Setting up mqtts port on verneMQ

[juliays]

I followed the instructions in README.MD to set up mqtts port. However, it does not work. For whatever reason, k8s does not seem to recognize the secret created corrected and the pod never started properly.

I was able to create a secret using "kubectl create secret --from-file=ca.crt.pem --from-file=tls.crt.pem --from-file=tls.key.pem" and follow the mount and env variable set up in README.MD to start the verneMQ server. However, I'm not able to connec to it when using mosquitto_pub to test passing in the --cafile option.

I don't know if anyone set up the TLS/ssl access correctly? Could you update the README.MD or share some thoughts in this issue comment? Thanks!

Does .pem files work? Or do I need the .crt and .key files for CA and intermediate certs? I tried with self gen certs as well as existing certs, neither worked and all exhibit the same behavior when running the two tests below. Thanks for your input.

mosquitto_pub -h <hostIP> -t test -m ‘test’ --cafile ca.crt -i testClient -d 
Client testClient sending CONNECT
Error: Protocol error

I tried using " openssl s_client -connect :8883 -key tls.key.pem -cert tls.cert.pem", got back the info below.

CONNECTED(00000003)
write:errno=54
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 0 bytes and written 287 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.3
    Cipher    : 0000
    Session-ID: 
    Session-ID-ctx: 
    Master-Key: 
    Start Time: 1670975815
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)

[ioolkos]

@juliays my ideas: try adding --insecure option to the mosquitto_pub command to see whether it's related to server hostname verification. I'd also try to enforce TLS version 1.2 to see whether there's a difference.

There could be an issue with the CA file too, like a missing intermediate certificate or wrong order. (all those files are PEM encoded, I think)

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[juliays]

I tried the two options and same "Protocol error" message.

mosquitto_pub -h <hostIP> -t test -m ‘test’ --cafile ca.cert.pem -d -i testClient --insecure --tls-version tlsv1.2  
Client testClient sending CONNECT
Error: Protocol error

Doe verneMQ support self generated certs? Does it support aes-256-cbc cipher for keys? I was looking at the cipher suite and I couldn't tell.

The ca file I used to set up the mqtts, is it required to be a chained cert? How about the cert I used in mosquitto_pub? Does it need to be a chained cert? Is there an order requirement? What order does the chain need to be in?

[juliays]

Another question is what's the right way to set up secrets representing the certs and keys? Following the instructions in Readme.md, I was not able to start vernemq broker. I used "kubectl create secret generic --from-file=ca.crt --from-file=tls.crt --from-file=tls.key" and I was able to follow the rest of the doc to set up and start verneMQ. But client wasn't able to connect. I also looked into "kubectl create secret tls --cert tls.cert --key tls.key" and created two secrets and added them to secretMounts. Neither worked. Same results. Please advise. Thanks!

[ioolkos]

Maybe this issue helps?
#332

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[juliays]

Thank you. I went over that item. It does not really apply here. We are not using acme server to generate cert. We just want to use our intermediate cert to validate client devices and expose our endpoint with TLS.

[ioolkos]

In general, the CAfile has to contain intermediate certs if those are part of the CA chaing.
You might also have to adapt the listener.ssl.my_listener.depth setting (adapt to your listener name).

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👉 Using the binary VerneMQ packages commercially (.deb/.rpm/Docker) requires a paid subscription.

[ioolkos]

Note to self: check what the chain depth default is if it's not set. It might be unnecessary friction if too low.

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👉 Using the binary VerneMQ packages commercially (.deb/.rpm/Docker) requires a paid subscription.

[ioolkos]

Note #349 (comment)

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👉 Thank you for supporting VerneMQ: https://github.com/sponsors/vernemq
👉 Using the binary VerneMQ packages commercially (.deb/.rpm/Docker) requires a paid subscription.