Subject: Issues with Rocket.Chat Real-Time Events in Docker Swarm Cluster

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Subject: Issues with Rocket.Chat Real-Time Events in Docker Swarm Cluster

Message:

Hello Rocket.Chat Community,

We’re currently facing an issue with real-time events in our Rocket.Chat setup, and I’d appreciate any insights or advice on how to resolve it.

Environment Details:

  • Rocket.Chat Version: 4.6
  • Deployment: Docker Swarm cluster with multiple Rocket.Chat app instances and a single MongoDB instance.

Problem Description: After our Rocket.Chat cluster has been up and running for about 2-3 weeks, we start experiencing issues with the real-time event system. Here’s the specific behavior:

  1. Clients establish WebSocket connections successfully and subscribe to events like rooms-changed and subscriptions-changed.
  2. The WebSocket connection acknowledges that the subscription to these events is added.
  3. However, when a change occurs (e.g., a user sends a message in a room), other subscribed clients do not receive the real-time updates for these events.
  4. As a result, clients are connected, and subscriptions are active, but no updates (like new messages) are received in real-time.

Temporary Solution: Restarting the Rocket.Chat app instances in the Docker Swarm cluster seems to temporarily resolve the issue, and the events start working again as expected.

Request for Assistance:

  1. Has anyone encountered a similar issue with Rocket.Chat events in a Docker Swarm setup?
  2. Are there any known configurations, timeouts, or settings that could cause WebSocket events to stop working over time?
  3. What would you recommend as a solution to ensure real-time events work consistently without requiring periodic restarts?

Thank you for your help!

2

EOL Oct 2022

Upgrade. We can’t help you otherwise.

https://docs.rocket.chat/docs/version-durability

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