Hi, 

According to this documentation 
<https://www.google.com/url?q=https%3A%2F%2Fgithub.com%2Fmwielgus%2Fkubernetes.github.io%2Fblob%2Fcustom-metrics%2Fdocs%2Fuser-guide%2Fhorizontal-pod-autoscaling%2Findex.md%23support-for-custom-metrics&sa=D&sntz=1&usg=AFQjCNEdjy45Y8gnwVvw0Y5qdqffQsvMBQ>,
 a 
Kubernetes Pod exposing custom metrics needs to be bridged to the node 
using a NodePort (or HostPort). While it works great using a single Pod, 
other Pods created by the HPA are unable to start, since the NodePort they 
are given is already taken by Pod #1. Is this system specifically designed 
to run a single Pod per node (which I find hard to believe), or am I 
missing something?

Thanks,

Sander


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