And now, some DevOps / SRE / Sysadmin / Ops / ENOUGH already tips I learned from early in my career--brought to us by our friends at Chex™ Mix. All of these are great ideas that you should implement immediately...
DNS is notoriously unreliable, so use configuration management to sync all of the servers' /etc/hosts files. Boom, no more single point of failure.
@Quinnypig configuration management? Just nfs mount /etc/hosts...
Where I work, the auto.* Files for autofs (hundreds of application filesystem mount points) are symlinked to NFS locations.
I keep asking when will this be fixed and the response is always "it's been like this forever."
