Difference between revisions of "Kubectl cp"

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{{lc}}
 
{{lc}}
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kubectl cp Copy files and directories to and from containers and between containers. https://spacelift.io/blog/kubectl-cp
 
* https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#cp
 
* https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#cp
 
  [[kubectl]] cp
 
  [[kubectl]] cp
 +
[[kubectl cp --help]]
  
−
  kubectl cp youfile.txt remotepod:/yourdestinationdata
+
  kubectl cp YourRemoteContainer:/yourdestinationdatafolder/ /your/local/folder/
−
<pre>
+
kubectl cp YourNamespace/YourRemoteContainer:/yourdestinationdata/ /your/local/folder/
−
kubectl cp --help
 
−
Copy files and directories to and from containers.
 
  
−
Examples:
+
  kubectl cp youfile.txt YourRemoteContainer:/yourdestinationdata
−
  # !!!Important Note!!!
+
kubectl cp /your/local/folder/* [[YourRemoteContainer]]:/yourdestinationdata
−
  # Requires that the 'tar' binary is present in your container
 
−
  # image. If 'tar' is not present, 'kubectl cp' will fail.
 
−
  #
 
−
  # For advanced use cases, such as symlinks, wildcard expansion or
 
−
  # file mode preservation, consider using 'kubectl exec'.
 
  
−
  # Copy /tmp/foo local file to /tmp/bar in a remote pod in namespace <some-namespace>
 
−
  tar cf - /tmp/foo | kubectl exec -i -n <some-namespace> <some-pod> -- tar xf - -C /tmp/bar
 
−
 
−
  # Copy /tmp/foo from a remote pod to /tmp/bar locally
 
−
  kubectl exec -n <some-namespace> <some-pod> -- tar cf - /tmp/foo | tar xf - -C /tmp/bar
 
−
 
−
  # Copy /tmp/foo_dir local directory to /tmp/bar_dir in a remote pod in the default namespace
 
−
  kubectl cp /tmp/foo_dir <some-pod>:/tmp/bar_dir
 
−
 
−
  # Copy /tmp/foo local file to /tmp/bar in a remote pod in a specific container
 
−
  kubectl cp /tmp/foo <some-pod>:/tmp/bar -c <specific-container>
 
−
 
−
  # Copy /tmp/foo local file to /tmp/bar in a remote pod in namespace <some-namespace>
 
−
  kubectl cp /tmp/foo <some-namespace>/<some-pod>:/tmp/bar
 
−
 
−
  # Copy /tmp/foo from a remote pod to /tmp/bar locally
 
−
  kubectl cp <some-namespace>/<some-pod>:/tmp/foo /tmp/bar
 
−
 
−
Options:
 
−
    -c, --container='':
 
−
        Container name. If omitted, use the kubectl.kubernetes.io/default-container annotation for
 
−
        selecting the container to be attached or the first container in the pod will be chosen
 
−
 
−
    --no-preserve=false:
 
−
        The copied file/directory's ownership and permissions will not be preserved in the
 
−
        container
 
−
 
−
    --retries=0:
 
−
        Set number of retries to complete a copy operation from a container. Specify 0 to disable
 
−
        or any negative value for infinite retrying. The default is 0 (no retry).
 
−
 
−
Usage:
 
−
  kubectl cp <file-spec-src> <file-spec-dest> [options]
 
−
 
−
Use "kubectl options" for a list of global command-line options (applies to all commands).
 
−
</pre>
 
  
  
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  [[kubectl exec myalpine -- df -kh]]
 
  [[kubectl exec myalpine -- df -kh]]
 
  [[mount]] | [[grep ^/dev/]] | grep -v /etc | awk '{print $3}'
 
  [[mount]] | [[grep ^/dev/]] | grep -v /etc | awk '{print $3}'
 +
 +
 +
== Errors ==
 +
 +
[[error: source and destination are required]]
 +
Solution: remove trailing /* from your local directory name
 +
 +
[[error: unable to upgrade connection]]: [[container not found]]("your-container")
 +
 +
 +
== Related ==
 +
* [[Velero]]
 +
* <code>[[docker cp]]</code>
 +
* [[Kube-dump]]
 +
* <code>[[kubectl.kubernetes.io/default-container]]</code>
 +
* [[kubectl exec]]
  
 
== See also ==
 
== See also ==
 +
* {{kubectl cp}}
 
* {{cp}}
 
* {{cp}}
−
* {{kubectl}}
 
  
 
[[Category:Kubectl]]
 
[[Category:Kubectl]]

Latest revision as of 12:34, 8 February 2024

kubectl cp Copy files and directories to and from containers and between containers. https://spacelift.io/blog/kubectl-cp 

kubectl cp
kubectl cp --help

kubectl cp YourRemoteContainer:/yourdestinationdatafolder/ /your/local/folder/
kubectl cp YourNamespace/YourRemoteContainer:/yourdestinationdata/ /your/local/folder/

kubectl cp youfile.txt YourRemoteContainer:/yourdestinationdata
kubectl cp /your/local/folder/* YourRemoteContainer:/yourdestinationdata




kubectl apply -f

https://stackoverflow.com/questions/50375826/kubernetes-how-to-download-a-persistentvolumes-content 

 apiVersion: v1
kind: Pod
metadata:
  name: myalpinewithvolume
spec:
  containers:
  - name: alpine
    image: alpine:latest
    command: ['ash']
    tty: true
    stdin: true
    volumeMounts:
    - name: myvolume
      mountPath: /myvolume
  volumes:
  - name: myvolume
    persistentVolumeClaim:
      claimName: myPVCtoMount

kubectl cp myalpinedataaccess:/data data/
tar: removing leading '/' from member names



kubectl exec <pod_name> -- ls -la /



kubectl exec myalpine -- df -kh
mount | grep ^/dev/ | grep -v /etc | awk '{print $3}'


Errors[edit]

error: source and destination are required
Solution: remove trailing /* from your local directory name 

error: unable to upgrade connection: container not found("your-container")


Related[edit]

See also[edit]

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