OpenShift Origin can display several usage statistics about all the images it manages. In other words, all the images pushed to the internal registry either directly or through a build.
To view the usage statistics:
$ oadm top images NAME IMAGESTREAMTAG PARENTS USAGE METADATA STORAGE sha256:80c985739a78b openshift/python (3.5) yes 303.12MiB sha256:64461b5111fc7 openshift/ruby (2.2) yes 234.33MiB sha256:0e19a0290ddc1 test/ruby-ex (latest) sha256:64461b5111fc71ec Deployment: ruby-ex-1/test yes 150.65MiB sha256:a968c61adad58 test/django-ex (latest) sha256:80c985739a78b760 Deployment: django-ex-1/test yes 186.07MiB
The command displays the following information:
image ID
project, name, and tag of the accompanying ImageStreamTag
potential parents of the image, using their ID
information about where the image is being used
flag informing whether the image contains proper Docker metadata information
size of the image
OpenShift Origin can display several usage statistics about all the
ImageStreams.
To view the usage statistics:
$ oadm top imagestreams NAME STORAGE IMAGES LAYERS openshift/python 1.21GiB 4 36 openshift/ruby 717.76MiB 3 27 test/ruby-ex 150.65MiB 1 10 test/django-ex 186.07MiB 1 10
The command displays the following information:
project and name of the ImageStream
size of the entire ImageStream stored in the internal
Red Hat Container Registry
number of images this particular ImageStream is pointing to
number of layers ImageStream consists of
The information returned from the above commands is helpful when performing image pruning.