AdGuard Home and Syncthing running together on a RPI2 model B?

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Hello and Happy New Year

Here it is: I have AdGuard Home running on my RPI and I wonder if it would also be able to host the Syncthing application to synchronize remote directories on my network. And if so, wouldn’t there be a conflict to access the management interface: the 2 services having the same IP? Sorry if I ask a stupid question, but I am a newbie who is starting his journey in the Linux universe.

Tech infos: It’s an Raspberry Pi 2 Model B Rev 1.1 (ARMv7) which runs smoothly AdGuard Home:

free -h
               total        used        free      shared  buff/cache   available
Mem:           921Mi       193Mi       510Mi       0.0Ki       217Mi       674Mi
Swap:           99Mi          0B        99Mi

EDIT: oops! forgot to tell the whole thing is on 16Gb SDcard

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Will you have conflicts between AdGuard Home and Syncthing? I don’t know enough about AdGuard Home to have an opinion. Syncthing’s management UI documentation is at The GUI Listen Address — Syncthing documentation — Syncthing uses port udp/8384 by default. Syncthing also uses (tcp & udp)/22000 and udp/21027 (Firewall Setup — Syncthing documentation). It looks like AdGuard Home does not use those ports (Getting Started · AdguardTeam/AdGuardHome Wiki · GitHub).

Will you have performance issues running both? I can’t say. You might. The RPi is not designed for high performance.

Make a backup of your data. Make a backup of your RPi. And if you give it a try, we can try to help if you run into issues.

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Welcome to the forum, and also to exploring the Linux universe. :grinning:

AdGuard Home has very low system resource demands, so running Syncthing alongside it won’t be an issue.

Although a revision 1.1 RPi 2 B with some system performance tuning can run Syncthing, how well it works overall will depend a lot on the number and typical size of the files being synced due to the 32-bit CPU and 1GB of RAM.

There are quite a few earlier posts on this forum about using a RPi with Syncthing so I’ll leave the details to those threads, but just a few quick pointers:

  • Use Linux’s zram module to make more efficient use of available RAM. The benefits often outweigh the CPU cycles required for the compression.
  • A quick rule of thumb regarding Linux’s inotify subsystem that’s used by Syncthing for real-time detection of file changes is that every file watched requires 1KB of RAM – i.e. 1 million files = 1GB of RAM.
  • If the files to be synced and Syncthing’s database will be stored on the 16GB SD card, keep an eye out for faster wear and tear. One solution is to get a larger capacity card relative to your storage requirements to spread out the write cycles over more flash memory blocks.
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Hello to both of you and many thanks for your comments and advice. Well, maybe it had been years since my RPI2 b was running nicely in its corner without flinching. After reading you I gave it a bath of youth (updating the OS and installing ZRam). It is now ready to welcome its new playmate. I will introduce it to him very quickly. Stay tuned.