Load balancer HTTPS health check monitor not working with the “star” *.example.com TLS certificate. It reports that the certificate is invalid.
I don’t think you can set a wildcard subdomain as health check target. It should be specific (e.g. www.example.com)
That is a bit disappointing as just for the monitor I would have to set up another TLS certificate. I think this should be considered as a bug.
I would like to see your health check configuration, so we might be able to pinpoint some problems in the configuration.
If your server does not have SSL certificate, then just choose HTTP as the protocol.
Sorry, I think I misunderstood your question.
One question: what SSL certificate you are using in your server? Self-signed? Or valid certificate that you purchased somewhere?
Another question: what is your SSL encryption mode? Flexible? Full?
This HC endpoint: https://v2.convertapi.com/health/check
We are doing only DNS load balancing.
Ok, can you check whether the certificate chain (intermediate certificate) is already installed in your server too?
If I’m not mistaken, if your server does not configure certificate chain properly, Cloudflare will not accept SSL/TLS testing even you already installed the domain SSL certificate.
Get Sectigo RSA Domain Validation Secure Server CA [ Intermediate ] and install it in your server.
Follow this instruction on how to configure in your Nginx web server:
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