linux install es

Create a user

5.0 beginning, ElasticSearch improve the security level is not allowed to start using the root account, so we have to add a user

1 Create a user group elasticsearch

root@localhost ~]# groupadd elasticsearch

2 Create a user and set a password for es es

[root@localhost ~]# useradd es
[root@localhost ~]# passwd es

3 es added to the user group of the user elasticsearch

[root@localhost ~]# usermod -G elasticsearch es

4 Set sudo permissions

[root@localhost ~]# visudo

In the root ALL = (ALL) ALL line below

Es add user as follows:

es ALL=(ALL) ALL

After the addition was successfully saved to switch a user operation es

[root@localhost ~]# su es
[es@localhost root]$

Download the installation package

[es@localhost src]$ wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.5.2.tar.gz

[es@localhost src]$ tar -xvf elasticsearch-5.5.2.tar.gz

Unzip the file to / usr / local

[es@localhost src]$ sudo mv elasticsearch-5.5.2 /usr/local

Change their user elasticsearch-5.5.2 folder and internal file is es, the user group group elasticsearch, -R represents a stepwise

[es@localhost local]$ sudo chown -R es:elasticsearch elasticsearch-5.5.2

ElasticSearch Configuration

elasticsearch.yml 修改

[es @ localhost elasticsearch-6.3.2] $ vim config / elasticsearch.yml 

cluster.name: My-the Application 

node.name: the Node-1 

network.host: 0.0.0.0 

http.port: 9200 

# because Centos6 does not support SecComp, The ES is the default bootstrap.system_call_filter detection to true 

bootstrap.memory_lock: false 
bootstrap.system_call_filter: false

Modify /etc/sysctl.conf 

Switch back to root user

vim /etc/sysctl.conf

Add content in the final surface file:

vm.max_map_count=262144

Save and exit, use sysctl -p to refresh the effect.

Modify the file /etc/security/limits.conf

vim /etc/security/limits.conf

Add the following:

Hard nofile 65536 
soft nofile 65536 
soft nproc 2048 
hard nproc 4096

Start elasticesearch may also report the following error

max number of threads [1024] for user [lish] likely too low, increase to at least [4096]

Solution: Switch to the root user, enter limits.d directory to modify configuration files.

we /etc/security/limits.d/90-nproc.conf

Modify the following:

soft nproc 1024

#change into

soft nproc 4096

Start elasticsearch

After completing the above configuration changes, the user switch to es, change the directory to perform the installation directory elasticsearch

bin/elasticsearch

In the browser, enter localhost: 9200 Verify started successfully, if the browser output following information represents the installation starts successfully

Elasticsearch command in the Linux SH elasticsearch Start , keys ctrl + c when the program will stop off, how to program it started in the background? 
Need to use: ./ elasticsearch -d 
when executed at this time there will be no authority ./elasticsearch: Permission denied 
authorization is required to perform the command: chmod + x bin / elasticsearch 
executed again ./elasticsearch -d to start 
using ps aux | grep elasticsearch see if you can start 

If an exception message appears during startup, according to the message Baidu related issues, the following is the error message encountered during startup along with my solutions

Exception information 1: expecting token of type [START_OBJECT ] but found [VALUE_STRING]]; 
Cause of error: Internal elasticsearch.yml file error 
Solution: Carefully check yml file configuration items written format: (space) name :( space) value 
-------------------------------------------------- ------------------------------- 
exception information 2: java.lang.UnsupportedOperationException: seccomp unavailable: CONFIG_SECCOMP not compiled into kernel, CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER are needed 
wrong reasons: Centos6 does not support SecComp, while ES default bootstrap.system_call_filter detection to true, resulting in detection failure led directly to the ES can not be started after the failure 
solution: modify elasticsearch.yml add about content: 
bootstrap.memory_lock : false 
bootstrap.system_call_filter: false 
------------------------------------------- --------------------------------------
-------------------------------------------------- ------------------------------- 
exception information 3: BindTransportException [Failed to bind to [9300-9400] 
solution to open the configuration file elasticsearch.yml will network.host: 192.168.0.1 0.0.0.0 modify native IP 
------------------------------ -------------------------------------------------- ------------ 
exception information 4: max number of threads [1024 ] for user [lish] likely too low, increase to at least [2048] 
solution: switch to root into limits. modify the configuration file d directory. 
vi /etc/security/limits.d/90-nproc.conf 
modify the following: 
* Soft nproc 1024 
# amended as 
* soft nproc 2048