Critical Container Log Spikes Are a Triage Signal
A container can remain healthy by its HTTP probe while its logs suddenly fill with exceptions, retries or failed dependency calls.
errors
Docker Daemon Error Bursts Need a Separate Alert
Individual container logs can all look normal while the Docker daemon is failing image, network, storage or runtime operations underneath them.
Container Network Errors Matter More Than Throughput Alone
RX and TX graphs looked busy enough, but throughput by itself could not tell whether traffic was healthy.