Application Gateway Health Check DNS Retry
We were told by support that if the Application Gateway Health Check DNS request fails (the DNS entry is not found) the Application gateway will not try a lookup again until there is a config change. We have a race condition when standing up new apps that sometimes the health check happens before the DNS Entry can be resolved which causes the site to stay in an 'unknown' state forever until the next config change.
We would love to see some kind of retry logic around DNS lookups as DNS requests fail sometimes. It seems like a bad idea to just give up on something forever because one DNS request failed.