How to copy files from kubernetes Pods to local system

Question

I\'m trying to copy files from Kubernetes Pods to my local system. I am getting the below error while running following command:

kubectl cp aks-ssh2-6cd4948         


        

Answer 1

Kubernetes gives a file not found error when user does not have permissions to a pod. That was my problem.

Answer 2

If anyone uses windows pods, it may be hard to get files copied to the pods from local machine with those linux paths for kubectl cp command:

Procedure to copy files from local machine to kubernetes pod: (especially windows container)

1. I want to copy node.aspx from my local machine to podname:\c:\inetpub\wwwroot
2. First upload Node.aspx to your cloud drive, path will be /home/{your_username} in my case /home/pranesh
3. Then find out the pod name, in my case its aspx-deployment-84597d88f5-pk5nh, follow below command

PS /home/pranesh> kubectl cp /home/pranesh/Node.aspx aspx-deployment-84597d88f5-pk5nh:/Node.aspx

4. This copies the file to c drive of container,
5. then move file from c drive to required path with powershell

PS /home/pranesh> kubectl exec aspx-deployment-84597d88f5-pk5nh powershell "Copy-Item "C:\Node.aspx" -Destination "C:\inetpub\wwwroot""

6. Use the reverse procedure for copying from container to cloud drive and download.

Answer 3

You can mount a local directory into the pod.

Update your aks-ssh yaml file:

spec:
  ...
  containers:
    ...
    volumeMounts:
    - name: test-dir
      mountPath: /home/azureuser
    ...
  volumes:
  - name: test-dir
    hostPath:
      path: /path/to/your/local/dir

Now you can access your files in the local directory.

Answer 4

As stated inkubectl help:

kubectl cp --help
Copy files and directories to and from containers.
Examples:
# !!!Important Note!!!
# Requires that the 'tar' binary is present in your container
# image.  If 'tar' is not present, 'kubectl cp' will fail.

# 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, the first container in the pod will be chosen

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).

You can also login to your Containter and check if file is there:

kubectl exec -it aks-ssh2-6cd4948f6f-fp9tl /bin/bash
ls -la /home/azureuser/test.cap

If this still doesn't work, try:

You may try to copy your files to workdir and then retry to copy them using just their names. It's weird, but it works for now.`

Consider advice of kchugalinskiy here #58692.