Hi,
How can I autoscale Wowza instance in Google Cloud Platform?
I would like to use managed instance group. Is it feasible?
I am confused, Please help me 
Thank you.
Hello @Pham Tuyen, I am checking for you. In the meantime, have you seen this document?
We have not tested this specific scenario @Pham Tuyen but we can offer you these two support docs to assist you in your setup with Wowza and Google Cloud.
https://www.wowza.com/docs/how-to-load-balance-between-servers-using-google-cloud-platform
https://www.wowza.com/docs/set-up-wowza-streaming-engine-on-google-cloud-platform