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At what level of swap and memory usage should I have alerts triggered?
We have a 10 nodes cluster. We have nagios monitoring all nodes. By default we trigger alerts when a system uses more than 90% RAM and 20% SWAP. We noticed that our nodes will start using SWAP faster than RAM (39% RAM and 25% SWAP - I know odd). Therefore, what would be the recommended alert thresholds for both?
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