Comments (3)
Hi @falzm,
How did you configure the auth backend? (https://www.vaultproject.io/api/auth/kubernetes/index.html#configure-method)
Did you provide a token_reviewer_jwt
?
from vault-plugin-auth-kubernetes.
I've configured the auth backend this way:
$ vault write auth/kubernetes/config \
kubernetes_host=https://x.x.x.x \
kubernetes_ca_cert=@k8s_ca.crt \
token_reviewer_jwt=@vault_sa.token
With the referenced files generated such as:
$ export K8S_VAULT_SA_SECRET=$(kubectl get serviceaccount vault -o json | jq -r .secrets[0].name)
$ kubectl get secret ${K8S_VAULT_SA_SECRET} -o json | jq -r '.data["token"]' | base64 -d ; echo > vault_sa.token
$ kubectl get secret ${K8S_VAULT_SA_SECRET} -o json | jq -r '.data["ca.crt"]' | base64 -d > k8s_ca.crt
from vault-plugin-auth-kubernetes.
I've found the problem, it is the same as this one: my file vault_sa.token
ends with a trailing newline character (\n
) and Vault doesn't trim it out before passing the JWT to the k8s TokenReview API. By removing the trailing character it works as intended.
I'll submit a PR fixing this bug.
from vault-plugin-auth-kubernetes.
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from vault-plugin-auth-kubernetes.