this code works fine when useNewUrlParser === false

const MongoClient = require('mongodb').MongoClient
const fs = require('fs')
const mongoUrl = "mongodb://cortex-mongo-0.cortex-mongo.default,cortex-mongo-1.cortex-mongo.default,cortex-mongo-2.cortex-mongo.default/AnalyticsUi?ssl=true&authMechanism=MONGODB-X509&replicaSet=rs0"

const mongoOpts = {
  "cert": "keys/mongo-client.pem",
  "key": "keys/mongo-client.pem",
  "ca": "keys/ca.crt"
}

const ROOT_PATH = process.cwd()

const options = {
  sslKey: fs.readFileSync(ROOT_PATH + '/' + mongoOpts['key']),
  sslCert: fs.readFileSync(ROOT_PATH + '/' + mongoOpts['cert']),
  sslCA: fs.readFileSync(ROOT_PATH + '/' + mongoOpts['ca']),
  useNewUrlParser: true
}

MongoClient.connect(mongoUrl, options, async (...args) => {
  const [err, client] = args
  if (err) console.error({err})
  if (client) {
   const db = client.db()
   const data = await db.collection('tasks').find({}).toArray()
   console.log('data', data)
{{  }}}
})

But it throws the error "MongoError: command find requires authentication" if useNewUrlParser == true{{}}