How to run commands after login to shell command of a container in a VM?

Question

when I ran this command

kubectl exec -it $(kubectl get pods | grep container-name | awk '{print $1}') /bin/sh

I ssh into my container,

/src #

Now - I want to add 2 more commands so I did

kubectl exec -it $(kubectl get pods | grep container-name | awk '{print $1}') /bin/sh ; cd app/Http/Controllers; ls -lrt;

but I still see this

/src #

I am supposed to see this

/src # cd app/Http/Controllers; ls -lrt;                                                
total 44                                                                                
-rw-r--r--    1 root     root           361 Jun 11 11:27 Controller.php                   
-rw-r--r--    1 root     root          1734 Jun 11 11:27 ClientController.php             
-rw-r--r--    1 root     root          1702 Jun 11 11:27 BroadcastController.php        
-rw-r--r--    1 root     root          5257 Jun 17 15:24 NodeController.php              
-rw-r--r--    1 root     root          2844 Jun 17 20:21 AccountController.php          
/src/app/Http/Controllers #

can you try : `kubectl exec -it $(kubectl get pods | grep container-name | awk '{print $1}') -- bash -c "cd app/Http/Controllers && ls -lrt" ` or `kubectl exec -it $(kubectl get pods | grep container-name | awk '{print $1}') -- sh -c "cd app/Http/Controllers && ls -lrt"` — Thanh Nguyen Van, Jun 18 '19 at 02:51
@ThanhNguyenVan : it doesn't seem to work... see this https://i.imgur.com/ZVe47O4.png — code-8, Jun 18 '19 at 13:18

Siyavash vaez afshar · Answer 1 · 2019-06-19T15:41:03.377

1

There is no need to go inside docker container do as below

kubectl exec -it $(kubectl get pods | grep container-name | awk '{print $1}') -- ls -lrt /app/Http/Controllers;

kubectl will execute every command inside container which comes after --. also you can mount your target directory and perform ls on localhost. create a yaml file like the one here.

apiVersion: v1
kind: Pod
metadata:
  name: test-container
spec:
  containers:
  - name: my-container
    image: my-container
    volumeMounts:
    - name: my-storage
      mountPath: /data/
  volumes:
  - name: my-storage
    hostPath:
        # directory location on host
        path: /opt/data
        # this field is optional
        type: Directory

then run this command kubectl apply -f your-file.yaml

edited Jun 19 '19 at 15:41

answered Jun 18 '19 at 06:33

Siyavash vaez afshar

1,303
10
12

it doesn't seem to work... see this https://i.imgur.com/ZVe47O4.png – code-8 Jun 18 '19 at 13:17
edited my answer , run it see if it is working or not. the problem is after -- bash or sh will execute the commands and cd is not part of them. check following link for more info https://stackoverflow.com/questions/3741148/location-of-cd-executable – Siyavash vaez afshar Jun 18 '19 at 15:28
How comes u don't need /bin/sh ?? – code-8 Jun 18 '19 at 15:32
You latest answer return similar error: https://i.imgur.com/suN0pOJ.png – code-8 Jun 18 '19 at 15:33
that's not bug, simply tells you there is no /app/http directory or Controllers file. – Siyavash vaez afshar Jun 18 '19 at 17:03
do this, kubectl exec -it bash/sh. after that do ls manually to see if the directory exists. – Siyavash vaez afshar Jun 18 '19 at 17:04
yes directory exist. See this : https://i.imgur.com/cwTE8g9.png - I think you have an extra trailing `/` in front of the `/app/` , it should be `app/` – code-8 Jun 18 '19 at 18:15
I tried that, it seems to work, but it - auto existing out of my prompt... I want it to stay. – code-8 Jun 18 '19 at 18:18
Do u know why ? It exiting the prompt. – code-8 Jun 19 '19 at 00:08
guess there is no way to do what you want in on line. why do you want to stay attach after ls command? wouldn't it better if you mount tmp directory and access it from host? – Siyavash vaez afshar Jun 19 '19 at 05:59

How to run commands after login to shell command of a container in a VM?

1 Answers1