Elasticsearch credentials and index are hardcoded in YAML config—should support environment variable overrides.

Currently, the following values in src/ichec_logger/configs/elasticsearch.yaml are hardcoded:

  - sink: "elasticsearch"
    host: "http://localhost:9200"
    username: "elastic"
    password: "MLnt8JNW"
    index: "app-logs"

These credentials are specific to the user @njanagaraj and are not suitable for other users or production environments. Hardcoding sensitive information is also a security risk.

Proposed Solution:

• Replace hardcoded values with environment variable placeholders, for example:

  - sink: "elasticsearch"
    host: "http://localhost:9200"
    username: "${ELASTIC_USER}"
    password: "${ELASTIC_PASSWORD}"
    index: "${ELASTIC_INDEX}"

• Document in the README that users should set these environment variables before running the application.