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generated-tls-issuer-*.yml uses apiKeySecretRef instead of apiTokenSecretRef with cloudflare dns

Open courupteddata opened this issue 4 years ago • 0 comments

Expected Behaviour

Instead of giving cert-manager broad control of CloudFlare DNS, allow for a restricted token to be used. I found myself having to change apiKeySecretRef to apiTokenSecretRef and that allowed the cert to be issued correctly.

Current Behaviour

By changing from a global apiKey to a configurable apiToken, it would allow users better control and risk management. If the apiKey were to be exposed then it's possible for more damage to be done than a revocable and configurable apiToken.

Possible Solution

I would recommended making this an option in the init.yml to use an apiToken instead of an apiKey. So under tls_config for CloudFlare it would have an added option "use_token: false", false being default to prevent breaking actively deployed/rebuilding systems. Then in templates/k8s/tls/issuer-*.yml adding extra if statement that would flip "apiKeySecretRef" to "apiTokenSecretRef" if use_token was true.

Context

I wished to create a restricted CloudFlare API Token so that ofc would only have access to one domain. I did not feel comfortable risking all of my domains if I messed up the security of the Kubernetes cluster. I personally am good with my manual fix but I am not happy to say it took me a few hours to troubleshoot this, so I wish to prevent others from having the same headache.

Your Environment

DigitalOcean DOKS with 3 (2 vCPU, 4GiB RAM) nodes. CloudFlare DNS for tls issuing (because DigitalOcean doesn't provide dnssec). Created a CloudFlare API Token from the template (Edit Zone DNS) and adding a Zone/Zone/Read to permissions in addition to the existing Zone/DNS/Edit that the template provided. I then restricted the Zone Resources to just one domain.

courupteddata avatar May 22 '20 03:05 courupteddata