How to Install Elasticsearch on OpenBSD

Elasticsearch is an open-source, distributed search and analytics engine that helps you in searching your entire data. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. In this tutorial, we will guide you through the steps of installing Elasticsearch on OpenBSD.

Prerequisites

• OpenBSD installed
• Superuser privileges

Step 1: Installing Java

The first step before installing Elasticsearch is to install Java on your OpenBSD system. Elasticsearch requires Java version 8 or higher in order to run properly. To install Java, run the following command:

$ doas pkg_add jdk

Step 2: Downloading Elasticsearch

You can download the latest Elasticsearch from the official website https://www.elastic.co/. Download the .tar.gz archive.

$ cd /tmp
$ ftp https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.15.1-linux-x86_64.tar.gz

Step 3: Extracting Elasticsearch

After downloading the Elasticsearch archive, extract it using the following command:

$ tar -zxvf elasticsearch-7.15.1-linux-x86_64.tar.gz

This will create a new directory called elasticsearch-7.15.1 in the /tmp directory.

Step 4: Configuring Elasticsearch

Next, you need to edit the elasticsearch.yml configuration file to set some options. Open the file with your preferred text editor.

$ cd /tmp/elasticsearch-7.15.1/config
$ vi elasticsearch.yml

Here are some important settings:

cluster.name: my_cluster
node.name: my_node
network.host: 0.0.0.0
http.port: 9200
discovery.type: single-node

The cluster.name parameter specifies the name of the cluster. The node.name parameter specifies the name of the Elasticsearch node. The network.host parameter specifies the IP address to bind Elasticsearch to. The http.port parameter specifies the port to listen on for HTTP traffic. The discovery.type parameter specifies whether to form a cluster with other nodes in the same network.

Step 5: Starting Elasticsearch

Now that your Elasticsearch instance is configured, you can start it by running the following command:

$ cd /tmp/elasticsearch-7.15.1/bin
$ ./elasticsearch &

This will start Elasticsearch in the background. You can verify that Elasticsearch is running by checking the logs:

$ tail -f /tmp/elasticsearch-7.15.1/logs/elasticsearch.log

Step 6: Testing Elasticsearch

You can test your Elasticsearch installation by opening a web browser and going to http://localhost:9200/. You should see a JSON response that looks like this:

{
  "name" : "my_node",
  "cluster_name" : "my_cluster",
  "cluster_uuid" : "gqfLqV8nQjKzQa29V_eM9Q",
  "version" : {
    "number" : "7.15.1",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "83c34f456ae29d60e94d886e455e6a3409bba9ed",
    "build_date" : "2021-10-07T21:56:19.031608185Z",
    "build_snapshot" : false,
    "lucene_version" : "8.10.2",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

Conclusion

In this tutorial, we showed you how to install Elasticsearch on OpenBSD. Elasticsearch is a powerful tool that can help you search and analyze large amounts of data. If you have any questions or need further assistance, please refer to the Elasticsearch documentation.

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