How to Install Elasticsearch on NetBSD

In this tutorial, we will be installing Elasticsearch on NetBSD. Elasticsearch is a search and analytics engine used for full-text search and other applications like web search and log analytics. Elasticsearch is a powerful and scalable solution for indexing and searching data.

Requirements

A NetBSD operating system
Java 8 or above

Installing Java

Before installing Elasticsearch, Java must be installed on your NetBSD system. You can check if Java is already installed using the following command:

java -version

If Java is not installed, run the following command:

pkgin install openjdk11

This command will install Java 11 on your NetBSD system.

Installing Elasticsearch

Once Java is installed, we can proceed to install Elasticsearch using the following steps:

Open the terminal and execute the following command to download Elasticsearch:

curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.12.1-linux-x86_64.tar.gz

Extract the downloaded file using the following command:
```
tar -xvf elasticsearch-7.12.1-linux-x86_64.tar.gz
```
Move the extracted folder to /usr/share using the following command:
```
sudo mv elasticsearch-7.12.1 /usr/share/elasticsearch
```
Elasticsearch requires a user to run the service. Therefore, create a new user named elasticsearch with the following command:
```
sudo adduser elasticsearch
```
Change the ownership of the Elasticsearch directory to elasticsearch user:
```
sudo chown -R elasticsearch:elasticsearch /usr/share/elasticsearch
```
Elasticsearch requires max_map_count sysctl value to be set to at least 262144. Run the following command to set it:
```
sudo sysctl -w vm.max_map_count=262144
```

Starting Elasticsearch

To start Elasticsearch as a background process run the following:

sudo -u elasticsearch /usr/share/elasticsearch/bin/elasticsearch -d -p pid

You can check the status of Elasticsearch by running:

sudo -u elasticsearch /usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec status

Conclusion

In this tutorial, we have successfully installed and configured Elasticsearch on NetBSD. Elasticsearch is now ready to be used for your search and analytical needs.