Some of the commands that have been asked to run are below, it would be nice to have all of this in the support package if needed.
cat /sys/fs/cgroup/memory.stat from within a Ingress Controller pod
for p in $(pidof nginx nginx-ingress); do sudo pmap ${p} -X; done from the k8s node running the Ingress Controller pods
for p in $(pidof nginx nginx-ingress); do cat /proc/${p}/status; done since azure was unable to run the command above
Collect the following information from the API endpoint from the pods:

/api/8/processes
/api/8/connections
/api/8/slabs
/api/8/http/requests
/api/8/http/server_zones
/api/8/http/location_zones
/api/8/http/caches
/api/8/http/upstreams
/api/8/http/keyvals

Our plan is to deploy a custom container as a sidecar in the pod to fetch the necessary data.

• As a temporary measure, we can attached a container to the nginx-ingress container and collect the data needed:

pod=$(kb get po -n kic-0 -o name); kb -n kic-0 debug -it $pod --image=alpine:latest --target=nginx-ingress -c f5-debugger

• Once the alpine container is created, you should get a shell prompt to that container where you will need to add curl and jq (optional):

/ # apk add curl jq

• As we have attached this f5-debugger container to nginx-ingress container, we can now get the API output using curl and jq :

for i in /api/8/processes /api/8/connections /api/8/slabs /api/8/http/requests /api/8/http/server_zones /api/8/http/location_zones /api/8/http/caches /api/8/http/upstreams /api/8/http/keyvals; do echo "**** $i ****" ; curl "127.0.0.1:8080/$i" | jq .; echo ""; done