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Settings when you want to use yum, wget, etc. from the back segment
I want to send an email to the host in the back segment (for example, the one that doesn't have an EIP in the VPC, or the one you want to smell in the back, such as a DB or NAS) to name resolution, email, yum, wget, time synchronization, etc.! I will give a rough summary of the settings in this case. For the time being, there are two patterns. NAT (using NAT instances for AWS) pattern and 、...
