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

Environmental preparation:

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

Refer to the previous single-node mode

Https://blog.51cto.com/6989066/2334006

(1) first confirm whether the SSH is connected between the slave node and the master node, that is, confirm that password-free login has been configured between the nodes.

And then use the

Scp-r / opt/module/elasticsearch-5.2.2 root@hdp22:/opt/module/elasticsearch-5.2.2

Scp-r / opt/module/elasticsearch-5.2.2 root@hdp23:/opt/module/elasticsearch-5.2.2

.

Copy to multiple slave nodes

Where root is the user name of the target node, and hdp22 is the hostname of the target node. I have already configured this in / etc/hosts, or you can use the IP address instead. It is recommended to use hostname.

(2) modify the elasticsearch.yml under the / opt/module/elasticsearch-5.2.2/config directory

Be careful

1. Line 17 cluster name, this must be the same

2.23 line node.name. This different node must be different.

3. Modify line 44pm 45 in Memery.

-- Memory--

Bootstrap.memory_lock: false

Bootstrap.system_call_filter: false

4. Modify about 57, 61, and 70 lines. 57 lines of domain names, you can check the host name through the hostname command; 61 lines of port numbers, 70 lines of cluster nodes.

(3) modify the configuration file under the etc directory with the root account on the slave node

Sudo vi / etc/security/limits.conf

Sudo vi / etc/security/limits.d/20-nproc.conf (not necessarily at the beginning of 20)

Sudo vi / etc/sysctl.conf

And execute the command: sudo sysctl-p

Then, restart elasticsearch to start successfully.

To modify the configuration file, please refer to the previous elasticsearch single-node configuration.

Https://blog.51cto.com/6989066/2334006

(4) start elasticsearch on multiple nodes

Bin/elasticsearch

Background startup mode

[itstar@hadoop105 elasticsearch-5.6.1] $bin/elasticsearch-d

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