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Can't connect via NodeJS - Error: self signed certificate in certificate chain

Posted December 9, 2019 8.7k views
DigitalOcean Managed MySQL Database

Here is my connection code : 

        this.connection = mysql.createConnection({
            host: 'xxxx.db.ondigitalocean.com',
            user: 'doadmin',
            port: 25060,
            password: 'xxxx',
            dialect: 'mysql',
            force: true,
            ssl: {
                cert: fs.readFileSync(__dirname + '/ca-certificate.crt'),
            }

        });

Here is the error im getting

(node:5676) UnhandledPromiseRejectionWarning: Error: self signed certificate in certificate chain
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nickynick
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nickynick

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3 answers
patrickmalcolm June 11, 2020 
ssl: {
                ca: fs.readFileSync(__dirname + '/ca-certificate.crt'),
            }

Change cert attribute to ca
You can even add rejectUnauthorized: true

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KFSys December 10, 2019

Hi @nickynick,

Usually when experiencing this issue is when you are using a SELF SIGNED certificate, is that correct?

If that’s the case, add NODE_TLS_REJECT_UNAUTHORIZED='0' as an environment variable wherever you are running node or running node directly with NODE_TLS_REJECT_UNAUTHORIZED='0'node app.js

This instructs Node to allow untrusted certificates (untrusted = not verified by a certificate authority)

I would not recommend setting this environment variable in production as your application would not be trusted by users. You can use free Let’s Encrypt certificates.

Regards,
KDSys

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Architecd January 4, 2020

I’m experiencing the exact same issue.
The certificate provided by DO doesn’t make a connection possible from my local computer to the managed DB. I’d really appreciate some input on how to use it within a node.js application and one of the available mysql drivers.

So far I couldn’t find any solutions online, which unfortunately prevents me from actually using DO :/

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