MyObservability

OpenSearch Lab setup

You can install OpenSearch in your docker environment

I have steup the lab in Fedora which already have docker installed

Step 1: Ensure vm.max_map_count is set to at least 262144

sudo swapoff -a
echo "vm.max_map_count=262144" | sudo tee -a /etc/sysctl.conf
sudo sysctl -p

Step 2: Create a folder as per your convinence

Step 3: create a simple docker-compose.yml

Note: Change password field

services:
  opensearch-node1:
    image: opensearchproject/opensearch:latest
    container_name: opensearch-node1
    environment:
      - cluster.name=opensearch-cluster
      - node.name=opensearch-node1
      - discovery.type=single-node
      - bootstrap.memory_lock=true
      - OPENSEARCH_JAVA_OPTS=-Xms1g -Xmx1g
      - OPENSEARCH_INITIAL_ADMIN_PASSWORD=<<Your password>>
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536
        hard: 65536
    volumes:
      - opensearch-data1:/usr/share/opensearch/data
    ports:
      - "9200:9200"
      - "9600:9600"

  opensearch-dashboards:
    image: opensearchproject/opensearch-dashboards:latest
    container_name: opensearch-dashboards
    ports:
      - "5601:5601"
    environment:
      - OPENSEARCH_HOSTS=["https://opensearch-node1:9200"]
    depends_on:
      - opensearch-node1

volumes:
  opensearch-data1:

Note:

• discovery.type=single-node is the documented way to avoid bootstrap failures for a single-node deployment.
• 9200 is the REST API port and 9600 is used for performance analyzer/metrics in the official examples.
• OPENSEARCH_INITIAL_ADMIN_PASSWORD is required for fresh installs in newer OpenSearch versions when using the demo security setup.

Step 4: Start & check with docker-compose

docker compose up -d
docker compose ps

Step 5: Check if it is working

curl -k -u admin:YourStrongAdminPassword123! https://localhost:9200

Step 6: Open in your browser using http://localhost:5601

You see page like this