CODEWITHSUNDEEP
kubernetes
zillani
zillani

Reputation: 1090

How to copy file from container in a pod in a specific namespace?

Say I have, my-namespace -> my-pod -> my-container and I have a file located at my-container:/opt/tomcat/logs/catalina.2017-05-02.log. I have applied the below command to copy the file which isn't working,

kubectl cp my-namepace/my-pod:/opt/tomcat/logs/catalina.2017-05-02.log -c my-container .

Note: I have the tar binary on my container

Error:

tar: Removing leading `/' from member names
error: open .: is a directory

Upvotes: 45

Views: 75646

Answers (9)

Adiii
Adiii

Reputation: 60084

I tried all the given options here above it resolve the error but the warning still appears.

tar: Removing leading `/' from member names

BTW the copied file still okay just the warning is a bit confusing.

If you are using absolute path kubectl cp namespace/pod:/somepath/somfile somepath/somefile will print the same warning

So if the file is in the working directory of the container the remove the abosulte path and the warning will disappear.

k cp "default/name-redis-6d66b898d6-8xdkb:dump.rdb" ./dump.rdb

enter image description here

I moved the wanted file to the working dir in the pod

Upvotes: 2

Pardeep Malik
Pardeep Malik

Reputation: 81

Source and Destination file name should be same, the below command worked for me:

kubectl cp namespace/pod-name:abc.log  .\Desktop\abc.log

Upvotes: 8

Raajev
Raajev

Reputation: 31

Destination should also be a filename. so, command should be 

kubectl cp my-namepace/my-pod:/opt/tomcat/logs/catalina.2017-05-02.log -c my-container ./catalina.2017-05-02.log

"cat" command works well for ascii files. for other files there would be limitations and copied files might be corrupted.

Upvotes: 3

user1321759
user1321759

Reputation: 1744

Remove "/" after ":" when specifying container file.

So this

kubectl cp my-namepace/my-pod:/opt/tomcat/logs/catalina.2017-05-02.log -c my-container .

will turn into this:

kubectl cp my-namepace/my-pod:opt/tomcat/logs/catalina.2017-05-02.log -c my-container .

Upvotes: 2

Akash Sharma
Akash Sharma

Reputation: 757

Following command kubectl cp NameSpace/POD_NAME:/DIR/FILE_NAME /tmp/ works for me.

Upvotes: 4

mati kepa
mati kepa

Reputation: 3231

I found this usage the most convenient for me 

kubectl cp /tmp/file <your_namespace>/<your_pod>:/tmp/newfile

and other direction

kubectl cp <your_namespace>/<your_pod>:/tmp/file /tmp/newfile

Upvotes: 3

Whimusical
Whimusical

Reputation: 6649

I noticed it fails when you try to specify the namespace (both as a prefix to the pod identifier and by using -n option) Using the pod identifier alone works for me:

kubectl cp postgres-1111111111-11abc:/tmp/dump.csv dump

Upvotes: 5

Gregory Patmore
Gregory Patmore

Reputation: 1164

this works for me:

$(kubectl exec <pod-name> [-c <container-name>] -it -- cat <file-path>) > <local-file>

Upvotes: 30

Simon I
Simon I

Reputation: 3586

What you are asking kubectl to do is copy the file catalina.2017-05-02.log to the current context, but the current context is a directory. The error is stating that you can not copy a file to have the name of a directory.

Try giving the copied version of the file a name:

kubectl cp my-namepace/my-pod:/opt/tomcat/logs/catalina.2017-05-02.log -c my-container ./catalina.2017-05-02.log.

Upvotes: 55

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