Is it possible to install curl into busybox in kubernetes pod
Jul 11
I am using busybox to detect my network problem in kubernetes v1.18 pods. I created the busybox like this:
apiVersion: v1
kind: Pod
metadata:
name: busybox
namespace: default
spec:
containers:
- name: busybox
image: busybox:1.28
command:
- sleep
- "3600"
imagePullPolicy: IfNotPresent
restartPolicy: Always
and login to find the kubernetes clusters network situation:
kubectl exec -it busybox /bin/bash
What surprises me is that the busybox does not contain curl. Why does the busybox package not include the curl command? I am searching the internet and find the docs do not talk about how to add curl into busybox. I tried to install curl, but found no way to do this. Is there anyway to add curl package into busybox?
kubernetes1 answer
Accepted answer · original discussion
Jul 11
The short answer, is you cannot.
Why?
Because busybox does not have package manager like: yum, apk, or apt-get ..
Acutally you have two solutions:
1. Either use a modified busybox
You can use other busybox images like progrium/busybox which provides opkg-install as a package manager.
image: progrium/busybox
Then:
kubectl exec -it busybox -- opkg-install curl
2. Or if your concern to use a minimal image, you can use alpine
image: alpine:3.12
then:
kubectl exec -it alpine -- apk --update add curl
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