Update local_setup.md (elastic#115169) (elastic#115265)

Co-authored-by: Søren Louv-Jansen <[email protected]>

x-pack/plugins/apm/dev_docs/local_setup.md

@@ -1,6 +1,4 @@
-## Local environment setup
-
-### Kibana
+# Start Kibana
 
 ```
 git clone [email protected]:elastic/kibana.git
@@ -9,25 +7,35 @@ yarn kbn bootstrap
 yarn start --no-base-path
 ```
 
-### APM Server, Elasticsearch and data
+# Elasticsearch, APM Server and data generators
 
 To access an elasticsearch instance that has live data you have two options:
 
-#### A. Connect to Elasticsearch on Cloud (internal devs only)
+## A. Cloud-based ES Cluster (internal devs only)
 
-Find the credentials for the cluster [here](https://github.com/elastic/observability-dev/blob/master/docs/observability-clusters.md)
+Use the [oblt-cli](https://github.com/elastic/observability-test-environments/blob/master/tools/oblt_cli/README.md) to connect to a cloud-based ES cluster.
 
-#### B. Start Elastic Stack and APM data generators
+## B. Local ES Cluster
 
+### Start Elasticsearch and APM data generators
+_Docker Compose is required_
 ```
 git clone [email protected]:elastic/apm-integration-testing.git
 cd apm-integration-testing/
 ./scripts/compose.py start master --all --no-kibana
 ```
 
-_Docker Compose is required_
+### Connect Kibana to Elasticsearch
 
-### Setup default APM users
+Update `config/kibana.dev.yml` with:
+
+```yml
+elasticsearch.hosts: http://localhost:9200
+elasticsearch.username: admin
+elasticsearch.password: changeme
+```
+
+# Setup default APM users
 
 APM behaves differently depending on which the role and permissions a logged in user has. To create the users run:
 
@@ -37,11 +45,10 @@ node x-pack/plugins/apm/scripts/create-apm-users-and-roles.js --username admin -
 
 This will create:
 
-**apm_read_user**: Read only user
-
-**apm_power_user**: Read+write user.
+ - **apm_read_user**: Read only user
+ - **apm_power_user**: Read+write user.
 
-## Debugging Elasticsearch queries
+# Debugging Elasticsearch queries
 
 All APM api endpoints accept `_inspect=true` as a query param that will output all Elasticsearch queries performed in that request. It will be available in the browser response and on localhost it is also available in the Kibana Node.js process output.