When attempting to "docker exec" into a container for troubleshooting, no output is returned

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• While executing command docker exec against a container there is no output.
• Attempts to connect to port 2377 on the ESXi host where the container is running faile Note: you can use a command similar to the following to test this (where 192.168.100.50 is the IP address of the ESXi host:

nc -v -z 192.168.100.50 2377

• Check if the vSPC URI is pointed to VCH with port 2377 under the edit settings of the Container VM .

Environment

VMware vSphere Integrated Containers 1.4.x

Resolution

This issue will most likely occur when port 2377 is blocked by external firewall and results in no communication between the ESXi host and VCH.To resolve this issue, ensure that the networking is configured per the VIC documentation and port 2377 is enabled on external firewall.

Additional Information

Virtual Container Host Networks