elasticsearch-deployment's Introduction

Single Node Elasticsearch-Deployment

This Deployment creates a single node elasticsearch cluster with TLS encryption and secure communication enabled. To generate the default passwords for the native elastic stack users one needs to run the elasticsearch utility present in the /usr/share/elasticsearch/bin directory.

   Command to generate passwords - ./elasticsearch-setup-passwords auto|interactive

Auto mode will generate random passwords for the users
Interactive mode will let user set custom passwords

Node will be accessible through AWS Systems Manager. There is no need to create a bastion/Jump host to login into the server.

Project Directory Structure

   Single-Node ES Cluster
          |
          |__Packer
          |     |
          |     |__files
          |     |     |__elasticsearch.repo
          |     |__scripts     
          |     |     |__elasticsetup.sh
          |     |     |__javasetup.sh
          |     |__amazonlinux2_ami.json
          |
          |__Terraform
                |
                |__main.tf
                |__provider.tf
                |__variables.tf
                |__terraform.tfvars

Tools Used

Packer - To create the pre-baked AMI containing elasticsearch installation and configs.

Base Image - Amazon Linux2

AWS Region - us-east-1

Jdk - Amazon Correto 11

Elasticsearch Version - 7.10
```
Command to generate AMI - packer build amazonlinux2_ami.json
```

Terraform - To provision the system in AWS.

Steps to provision the infrastucture on AWS

1.  Go to terraform directory
2.  Initialize the terraform working directory
        terraform init 
3.  Create a terraform execution plan
        terraform plan -out tfplan
4.  Apply the changes to create the desired state 
        terraform apply tfplan

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