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Interface Renaming Scripts Jun 2018

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For anyone that has used CentOS/Red Hat prior to version 7, or indeed other versions of Linux, the norm for network interface naming is to use eth0, eth1, eth2 etc.

CentOS 7 changed this naming convention, for two main reasons.

  1. Security (knowing particular interface names is considered a security risk).
  2. Deterministic Naming. While the interfaces names used have always been the same, the 
  mapping has been a bit hit and miss, and so on 10 identical servers, while the names are
  the same, eth0 may not always be the same physical interface (like Windows it can move).