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# rke2a
adamant-kite-43734
05/19/2025, 7:30 AMThis message was deleted.
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nutritious-tomato-14686
05/19/2025, 8:09 PMIf your Rancher hosted cluster has decent hardware (ie isn't something like a Rasberry Pi) you should be just fine to simplify the setup to
1. 3 ctrl/etcd, 1 agent
2. all remaining agents (workers)
nutritious-tomato-14686
05/19/2025, 8:11 PMFor scale testing, we generally recommend adding agents in batches 50, purely to prevent the Control plane (CP) nodes from needing more memory than they would at a steady state.
nutritious-tomato-14686
05/19/2025, 8:12 PMIf you don't care about the memory spikes and have plenty of excess RAM on the CP, you can add agents in batches of 100+
🙌 1
b
better-ocean-90584
05/20/2025, 3:25 AMThanks! Adding 3 ctrl at once - this has been a pretty fragile operation with rke1, often leading to a stuck cluster. I haven't yet seen the same with rke2, but just for safety thought of a sequential addition of etcds. Too safe?
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