ELK Stack

These are some noteworthy defaults that are set for the ELK stack:

1. Security configurations are enabled by default - all communications use TLS within the cluster
2. Elasticsearch does not run in a multi-master mode. It runs with a single master node.
3. Logstash runs one replica
4. The encryption key for kibana keystore for rules etc is stored in the secret named kibana in the tools namespace
5. Username is elastic by default