This series was started in 2017 and most of it is still valid. However I have revisited the topic in this 2020 version of the series
I have done a blog series about collecting and displaying performance metrics from a vSphere environment with tools like PowerCLI, InfluxDB and Grafana.
The PowerCLI scripts that are used to collect the metrics are found on GitHub
At VMworld Europe 2018 I did a session based on this series which was recorded. Check this post for more information and link to the recording
At VMworld Europe 2018 I did a session based on the VCSA monitoring part which was recorded. Check this post for more information and link to the recording
Hopefully the series can give you some ideas and inspiration on how to do performance monitoring in your environment. If you have any questions or comments feel free to contact me on Twitter