$ 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 186.07MiB
- Documentation
- OKD
- Cluster Administration
- Monitoring Images
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- About
- What's New?
- Getting Started
- Architecture
- Container Security Guide
- Installation and Configuration
- Overview
- Installing a Cluster
- Setting up the Registry
- Setting up a Router
- Upgrading a Cluster
- Master and Node Configuration
- Adding Hosts to an Existing Cluster
- Loading the Default Image Streams and Templates
- Configuring Custom Certificates
- Redeploying Certificates
- Configuring Authentication and User Agent
- Syncing Groups With LDAP
- Configuring LDAP failover
- Configuring the SDN
- Configuring Nuage SDN
- Configuring for AWS
- Configuring for OpenStack
- Configuring for GCE
- Configuring for Azure
- Configuring for VMWare vSphere
- Configuring Persistent Storage
- Overview
- Using NFS
- Using GlusterFS
- Using OpenStack Cinder
- Using Ceph RBD
- Using AWS Elastic Block Store
- Using GCE Persistent Disk
- Using iSCSI
- Using Fibre Channel
- Using Azure Disk
- Using Azure File
- Using FlexVolume
- Using VMware vSphere volumes for persistent storage
- Dynamic Provisioning and Creating Storage Classes
- Volume Security
- Selector-Label Volume Binding
- Enabling Controller-managed Attachment and Detachment
- Persistent Storage Examples
- Overview
- Sharing an NFS PV Across Two Pods
- Using Ceph RBD for persistent storage
- Using Ceph RBD for dynamic provisioning
- Complete Example Using GlusterFS
- Dynamic Provisioning Example Using Containerized GlusterFS
- Dynamic Provisioning Example Using Dedicated GlusterFS
- Containerized Heketi for Managing Dedicated GlusterFS
- Mounting Volumes To Privileged Pods
- Backing Docker Registry with GlusterFS Storage
- Binding Persistent Volumes by Label
- Using StorageClasses for Dynamic Provisioning
- Using StorageClasses for Existing Legacy Storage
- Configuring Azure Blob Storage for Integrated Docker Registry
- Working with HTTP Proxies
- Configuring Global Build Defaults and Overrides
- Configuring Pipeline Execution
- Configuring Route Timeouts
- Configuring Native Container Routing
- Routing from Edge Load Balancers
- Aggregating Container Logs
- Aggregate Logging Sizing Guidelines
- Enabling Cluster Metrics
- Customizing the Web Console
- Deploying External Persistent Volume Provisioners
- Cluster Administration
- Overview
- Managing Nodes
- Managing Users
- Managing Projects
- Managing Pods
- Managing Networking
- Configuring Service Accounts
- Managing Authorization Policies
- Image Policy
- Image Signatures
- Scoped Tokens
- Monitoring Images
- Managing Security Context Constraints
- Scheduling
- Setting Quotas
- Setting Multi-Project Quotas
- Setting Limit Ranges
- Pruning Objects
- Garbage Collection
- Allocating Node Resources
- Opaque Integer Resources
- Overcommitting
- Assigning Unique External IPs for Ingress Traffic
- Out of Resource Handling
- Monitoring and Debugging Routers
- High Availability
- IPtables
- Securing Builds by Strategy
- Restricting Application Capabilities Using Seccomp
- Sysctls
- Encrypting Data at Datastore Layer
- Encrypting Hosts with IPsec
- Building Dependency Trees
- Backup and Restore
- Troubleshooting Networking
- Diagnostics Tool
- Idling Applications
- Analyzing Cluster Capacity
- Scaling and Performance Guide
- CLI Reference
- Developer Guide
- Overview
- Application Life Cycle Management
- Authentication
- Authorization
- Projects
- Migrating Applications
- Tutorials
- Builds
- Deployments
- Templates
- Opening a Remote Shell to Containers
- Service Accounts
- Managing Images
- Quotas and Limit Ranges
- Injecting Information into Pods Using Pod Presets
- Getting Traffic into a Cluster
- Routes
- Integrating External Services
- Secrets
- ConfigMaps
- Downward API
- Projected Volumes
- Using Daemonsets
- Pod Autoscaling
- Managing Volumes
- Using Persistent Volumes
- Executing Remote Commands
- Copying Files
- Port Forwarding
- Shared Memory
- Application Health
- Events
- Managing Environment Variables
- Jobs
- Cron Jobs
- Create from URL
- Creating Images
- Using Images
- REST API Reference
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Monitoring Images
Viewing Images Statistics
OKD 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:
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
Viewing ImageStreams Statistics
OKD 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 10
The 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
Pruning Images
The information returned from the above commands is helpful when performing image pruning.