Cannot connect to web gui

[Panja0]

I'm trying this on my Synology DS920+
Using the docker.yaml file. Container boots but I cannot connect to the gui.
https://ip_address_in_yaml:11443

2026-07-20T11:12:52.324901258Z [unifi-os-server] No UOS_UUID present, generating...
2026-07-20T11:12:52.437657465Z [unifi-os-server] Setting UOS_UUID to xxx-638f-5f72-af26-xxx
2026-07-20T11:12:52.465510042Z [unifi-os-server] Setting APP_MODEL to UOSSERVER
2026-07-20T11:12:52.465668485Z [unifi-os-server] Setting APP_VERSION to 5.1.21
2026-07-20T11:12:52.465707964Z [unifi-os-server] Setting FIRMWARE_PLATFORM to linux-x64
2026-07-20T11:12:52.465739441Z [unifi-os-server] Setting PRODUCT_NAME to UniFi OS Server
2026-07-20T11:12:52.484042378Z [unifi-os-server] Synology hardware found, applying patches...
2026-07-20T11:12:52.487907857Z [unifi-os-server] Synology patches applied!
2026-07-20T11:12:52.488009469Z [unifi-os-server] Setting UOS_SYSTEM_IP to xx.xx.xx.xx

Any pointers to check?

[lemker]

See Troubleshooting in the Wiki.
If you still need help make sure to include:

• Your host specs including hardware, OS, CPU, RAM, and number of connected devices
• Your Docker Compose file
• The output of systemctl --type=service list-units from inside the container

[Panja0]

Synology DS920+
Intel Celeron J4125
12GB ram
DSM 7.3.2-86009 Update 4
I'm the only user connected at the moment.

services:
  unifi-os-server:
    image: ghcr.io/lemker/unifi-os-server:latest
    container_name: unifi-os-server
    cgroup: host
    cap_add:
      - NET_RAW
      - NET_ADMIN
    extra_hosts:
      host.docker.internal: host-gateway
    tmpfs:
      - /run:exec
      - /run/lock
      - /tmp:exec
      - /var/lib/journal
      - /var/opt/unifi/tmp:size=64m
    environment:
      - UOS_SYSTEM_IP=192.168.77.10 
    volumes:
      - /sys/fs/cgroup:/sys/fs/cgroup:rw
      - /volume2/docker/unifi-os/persistent:/persistent
      - /volume2/docker/unifi-os/var-log:/var/log
      - /volume2/docker/unifi-os/data:/data
      - /volume2/docker/unifi-os/srv:/srv
      - /volume2/docker/unifi-os/var-lib-unifi:/var/lib/unifi
      - /volume2/docker/unifi-os/var-lib-mongodb:/var/lib/mongodb
      - /volume2/docker/unifi-os/etc-rabbitmq-ssl:/etc/rabbitmq/ssl
    ports:
      - 11443:443
      - 8080:8080
      - 3478:3478/udp
      - 10003:10003/udp
    restart: always

  UNIT                                 LOAD   ACTIVE     SUB          JOB   DESCRIPTION
  bootup-bottom-invoke.service         loaded inactive   dead         start Invoke bootup-bottom hooks
  cron.service                         loaded active     running            Regular background program processing daemon
  dbus.service                         loaded active     running            D-Bus System Message Bus
  epmd.service                         loaded active     running            Erlang Port Mapper Daemon
  mongodb.service                      loaded active     running            An object/document-oriented database
  nginx.service                        loaded active     running            nginx - high performance web server
● postgresql-cluster@14-main.service   loaded failed     failed             PostgreSQL initial setup service
  postgresql.service                   loaded active     exited             PostgreSQL RDBMS
  rabbitmq-server.service              loaded active     running            RabbitMQ Messaging Server
  snmpd.service                        loaded active     running            Simple Network Management Protocol (SNMP) Daemon.
  systemd-journal-flush.service        loaded active     exited             Flush Journal to Persistent Storage
  systemd-journald.service             loaded active     running            Journal Service
  systemd-logind.service               loaded active     running            User Login Management
  systemd-remount-fs.service           loaded active     exited             Remount Root and Kernel File Systems
  systemd-sysusers.service             loaded active     exited             Create System Users
  systemd-tmpfiles-setup-dev.service   loaded active     exited             Create Static Device Nodes in /dev
  systemd-tmpfiles-setup.service       loaded active     exited             Create Volatile Files and Directories
  systemd-update-utmp-runlevel.service loaded inactive   dead         start Update UTMP about System Runlevel Changes
  systemd-update-utmp.service          loaded active     exited             Update UTMP about System Boot/Shutdown
  systemd-user-sessions.service        loaded active     exited             Permit User Sessions
  ubnt-dpkg-daemon.service             loaded inactive   dead         start UniFi dpkg daemon
  ubnt-dpkg-restore.service            loaded active     exited             UniFi Application Restore
  ucs-agent.service                    loaded activating auto-restart       UniFi Credential Server Agent
  uid-agent.service                    loaded activating auto-restart       UID Agent service
  ulp-go.service                       loaded activating auto-restart start ULP-GO
  unifi-core.service                   loaded inactive   dead         start UniFi Core
  unifi-credential-server.service      loaded activating auto-restart       UniFi Credential Server Service
  unifi-directory.service              loaded activating auto-restart       UniFi Directory Service
  unifi-identity-update.service        loaded activating auto-restart       UniFi Identity Update
  unifi.service                        loaded inactive   dead         start unifi
  uos-agent.service                    loaded active     running            UniFi OS Agent
  uos-discovery-client.service         loaded active     running            UniFi OS discovery client

[lemker]

Please exec into the container and run: apt install tree && tree -pufia -L 4 /data/postgresql

[Panja0]

Not working... :-(

root@ab7212c26330:/# apt install tree && tree -pufia -L 4 /data/postgresql
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following NEW packages will be installed:
  tree
0 upgraded, 1 newly installed, 0 to remove and 7 not upgraded.
Need to get 49.6 kB of archives.
After this operation, 118 kB of additional disk space will be used.
Get:1 http://deb.debian.org/debian bullseye/main amd64 tree amd64 1.8.0-1+b1 [49.6 kB]
Fetched 49.6 kB in 0s (1434 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package tree.
(Reading database ... 45620 files and directories currently installed.)
Preparing to unpack .../tree_1.8.0-1+b1_amd64.deb ...
Unpacking tree (1.8.0-1+b1) ...
Setting up tree (1.8.0-1+b1) ...
/data/postgresql
[drwx------ postgres]  /data/postgresql/14
[drwx------ postgres]  /data/postgresql/14/main
[drwxr-xr-x postgres]  /data/postgresql/14/main/conf
[drwxr-xr-x postgres]  /data/postgresql/14/main/data

  UNIT                                 LOAD   ACTIVE     SUB          JOB   DESCRIPTION
  bootup-bottom-invoke.service         loaded inactive   dead         start Invoke bootup-bottom hooks
  cron.service                         loaded active     running            Regular background program processing daemon
  dbus.service                         loaded active     running            D-Bus System Message Bus
  epmd.service                         loaded active     running            Erlang Port Mapper Daemon
● mongodb.service                      loaded failed     failed             An object/document-oriented database
  nginx.service                        loaded active     running            nginx - high performance web server
● postgresql-cluster@14-main.service   loaded failed     failed             PostgreSQL initial setup service
  postgresql.service                   loaded active     exited             PostgreSQL RDBMS
  rabbitmq-server.service              loaded activating auto-restart       RabbitMQ Messaging Server
  snmpd.service                        loaded active     running            Simple Network Management Protocol (SNMP) Daemon.
  systemd-journal-flush.service        loaded active     exited             Flush Journal to Persistent Storage
  systemd-journald.service             loaded active     running            Journal Service
  systemd-logind.service               loaded active     running            User Login Management
  systemd-remount-fs.service           loaded active     exited             Remount Root and Kernel File Systems
  systemd-sysusers.service             loaded active     exited             Create System Users
  systemd-tmpfiles-setup-dev.service   loaded active     exited             Create Static Device Nodes in /dev
  systemd-tmpfiles-setup.service       loaded active     exited             Create Volatile Files and Directories
  systemd-update-utmp-runlevel.service loaded inactive   dead         start Update UTMP about System Runlevel Changes
  systemd-update-utmp.service          loaded active     exited             Update UTMP about System Boot/Shutdown
  systemd-user-sessions.service        loaded active     exited             Permit User Sessions
  ubnt-dpkg-daemon.service             loaded inactive   dead         start UniFi dpkg daemon
  ubnt-dpkg-restore.service            loaded active     exited             UniFi Application Restore
  ucs-agent.service                    loaded activating auto-restart       UniFi Credential Server Agent
  uid-agent.service                    loaded activating auto-restart       UID Agent service
  ulp-go.service                       loaded activating auto-restart       ULP-GO
  unifi-core.service                   loaded activating start        start UniFi Core
  unifi-credential-server.service      loaded activating auto-restart       UniFi Credential Server Service
  unifi-directory.service              loaded activating auto-restart       UniFi Directory Service
  unifi-identity-update.service        loaded activating auto-restart       UniFi Identity Update
  unifi.service                        loaded inactive   dead         start unifi
  uos-agent.service                    loaded active     running            UniFi OS Agent
  uos-discovery-client.service         loaded active     running            UniFi OS discovery client

[sgade]

Thanks for providing this image. However, I am also running into the issue of not being able to connect to the web interface. The systemctl output look as described on the troubleshooting page.
I am also running in docker on the DS920+.

This is the output of tree:

/data/postgresql
[drwxr-xr-x root    ]  /data/postgresql/14
[drwxr-xr-x postgres]  /data/postgresql/14/main
[-rwxr-xr-x root    ]  /data/postgresql/14/main/.configured
[drwxr-xr-x postgres]  /data/postgresql/14/main/conf
[drwxr-xr-x postgres]  /data/postgresql/14/main/conf/conf.d
[-rw-r--r-- postgres]  /data/postgresql/14/main/conf/environment
[-rw-r--r-- postgres]  /data/postgresql/14/main/conf/pg_ctl.conf
[-rw-r----- postgres]  /data/postgresql/14/main/conf/pg_hba.conf
[-rw-r----- postgres]  /data/postgresql/14/main/conf/pg_ident.conf
[-rw-r--r-- postgres]  /data/postgresql/14/main/conf/postgresql.conf
[-rw-r--r-- postgres]  /data/postgresql/14/main/conf/start.conf
[drwx------ postgres]  /data/postgresql/14/main/data
[-rw------- postgres]  /data/postgresql/14/main/data/PG_VERSION
[drwx------ postgres]  /data/postgresql/14/main/data/base
[drwx------ postgres]  /data/postgresql/14/main/data/global
[drwx------ postgres]  /data/postgresql/14/main/data/pg_commit_ts
[drwx------ postgres]  /data/postgresql/14/main/data/pg_dynshmem
[drwx------ postgres]  /data/postgresql/14/main/data/pg_logical
[drwx------ postgres]  /data/postgresql/14/main/data/pg_multixact
[drwx------ postgres]  /data/postgresql/14/main/data/pg_notify
[drwx------ postgres]  /data/postgresql/14/main/data/pg_replslot
[drwx------ postgres]  /data/postgresql/14/main/data/pg_serial
[drwx------ postgres]  /data/postgresql/14/main/data/pg_snapshots
[drwx------ postgres]  /data/postgresql/14/main/data/pg_stat
[drwx------ postgres]  /data/postgresql/14/main/data/pg_stat_tmp
[drwx------ postgres]  /data/postgresql/14/main/data/pg_subtrans
[drwx------ postgres]  /data/postgresql/14/main/data/pg_tblspc
[drwx------ postgres]  /data/postgresql/14/main/data/pg_twophase
[drwx------ postgres]  /data/postgresql/14/main/data/pg_wal
[drwx------ postgres]  /data/postgresql/14/main/data/pg_xact
[-rw------- postgres]  /data/postgresql/14/main/data/postgresql.auto.conf
[-rw------- postgres]  /data/postgresql/14/main/data/postmaster.opts
[-rw------- postgres]  /data/postgresql/14/main/data/postmaster.pid

22 directories, 11 files

Any ideas on what to try next?

[lemker]

See #70 and #75.
I suspect some of these NAS boxes have permission issues with bind mounts on shares.
Check logs: journalctl -xeu postgresql-cluster@14-main.service
Try some of the fixes suggested, especially #75 (comment)

Ideally I would like to see exactly which fix works so I can implement it, as I cannot reproduce the issue.

[sgade]

Thanks for linking the fixes. I tried the fix from this PR !77 but that didn't fix it.

I then applied the other permissions from #75 (comment), had to wait quite a bit, but now the UniFi OS server is booting 🎉

[Panja0]

Unfortunately still the same problem for me.
Tried fix #70 and #75 but without any luck.

sudo chown 10100:104 /volume2/docker/unifi-os/data/postgresql
sudo chown 10100:104 /volume2/docker/unifi-os/data/postgresql/14
sudo chown 10100:104 /volume2/docker/unifi-os/data/postgresql/14/main
sudo chown 10100:104 /volume2/docker/unifi-os/data/postgresql/14/main/data

[nokogiri546]

I had the same issue on a synology nas. #70 and #75 did not solve the issue. However, additionally applying the patched uos-entrypoint.sh fixed it.

[AdamKearn]

I had the same problem on my little Raspberry Pi running this container.

Tried to install it directly using the official script that UniFi provides instead of using Docker, and it then showed me an error saying that there was no enough disk space.

I wonder if you guys are getting that problem too, with there not being 15-20GB free.

I ended up just installing it on another device instead, as I was unable to free or expand the disk on my Pi.