OpenShift ICMP networking requirements

Solution Verified - Updated -

Issue

  • The OpenShift documentation states that ICMP connectivity is required for "Network reachability tests" for all machines to all machines communication. Why is ICMP required?
  • Is ICMP traffic required to be allowed for the firewall between OpenShift Container Platform nodes?

Environment

  • Red Hat OpenShift Container Platform (RHOCP) 4.x

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