Liferay PaaS - We enabled auto-scaling but no new node started when the memory utilization reached the threshold
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Issue
- We enabled auto-scaling in Liferay PaaS environment.
- We saw that the average memory utilization of the nodes reached the threshold we set up in the LCP.json file, but no new nodes were started.
Resolution
- There is a tolerance range for memory scale which is 0.1 by default. This is based on Kubernetes' Algorithm for Autoscaling. Please see the documentation here: Algorithm details
- This means that (with the default 80% memory threshold configured in LCP.json) a new instance would start if the average utilization is around 88%.
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