How to Install Elasticsearch with Docker

Elasticsearch is a powerful search engine widely used for storing and searching data. It can handle large amounts of data and provide fast and accurate search results. Docker is a popular platform for running applications in a containerized environment. In this article, we will guide you through the process of installing Elasticsearch with Docker.

Table of Contents

1. Prerequisites
2. Install Docker
3. Install Elasticsearch with Docker
4. Verify Elasticsearch installation
5. Conclusion

Prerequisites:

Before we begin, make sure you have the following prerequisites installed on your system:

• A machine running a Linux distribution such as Ubuntu or CentOS.
• Docker installed on your system.
• Basic knowledge of Docker and Elasticsearch.

Install Docker:

To install Docker on your system, follow the steps below:

1. Update your package index by running the command:

sudo apt-get update

2. Install the dependencies needed by Docker using the command:

sudo apt-get install apt-transport-https ca-certificates curl software-properties-common

3. Add the Docker GPG key using the command:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

4. Add the Docker repository to your system:

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

5. Update your package index again:

sudo apt-get update

6. Finally, install Docker using the command:

sudo apt-get install docker-ce

Install Elasticsearch with Docker:

To install Elasticsearch with Docker, follow the steps below:

1. Pull the Elasticsearch Docker image from the official Docker Hub repository:

sudo docker pull docker.elastic.co/elasticsearch/elasticsearch:7.12.1

2. Create a Docker container from the Elasticsearch image:

sudo docker run -d --name elasticsearch -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:7.12.1

The above command creates a Docker container named "elasticsearch" and exposes ports 9200 and 9300, which are the default ports used by Elasticsearch. It also sets the "discovery.type" parameter to "single-node", which tells Elasticsearch that it is running in a single node cluster.

Verify Elasticsearch installation:

To verify that Elasticsearch is installed and running correctly, follow the steps below:

1. Open a web browser and enter the following URL:

http://localhost:9200

If Elasticsearch is running correctly, you should see a JSON response containing information about the Elasticsearch cluster.

2. You can also verify Elasticsearch by running the following command:

sudo docker ps

This command shows a list of running Docker containers, including the Elasticsearch container.

In this article, we have shown you how to install Elasticsearch with Docker. With Docker, you can quickly and easily deploy Elasticsearch on any machine without worrying about dependencies or configurations. We hope you found this article helpful and informative. If you have any questions or feedback, feel free to leave a comment below.

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That's it for this post. Keep practicing and have fun. Leave your comments if any.