Uptime Kuma has no published numeric minimum for CPU cores, RAM, or disk capacity. The official installation documentation specifies a supported Linux or Windows host, the required runtime (Docker or the non-Docker stack), and persistent storage for /app/data. A 1 GB RAM figure published by UptimeKuma.co in 2025 is a non-official starting heuristic, not a vendor guarantee.
Antihost offers Linux VPS plans with full root access, unlimited traffic on a 1 Gbps port and a 14-day free trial.
For a VPS, storage behavior is at least as important as raw capacity: Uptime Kuma stores its SQLite database in /app/data, which must be on storage supporting POSIX file locking. The official wiki warns that missing lock support can corrupt SQLite and specifically cautions against NFS. Choose CPU, memory, and disk according to monitor count, polling interval, history retention, and notification activity rather than an invented monitor limit.
As an Amazon Associate I earn from qualifying purchases.
What the official requirements actually say
The official Uptime Kuma installation material describes platforms and software prerequisites, but it does not publish a minimum CPU frequency, core count, RAM quantity, or disk-size number. That distinction matters when comparing inexpensive VPS plans: a provider cannot be checked against an official “two cores and 2 GB” baseline because no such baseline is documented.
The documented baseline is operational:
- A supported Linux distribution or supported Windows installation.
- Either the Docker deployment or the non-Docker runtime.
- Persistent local storage mounted at
/app/data. - Filesystem support for POSIX file locks so SQLite can coordinate database access safely.
The official wiki states, “Filesystem support for POSIX file locks is required to avoid SQLite database corruption.” It also cautions against NFS-backed data directories. This is a functional requirement, not an optimization: a VPS with ample CPU and RAM can still lose data if its mounted storage does not provide reliable locking.
#1 Best Overall
- [Ultra-Lightweight Ear Buds Designed for Small Ears] Each earbud weighs only 3.7g and features a compact, ergonomic in-ear design made especially for small ears. Secure, low-profile, and comfortable for workouts, all-day wear or overnight sleeping.The ultra-slim profile sits flush in your ear with no hard edges poking or rubbing, so you can even sleep on your side without discomfort.
- [Immersive Stereo Sound with TOZO OrigX Technology] TOZO OrigX tuning delivers clear vocals, balanced mids, and natural stereo sound for music, podcasts, and videos.
- [Long Battery Life for Daily Use] Get up to 7 hours of playtime on a single charge, with up to 32 hours total using the charging case—ideal for workdays, commuting, and extended listening sessions.
- [Bluetooth 5.3 & Stable Connection] Bluetooth 5.3 provides fast pairing, stable wireless performance, and reduced dropouts as you move around home or office.
- [Deep Bass with Clear Vocals] High-performance drivers produce punchy bass while keeping vocals clean and detailed for everyday listening.
How much RAM does Uptime Kuma need?
The only published number is non-official
UptimeKuma.co’s 2025 guide labels 1 GB of RAM as “Minimum RAM” and immediately notes that requirements vary with the number of monitoring probes. That page is a third-party sizing suggestion, not an official Uptime Kuma requirement. Treat 1 GB as a sensible starting point for a small, lightly loaded installation, not as a promise that every configuration will fit.
What increases memory pressure
Memory demand changes with the work the instance performs. More monitors create more scheduled jobs and more state to keep available. Shorter polling intervals cause those jobs to overlap more often, while long history retention makes the SQLite database larger and can increase maintenance work. Notification activity, especially during an outage or recovery storm, adds additional processing and network requests. Running Uptime Kuma alongside a web server, control panel, database, metrics stack, or container runtime on the same VPS also reduces the memory available to it.
Recommended Free Tools
A 1 GB VPS can therefore be practical for a modest personal or small-site setup when the operating system has headroom and no memory-heavy neighbors. It becomes a risky choice when you expect many checks, very frequent intervals, extensive retention, or several other services. Because no official monitor-count benchmark exists, do not advertise a guaranteed number of monitors for any RAM size.
How many CPU cores does Uptime Kuma need?
No official CPU floor is published
Uptime Kuma’s official requirements do not specify a minimum core count, clock speed, or CPU model. Monitoring is usually a collection of scheduled network requests, database writes, and notification tasks rather than a continuously CPU-bound workload, but the actual load depends on how those tasks are configured and on what else shares the VPS.
Rank #2
- 【IP68 Waterproof Multifunctinal Smart Watch】Torjalph fitness activity tracker smart watch is IP68 waterproof technology ,you can wear it when swimming,handwashing,it's rain-proof which means that you perform multiple exercise modes outside without worrying about sweat or rain corroding your fitness smart watch,and this watch equipped with a 230 mAh large capacity battery magnetic charging ,and this sports activity tracker watch can be used 5-7 days If fully charged.
- 【Larger 1.83'' Full Screen Watch & Multi-dial Selection】1.83 inch full HD color touch screen smart watch for men / women provides excellent 240*284 resolution image quality ,This Bluetooth smart watch offers a better touch experience and remarkable immersion and ,more than 200 watch faces for you to choose from App"Da Fit ", you can change the dial style according to your mood to wear keeping the world on your wrist
- 【Accurate Activity Tracker Smart Watch 】sports watch activity tracker uses sweat and dust resistant breathable silicone strap, our Fitness Tracker Smart Watch for Android iOS Phones supports 12 sports modes,walking,running,bicycle,swimming,badminton,basketball,football,rope skipping. This bluetooth calls smart watch for men women is lightweight and stylish, bringing more convenient and relaxing sports experience while also providing more protection.
- 【Your 24 Hour Personal Daily Health Monitor】Fitness watch for women men full touch screen IP67 waterproof bluetooth smartwatch for Android iOS Phones with heart rate blood pressure monitor multifunction Andriod smart watch with steps counter sleep monitor sports fitness watch, monitoring blood oxygen saturation allows you to understand your physical condition in real time to track fitness progress ,to know your health status in time.
- 【More Functions Bluetooth Call Smart Watch】This fitness activity smart watch full screen for iPhone and Android phones includes a bunch of new features including:The bluetooth smart watch can hang up the phone, receive and display WhatsAPP /Text /Facebook /Twitter /Messenger reminder.Support sedentary reminder, alarm clock, stopwatch, timer,weather information,music control, remote camera control compatible with Android 5.0 and above or iOS 9.0 and above smartphones.
CPU factors to compare on a VPS
- Single-core performance: SQLite maintenance and parts of the Node.js process can benefit more from responsive individual cores than from a large virtual-core count.
- Burst policy: A plan that advertises burstable CPU may be fine at idle but slow during simultaneous checks, alert delivery, or database cleanup if the host enforces a low sustained limit.
- Contention: “Shared” virtual CPUs can vary with neighboring workloads. Consistent latency is often more useful than a headline core number for an availability monitor.
- Background services: Backups, log rotation, container image updates, and other applications can compete with scheduled probes.
For that reason, select a small Linux VPS with predictable CPU scheduling rather than chasing an arbitrary core minimum. If checks begin missing their schedule while memory remains available, inspect host CPU steal time and the VPS provider’s throttling policy before simply adding monitors.
How much disk space does Uptime Kuma use?
Capacity is not stated; persistence is
No official disk-capacity minimum is published. The important requirement is a persistent data location mounted at /app/data. Uptime Kuma’s SQLite database, configuration, monitor state, and related files live there, so an ephemeral container filesystem or a volume that disappears on restart is unsuitable.
Disk consumption depends on retention settings, monitor history, incident frequency, notification records, logs, and the rest of the operating system. A clean installation may occupy little space, but an instance that retains detailed history for many monitors can grow steadily. Leave free capacity for database maintenance, package updates, and temporary files instead of allocating exactly the initial footprint.
Local SSD versus network storage
Local SSD or provider block storage with documented POSIX semantics is generally the safer choice for the data directory. Network filesystems can introduce latency, stale locks, or unsupported locking behavior. The official documentation’s NFS warning is specifically about protecting SQLite from corruption; it is not merely a performance recommendation. If a provider maps VPS storage through NFS, ask whether POSIX file locking is fully supported before placing /app/data there.
Rank #3
- [Low Noise High Fidelity] New bee guitar cord with 22AWG oxygen-free-copper center conductors provides enhanced signal transfer, the PVC insulation material and the high-density stranded copper double shield provide noise rejection for quiet operation
- [Ideal for Choice] New bee 1/4 straight and right angle metal connectors, ensures a secure connection in any instrument, pedal, or amp jack. L shape great fro on stage guitar stands
- [Wide Compatible] Suitable for mixer, power amplifier, microphone, effector, decoder, equalizer, electoronic organ, electric guitar, electric bass and other electronic equipments. Widely used in the installation of smart home, karaoke speaker, professional stage audio, etc
- [Easy Disassemble] Making incidental repairs quick and easy! Very nice, flexible cable
- [Dont Hesite to Order] 24 hours customer services and professional technology team are standing by
Planning resources around workload
The following framework separates documented facts from planning decisions. It does not assign a guaranteed monitor count because Uptime Kuma publishes no such benchmark.
| Workload characteristic | Resource effect | VPS planning response |
|---|---|---|
| Few monitors, moderate polling intervals, short history | Lower scheduling, database, and notification activity | A small Linux VPS can be a reasonable starting point; 1 GB RAM is a third-party heuristic only. |
| More monitors or shorter intervals | More concurrent network requests, jobs, and SQLite writes | Prefer additional memory headroom and predictable CPU; monitor load after enabling the checks. |
| Long retention or frequent incidents | Faster database and disk growth; more maintenance I/O | Use persistent SSD storage with spare capacity and a backup plan. |
| Heavy notification activity | More outbound requests and event processing during outages | Check CPU, memory, and network behavior during an alert storm, not only when everything is up. |
| Uptime Kuma sharing a VPS with other applications | Less predictable CPU, RAM, and disk availability | Reserve headroom or isolate monitoring on its own small instance. |
Measure the running service rather than relying on a static promise. Watch memory utilization, swap activity, CPU steal time, disk latency, filesystem fullness, and whether scheduled checks execute on time. A VPS that is comfortable at normal load but swaps during an outage is undersized for its actual purpose.
Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minutePC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Can Uptime Kuma run on a 1 GB VPS?
Yes, it can be a reasonable starting configuration for a lightly loaded deployment, but “1 GB” is not an official requirement and does not define a safe monitor limit. Keep the operating system and any companion services in the calculation. A minimal Linux image with Uptime Kuma alone has a better chance of maintaining headroom than a 1 GB machine running a control panel, reverse proxy, database, and several containers.
After installation, create the monitors you actually need and observe peak behavior. If the host starts swapping, the process is repeatedly killed by the operating system, notifications lag, or checks miss their scheduled times, move to a larger plan or reduce workload. Reducing retention and avoiding unnecessarily short intervals can lower pressure, but those changes may reduce the history and detection cadence you need.
Rank #4
- Digital Family Calendar: BSIMB digital calendar wall touch screen puts an end to your chaotic life. Designed for busy families, the digital calendar keeps you organised and in step with your family. Assign different colours and tasks to each family member to make family scheduling easier and more intuitive.
- Easy Setup and Auto-Sync: Plug in, connect to WLAN and auto-syn your electric calendar in minutes. Digital wall calendar compatible with Google calendar, iCloud calendar, Outlook calendar, Cozi calendar and Yahoo calendar. Add events directly on the device or through the ecalendar app. Electronic calendar stays current whether you're at work or traveling—no manual updates needed.
- All-In-One Home Assistant: Smart calendar builds habits and encourage independence with personalised chores. Display daily meal plan to reduce the daily ‘What's for dinner?’ stress. To-do lists keep track of everything you want. Turning chores into valuable achievements with stars and rewards, making life easier and more enjoyable.
- Manage Anytime Anywhere: BSIMB electronic calendar for family stay connected with the powerful ecalendar app. Access and manage your digital wall calendar anytime, anywhere with free features like stars & rewards, photo screensaver, chore charts, meals plans, to-do lists etc. Electronic planner paid features like Magic Import tailor advanced tools for users with special needs.
- Stay in Touch with Loved Ones: Share photos or videos from your phone to electronic wall calendar with app, instantly update your life moment, and keep in touch with your family, especially those who are far away; you can also surprise your smart calendar digital wall by sending him a wish card; it's also great for keeping tech-illiterate elders in touch with the youngsters.
Docker deployment requirements and exact paths
What the official Docker example does
The official examples run Uptime Kuma in a container, publish host port 3001 to container port 3001, and mount a persistent volume at /app/data. The older documentation uses the image tag louislam/uptime-kuma:1; the v2 revision uses louislam/uptime-kuma:2. Match the tag to the major-version documentation you are following instead of assuming that a v1 command describes v2.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Basic Docker command
docker run -d
--restart=always
-p 3001:3001
-v uptime-kuma:/app/data
--name uptime-kuma
louislam/uptime-kuma:2This maps port 3001 and stores application data in the named volume. If you use a host directory instead, ensure the directory is persistent and supports POSIX file locking. Once the container starts, the official documentation says, “Uptime Kuma is now running on http://localhost:3001.” Replace localhost with the VPS address or your reverse-proxy hostname when connecting remotely, and restrict exposure with firewall rules or a proxy as appropriate.
Compose considerations
Docker Compose is also documented. The same two details remain non-negotiable in a Compose file: publish the intended port and persist /app/data on suitable storage. Back up the volume before changing image major versions, and verify that the container can read and write the mounted directory after every migration.
Non-Docker platform and runtime requirements
Uptime Kuma v2
The v2 non-Docker documentation lists major Linux distributions and supports Windows 10 x64 or Windows Server 2012 R2 x64 and newer. It lists Node.js >=20.4, Git, and pm2 as prerequisites. Confirm the operating system architecture and install those dependencies before launching the application.
Older v1 documentation
Older v1 instructions list Node.js 14, 16, 18, or 20.4 and npm >=9. These are version-specific instructions; do not mix a v1 runtime recipe with a v2 installation without checking the corresponding documentation. Pinning a compatible major version and recording it in your deployment notes makes upgrades and rollbacks easier.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →VPS selection checklist
- RAM: Treat 1 GB as a non-official starting heuristic only, then add headroom for the operating system and other services.
- CPU: Compare single-core performance, sustained limits, and CPU-steal behavior instead of relying only on virtual-core count.
- Storage: Use persistent local SSD or storage with confirmed POSIX file-lock support; avoid an NFS data directory.
- Capacity: Leave room for history growth, logs, updates, backups, and temporary database work.
- Backups: Check whether snapshots or backups are available and whether they can restore the directory containing
/app/data. - Operating system: Verify that the selected Linux distribution or Windows edition matches the Uptime Kuma major-version documentation.
- Networking: Ensure outbound connections for probes and notifications, inbound access for the web interface, and firewall controls for the published port.
- Reliability: Favor stable network and disk latency; an uptime monitor is impaired by the same host-level outages it is meant to report.
Troubleshooting undersized or unsuitable VPS deployments
The process is killed or the host swaps
Check memory and swap usage during normal polling and during an alert burst. Stop unrelated services, reduce unnecessary retention or polling frequency, and move to a plan with more RAM if pressure persists. Do not treat swap as a substitute for adequate memory for a monitoring service that must remain responsive during incidents.
Checks run late or time out
Inspect CPU steal time, sustained CPU limits, network latency, and the number of jobs scheduled at the same interval. Staggering checks or using a less aggressive interval can reduce bursts, but persistent delay indicates that the VPS or network path needs more capacity or better consistency.
SQLite errors or apparent database corruption
Verify that /app/data is persistent, writable by the container or process, and hosted on a filesystem with POSIX file-lock support. Move the directory off NFS or another storage layer with uncertain locking semantics, then restore from a known-good backup before deleting damaged files.
The container loses settings after a restart
Confirm that the volume or host-directory mount targets exactly /app/data. Inspect the container configuration and restart it deliberately; data stored only in the container’s writable layer can disappear when the container is replaced.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Disk usage keeps rising
Review history and retention settings, incident frequency, logs, and backup copies. Expand the persistent volume before it reaches full capacity, because a full filesystem can prevent SQLite writes and make an otherwise healthy monitor fail.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
