Restore simplified relationships (updated) (#3881)

* Update registry to use service names for relationship names.

* add-services/_index.md

* add-services/headless-chrome.md

* themes/../partials/examples/relationships.html

* themes/../partials/examples/servicedefn.html

* themes/../shortcodes/endpoint-description.md

* themes/../shortcodes/v2connect2app.md

* add-services/influxdb.md

* Fix usage example indents and comment spacing.

* add-services/kafka

* add-services/memcached.

* Fix double = typo.

* add-services/mongodb.md

* endpoint-description > oracle-mysql fix

* add-services/mysql/_index.md

* add-services/mysql/mysql-replication.

* add-services/network-storage

* add-services/opensearch.md

* add-services/postgresql

* add-services/rabbitmq.md

* add-services/redis

* add-services/solr.md

* add-services/varnish

* Fix random character mistake.

* create-apps/_index.md

* create-apps/app-reference

* guides/drupal/redis.

* languages/elixir.

* languages/java/migration

* languages/lisp.

* languages/ruby.

* learn/tutorials/restrict-service-access

* create-apps/workers.

* [guides|get-started/stacks]/symfony/environment-variables

Author: chadwcarlson

shared/data/registry.json

@@ -3,8 +3,8 @@
     "description": "",
     "disk": false,
     "docs": {
-      "relationship_name": "chromeheadlessbrowser",
-      "service_name": "chromeheadless",
+      "relationship_name": "chrome-headless",
+      "service_name": "chrome-headless",
       "url": "/add-services/headless-chrome.html"
     },
     "endpoint": "http",
@@ -100,7 +100,7 @@
     "description": "A manufacture service for Elasticsearch",
     "disk": true,
     "docs": {
-      "relationship_name": "essearch",
+      "relationship_name": "elasticsearch",
       "service_name": "elasticsearch",
       "url": "/add-services/elasticsearch.html"
     },
@@ -276,7 +276,7 @@
     "description": "",
     "disk": true,
     "docs": {
-      "relationship_name": "influxdbdatabase",
+      "relationship_name": "influxdb",
       "service_name": "influxdb",
       "url": "/add-services/influxdb.html"
     },
@@ -355,7 +355,7 @@
     "description": "",
     "disk": true,
     "docs": {
-      "relationship_name": "kafkaqueue",
+      "relationship_name": "kafka",
       "service_name": "kafka",
       "url": "/add-services/kafka.html"
     },
@@ -431,7 +431,7 @@
     "repo_name": "mariadb",
     "disk": true,
     "docs": {
-      "relationship_name": "mariadbdatabase",
+      "relationship_name": "mariadb",
       "service_name": "mariadb",
       "url": "/add-services/mysql.html"
     },
@@ -491,7 +491,7 @@
     "repo_name": "mariadb",
     "disk": true,
     "docs": {
-      "relationship_name": "mysqldatabase",
+      "relationship_name": "mysql",
       "service_name": "mysql",
       "url": "/add-services/mysql.html"
     },
@@ -547,7 +547,7 @@
     "repo_name": "memcached",
     "disk": false,
     "docs": {
-      "relationship_name": "memcachedcache",
+      "relationship_name": "memcached",
       "service_name": "memcached",
       "url": "/add-services/memcached.html"
     },
@@ -573,7 +573,7 @@
     "repo_name": "mongodb",
     "disk": true,
     "docs": {
-      "relationship_name": "mongodbdatabase",
+      "relationship_name": "mongodb",
       "service_name": "mongodb",
       "url": "/add-services/mongodb.html"
     },
@@ -598,8 +598,8 @@
     "repo_name": "mongodb",
     "disk": true,
     "docs": {
-      "relationship_name": "mongodbdatabase",
-      "service_name": "mongodb",
+      "relationship_name": "mongodb-enterprise",
+      "service_name": "mongodb-enterprise",
       "url": "/add-services/mongodb.html"
     },
     "endpoint": "mongodb",
@@ -712,7 +712,7 @@
     "description": "A manufacture service for OpenSearch",
     "disk": true,
     "docs": {
-      "relationship_name": "ossearch",
+      "relationship_name": "opensearch",
       "service_name": "opensearch",
       "url": "/add-services/opensearch.html"
     },
@@ -754,7 +754,7 @@
     "repo_name": "oracle-mysql",
     "disk": true,
     "docs": {
-      "relationship_name": "oracledatabase",
+      "relationship_name": "oracle-mysql",
       "service_name": "oracle-mysql",
       "url": "/add-services/mysql.html"
     },
@@ -844,7 +844,7 @@
     "repo_name": "postgresql",
     "disk": true,
     "docs": {
-      "relationship_name": "postgresqldatabase",
+      "relationship_name": "postgresql",
       "service_name": "postgresql",
       "url": "/add-services/postgresql.html"
     },
@@ -946,7 +946,7 @@
     "repo_name": "rabbitmq",
     "disk": true,
     "docs": {
-      "relationship_name": "rabbitmqqueue",
+      "relationship_name": "rabbitmq",
       "service_name": "rabbitmq",
       "url": "/add-services/rabbitmq.html"
     },
@@ -1002,7 +1002,7 @@
     "repo_name": "redis",
     "disk": false,
     "docs": {
-      "relationship_name": "rediscache",
+      "relationship_name": "redis",
       "service_name": "redis",
       "url": "/add-services/redis.html"
     },
@@ -1150,7 +1150,7 @@
     "repo_name": "solr",
     "disk": true,
     "docs": {
-      "relationship_name": "solrsearch",
+      "relationship_name": "solr",
       "service_name": "solr",
       "url": "/add-services/solr.html"
     },
@@ -1206,7 +1206,7 @@
     "repo_name": "varnish",
     "disk": false,
     "docs": {
-      "relationship_name": "varnishstats",
+      "relationship_name": "varnish",
       "service_name": "varnish",
       "url": "/add-services/varnish.html"
     },
@@ -1236,7 +1236,7 @@
     "description": "",
     "disk": true,
     "docs": {
-      "relationship_name": "vault_secret",
+      "relationship_name": "vault-kms",
       "service_name": "vault-kms",
       "url": "/add-services/vault.html"
     },

sites/platform/src/add-services/_index.md

@@ -28,27 +28,27 @@ All service configuration happens in the `{{< vendor/configfile "services" >}}`
 Configure your service in the following pattern:
 
 ```yaml {configFile="services"}
-{{% snippet name="SERVICE_NAME" config="service" %}}
+# The name of the service container. Must be unique within a project.
+SERVICE_NAME:
     type: {{<variable "SERVICE_TYPE" >}}:{{<variable "VERSION" >}}
     # Other options...
-{{% /snippet %}}
 ```
 
 An example service configuration for two databases might look like this:
 
 ```yaml {configFile="services"}
-{{% snippet name="database1" config="service"  %}}
+# The name of the service container. Must be unique within a project.
+mariadb:
     type: mariadb:{{% latest "mariadb" %}}
     disk: 2048
-{{% /snippet %}}
-{{% snippet name="database2" config="service" globKey="false"  %}}
+# The name of the service container. Must be unique within a project.
+postgresql:
     type: postgresql:{{% latest "postgresql" %}}
     disk: 1024
-{{% /snippet %}}
 ```
 
 This YAML file is a dictionary defining all of the services you want to use.
-The top-level key is a custom service name ({{<variable "SERVICE_NAME" >}}; in the example, `database1` and `database2`), which you use to identify the service in step 2.
+The top-level key is a custom service name ({{<variable "SERVICE_NAME" >}}; in the example, `mariadb` and `postgresql`), which you use to identify the service in step 2.
 
 You can give it any name you want with lowercase alphanumeric characters, hyphens, and underscores.
 
@@ -70,7 +70,7 @@ The following table presents the keys you can define for each service:
 | `disk`          | `integer`  | For some services | The size in [MB](/glossary.md#mb) of the [persistent disk](#disk) allocated to the service. Can't be set for memory-resident-only services such as `memcache` and `redis`. Limited by your plan settings. |
 | `size`          | `string`   |                   | How many CPU and memory [resources to allocate](#size) to the service. Possible values are `AUTO`, `S`, `M`, `L`, `XL`, `2XL`, and `4XL`. Limited by your plan settings.<BR><BR>When `AUTO` applies, available resources are automatically balanced out based on the number of containers on your plan, so that no container is oversized compared to the others. To view the actual sizes of your containers, check the **Environment Configuration** section in your deployment [activity logs](../increase-observability/logs/access-logs.md#activity-logs). |
 | `configuration` | dictionary | For some services | Some services have additional specific configuration options that can be defined here, such as specific endpoints. See the given service page for more details. |
-| `relationships` | dictionary | For some services | Some services require a relationship to your app. The content of the dictionary has the same type as the `relationships` dictionary for [app configuration](../create-apps/app-reference.md#relationships). The `endpoint_name` for apps is always `http`. |
+| `relationships` | dictionary | For some services | Some services require a relationship to your app. The content of the dictionary has the same type as the `relationships` dictionary for [app configuration](/create-apps/app-reference.md#relationships). The `endpoint_name` for apps is always `http`. |
 
 ##### Disk
 
@@ -90,46 +90,46 @@ Note that service containers in preview environments are always set to size `S`.
 
 ### 2. Connect the service
 
-Once you have configured a service, you need to create a relationship to connect it to an app.
-This is done in your [app configuration for relationships](../create-apps/app-reference.md#relationships).
-
-The relationship follows this pattern:
+To connect the service, use the following configuration:
 
 ```yaml {configFile="app"}
-{{% snippet name="<APP_NAME>" config="app" root="false"%}}
-
 # Other options...
 
 # Relationships enable an app container's access to a service.
+# The example below shows simplified configuration leveraging a default service (identified from the relationship name) and a default endpoint.
+# See the Application reference for all options for defining relationships and endpoints.
 relationships:
-    {{< variable "RELATIONSHIP_NAME" >}}: "{{< variable "SERVICE_NAME" >}}:{{< variable "ENDPOINT" >}}"
-{{% /snippet %}}
-{{% snippet name="SERVICE_NAME" config="service" placeholder="true"%}}
-    type: {{<variable "SERVICE_TYPE" >}}:{{<variable "VERSION" >}}
-    # Other options...
-{{% /snippet %}}
+    {{<variable "SERVICE_NAME" >}}:
 ```
 
+You can define `<SERVICE_NAME>` as you like, so long as it's unique between all defined services 
+and matches in both the application and services configuration.
+
+The example above leverages [default endpoint](/create-apps/app-reference#relationships) configuration for relationships.
+That is, it uses default endpoints behind-the-scenes, providing a [relationship](/create-apps/app-reference#relationships)
+(the network address a service is accessible from) that is identical to the _name_ of that service.
+
+Depending on your needs, instead of default endpoint configuration,
+you can use [explicit endpoint configuration](/create-apps/app-reference#relationships).
+
 An example relationship to connect to the databases given in the [example in step 1](#1-configure-the-service):
 
 ```yaml {configFile="app"}
-{{< snippet name="<APP_NAME>" config="app" root="false">}}
-
 # Other options...
 
-# Relationships enable an app container's to a service.
+# Relationships enable an app container's access to a service.
 relationships:
-    mysql_database: "database1:mysql"
-    postgresql_database: "database2:postgresql"
-{{% /snippet %}}
-{{% snippet name="database1" config="service" placeholder="true"  %}}
+    mariadb:
+    postgresql:
+```
+
+```yaml {configFile="services"}
+mariadb:
     type: mariadb:{{% latest "mariadb" %}}
     disk: 2048
-{{% /snippet %}}
-{{% snippet name="database2" config="service" globKey="false" placeholder="true"  %}}
+postgresql:
     type: postgresql:{{% latest "postgresql" %}}
     disk: 1024
-{{% /snippet %}}
 ```
 
 As with the service name, you can give the relationship any name you want
@@ -201,17 +201,17 @@ To get the credentials for a given service, run the following command:
 You get output like the following:
 
 ```yaml
-database:
+mariadb:
     -
         username: user
         scheme: mysql
-        service: database
+        service: mariadb
         fragment: null
         ip: 198.51.100.37
-        hostname: abcdefghijklm1234567890123.database.service._.eu.{{< vendor/urlraw "hostname" >}}
+        hostname: abcdefghijklm1234567890123.mariadb.service._.eu.{{< vendor/urlraw "hostname" >}}
         public: false
         cluster: abcdefgh1234567-main-abcd123
-        host: database.internal
+        host: mariadb.internal
         rel: mysql
         query:
             is_master: true
@@ -220,10 +220,10 @@ database:
         type: 'mariadb:10.6'
         port: 3306
         host_mapped: false
-        url: 'mysql://user:@database.internal:3306/main'
+        url: 'mysql://user:@mariadb.internal:3306/main'
 ```
 
-With this example, you can connect to the `database` relationship
+With this example, you can connect to the `mariadb` relationship
 with the user `user`, an empty password, and the database name `main` (from the `path`).
 The `url` property shows a full database connection that can be used from your app.
 

sites/platform/src/add-services/headless-chrome.md

@@ -42,7 +42,7 @@ Puppeteer can be used to generate PDFs and screenshots of web pages, automate fo
     "ip": "123.456.78.90",
     "hostname": "azertyuiopqsdfghjklm.chromeheadless.service._.eu-1.{{< vendor/urlraw "hostname" >}}",
     "cluster": "azertyuiop-main-7rqtwti",
-    "host": "chromeheadlessbrowser.internal",
+    "host": "chromeheadless.internal",
     "rel": "http",
     "scheme": "http",
     "type": "chrome-headless:{{< latest "chrome-headless" >}}",
@@ -103,7 +103,7 @@ Using the [Node.js Config Reader library](../development/variables/use-variables
 const platformsh = require('platformsh-config');
 
 const config = platformsh.config();
-const credentials = config.credentials('chromeheadlessbrowser');
+const credentials = config.credentials('chromeheadless');
 ```
 
 and use them to define the `browserURL` parameter of `puppeteer.connect()` within an `async` function:
@@ -112,7 +112,7 @@ and use them to define the `browserURL` parameter of `puppeteer.connect()` withi
 exports.getBrowser = async function (url) {
     try {
         // Connect to chrome-headless using pre-formatted puppeteer credentials
-        const formattedURL = config.formattedCredentials('chromeheadlessbrowser', 'puppeteer');
+        const formattedURL = config.formattedCredentials('chromeheadless', 'puppeteer');
         const browser = await puppeteer.connect({browserURL: formattedURL});
 
         ...