There are many factors that determine the performance of the block storage volumes that you attach to your virtual machine (VM) instances such the Machine type, the numbers of vCpu's or the Disk type. To increase disk performance, you need to either ...

no.scale.down.node.pod.kube.system.unmovable means that "Pod is blocking scale down because it's a non-DaemonSet, non-mirrored, Pod without a PodDisruptionBudget in the kube-system namespace." as there is a lack of PodDisruptionBudget for workloads r...

The project_path function was renamed to common_project_path You can check this StackOverflow post.

The E2 series contain shared-core machine types. These machine types timeshare a physical core which can be a cost-effective method for running small, non-resource intensive apps. If the E2 machine type cannot handle your workloads, the N2 series off...

It'll be best to reach out to Google Cloud Billing Support. The assigned technical support representative can inspect your account to better troubleshoot the issue. All issues related to billing are free of charge.