How to get shell using curl post request in kubernetes? - bash

Question

I am creating a pod spec using json which when run will give me a shell on the underlying node as shown below.
overrides=$(cat <<EOF
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"name": "admin-shell"
},
"spec": {
"containers": [
{
"name": "admin-shell",
"securityContext": {
"privileged": true
},
"image": "alpine:latest",
"args": ["chroot", "/kdet", "/bin/bash"],
"stdin": true,
"stdinOnce": true,
"tty": true,
"volumeMounts": [{
"name": "kdet",
"mountPath": "/kdet"
}]
}],
"volumes": [{
"name": "kdet",
"hostPath": {
"path": "/",
"type": "Directory"
}
}]
}
}
EOF
)
kubectl run --image alpine:latest --rm --restart=Never --overrides="$foo" -ti test
If you don't see a command prompt, try pressing enter.
[root#admin-shell /]# exit
exit
pod "admin-shell" deleted
However, when I try to launch the pod using curl with the config saved in api.json, the pod is being created, however I don't get the shell as I got in the previous step.
>curl -k $APISERVER/api/v1/namespaces/default/pods \
-XPOST -H 'Content-Type: application/json' \
-d#api.json \
--header "Authorization: Bearer $TOKEN"
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 2900 0 2250 100 650 13005 3757 --:--:-- --:--:-- --:--:-- 16763
{
"phase": "Pending",
"qosClass": "BestEffort"
}
Can you please help me how can I get the shell using curl?