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[WIP] BZ1281651: adding etcd node reqs #3078

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[WIP] BZ1281651: adding etcd node reqs #3078

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6 changes: 5 additions & 1 deletion install_config/install/prerequisites.adoc
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Expand Up @@ -79,7 +79,11 @@ back end; see xref:configuring-docker-storage[Configuring Docker Storage]
below.

|External etcd Nodes
|Minimum 20 GB hard disk space for etcd data.
a| * Horizontally scale etcd based on fault tolerance needs; a minimum etcd cluster size of 3 is recommended.
* Separate the etcd service from other services (the masters) onto dedicated VMs.
* Provide resources sufficient to handle the workload: 6 vCPUs, 64 GB RAM, 50-100 GB of disk space.
* Recommend aggressive object pruning, so that the etcd cluster only contains objects that are in use. Pruning should occur during off-peak hours. Monitor and reduce the number of image layers that are being produced.

|===

[IMPORTANT]
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