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Runnning kubectl exec -it <PODNAME> -- /bin/bash is printing a lot of trash of the shell:
) Data frame handling
I0331 17:46:15.486652 3807 logs.go:41] (0xc4201158c0) Data frame received for 5
I0331 17:46:15.486671 3807 logs.go:41] (0xc42094a000) (5) Data frame handling
I0331 17:46:15.486682 3807 logs.go:41] (0xc42094a000) (5) Data frame sent
root@hello-node-2399519400-6q6s3:/# I0331 17:46:16.667823 3807 logs.go:41] (0xc420687680) (3) Writing data frame
I0331 17:46:16.669223 3807 logs.go:41] (0xc4201158c0) Data frame received for 5
I0331 17:46:16.669244 3807 logs.go:41] (0xc42094a000) (5) Data frame handling
I0331 17:46:16.669254 3807 logs.go:41] (0xc42094a000) (5) Data frame sent
root@hello-node-2399519400-6q6s3:/# I0331 17:46:17.331753 3807 logs.go:41] (0xc420687680) (3) Writing data frame
I0331 17:46:17.333338 3807 logs.go:41] (0xc4201158c0) Data frame received for 5
I0331 17:46:17.333358 3807 logs.go:41] (0xc42094a000) (5) Data frame handling
I0331 17:46:17.333369 3807 logs.go:41] (0xc42094a000) (5) Data frame sent
I0331 17:46:17.333922 3807 logs.go:41] (0xc4201158c0) Data frame received for 5
I0331 17:46:17.333943 3807 logs.go:41] (0xc42094a000) (5) Data frame handling
I0331 17:46:17.333956 3807 logs.go:41] (0xc42094a000) (5) Data frame sent
root@hello-node-2399519400-6q6s3:/# I0331 17:46:17.738444 3807 logs.go:41] (0xc420687680) (3) Writing data frame
I0331 17:46:17.740563 3807 logs.go:41] (0xc4201158c0) Data frame received for 5
I0331 17:46:17.740591 3807 logs.go:41] (0xc42094a000) (5) Data frame handling
I0331 17:46:17.740606 3807 logs.go:41] (0xc42094a000) (5) Data frame sent
It is a little bit better without 't' option:
kubectl exec -i hello-4103519535-hcdm6 -- /bin/bash
I0331 18:29:06.918584 4992 logs.go:41] (0xc4200878c0) (0xc4204c5900) Create stream
I0331 18:29:06.918714 4992 logs.go:41] (0xc4200878c0) (0xc4204c5900) Stream added, broadcasting: 1
I0331 18:29:06.928571 4992 logs.go:41] (0xc4200878c0) Reply frame received for 1
I0331 18:29:06.928605 4992 logs.go:41] (0xc4200878c0) (0xc4203ffc20) Create stream
I0331 18:29:06.928614 4992 logs.go:41] (0xc4200878c0) (0xc4203ffc20) Stream added, broadcasting: 3
I0331 18:29:06.930565 4992 logs.go:41] (0xc4200878c0) Reply frame received for 3
I0331 18:29:06.930603 4992 logs.go:41] (0xc4200878c0) (0xc4204c59a0) Create stream
I0331 18:29:06.930615 4992 logs.go:41] (0xc4200878c0) (0xc4204c59a0) Stream added, broadcasting: 5
I0331 18:29:06.932455 4992 logs.go:41] (0xc4200878c0) Reply frame received for 5
I0331 18:29:06.932499 4992 logs.go:41] (0xc4200878c0) (0xc420646000) Create stream
I0331 18:29:06.932511 4992 logs.go:41] (0xc4200878c0) (0xc420646000) Stream added, broadcasting: 7
I0331 18:29:06.935363 4992 logs.go:41] (0xc4200878c0) Reply frame received for 7
echo toto
I0331 18:29:08.943066 4992 logs.go:41] (0xc4203ffc20) (3) Writing data frame
I0331 18:29:08.947811 4992 logs.go:41] (0xc4200878c0) Data frame received for 5
I0331 18:29:08.947837 4992 logs.go:41] (0xc4204c59a0) (5) Data frame handling
I0331 18:29:08.947851 4992 logs.go:41] (0xc4204c59a0) (5) Data frame sent
toto
Is there a way to disable that? Would it come from my environment ? I am still not sure if it comes from Kubernetes or my environment actually.
973
To limit the ability to kubectl exec to pods what you want to do is create a custom Role & RoleBinding that removes the create verb for the pods/exec resource. An easy approach to this might be to copy the default RBAC policies, and then make the appropriate edit and rename.
The exec command streams a shell session into your terminal, similar to ssh or docker exec. kubectl will connect to your cluster, run /bin/sh inside the first container within the demo-pod pod, and forward your terminal's input and output streams to the container's process.
this works for a short time then the logs stop. I have to ctrl-c to get out of kubectl, then restart them.
Just found it:
unset DEBUG fixed it !
117
if you are in cmd run:
set DEBUG=
if you are in powershell :
$env:DEBUG=""
if you are a bash-like shell:
export DEBUG= or unset DEBUG
28
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