How much website i can add in uptime-kuma #4242

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opened 2026-02-28 03:55:51 -05:00 by deekerman · 2 comments

deekerman commented

2026-02-28 03:55:51 -05:00

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Originally created by @suridtahsan on GitHub (Aug 4, 2025).

⚠️ Please verify that your question has not already been reported

I have searched the existing issues and found no similar reports.

🛡️ Security Policy

I have read and agree to Uptime Kuma's Security Policy.

📝 Describe your problem

When i add more than 300 websites it keeps restarting, i am using t4g.medium (2core|4gb)
i monitored my resources both docker stats and htop i see no significant useage

📝 Error Message(s) or Log

###Docker-Logs####
If you keep encountering errors, please report to https://github.com/louislam/uptime-kuma/issues                                                                                              
Trace: TypeError: callback is not a function                                                                                                                                                  
    at Socket.<anonymous> (/app/server/server.js:915:17)                                                                                                                                      
    at process.unexpectedErrorHandler (/app/server/server.js:1905:13)                                                                                                                         
    at process.emit (node:events:517:28)                                                                                                                                                      
    at emit (node:internal/process/promises:149:20)                                                                                                                                           
    at processPromiseRejections (node:internal/process/promises:283:27)                                                                                                                       
    at process.processTicksAndRejections (node:internal/process/task_queues:96:32)                                                                                                            
If you keep encountering errors, please report to https://github.com/louislam/uptime-kuma/issues

🐻 Uptime-Kuma Version

latest

💻 Operating System and Arch

Ubuntu 24.04

🌐 Browser

Google Chrome

🖥️ Deployment Environment

Runtime Environment:
- Docker: Version 28.3.3 (Build Y.Y.Y)
- Docker Compose: Version 2.39.1
Database:
- SQLite: Embedded
Database Storage:
- Filesystem:
  - Linux: ext4
- Storage Medium: NVMe
Uptime Kuma Setup:
- Number of monitors: 300

Originally created by @suridtahsan on GitHub (Aug 4, 2025). ### ⚠️ Please verify that your question has not already been reported - [x] I have searched the [existing issues](https://github.com/louislam/uptime-kuma/issues?q=is%3Aissue%20sort%3Acreated-desc%20) and found no similar reports. ### 🛡️ Security Policy - [x] I have read and agree to Uptime Kuma's [Security Policy](https://github.com/louislam/uptime-kuma/security/policy). ### 📝 Describe your problem When i add more than 300 websites it keeps restarting, i am using t4g.medium (2core|4gb) i monitored my resources both docker stats and htop i see no significant useage ### 📝 Error Message(s) or Log ```bash session ###Docker-Logs#### If you keep encountering errors, please report to https://github.com/louislam/uptime-kuma/issues Trace: TypeError: callback is not a function at Socket.<anonymous> (/app/server/server.js:915:17) at process.unexpectedErrorHandler (/app/server/server.js:1905:13) at process.emit (node:events:517:28) at emit (node:internal/process/promises:149:20) at processPromiseRejections (node:internal/process/promises:283:27) at process.processTicksAndRejections (node:internal/process/task_queues:96:32) If you keep encountering errors, please report to https://github.com/louislam/uptime-kuma/issues ``` ### 🐻 Uptime-Kuma Version latest ### 💻 Operating System and Arch Ubuntu 24.04 ### 🌐 Browser Google Chrome ### 🖥️ Deployment Environment - **Runtime Environment**: - Docker: Version `28.3.3` (Build `Y.Y.Y`) - Docker Compose: Version `2.39.1` - **Database**: - SQLite: Embedded - **Database Storage**: - **Filesystem**: - Linux: ext4 - **Storage Medium**: NVMe - **Uptime Kuma Setup**: - Number of monitors: `300`