No Host Metrics from Metricbeat

[pbecotte]

Chart version:
Latest

Kubernetes version:
1.16.3

Kubernetes provider: E.g. GKE (Google Kubernetes Engine)
Rancher RKE on Digital Ocean
Helm Version:
3

helm get release output
n/a (argocd)
e.g. helm get elasticsearch (replace elasticsearch with the name of your helm release)

Steps to reproduce:

Install the chart, go to Kibana, look at the metrics dashboard for a host. No metrics show up.

Metricbeat scrapes this data from /proc. We mount /proc in the container at /hostfs/proc and in the config we set system.hostfs: /hostfs. However, that option does not appear in the current metricbeat configuration at metricbeat.yaml. It appears that this is now a command line option as can be seen Here. The recommended deployment manifest Here also specifies this as a command line option.