Regex as documented does not show logs indicating Kafka version upgrade was successful.

1. Upgrade to AMQ Streams 1.5

2. Run the following (replacing cluster pod name) as documented:

oc logs -f <cluster-operator-pod-name> | grep -E "Kafka version upgrade from [0-9.]+ to [0-9.]+, phase ([0-9]+) of \1 completed"

No results are returned.

3. The following regex does return results:

"Kafka version upgrade from.*[0-9.]+.*to.*[0-9]+.*, phase ([0-9]+) of \1 completed"