# Functions
Register all metrics.
# Variables
ContainerActionsCounter records the number of container operations.
ContainerActionsTimer records the time cost of each container action.
ContainerSuccessActionsCounter records the number of container success operations.
EngineVersion records the version and commit information of the engine process.
ImageActionsCounter records the number of image operations.
ImageActionsTimer records the time cost of each image action.
ImagePullSummary records the summary of pulling image latency.
ImageSuccessActionsCounter the number of image success operations.