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Ubuntu 24.04 Server Quick Start: Sudo User, SSH Hardening, fail2ban, Docker and Dockge
Every time I spin up a new Ubuntu server I go through the same handful of steps before anything else touches it. This post is that checklist, written down so I (and hopefully you) don’t have to piece it together again. It assumes a fresh Ubuntu 24.04 LTS install where your SSH public key is already in place for the initial login.
Throughout the post I use youruser as the new account name and 2222 as the new SSH port. Replace both with your own values.
Golden rule: keep your current SSH session open the whole time and test every change from a second terminal. That way a typo never locks you out.
Speedtest Track / docker compose fix
LXC container mit Komodo ausgerollt (Proxmox Helper Scripts)
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bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/ct/komodo.sh)" |
Anschließend den Stack eingerichtet und folgende compose kopiert:
Comparison of PMMA vs. Nylon filaments
Comparison of PMMA vs. Nylon (PA-12, PA-6, PA-66, and Blends) for 3D Printing
PMMA (Polymethyl Methacrylate) and Nylon filaments each have unique properties that make them suitable for different applications. This comparison highlights key differences in mechanical strength, heat resistance, chemical resistance, and ease of printing.
1. Mechanical Properties
| Property | PMMA | Nylon PA-12 | Nylon PA-6 | Nylon PA-66 | Nylon Blends (PA-CF/PA-GF) |
|---|---|---|---|---|---|
| Strength | High | Moderate | High | Very High | Very High |
| Toughness | Brittle (low impact strength) | High (impact-resistant) | Moderate | Low | Moderate to Low |
| Flexibility | Rigid | High | Moderate | Low | Low |
| Abrasion Resistance | Moderate | High | Very High | Very High | Extremely High |
2. Heat Resistance
| Property | PMMA | Nylon PA-12 | Nylon PA-6 | Nylon PA-66 | Nylon Blends |
|---|---|---|---|---|---|
| Heat Deflection Temp (HDT) | ~80–100°C | ~100°C | ~120°C | ~150°C | ~150°C or higher |
3. Chemical Resistance
| Property | PMMA | Nylon PA-12 | Nylon PA-6 | Nylon PA-66 | Nylon Blends (PA-CF/PA-GF) |
|---|---|---|---|---|---|
| Chemical Resistance | Poor (sensitive to solvents, acids) | Moderate | Moderate to High | High | High |
4. Water Absorption and Dimensional Stability
| Property | PMMA | Nylon PA-12 | Nylon PA-6 | Nylon PA-66 | Nylon Blends (PA-CF/PA-GF) |
|---|---|---|---|---|---|
| Water Absorption | Very Low | Low | High | Very High | Low to Moderate |
| Dimensional Stability | Excellent | Good | Poor (affected by humidity) | Poor (affected by humidity) | Good |
5. Transparency and Aesthetic Properties
| Property | PMMA | Nylon PA-12 | Nylon PA-6 | Nylon PA-66 | Nylon Blends (PA-CF/PA-GF) |
|---|---|---|---|---|---|
| Transparency | Fully Transparent | Opaque | Opaque | Opaque | Opaque |
| Surface Finish | Glossy and smooth | Matte or semi-matte | Matte | Matte | Matte |
6. Ease of Printing
| Property | PMMA | Nylon PA-12 | Nylon PA-6 | Nylon PA-66 | Nylon Blends (PA-CF/PA-GF) |
|---|---|---|---|---|---|
| Ease of Printing | Difficult (warping, adhesion issues) | Easier | Difficult | Very Difficult | Moderate |
| Print Temp. (°C) | ~240–260°C | ~240–260°C | ~250–270°C | ~260–280°C | ~250–280°C |
7. Applications
| Material | Typical Applications |
|---|---|
| PMMA | Optical lenses, light covers, display cases, decorative parts |
| Nylon PA-12 | Gears, hinges, medical devices, flexible functional parts |
| Nylon PA-6 | Automotive parts, industrial components, durable mechanical parts |
| Nylon PA-66 | Engine components, high-stress industrial parts, high-temperature applications |
| Nylon Blends | Lightweight structural parts, drones, high-performance gears, aerospace components |
Conclusion
PMMA is best for clarity and aesthetic applications, while Nylons are more suited for high-strength, high-temperature, and wear-resistant applications. Nylon PA-66 and PA-CF/PA-GF blends are ideal for industrial and mechanical parts, whereas PA-12 offers better flexibility and moisture resistance.
Rome / Milan CPUs
| Processor Model | Codename | Cores/Threads | Base Frequency | Max Boost Frequency | TDP (W) | L3 Cache (MB) | Approximate Used Price (USD) |
|---|
| EPYC 7F32 | Rome | 8/16 | 3.7 GHz | 3.9 GHz | 180 | 128 | $198 |
| EPYC 7F52 | Rome | 16/32 | 3.5 GHz | 3.9 GHz | 240 | 256 | $315 |
| EPYC 7F72 | Rome | 24/48 | 3.2 GHz | 3.7 GHz | 240 | 192 | $469 |
| EPYC 7302P | Rome | 16/32 | 3.0 GHz | 3.3 GHz | 155 | 128 | $149 |
| EPYC 7402P | Rome | 24/48 | 2.8 GHz | 3.35 GHz | 180 | 128 | $192 |
| EPYC 7502P | Rome | 32/64 | 2.5 GHz | 3.35 GHz | 180 | 128 | $210 |
| EPYC 7702P | Rome | 64/128 | 2.0 GHz | 3.35 GHz | 200 | 256 | $695 |
| EPYC 7742 | Rome | 64/128 | 2.25 GHz | 3.4 GHz | 225 | 256 | $749 |
| EPYC 7313P | Milan | 16/32 | 3.0 GHz | 3.7 GHz | 155 | 128 | $850 |
| EPYC 7443P | Milan | 24/48 | 2.85 GHz | 4.0 GHz | 200 | 128 | $1,337 |
| EPYC 7502P | Milan | 32/64 | 2.5 GHz | 3.35 GHz | 180 | 128 | $1,575 |
| EPYC 7702P | Milan | 64/128 | 2.0 GHz | 3.35 GHz | 200 | 256 | $1,995 |
| EPYC 7763 | Milan | 64/128 | 2.45 GHz | 3.5 GHz | 280 | 256 | $7,890 |
| EPYC 73F3 | Milan | 16/32 | 3.5 GHz | 4.0 GHz | 240 | 256 | $1,688.88 |
| EPYC 74F3 | Milan | 24/48 | 3.2 GHz | 4.0 GHz | 240 | 256 | $2,268 |
| EPYC 7C13 | Milan | 64/128 | 2.0 GHz | — | 240 | 256 | $818.80 |
Jellyfin – GPU Passthrough in LXC
Bei Jellyfin waren weitere Parameter nötig
Installation wie üblich:
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https://community-scripts.github.io/ProxmoxVE/scripts?id=jellyfin |
Im Container den User jellyfin der Gruppe der Shares zuweisen
Linux monitoring in a terminal
https://youtu.be/4isEhE2rvmA?si=yR8BRSAjJvc56H4S
- top: https://linux.die.net/man/1/top
- s-tui: https://amanusk.github.io/s-tui/
- htop: https://htop.dev
- atop: https://linux.die.net/man/1/atop
- iftop: https://linux.die.net/man/8/iftop
- iotop: https://github.com/Tomas-M/iotop
- nvtop: https://github.com/Syllo/nvtop
- asitop: https://github.com/tlkh/asitop
- btop: https://github.com/aristocratos/btop
- perf: https://www.brendangregg.com/perf.html
- wavemon: https://github.com/uoaerg/wavemon
Proxmox – GPU Passthrough / Plex LXC
Gute Anleitung hier, jedoch funktionierte es noch nicht.
Fehler gab es bei den Zahlen in der cgroup2 config.
Aktuelle Version (06.01.2025) – https://download.nvidia.com/XFree86/Linux-x86_64/550.142/
Weitere URL für das Archiv – https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa
URL des Proxmox Helper Scripts – https://community-scripts.github.io/ProxmoxVE/scripts?id=plex