MongoServerError: Transaction numbers are only allowed on a replica set member or mongos about overleaf

[mserranom]

MongoDB needs to run as a Replica Set since 4.0.1.

Check the release notes for any extra information: https://github.com/overleaf/overleaf/wiki/Release-Notes--4.x.x#server-pro-401

[hzxie]

@mserranom Thanks for your reply. After adding command: "--replSet overleaf", I got another error.

Cannot connect to mongodb
MongooseServerSelectionError: Server selection timed out after 60000 ms
    at Connection.openUri (/overleaf/node_modules/mongoose/lib/connection.js:825:32)
    at /overleaf/node_modules/mongoose/lib/index.js:414:10
    at /overleaf/node_modules/mongoose/lib/helpers/promiseOrCallback.js:41:5
    at new Promise (<anonymous>)
    at promiseOrCallback (/overleaf/node_modules/mongoose/lib/helpers/promiseOrCallback.js:40:10)
    at Mongoose._promiseOrCallback (/overleaf/node_modules/mongoose/lib/index.js:1288:10)
    at Mongoose.connect (/overleaf/node_modules/mongoose/lib/index.js:413:20)
    at Object.<anonymous> (/overleaf/services/web/app/src/infrastructure/Mongoose.js:19:36)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10) {
  reason: TopologyDescription {
    type: 'Unknown',
    servers: Map(1) { 'mongo:27017' => [ServerDescription] },
    stale: false,
    compatible: true,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    setName: null,
    maxElectionId: null,
    maxSetVersion: null,
    commonWireVersion: 0,
    logicalSessionTimeoutMinutes: null
  },
  code: undefined
}
*** /etc/my_init.d/500_check_db_access.sh failed with status 1