anchor.diff:  
   === Run KSQL CLI and Postgres CLI
   
  -Optionally, use something like `screen` or `tmux` to have these both easily to hand. Or multiple Terminal tabs. Whatever works for you :)
  -KSQL CLI:
  -
  +Optionally, use something like `screen` or `tmux` to have these both easily to hand. Or multiple Terminal tabs. 
  +Whatever works for you :)
  +
  +.KSQL CLI
   [source,bash]
   ----
   cd docker-compose
   docker-compose exec ksql-cli ksql http://ksql-server:8088
   ----
   
  -Postgres CLI:
  -
  -[source,bash]
  -----
  -cd docker-compose
  +.Postgres CLI
  +[source,bash]
  +----
   docker-compose exec postgres bash -c 'psql --username postgres'
   ----
   
   == Pre-flight checklist
   
  -Is the stack up?
  +=== Is the stack up?
   
   [source,bash]
   ----
   $ docker-compose ps
  +
   Name                             Command               State                          Ports
   ---------------------------------------------------------------------------------------------------------------------------------
   docker-compose_connect-debezium_1   /docker-entrypoint.sh start      Up      0.0.0.0:8083->8083/tcp, 8778/tcp, 9092/tcp, 9779/tcp
  
positive.code: kibana                              /usr/local/bin/kibana-docker     Up      0.0.0.0:5601->5601/tcp
  ----
  
  Are the connectors running?
  
  [source,bash]
  ----
  $ curl -s "http://localhost:8083/connectors"| jq '.[]'| xargs -I{connector_name} curl -s "http://localhost:8083/connectors/"{connector_name}"/status"| jq -c -M '[.name,.connector.state,.tasks[].state]|join(":|:")'| column -s : -t| sed 's/\"//g'| sort
  pg-source  |  RUNNING  |  RUNNING
  
  $ curl -s "http://localhost:18083/connectors"| jq '.[]'| xargs -I{connector_name} curl -s "http://localhost:18083/connectors/"{connector_name}"/status"| jq -c -M '[.name,.connector.state,.tasks[].state]|join(":|:")'| column -s : -t| sed 's/\"//g'| sort
  es_sink_ratings-with-customer-data  |  RUNNING  |  RUNNING
  es_sink_unhappy_platinum_customers  |  RUNNING  |  RUNNING
  jdbc_sink_postgres                  |  RUNNING  |  RUNNING
  ----
  
  Is ratings data being produced?
  
  [source,bash]
  ----
  
negative.code: * Load this instructions doc into Chrome
  * Close all other apps
  
  === Prep KSQL
  
  [source,sql]
  ----
  