Gitlab managed kubernetes runner - how to add CA certs?

I’ve got a fresh Gitlab instance with a runner on Kubernetes, with the runner installed through admin -> kubernetes -> applications, but all my jobs are failing because of CA certificate verification errors from the runner.

How do I provide this runner with the CA certs I’m using on the Gitlab instance?

oc get secret gitlab-gitlab-tls -n gitlab-system --template=‘{{ index .data “tls.crt” }}’ | base64 --decode > gitlab.crt
create the secret with that file.
#oc create secret generic runnertls --from-file=tls.crt=gitlab.crt -n gitlab-system

add this to your runner spec section.
spec:
ca: runnertls
config: config1
gitlabUrl: ‘’
token: runnersecret