Cert-manager letsencrypt certificate request fails with "authorization must be pending"

Error I get is:

Error accepting challenge: 400 urn:ietf:params:acme:error:malformed: Unable to update challenge :: authorization must be pending

My domain is: accounting-service-public.stag.aws.worksome.net

I ran this command: cert-manager (1.6.1 helm chart) on kubernetes in AWS/Fargate more details

It produced this output: all details are here

My web server is (include version): nginx (ingress-nginx, 4.0.13)

The operating system my web server runs on is (include version): N/A

My hosting provider, if applicable, is: AWS

I can login to a root shell on my machine (yes or no, or I don't know): limited applicability, not sure if relevant

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): kubectl, helm, kubernetes-dashboard etc.

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): N/A

I will only point out a couple things. Need to be away soon

To answer a question on your git: crt.sh only shows issued production certs. You are using the staging server, which is great while testing, but even if issued they do not show in crt.sh. The test certs should appear on your machine though.

Also, I see your DNS is CNAME'd to an AWS Elastic Load Balancer. This is likely complicating things as all servers that could process an http challenge must respond identically. This usually takes some care on constructing your requests and managing certs. Using a DNS challenge might simplify the challenge part but an ELB still has challenges managing the certs.

Can you use an AWS issued cert (ACM) in the Load Balancer?



Thanks for the reply.
I tried, for the sake of it, with the letsencrypt production issuer too - no luck (so if it were, crt.sh would have shown something, I guess).

I wouldn't be surprised if the AWS LB setup (or the DNS itself) is influencing things somehow. However, I previously managed with a similar (if not same) cert-manager setup to successfully get a certificate for applebanana.stag.aws.worksome.net (don't judge, just a test service and domain name).

I'll look into ACM - and will consider DNS01 challenge instead.

But the dilemma here is still open, even if I come across some workaround.

So what is different? Probably easier for you to identify than any of us. You have more insight to your (somewhat complex) config.

Often we see trouble behind Load Balancers with people doing http challenge. When the ACME client is run from, say, Server1 it results in an http challenge request from the Let's Encrypt server to the LB. If the LB sends that request to Server1 it will work. If it gets sent to Server2 (or other) then it won't unless you have done some magic to get the http challenge files distributed to each server.

I don't know what is failing in your setup. I am just describing some basic mechanics in hopes it helps you understand what happened.


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