Fail to execute CF commands with error "This command requires Network Policy API V1. Your targeted endpoint does not expose it." returned

Products

• VMware Tanzu Application Service for VMs

Issue/Introduction

After switching CF-CLI version, especially when CF-CLI v6 is involved, it may fail to execute network-policy related commands including "cf network-policies" and "cf add-network-policy".

# When CF-CLI version is set as v6, "cf network-policies" command can be ran successfully
$ brew unlink cf-cli@8 && brew unlink cf-cli@6 && brew link cf-cli@6 && cf version
cf version 6.53.0+8e2b70a4a.2020-10-01

$ cf network-policies
Listing network policies in org system / space system as admin...

source   destination   protocol   ports   destination space   destination org

# After CF-CLI version is switched to v8, command "cf network-policies" fails to run
$ brew unlink cf-cli@6 && brew unlink cf-cli@8 && brew link cf-cli@8 && cf version

$ cf network-policies
This command requires Network Policy API V1. Your targeted endpoint does not expose it.
FAILED

Environment

Product Version: 2.11

Resolution

When network-policy related commands are executed, the request will call /networking/v1/external/policies endpoint.

• Part of "CF_TRACE=true cf add-network-policy" command output:

REQUEST: [2022-10-21T09:53:10+09:00]
POST /networking/v1/external/policies HTTP/1.1

• However, after switching the CF-CLI version, the value for "NetworkPolicyV1Endpoint" could be null, which triggers the error message "This command requires Network Policy API V1. Your targeted endpoint does not expose it."

$ cat ~/.cf/config.json | grep NetworkPolicyV1Endpoint
  "NetworkPolicyV1Endpoint": "",

• To work around the issue, add the proper value for "NetworkPolicyV1Endpoint" in .cf/config.json file.

$ vi ~/.cf/config.json
$ cat ~/.cf/config.json | grep NetworkPolicyV1Endpoint
  "NetworkPolicyV1Endpoint": "https://api.run-##.####-##.#####-###-###.######.com/networking/v1/external",

$ cf network-policies
Listing network policies in org system / space system as admin...

source   destination   protocol   ports   destination space   destination org