I am doing a PoC of PBS to backup files from a server.
I have setup PBS 4.1.0 and from that end seems fine, but I installed a client on Ubuntu 22.04, I have tried these two:
- http://download.proxmox.com/debian/...oxmox-backup-client-static_4.0.16-1_amd64.deb (4.0.1)
- https://cloud-pbs.com/wp-content/uploads/2025/06/proxmox-backup-client (3.4.1)
And I get the same error every time, I am able to backup, but I cannot see the catalog or restore. Getting:
This is how I backup:
The error about $XDG_RUNTIME_DIR throws me off, but it seems it is normal.
And this where I can see the snapshot is there, but I cannot do anything else.
I could not find the static binary of the PBS client 4.1, could that be the issue or am I missing something?
I have setup PBS 4.1.0 and from that end seems fine, but I installed a client on Ubuntu 22.04, I have tried these two:
- http://download.proxmox.com/debian/...oxmox-backup-client-static_4.0.16-1_amd64.deb (4.0.1)
- https://cloud-pbs.com/wp-content/uploads/2025/06/proxmox-backup-client (3.4.1)
And I get the same error every time, I am able to backup, but I cannot see the catalog or restore. Getting:
Code:
storing login ticket failed: $XDG_RUNTIME_DIR must be set
Error: Is a directory (os error 21)This is how I backup:
Code:
# export PBS_REPOSITORY=10.201.3.126:vxnl01a
# export PBS_PASSWORD=XXXX <I have also tried with a file and being prompted for the password>
# proxmox-backup-client version
storing login ticket failed: $XDG_RUNTIME_DIR must be set
client version: 4.0.16
server version: 4.1.0
# proxmox-backup-client backup etc.pxar:/etc
Starting backup: host/THUNDER/2026-01-01T11:10:33Z
Client name: THUNDER
Starting backup protocol: Thu Jan 1 12:10:33 2026
storing login ticket failed: $XDG_RUNTIME_DIR must be set
Downloading previous manifest (Thu Jan 1 12:10:21 2026)
Upload directory '/etc' to '10.201.3.126:vxnl01a' as etc.pxar.didx
Error downloading .didx from previous manifest: Is a directory (os error 21)
etc.pxar: had to backup 2.644 MiB of 2.644 MiB (compressed 646.203 KiB) in 0.59 s (average 4.461 MiB/s)
Uploaded backup catalog (39.392 KiB)
Duration: 1.26s
End Time: Thu Jan 1 12:10:34 2026The error about $XDG_RUNTIME_DIR throws me off, but it seems it is normal.
And this where I can see the snapshot is there, but I cannot do anything else.
Code:
# proxmox-backup-client snapshot list
storing login ticket failed: $XDG_RUNTIME_DIR must be set
┌───────────────────────────────────┬───────────┬────────────────────────────────────────────────────────────────┐
│ snapshot │ size │ files │
╞═══════════════════════════════════╪═══════════╪════════════════════════════════════════════════════════════════╡
│ host/THUNDER/2025-12-31T15:43:33Z │ 2.683 MiB │ catalog.pcat1 etc.pxar index.json │
├───────────────────────────────────┼───────────┼────────────────────────────────────────────────────────────────┤
│ host/THUNDER/2025-12-31T16:18:02Z │ 2.683 MiB │ catalog.pcat1 etc.pxar index.json │
├───────────────────────────────────┼───────────┼────────────────────────────────────────────────────────────────┤
│ host/THUNDER/2026-01-01T11:10:21Z │ 2.683 MiB │ catalog.pcat1 etc.pxar index.json │
├───────────────────────────────────┼───────────┼────────────────────────────────────────────────────────────────┤
│ host/THUNDER/2026-01-01T11:10:33Z │ 2.683 MiB │ catalog.pcat1 etc.pxar index.json │
├───────────────────────────────────┼───────────┼────────────────────────────────────────────────────────────────┤
# proxmox-backup-client catalog dump host/THUNDER/2026-01-01T11:10:33Z
storing login ticket failed: $XDG_RUNTIME_DIR must be set
Error: Is a directory (os error 21)
# proxmox-backup-client catalog shell host/THUNDER/2026-01-01T11:10:33Z etc.pxar
storing login ticket failed: $XDG_RUNTIME_DIR must be set
Error: Is a directory (os error 21)
# proxmox-backup-client restore host/THUNDER/2025-12-31T16:18:02Z etc.pxar /tmp/test
storing login ticket failed: $XDG_RUNTIME_DIR must be set
Error: Is a directory (os error 21)I could not find the static binary of the PBS client 4.1, could that be the issue or am I missing something?