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Configuration files

1. Wazuh Manager Configuration

  • ossec.conf: The main configuration file for the Wazuh manager. It controls rules, decoders, agent enrollment, active responses, integrations, clustering, and more.
    • Customization: Mount a custom ossec.conf or specific configuration snippets (e.g., local rules in local_rules.xml) into the manager container at /wazuh-mount-point/, which will be copied to the path /var/ossec (e.g., the file /var/ossec/etc/ossec.conf must be mounted at /wazuh-mount-point/etc/ossec.conf) .

2. Wazuh Indexer Configuration

  • opensearch.yml: The primary configuration file for OpenSearch. Controls cluster settings, network binding, path settings, discovery, memory allocation, etc.
    • Customization: Mount a custom opensearch.yml into the indexer container(s) at /usr/share/wazuh-indexer/config/opensearch.yml.
  • JVM Settings (jvm.options): Manages Java Virtual Machine settings, especially heap size (-Xms, -Xmx). Critical for performance and stability.
    • Customization: Mount a custom jvm.options file or set OPENSEARCH_JAVA_OPTS environment variable.

3. Wazuh Dashboard (OpenSearch Dashboards) Configuration

  • opensearch_dashboards.yml: The main configuration file for OpenSearch Dashboards. Controls server host/port, OpenSearch connection URL, SSL settings, and Wazuh plugin settings.
    • Customization: Mount a custom opensearch_dashboards.yml into the dashboard container at /usr/share/wazuh-dashboard/config/opensearch_dashboards.yml and custom wazuh.yml into the dashboard container at /usr/share/wazuh-dashboard/data/wazuh/config/wazuh.yml .
  • Wazuh Plugin Settings: The Wazuh plugin for the dashboard has its own configuration, often within opensearch_dashboards.yml or managed through environment variables, specifying the Wazuh API URL and credentials.

Applying Configuration Changes

  1. Modify docker-compose.yml:
    • For changes to environment variables, port mappings, or volume mounts.
    • After changes, you typically need to stop and restart the containers: 
      docker compose down
docker compose up -d

Consult the official Wazuh documentation for version 5.0.0 for detailed information on all possible configuration parameters for each component.