Link Search Menu Expand Document Documentation Menu

Docker security configuration

Before deploying to a production environment, you should replace the demo security certificates and configuration YAML files with your own. With the tarball, you have direct access to the file system, but the Docker image requires modifying the Docker storage volumes to include the replacement files.

Additionally, you can set the Docker environment variable DISABLE_INSTALL_DEMO_CONFIG to true. This change completely disables the demo installer.

Sample Docker Compose file

version: '3'
services:
  opensearch-node1:
    image: opensearchproject/opensearch:1.0.0
    container_name: opensearch-node1
    environment:
      - cluster.name=opensearch-cluster
      - node.name=opensearch-node1
      - discovery.seed_hosts=opensearch-node1,opensearch-node2
      - cluster.initial_master_nodes=opensearch-node1,opensearch-node2
      - bootstrap.memory_lock=true # along with the memlock settings below, disables swapping
      - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m" # minimum and maximum Java heap size, recommend setting both to 50% of system RAM
      - network.host=0.0.0.0 # required if not using the demo security configuration
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536 # maximum number of open files for the OpenSearch user, set to at least 65536 on modern systems
        hard: 65536
    volumes:
      - opensearch-data1:/usr/share/opensearch/data
      - ./root-ca.pem:/usr/share/opensearch/config/root-ca.pem
      - ./node.pem:/usr/share/opensearch/config/node.pem
      - ./node-key.pem:/usr/share/opensearch/config/node-key.pem
      - ./admin.pem:/usr/share/opensearch/config/admin.pem
      - ./admin-key.pem:/usr/share/opensearch/config/admin-key.pem
      - ./custom-opensearch.yml:/usr/share/opensearch/config/opensearch.yml
      - ./internal_users.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/internal_users.yml
      - ./roles_mapping.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/roles_mapping.yml
      - ./tenants.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/tenants.yml
      - ./roles.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/roles.yml
      - ./action_groups.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/action_groups.yml
    ports:
      - 9200:9200
      - 9600:9600 # required for Performance Analyzer
    networks:
      - opensearch-net
  opensearch-node2:
    image: opensearchproject/opensearch:1.0.0
    container_name: opensearch-node2
    environment:
      - cluster.name=opensearch-cluster
      - node.name=opensearch-node2
      - discovery.seed_hosts=opensearch-node1,opensearch-node2
      - cluster.initial_master_nodes=opensearch-node1,opensearch-node2
      - bootstrap.memory_lock=true
      - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m"
      - network.host=0.0.0.0
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536
        hard: 65536
    volumes:
      - opensearch-data2:/usr/share/opensearch/data
      - ./root-ca.pem:/usr/share/opensearch/config/root-ca.pem
      - ./node.pem:/usr/share/opensearch/config/node.pem
      - ./node-key.pem:/usr/share/opensearch/config/node-key.pem
      - ./admin.pem:/usr/share/opensearch/config/admin.pem
      - ./admin-key.pem:/usr/share/opensearch/config/admin-key.pem
      - ./custom-opensearch.yml:/usr/share/opensearch/config/opensearch.yml
      - ./internal_users.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/internal_users.yml
      - ./roles_mapping.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/roles_mapping.yml
      - ./tenants.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/tenants.yml
      - ./roles.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/roles.yml
      - ./action_groups.yml:/usr/share/opensearch/plugins/opensearch-security/securityconfig/action_groups.yml
    networks:
      - opensearch-net
  opensearch-dashboards
    image: opensearchproject/opensearch-dashboards:1.0.0
    container_name: opensearch-dashboards
    ports:
      - 5601:5601
    expose:
      - "5601"
    environment:
      OPENSEARCH_HOSTS: '["https://opensearch-node1:9200","https://opensearch-node2:9200"]' # must be a string with no spaces when specified as an environment variable
    volumes:
      - ./custom-opensearch_dashboards.yml:/usr/share/opensearch-dashboards/config/opensearch_dashboards.yml
    networks:
      - opensearch-net

volumes:
  opensearch-data1:
  opensearch-data2:

networks:
  opensearch-net:

Then make your changes to opensearch.yml. For a full list of settings, see Security. This example adds (extremely) verbose audit logging:

plugins.security.ssl.transport.pemcert_filepath: node.pem
plugins.security.ssl.transport.pemkey_filepath: node-key.pem
plugins.security.ssl.transport.pemtrustedcas_filepath: root-ca.pem
plugins.security.ssl.transport.enforce_hostname_verification: false
plugins.security.ssl.http.enabled: true
plugins.security.ssl.http.pemcert_filepath: node.pem
plugins.security.ssl.http.pemkey_filepath: node-key.pem
plugins.security.ssl.http.pemtrustedcas_filepath: root-ca.pem
plugins.security.allow_default_init_securityindex: true
plugins.security.authcz.admin_dn:
  - CN=A,OU=UNIT,O=ORG,L=TORONTO,ST=ONTARIO,C=CA
plugins.security.nodes_dn:
  - 'CN=N,OU=UNIT,O=ORG,L=TORONTO,ST=ONTARIO,C=CA'
plugins.security.audit.type: internal_opensearch
plugins.security.enable_snapshot_restore_privilege: true
plugins.security.check_snapshot_restore_write_privileges: true
plugins.security.restapi.roles_enabled: ["all_access", "security_rest_api_access"]
cluster.routing.allocation.disk.threshold_enabled: false
plugins.security.audit.config.disabled_rest_categories: NONE
plugins.security.audit.config.disabled_transport_categories: NONE

Use this same override process to specify new authentication settings in /usr/share/opensearch/plugins/opensearch-security/securityconfig/config.yml, as well as new default internal users, roles, mappings, action groups, and tenants.

To start the cluster, run docker-compose up.

If you encounter any File /usr/share/opensearch/config/opensearch.yml has insecure file permissions (should be 0600) messages, you can use chmod to set file permissions before running docker-compose up. Docker Compose passes files to the container as-is.

Finally, you can reach OpenSearch Dashboards at http://localhost:5601, sign in, and use the Security panel to perform other management tasks.

Using certificates with Docker

To use your own certificates in your configuration, add all of the necessary certificates to the volumes section of the Docker Compose file:

volumes:
- ./root-ca.pem:/full/path/to/certificate.pem
- ./admin.pem:/full/path/to/certificate.pem
- ./admin-key.pem:/full/path/to/certificate.pem
#Add other certificates

After replacing the demo certificates with your own, you must also include a custom opensearch.yml in your setup, which you need to specify in the volumes section.

volumes:
#Add certificates here
- ./custom-opensearch.yml: /full/path/to/custom-opensearch.yml

Remember that the certificates you specify in your Docker Compose file must be the same as the certificates listed in your custom opensearch.yml file. At a minimum, you should replace the root, admin, and node certificates with your own. For more information about adding and using certificates, see Configure TLS certificates.

plugins.security.ssl.transport.pemcert_filepath: new-node-cert.pem
plugins.security.ssl.transport.pemkey_filepath: new-node-cert-key.pem
plugins.security.ssl.transport.pemtrustedcas_filepath: new-root-ca.pem
plugins.security.ssl.http.pemcert_filepath: new-node-cert.pem
plugins.security.ssl.http.pemkey_filepath: new-node-cert-key.pem
plugins.security.ssl.http.pemtrustedcas_filepath: new-root-ca.pem
plugins.security.authcz.admin_dn:
  - CN=admin,OU=SSL,O=Test,L=Test,C=DE

To start the cluster, run docker-compose up as usual.