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6.2. OpenShift CLI (oc) 管理者コマンド

6.2.1. oc adm catalog mirror

operator-registry カタログをミラーリングします。

使用例

  # Mirror an operator-registry image and its contents to a registry
  oc adm catalog mirror quay.io/my/image:latest myregistry.com

  # Mirror an operator-registry image and its contents to a particular namespace in a registry
  oc adm catalog mirror quay.io/my/image:latest myregistry.com/my-namespace

  # Mirror to an airgapped registry by first mirroring to files
  oc adm catalog mirror quay.io/my/image:latest file:///local/index
  oc adm catalog mirror file:///local/index/my/image:latest my-airgapped-registry.com

  # Configure a cluster to use a mirrored registry
  oc apply -f manifests/imageContentSourcePolicy.yaml

  # Edit the mirroring mappings and mirror with "oc image mirror" manually
  oc adm catalog mirror --manifests-only quay.io/my/image:latest myregistry.com
  oc image mirror -f manifests/mapping.txt

  # Delete all ImageContentSourcePolicies generated by oc adm catalog mirror
  oc delete imagecontentsourcepolicy -l operators.openshift.org/catalog=true
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6.2.2. oc adm inspect

特定のリソースのデバッグデータを収集します。使用例 

  # Collect debugging data for the "microshift-apiserver"
  oc adm inspect service/kubernetes

  # Collect debugging data for the "microshift-apiserver" and "toptlvm-apiserver"
  oc adm inspect service/kubernetes crd/logicalvolumes.topolvm.io

  # Collect debugging data for services
   oc adm inspect service

  # Collect debugging data for all clusterversions
  oc adm inspect service,crd
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6.2.3. oc adm migrate icsp

imagecontentsourcepolicy ファイルを imagedigestmirrorset ファイルに更新します。

使用例

  # update the imagecontentsourcepolicy.yaml to new imagedigestmirrorset file under directory mydir
  oc adm migrate icsp imagecontentsourcepolicy.yaml --dest-dir mydir
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ノードのログを表示し、フィルターします。

使用例

  # Show kubelet logs from all masters
  oc adm node-logs --role master -u kubelet

  # See what logs are available in masters in /var/logs
  oc adm node-logs --role master --path=/

  # Display cron log file from all masters
  oc adm node-logs --role master --path=cron
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6.2.4. oc adm release extract

更新ペイロードの内容をディスクに抽出します。

使用例

  # Use git to check out the source code for the current cluster release to DIR
  oc adm release extract --git=DIR

  # Extract cloud credential requests for AWS
  oc adm release extract --credentials-requests --cloud=aws

  # Use git to check out the source code for the current cluster release to DIR from linux/s390x image
  # Note: Wildcard filter is not supported. Pass a single os/arch to extract
  oc adm release extract --git=DIR quay.io/openshift-release-dev/ocp-release:4.11.2 --filter-by-os=linux/s390x
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6.2.5. oc adm release info

リリースに関する情報を表示します。

使用例

  # Show information about the cluster's current release
  oc adm release info

  # Show the source code that comprises a release
  oc adm release info 4.11.2 --commit-urls

  # Show the source code difference between two releases
  oc adm release info 4.11.0 4.11.2 --commits

  # Show where the images referenced by the release are located
  oc adm release info quay.io/openshift-release-dev/ocp-release:4.11.2 --pullspecs

  # Show information about linux/s390x image
  # Note: Wildcard filter is not supported. Pass a single os/arch to extract
  oc adm release info quay.io/openshift-release-dev/ocp-release:4.11.2 --filter-by-os=linux/s390x
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6.2.6. oc adm release mirror

リリースを別のイメージレジストリーの場所にミラーリングします。

使用例

  # Perform a dry run showing what would be mirrored, including the mirror objects
  oc adm release mirror 4.11.0 --to myregistry.local/openshift/release \
  --release-image-signature-to-dir /tmp/releases --dry-run

  # Mirror a release into the current directory
  oc adm release mirror 4.11.0 --to file://openshift/release \
  --release-image-signature-to-dir /tmp/releases

  # Mirror a release to another directory in the default location
  oc adm release mirror 4.11.0 --to-dir /tmp/releases

  # Upload a release from the current directory to another server
  oc adm release mirror --from file://openshift/release --to myregistry.com/openshift/release \
  --release-image-signature-to-dir /tmp/releases

  # Mirror the 4.11.0 release to repository registry.example.com and apply signatures to connected cluster
  oc adm release mirror --from=quay.io/openshift-release-dev/ocp-release:4.11.0-x86_64 \
  --to=registry.example.com/your/repository --apply-release-image-signature
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6.2.7. oc adm taint

1 つ以上のノードでテイントを更新します。

使用例

  # Update node 'foo' with a taint with key 'dedicated' and value 'special-user' and effect 'NoSchedule'
  # If a taint with that key and effect already exists, its value is replaced as specified
  oc adm taint nodes foo dedicated=special-user:NoSchedule

  # Remove from node 'foo' the taint with key 'dedicated' and effect 'NoSchedule' if one exists
  oc adm taint nodes foo dedicated:NoSchedule-

  # Remove from node 'foo' all the taints with key 'dedicated'
  oc adm taint nodes foo dedicated-

  # Add a taint with key 'dedicated' on nodes having label mylabel=X
  oc adm taint node -l myLabel=X  dedicated=foo:PreferNoSchedule

  # Add to node 'foo' a taint with key 'bar' and no value
  oc adm taint nodes foo bar:NoSchedule
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6.2.8. oc adm top pod

Pod のリソース (CPU/メモリー) の使用状況を表示します。

使用例

  # Show metrics for all pods in the default namespace
  oc adm top pod

  # Show metrics for all pods in the given namespace
  oc adm top pod --namespace=NAMESPACE

  # Show metrics for a given pod and its containers
  oc adm top pod POD_NAME --containers

  # Show metrics for the pods defined by label name=myLabel
  oc adm top pod -l name=myLabel
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