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Chapter 11. Monitoring Images
11.1. Overview
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11.2. Viewing Images Statistics
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OpenShift Container Platform 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:
$ oc adm 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 186.07MiBThe 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
11.3. Viewing ImageStreams Statistics
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OpenShift Container Platform can display several usage statistics about all the ImageStreams.
To view the usage statistics:
$ oc adm 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 10The command displays the following information:
-
project and name of the
ImageStream -
size of the entire
ImageStreamstored in the internal Red Hat Container Registry -
number of images this particular
ImageStreamis pointing to -
number of layers
ImageStreamconsists of
11.4. Pruning Images
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The information returned from the above commands is helpful when performing image pruning.
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