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Well that stinks! I was hopeful you found the Holy Grail! It seems like CMS is destined to be a pain. I haven’t found a solution anywhere. Hoping in a future Tailscale or CMS release this will just go away and work. Thanks for the follow up!But of course it did... Since I commented on it, one of the four disconnected today and I can't get it to reconnect over tailscale VPN. And while trying to reconnect the one, the other three CMS IPs "flipped" from tailscale IP to a local LAN IP. That was my fault I think, accidently used CMS from local IP instead of logging into it via tailscale IP.
Very interesting! That’s something no one has suggested before! I will definitely give it a try today! I also used the Tailscale download instead of Synology’s, and agree, it’s not crazy fast on the Hyper Backup, but like you I attribute that to internet upload speed. Doesn’t bother me too much since most of the time there’s just small ~1gb or so in changes. For me the next backup will be interesting since I copied 10’s of thousands of photos to the required Synology Photos folder for the first time. Again thanks for the follow up, I think you’re on to something. If it works, Tailscale should add it to their install instructions.Working again. I remembered a step I stumbled across back in 2019, the link is below (it's the next to last post in thread). Basically, configure your TAILSCALE IP in Control Panel, External Access, Advanced and that helps, a lot. And, always browser access your master machine running CMS via it's tailscale IP.
See if that makes a difference for you.
Note: I'm running the most recent package from tailscale (1.30.2) vs the one in Synology Package store (1.22.2), I found slightly better hyperbackup performance with 1.30.2. Still seems slower than it should be, I'm cable modem 200D/20U here and remote location is also 200D/20U. Hyperbackup to remote NAS occasionally hits 7 MB/s but mostly stays in the 3-4 MB/s range. When I seeded the remote NASs here on same LAN, hyperbackup hits 110 MB/s. So, it's working for backups, but definitely no speed demon.
Manual tailscale install instructions can be found at Access Synology NAS from anywhere (about half way down the page).
My "complete install steps" are
SSH to tailscale IP of target
sudo mkdir -p /dev/net
sudo mknod /dev/net/tun c 10 200
sudo chmod 755 /dev/net (from Synology DSM7 Cant ping External (already ran steps) · Issue #4928 · tailscale/tailscale )
sudo chmod 0666 /dev/net/tun (test it with below)
DS1821:/$ ls -ld /dev/net
drwxr-xr-x 2 root root 60 Oct 24 12:57 /dev/net ( you want drwxr-xr-x vs drwx------ )
Manually the below, and as a boot script
sudo /var/packages/Tailscale/target/bin/tailscale configure-host
sudo synosystemctl restart pkgctl-Tailscale.service
Ugh … Didn’t work. I can’t believe I can’t get this to happen.Yeah, it’s being difficult. I set the external address to Tailscale IP on the REMOTE NASs, and primary 1821+ I didn’t put external on it, but always have to use the Tailscale IP address for all syno web consoles even on local segments or CMS can get confused. Sorry, traveling this weekend and back on Tuesday so that’s all I have to share until back home
Ugh … Didn’t work. I can’t believe I can’t get this to happen.