Update privatelink-service.md (magento#7538)

ttunga-zz · meker12 · web-flow · commit f2ae23be14cc · 2020-07-23T18:50:31.000-05:00
* Update privatelink-service.md

Updated the troubleshooting steps.

* Update src/cloud/project/privatelink-service.md

Co-authored-by: Margaret Eker &lt;meker@adobe.com&gt;

* Update src/cloud/project/privatelink-service.md

* Update privatelink-service.md

removed cmd netstat -an | grep ESTABLISHED as it is repeated twice.
Actually is used to check if the system has an established connection on the port. And it is already mentioned in point 4(ensure the service is listening on VM).

* Fixed markdown syntax

* Fixed command name and md syntax errors

netsat ==&gt; netstat

Co-authored-by: Margaret Eker &lt;meker@adobe.com&gt;
diff --git a/src/cloud/project/privatelink-service.md b/src/cloud/project/privatelink-service.md
@@ -153,6 +153,25 @@ To test the connection to the VPC endpoint service:
    ```
    {:.no-copy}
 
+1. Run the following command to to ensure the service is listening on VM:
+
+   ```bash
+   netstat -na |grep <port>
+   ```
+
+1. Run the following command to check the packages flow:
+
+   ```bash
+   tcpdump -i <ethernet interface> -tt -nn port <destination port> and host <source host>
+   ```
+
+   Check the following internal settings to ensure that the configuration is valid:
+
+   -  Endpoint and endpoint services settings
+   -  NLB settings
+   -  The target groups in NLB and verify they are healthy
+   -  The netcat/curl endpoint URL from each VM ( listed above)
+
    See the following articles for help troubleshooting connection issues:
 
    -  [AWS: Troubleshooting endpoint service connections][]
@@ -172,7 +191,7 @@ Submit a Magento Support ticket to change an existing PrivateLink configuration.
 
 The customer VPC must have the following resources available to support bidirectional PrivateLink connections:
 
--  A Network Load Balancer
+-  A Network Load Balancer (NLB)
 -  An endpoint service configuration that enables access to an application or service from the customer VPC
 -  An [interface endpoint][] (AWS) or [private endpoint][] (Azure) that allows Magento to connect to endpoint services hosted in your VPC
 
