AKO upgrade fails with error "failed to pull and unpack image"

Products

• VMware Telco Cloud Automation

Issue/Introduction

During the CNF instantiation/upgrade below error of pulling image can be observed for the clusters.

Failed to pull image "example.packages.com/kubectl:3.2.0-ob-24441215": rpc error: code = Unknown desc = failed to pull and unpack image "example.packages.com/kubectl:3.2.0-ob-24441215": failed to resolve reference "example.packages.com/kubectl:3.2.0-ob-24441215": failed to do request: Head "https://example.packages.com/v2/kubectl/manifests/3.2.0-ob-24441215": dial tcp ##.###.##.##:443: connect: network is unreachable

Environment

3.2

Cause

Airgap Server FQDN is missing for clusters in the database of TCA Control plane node. This could happen after cluster certs are renewed using manual/automated work arounds provided.

Resolution

To resolve this issue, follow the procedule from KB :  How to manually update the airgap FQDN in TCA-CP postgres database