Red Hat 3scale DNS lookup Slowdown

Red-hat-3scale-dns-lookup-slowdown

###The workaround consist on modifying the settings to accept the internal hostname. The steps are the following:

###Copy the settings.yml file from system-app:
oc rsh -c system-provider dc/system-app cat /opt/system/config/settings.yml > settings.yml

###Edit the field apicast_internal_host_regexp from
#    '\Asystem-(master|provider|developer)\Z'
#    to
#    '\Asystem-(master|developer|provider)(\.(.*)(\.svc\.cluster\.local))?\Z'

###Create a configmap:
oc create configmap settings-svc --from-file=settings.yml

###Create a volume to mount the configmap:
oc set volume dc/system-app --add --name=settings-svc --mount-path /opt/system/config/settings.yml --sub-path settings.yml --source='{"configMap":{"name":"settings-svc","items":[{"key":"settings.yml","path":"settings.yml"}]}}'

###Update the value of the PROXY_CONFIGS_ENDPOINT in the secret system-master-apicast from
#    http://<token>@system-master:3000/master/api/proxy/configs
#    to
#    http://<token>@system-master.<namespace>.svc.cluster.local:3000/master/api/proxy/configs

###Redeploy apicast-staging and apicast-production.
oc rollout latest dc/apicast-production
oc rollout latest dc/apicast-staging


###Modify backend-listener secret service_endpoint :

#from :
#http://backend-listener:3000

#to:
#http://backend-listener.threescale.svc.cluster.local:3000