is best to extract ElasticSearch with non-root users. If you use root users, otherwise, the permissions and groups of files will be transferred to non-foot users in the future.

1) decompress elasticsearch-5.2.2.tar.gz to / opt/module directory

[root@hdp21 ~] # su asy

[asy@hdp21 root] $tar-zxvf elasticsearch-5.2.2.tar.gz-C / opt/module

2) create data and logs folders under the / opt/module/elasticsearch-5.2.2 path

Mkdir data

Mkdir logs

If you use a root account, please add a non-root account first, because elaticsearch cannot be run under a root account

User add asy

Chown-R asy:asy / opt/module/elasticsearch-5.2.2/

3) modify configuration file / opt/module/elasticsearch-5.2.2/config/elasticsearch.yml for root account

[root@hdp21 config] # pwd

/ opt/module/elasticsearch-5.2.2/config

[root@hdp21 config] # vi elasticsearch.yml

Modify the following parameters

-- Cluster--

Cluster.name: Asy

-- Node-- (three cannot be the same)

Node.name: node-1

-- Paths--

Path.data: / opt/module/elasticsearch-5.2.2/data

Path.logs: / opt/module/elasticsearch-5.2.2/logs

-- Memory--

Bootstrap.memory_lock: false

Bootstrap.system_call_filter: false

-- Network--

Network.host: hdp21

Http.port: 9200

-- Discovery--

Discovery.zen.ping.unicast.hosts: ["hdp21"]

Path.data

Paths to path.logs data and logs

Network.host ip address or host domain name address

Http.port port number

5) configure linux system environment (refer to:

(1) Edit limits.conf and add something like the following

[root@hdp21 config] # vi / etc/security/limits.conf

Add the following:

Soft nofile 65536hard nofile 131072soft nproc 2048hard nproc 4096

(2) go to the limits.d directory to modify the configuration file.

[root@hdp21 config] # vi / etc/security/limits.d/20-nproc.conf

Modify the following: if it exceeds 2048, you do not need to modify soft nproc 1024.

# modified to soft nproc 2048

(3) modify the configuration sysctl.conf

[root@hdp21 config] # vi / etc/sysctl.conf

Add the following configuration:

Vm.max_map_count=655360

Go back to the previous directory

And execute the command:

[root@hdp21 config] # cd..

[root@hdp21 elasticsearch-5.2.2] # pwd

/ opt/module/elasticsearch-5.2.2

[root@hdp21 elasticsearch-5.2.2] # sysctl-p

Then, restart elasticsearch to start successfully.

6) start elasticsearch

[asy@hdp21 elasticsearch-5.2.2] $bin/elasticsearch

Background startup mode

[asy@hdp21 elasticsearch-5.2.2] $bin/elasticsearch-d

7) Test elasticsearch

[root@hdp21 ~] # curl http://hdp21:9200

{

"name": "node1"

"cluster_name": "Asy"

"cluster_uuid": "8T7xJ-NLTbmYHOPKa3a4tA"

"version": {

"number": "5.2.2"

"build_hash": "f9d9b74"

"build_date": "2017-02-24T17:26:45.835Z"

"build_snapshot": false

"lucene_version": "6.4.1"

}

"tagline": "You Know, for Search"

}

When performing bin/elasticsearch

If there is an error report of max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]

This corresponds to v/etc/security/limits.conf.

Soft nofile 65536

It has been modified, why not take effect?

Just re-enter the non-root user

Google browser debugging Elastic Search

Open more tools, extend programs, and open developer mode

Drag elasticsearch-head.crx into the browser window to complete the plug-in installation successfully

Enter http://192.168.234.21:9200/

Where 192.168.234.21 is the IP address of the linux host and 9200 is the port number

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