Configuring our logging database

To enable our database to accept logs, we add the following service to our docker-compose.yml:

# docker-compose.yml
. . .
elasticsearch:
  image: docker.elastic.co/elasticsearch/elasticsearch:7.13.4
  container_name: elasticsearch
  environment:
    - discovery.type=single-node
    - bootstrap.memory_lock=true
    - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
  ulimits:
    memlock:
      soft: -1
      hard: -1
  ports:
    - "9200:9200"
    - "9300:9300"

For the elasticsearch database, we have the following configurations:

discovery.type=single-node: This configures Elasticsearch to run in single-node mode, which is suitable for development or testing environments.

bootstrap.memory_lock=true: This ensures that the JVM locks the memory used by Elasticsearch, preventing it from being swapped out by the operating system.

"ES_JAVA_OPTS=-Xms512m -Xmx512m": This sets the Java heap size options, specifying that both the initial...