(DOCSP-27822): Update external connectivity tutorial with steps to configure externalAccess (#1267)

davidhou17 · web-flow · commit d11cb5ef5d75 · 2023-04-07T13:38:49.000-04:00
* Update tutorial with steps to configure externalAccess

copy review 1

tech review feedback

revise wording

final updates

* resolve merge conflicts
diff --git a/source/includes/facts/fact-external-access-spec.rst b/source/includes/facts/fact-external-access-spec.rst
@@ -6,31 +6,4 @@ that match the external service to a specific Pod.
 If you add this setting without any values, the |k8s-op-short| creates 
 an external service with the following default values:
 
-.. list-table::
-  :header-rows: 1
-  :widths: 30 25 45
-
-  * - Field
-    - Value
-    - Description
-
-  * - ``Name``
-    - ``<pod-name>-svc-external``
-    - Name of the external service. You can't change this value.
-
-  * - ``Type``
-    - ``LoadBalancer``
-    - Creates an external :k8sdocs:`LoadBalancer 
-      </concepts/services-networking/service/#loadbalancer>` service.
-
-  * - ``Port``
-    - ``<Port Number>``
-    - A port for |mongod|. If you set |external-domain|,
-      the external service adds another port (``Port Number + 1``) for backups.
-  
-  * - ``publishNotReadyAddress``
-    - ``true``
-    -  Specifies that :k8sdocs:`DNS records </concepts/services-networking/dns-pod-service/>`
-       are created even if the Pod isn't ready. 
-       Do not set to ``false`` for any database Pod.
-        
+.. include:: /includes/list-tables/external-service-default.rst
diff --git a/source/includes/list-tables/external-service-default.rst b/source/includes/list-tables/external-service-default.rst
@@ -0,0 +1,28 @@
+.. list-table::
+  :header-rows: 1
+  :widths: 30 25 45
+
+  * - Field
+    - Value
+    - Description
+
+  * - ``Name``
+    - ``<pod-name>-svc-external``
+    - Name of the external service. You can't change this value.
+
+  * - ``Type``
+    - ``LoadBalancer``
+    - Creates an external :k8sdocs:`LoadBalancer 
+      </concepts/services-networking/service/#loadbalancer>` service.
+
+  * - ``Port``
+    - ``<Port Number>``
+    - A port for |mongod|. If you set |external-domain|,
+      the external service adds another port (``Port Number + 1``) for backups.
+  
+  * - ``publishNotReadyAddress``
+    - ``true``
+    -  Specifies that :k8sdocs:`DNS records </concepts/services-networking/dns-pod-service/>`
+       are created even if the Pod isn't ready. 
+       Do not set to ``false`` for any database Pod.
+        
diff --git a/source/includes/steps-enable-split-horizon-openshift.yaml b/source/includes/steps-enable-split-horizon-openshift.yaml
@@ -81,7 +81,7 @@ stepnum: 4
 ref: remove-tls-existing-replica-sets-openshift
 source:
   file: steps-enable-split-horizon.yaml
-  ref: remove-tls-existing-replicasets
+  ref: add-san-to-cert
 
 ---
 title: "Open your replica set resource |yaml| file."
diff --git a/source/includes/steps-enable-split-horizon.yaml b/source/includes/steps-enable-split-horizon.yaml
@@ -17,7 +17,7 @@ content: |
 title: "Add Subject Alternate Names to your |tls| certificates."
 level: 4
 stepnum: 2
-ref: remove-tls-existing-replicasets
+ref: add-san-to-cert
 content: |
 
   Add each external |dns| name to the certificate |san-dns|.
diff --git a/source/includes/steps-multi-cluster-enable-split-horizon.yaml b/source/includes/steps-multi-cluster-enable-split-horizon.yaml
@@ -9,7 +9,7 @@ content: |
 title: ":ref:`Secure the Multi-Kubernetes Cluster with TLS <multi-cluster-secure-tls>`."
 level: 4
 stepnum: 2
-ref: enable-tls--replicaset
+ref: enable-tls-replicaset
 content: |
 
   Provide values for:
@@ -18,79 +18,143 @@ content: |
   - The custom |certauth| certificate in :setting:`spec.security.tls.ca`.
 
 ---
-title: "Add Subject Alternate Names to your |tls| certificates."
+title: "Create an external service for each of the Pods in different clusters."
 level: 4
 stepnum: 3
-ref: remove-tls-existing-replicasets
+ref: external-services-replicaset
 content: |
 
-  Add each external |dns| name to the certificate |san-dns|.
+  To connect to your |multi-cluster| from an external resource, configure the 
+  :ref:`spec.externalAccess <multi-spec-externalaccess>` setting:
+
+  .. code-block:: yaml
+
+     externalAccess: {}
+ 
+  This setting instructs the |k8s-op-short| to create an external :k8sdocs:`LoadBalancer 
+  </concepts/services-networking/service/#loadbalancer>` service for each Pod in your 
+  |multi-cluster|. The external service provides an entry point for external connections.
+  Adding this setting with no values creates an external service with the following default
+  values:
+
+  .. include:: /includes/list-tables/external-service-default.rst
+
+  Optionally, if you need to add values to the service or override the default values,
+  specify:
+
+  - Annotations specific to your cloud provider, in :ref:`spec.externalAccess.externalService.annotations 
+    <multi-spec-externalaccess-externalservice-annotations>`.
+  
+  - Overrides for the service specification, in :ref:`spec.externalAccess.externalService.spec
+    <multi-spec-externalaccess-externalservice-spec>`.
+  
+  For example, the following settings override the default values for the external service 
+  to configure your |multi-cluster| to create a :k8sdocs:`NodePort service 
+  </concepts/services-networking/service/#type-nodeport>` that exposes the |multi-cluster|:
+  
+  .. code-block:: yaml
+
+     externalAccess:
+       externalService: 
+         annotations:
+           # cloud-specific annotations for the service
+         spec:
+           type: NodePort # default is LoadBalancer
+           port: 27017
+           # you can specify other spec overrides if necessary
+
+  .. tip:: 
+
+     To learn more, see 
+     :k8sdocs:`Annotations </concepts/overview/working-with-objects/annotations/>` 
+     and :k8sdocs:`ServiceSpec </reference/kubernetes-api/service-resources/service-v1/#ServiceSpec>` 
+     in the |k8s| documentation.
 
 ---
-title: "Create a ``NodePort`` service for each of the Pods in different clusters."
+title: "Configure an external service for cluster members."
 level: 4
-stepnum: 4
-ref: k8s-ext-rs-create-nodeports
-content: |
-
-  When you create a ``NodePort`` service with ``kubectl``, it assigns a
-  random port in the range from 30000 to 32767, inclusive.
-
-  1. Create a NodePort service.
-
-     - To create a NodePort service that uses a randomly assigned port, run
-       the following command on each Pod in each cluster:
-
-       .. code-block:: sh
-
-          kubectl expose pod/<my-replica-set>-0 --type="NodePort" --port 27017
-
-     - To create a NodePort service that uses a deterministic port, on each
-       Pod in each cluster, create a ``Nodeport`` service definition YAML
-       file similar to the following example. Specify the port you want
-       to use in the :setting:`spec.ports.NodePort` setting. This example
-       configures a NodePort service on port 30007.
-
-       .. code-block:: yaml
-
-          apiVersion: v1
-          kind: Service
-          metadata:
-            name: <my-replica-set>-0
-            labels:
-              controller: mongodb-enterprise-operator
-          spec:
-            type: NodePort
-            selector:
-              controller: mongodb-enterprise-operator
-            ports:
-              port: 27017
-              targetPort: 27017
-              nodePort: 30007
+stepnum: 3
+optional: true
+ref: external-services-override-replicaset
+content: | 
+  
+  If you need to configure settings for a specific cluster member, 
+  such as when you're hosting members on different cloud providers, 
+  you can override the global :ref:`spec.externalAccess <multi-spec-externalaccess>` 
+  settings for a specific member by using the :ref:`spec.clusterSpecList.externalAccess.externalService
+  <multi-spec-clusterspeclist-externalservice>` setting. 
+  
+  To add values to the service or override the default values for a 
+  cluster member, specify:
+  
+  - Annotations specific to the cloud provider for the cluster member, in 
+    :ref:`spec.clusterSpecList.externalAccess.externalService.annotations 
+    <multi-spec-clusterspeclist-annotations>`.
+
+  - Overrides specific to the cluster member, in :ref:`spec.clusterSpecList.externalAccess.externalService.spec 
+    <multi-spec-clusterspeclist-spec>`.
+
+  For example, the following file configures your |multi-cluster| to 
+  create load balancer services that expose the |multi-cluster| for 
+  cluster members deployed in |gke| and |aws| :aws:`EKS </eks/latest/userguide/what-is-eks>`.
+
+  .. note:: 
+
+     The following example doesn't configure overrides, so the external services 
+     use the default values from the :ref:`spec.externalAccess <multi-spec-externalaccess>` 
+     setting.
+
+  .. code-block:: yaml
+
+     clusterSpecList:
+       - clusterName: gke-cluster-0.mongokubernetes.com
+         members: 2
+         externalAccess: 
+           externalService: 
+             annotations:
+               "cloud.google.com/l4-rbs": "enabled"  
+       - clusterName: eks-cluster-1.mongokubernetes.com
+         members: 2
+         externalAccess: 
+           externalService: 
+             annotations:
+               "service.beta.kubernetes.io/aws-load-balancer-type": "external",
+               "service.beta.kubernetes.io/aws-load-balancer-nlb-target-type": "instance",
+               "service.beta.kubernetes.io/aws-load-balancer-scheme": "internet-facing"
 
+---
+title: "Add Subject Alternate Names to your |tls| certificate."
+level: 4
+stepnum: 3
+ref: add-san-to-cert
+content: |
 
-       Apply the YAML with ``kubectl apply -f <nodeport-conf>.yaml``.
+  Add each external |dns| name to the certificate |san-dns|.
 
 ---
-title: "Verify the NodePort services."
+title: "Verify the external services."
 level: 4
 stepnum: 5
-ref: k8s-ext-rs-discover-nodeports
+ref: k8s-verify-external-services
 content: |
 
-  In each cluster, run this command to verify the NodePort services that
-  you created:
+  In each cluster, run the following command to verify that the external services
+  have been created.
 
   .. code-block:: sh
 
-     $ kubectl get svc <node_port_service_name>
+     $ kubectl get services
 
-  The command returns results similar to the following example:
+  The command returns a list of services similar to the following output.
+  For each database Pod in the cluster, the |k8s-op-short| creates an external service 
+  named ``<pod-name>-svc-external``. This service is configured according to the values 
+  and overrides you provide in the external service specification.
 
   .. code-block:: sh
+     :copyable: false
 
-     NAME                       TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)           AGE
-     <node_port_service_name>   NodePort    10.102.27.116   <none>        27017:30007/TCP   8m30s
+     NAME                                  TYPE         CLUSTER-IP   EXTERNAL-IP       PORT(S)           AGE
+     my-replica-set-0-0-svc-external   LoadBalancer   10.102.27.116    1.2.3.4      27017:27017/TCP     8m30s
 
 ---
 title: "Update your replica set resource |yaml| file."
@@ -100,7 +164,7 @@ ref: update-replset-resource-mc-split-horizon
 content: |
 
   Set the hostnames and ports in :setting:`spec.connectivity.replicaSetHorizons`
-  to the NodePort values that you created in the previous step.
+  to the LoadBalancer values that you created in the previous step.
 
   Confirm that you specified the correct external hostnames. External
   hostnames should match the |dns| names of |k8s| worker nodes.
diff --git a/source/reference/k8s-operator-multi-cluster-specification.txt b/source/reference/k8s-operator-multi-cluster-specification.txt
@@ -380,42 +380,7 @@ Optional ``MongoDBMultiCluster`` Resource Settings
 
   .. |hostname-example| replace:: ``multi-replica-set-0-1.cluster-0.example.com``
 
-<<<<<<< HEAD
-<<<<<<< HEAD
-  When you add a top-level domain, ``processes[n].hostname`` in the :opsmgr:`automation configuration </reference/cluster-configuration/>`
-  creates a value that is a subdomain of this top-level domain in the format ``<replica-set-name>-<cluster-idx>-<pod-idx>.<externalDomain>``.
-  For example, ``multi-replica-set-0-1.cluster-0.example.com``. The {+mdbagent+} uses this
-  hostname to connect to |mongod|.
-=======
-  When you add a top-level domain, the ``processes[n].hostname`` field in the 
-  :opsmgr:`automation configuration </reference/cluster-configuration>`
-  creates a value that contains the subdomain of the top-level domain in the 
-  following format:
-  
-  .. code-block:: none
-     :copyable: false
-
-     <replica-set-name>-<cluster-idx>-<pod-idx>.<externalDomain>
-  
-  For example:
-  
-  .. code-block:: none
-     :copyable: false
-
-     multi-replica-set-0-1.cluster-0.example.com
-
-  The {+mdbagent+} uses this hostname to connect to |mongod|.
->>>>>>> 2d7ac81 (reconcile changes against multi-cluster spec)
-
-  .. warning::
-
-     Specifying this field changes how |mongod| processes are registered in |onprem|.
-     You can only specify this field for new deployments. You can't change
-     the value of this field or any ``processes[n].hostname`` fields in the automation
-     configuration for a running deployment.
-=======
   .. include:: /includes/facts/fact-external-domain-spec.rst
->>>>>>> 68d53a6 (copy and tech review feedback 1)
 
   .. important::
 
@@ -452,6 +417,7 @@ Optional ``MongoDBMultiCluster`` Resource Settings
   *Type*: collection
 
   Configuration for the :k8sdocs:`ServiceSpec </reference/kubernetes-api/service-resources/service-v1/#ServiceSpec>`.
+  For more information, see :ref:`spec.clusterSpecList.externalAccess.externalService <multi-spec-clusterspeclist-externalservice>`.
 
 .. _multi-spec-clusterspeclist-memberconfig:
 
@@ -571,7 +537,7 @@ Optional ``MongoDBMultiCluster`` Resource Settings
   :ref:`spec.clusterSpecList.externalAccess.externalService 
   <multi-spec-clusterspeclist-externalservice>`.
   
-  .. |external-domain| replace:: ref:`spec.clusterSpecList.externalAccess.externalDomain <multi-spec-clusterspeclist-externaldomain>`
+  .. |external-domain| replace:: :ref:`spec.clusterSpecList.externalAccess.externalDomain <multi-spec-clusterspeclist-externaldomain>`
 
   .. include:: /includes/facts/fact-external-access-spec.rst
 
@@ -598,6 +564,14 @@ Optional ``MongoDBMultiCluster`` Resource Settings
   in the |k8s| documentation and the documentation for the cloud provider you use 
   for |k8s| deployments.
 
+.. _multi-spec-externalaccess-externalservice-spec:
+
+``spec.externalAccess.externalService.spec``
+  *Type*: collection
+
+  Configuration for the :k8sdocs:`ServiceSpec </reference/kubernetes-api/service-resources/service-v1/#ServiceSpec>`.
+  For more information, see :ref:`spec.externalAccess.externalService <multi-spec-externalaccess-externalservice>`.
+
 .. _multi-spec-fcv:
 
 ``spec.featureCompatibilityVersion``
diff --git a/source/tutorial/multi-cluster-connect-from-outside-k8s.txt b/source/tutorial/multi-cluster-connect-from-outside-k8s.txt
@@ -35,5 +35,7 @@ Procedure
 To connect to your |k8s-op-short|-deployed replica set with a |mongodb-multi|
 from outside of the |k8s| cluster:
 
+.. |external-domain| replace:: :setting:`spec.externalAccess.externalDomain`
+
 .. include:: /includes/steps/multi-cluster-enable-split-horizon.rst
 
