kubernetes-tramp just hangs when trying to load file in container.

[rthille]

I can complete the pod name, and see that Emacs gets a shell (sh) in the container, but after I hit return after typing out the filename '/kubectl:integrator-5d8cd58975-v75t7:/root/setup.py' and hitting return, Emacs just hangs. I see in the container that a new 'bash' process is created, but that seems to be the entire command line (as shown by cat /proc/<pid>/cmdline). It seems from looking at the code that there should be arguments "-i" "-c" passed to the bash shell, but they aren't getting there? Or perhaps Tramp is trying to invoke some command in the container that isn't present (though our containers aren't really stripped down).

I've tried turning up the tramp debug level and viewing the trace log but nothing there jumped out at me.

Any suggestions on what to try next?

[rthille]

Messages buffer output:

Tramp: Opening connection for integrator-5d8cd58975-v75t7 using kubectl...
Tramp: Sending command ‘exec kubectl  exec -it  integrator-5d8cd58975-v75t7 sh’
Tramp: Waiting for prompts from remote shell...failed
Tramp: Opening connection for integrator-5d8cd58975-v75t7 using kubectl...failed
Tramp: Opening connection for integrator-5d8cd58975-v75t7 using kubectl...
Tramp: Sending command ‘exec kubectl  exec -it  integrator-5d8cd58975-v75t7 sh’
Tramp: Waiting for prompts from remote shell...done
Tramp: Found remote shell prompt on ‘integrator-5d8cd58975-v75t7’
Tramp: Opening connection for integrator-5d8cd58975-v75t7 using kubectl...failed

[edouardklein]

I had the same problem. I solved it by adding the following to my .emacs, inspired by https://willschenk.com/articles/2020/tramp_tricks/:

  (push
   (cons
    "k8s"
    '((tramp-login-program "kubectl")
      (tramp-login-args (("exec") ("-it") ("%h") ("--") ("/bin/bash")))
      (tramp-remote-shell "/bin/sh")
      (tramp-remote-shell-args ("-i") ("-c"))))
   tramp-methods)

The just find-file /k8s:YOURPOD:/path/to/your/file

[admirito]

And my problem was fixed with the following:

(push
 (cons
  "kubectl"
  '((tramp-login-program "kubectl")
    (tramp-login-args (("exec" "-it") ("-u" "%u") ("%h") ("--") ("sh")))
    (tramp-remote-shell "/bin/sh")
    (tramp-remote-shell-args ("-i" "-c"))))
 tramp-methods)