Communicate with other workloads¶

This guide shows you how to communicate with other workloads inside the same environment or cluster via service discovery.

Prerequisites¶

Your workload has configured policies for outbound traffic to the target workload
The target workload has configured policies for inbound traffic from your workload

Identify the target address¶

To identity the address of the workload we are communicating with, we need to know its name and what namespace its running in.

Target exists in the same namespace¶

If the workload you are calling is in the same namespace, you can reach it by calling its name directly using HTTP like so:

http://<name>

Target exists in another namespace¶

If the workload is running in another team's namespace, you need to specify the namespace as well:

http://<name>.<namespace>

Use full hostname when using webproxy on-premises

If your workload has webproxy enabled, you must use the full hostname for all service discovery calls:

http://<name>.<namespace>.svc.nais.local

This is to ensure that your workload does not attempt to perform these in-cluster calls through the proxy, as the environment variable NO_PROXY includes *.local.

Call the address¶

Call the workload through its internal address using HTTP from your own workload:

GET /resource HTTP/1.1

Host: <name>.<namespace>