Skip to content

Latest commit

 

History

History
40 lines (29 loc) · 1.6 KB

image-streaming.md

File metadata and controls

40 lines (29 loc) · 1.6 KB
Raw

Image Streaming

Image streaming enables GKE to stream image data as needed; rather than pulling the entire image up front, GKE retrieves bytes of the image as needed. This allows workloads to initialize without waiting for the entire image to download which leads to improvements in initialization times. In the worst case (where every byte in the image is needed), you experience a lower latency start (because fewer bytes are pulled up front) while completion time is unchanged (the entire image is eventually pulled). In the best case (where only parts of the image are needed), substantial pull and unpacking time are saved by only pulling the needed parts of the image.

Docs:

Setting up Image Streamining on your cluster

Note that you must use Container-Optimized OS with containerd and reference images in Artifact Registry to benefit from image streaming. (There are additional limitations.)

gcloud container clusters create $CLUSTER_NAME \
    --image-type="COS_CONTAINERD" --enable-image-streaming ...

To enable image streaming on an existing cluster:

gcloud container clusters update $CLUSTER_NAME --enable-image-streaming

Note that you can also enable (or disable) image streaming on a per-node pool basis.

Disabling Image Streaming

gcloud container clusters update $CLUSTER_NAME --no-enable-image-streaming