Mongo Connection Error when Upgrading 4.8.2 to 5.0.3 - Community Support

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Description

Please assist with my Docker Rocket Chat Upgrade from V4.8.2 to V5.0.3

Rocket Chat is working 100% in Docker with MongoDB 4.4.14 and RocketChat v4.8.2.

When changing the docker-compose.yml file to use image: registry.rocket.chat/rocketchat/rocket.chat:5.0.3 , I get error’s connecting to the MongoDB.

The MONGO_URL is defined as environment in the docker-compose.yml file as MONGO_URL=mongodb://mongo:27017/rocketchat and is working with RocketChat 4.8.2.

Even with this environment set, it seems RocketChat is still looking for MongoDB at 127.0.0.1 when is is not there.

Docker Compose file and RockerChat Error Log added below under Additional Information

Server Setup Information

Version of Rocket.Chat Server: 4.8.2

Operating System: CentOS Linux 7 (Core)

Deployment Method: docker

Number of Running Instances: 1

DB Replicaset Oplog:

NodeJS Version: 14.18.3 - x64

MongoDB Version: 4.4.14 wiredTiger

Proxy: nginx

Firewalls involved: n/a

Any additional Information docker-compose.yml

 version: '2'
services:
  rocketchat:
    image: registry.rocket.chat/rocketchat/rocket.chat:4.8.2
    command: >
      bash -c
        "for i in `seq 1 30`; do
          node main.js &&
          s=$$? && break || s=$$?;
          echo \"Tried $$i times. Waiting 5 secs...\";
          sleep 5;
        done; (exit $$s)"
    restart: unless-stopped
    volumes:
      - ./uploads:/app/uploads
    environment:
      - PORT=3000
      - ROOT_URL=https://chat.dev.jennyme.co.za
      - MONGO_URL=mongodb://mongo:27017/rocketchat
      - MONGO_OPLOG_URL=mongodb://mongo:27017/local
      - REG_TOKEN=${REG_TOKEN}
      - CREATE_TOKENS_FOR_USERS=true
    depends_on:
      - mongo
    ports:
      - 3000:3000
    labels:
      - "traefik.backend=rocketchat"
      - "traefik.frontend.rule=Host: your.domain.tld"
  mongo:
    image: mongo:4.4
    restart: unless-stopped
    volumes:
     - ./data/db:/data/db
     - ./data/dump:/dump
    command: mongod --oplogSize 128 --replSet rs0 --storageEngine=wiredTiger
    labels:
      - "traefik.enable=false"
  mongo-init-replica:
    image: mongo:4.4
    command: >
      bash -c
        "for i in `seq 1 30`; do
          mongo mongo/rocketchat --eval \"
            rs.initiate({
              _id: 'rs0',
              members: [ { _id: 0, host: 'localhost:27017' } ]})\" &&
          s=$$? && break || s=$$?;
          echo \"Tried $$i times. Waiting 5 secs...\";
          sleep 5;
        done; (exit $$s)"
    depends_on:
      - mongo
  nginx:
    image: nginx
    ports:
      - 80:80
      - 443:443
    restart: unless-stopped
    volumes:
      - ./nginx/rocketchat.conf:/etc/nginx/conf.d/default.conf
      - ./nginx/cert/:/etc/nginx/ssl/
RocketChat Error Log
rocketchat_1          | /app/bundle/programs/server/node_modules/fibers/future.js:313
rocketchat_1          | 						throw(ex);
rocketchat_1          | 						^
rocketchat_1          | 
rocketchat_1          | MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
rocketchat_1          |     at Timeout._onTimeout (/app/bundle/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb/lib/sdam/topology.js:312:38)
rocketchat_1          |     at listOnTimeout (internal/timers.js:557:17)
rocketchat_1          |     at processTimers (internal/timers.js:500:7) {
rocketchat_1          |   reason: TopologyDescription {
rocketchat_1          |     type: 'ReplicaSetNoPrimary',
rocketchat_1          |     servers: Map(1) {
rocketchat_1          |       'localhost:27017' => ServerDescription {
rocketchat_1          |         _hostAddress: HostAddress { isIPv6: false, host: 'localhost', port: 27017 },
rocketchat_1          |         address: 'localhost:27017',
rocketchat_1          |         type: 'Unknown',
rocketchat_1          |         hosts: [],
rocketchat_1          |         passives: [],
rocketchat_1          |         arbiters: [],
rocketchat_1          |         tags: {},
rocketchat_1          |         minWireVersion: 0,
rocketchat_1          |         maxWireVersion: 0,
rocketchat_1          |         roundTripTime: -1,
rocketchat_1          |         lastUpdateTime: 4257002544,
rocketchat_1          |         lastWriteDate: 0,
rocketchat_1          |         error: MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017
rocketchat_1          |             at connectionFailureError (/app/bundle/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb/lib/cmap/connect.js:381:20)
rocketchat_1          |             at Socket.<anonymous> (/app/bundle/programs/server/npm/node_modules/meteor/npm-mongo/node_modules/mongodb/lib/cmap/connect.js:301:22)
rocketchat_1          |             at Object.onceWrapper (events.js:520:26)
rocketchat_1          |             at Socket.emit (events.js:400:28)
rocketchat_1          |             at emitErrorNT (internal/streams/destroy.js:106:8)
rocketchat_1          |             at emitErrorCloseNT (internal/streams/destroy.js:74:3)
rocketchat_1          |             at processTicksAndRejections (internal/process/task_queues.js:82:21)
rocketchat_1          |       }
rocketchat_1          |     },
rocketchat_1          |     stale: false,
rocketchat_1          |     compatible: true,
rocketchat_1          |     heartbeatFrequencyMS: 10000,
rocketchat_1          |     localThresholdMS: 15,
rocketchat_1          |     setName: 'rs0',
rocketchat_1          |     maxSetVersion: 1,
rocketchat_1          |     maxElectionId: ObjectId {
rocketchat_1          |       [Symbol(id)]: Buffer(12) [Uint8Array] [
rocketchat_1          |         127, 255, 255, 255, 0,
rocketchat_1          |           0,   0,   0,   0, 0,
rocketchat_1          |           0,  16
rocketchat_1          |       ]
rocketchat_1          |     },
rocketchat_1          |     commonWireVersion: 9,
rocketchat_1          |     logicalSessionTimeoutMinutes: undefined
rocketchat_1          |   }
rocketchat_1          | }
              Found the Solution.
Added directConnection=true to MONGO_URL and MONGO_OPLOG_URL environment variables. i.e.:
      - MONGO_URL=mongodb://mongo:27017/rocketchat?replicaSet=rs0&directConnection=true
      - MONGO_OPLOG_URL=mongodb://mongo:27017/local?replicaSet=rs0&directConnection=true
Refference: Release 5.0.0 · RocketChat/Rocket.Chat · GitHub