Gcloud VM logging strategy

I have a group of instances Container VMs

that runs my application in a docker container.

I am trying to find a good strategy for managing application logs for docker + MEAN + Google Cloud Compute Machines

.

I see logs in separate containers with docker logs [container_id]

.

However, if I stop and start the virtual machine, I lose those logs. I also have VMs dynamically added Auto scaler

and would like to have a convenient way to access the logs.

Stack MEAN

and logging tool bunyan

.

Is it possible to centralize or consolidate logs from all VMS in one permanent location?

any suggestions?

UPDATE: I installed the agent fluentd

and now I can see the logs when I manually run thins in the shell:logger "some message for testing"

However, the logs from mine container vm

from my docker container never show up in the logs.

I still don't know how to get these docker logs to enter google cloud logs. It is expected to be built automatically.

amuses Leo