Incompatible DB version

[Ji-Shao]

Current Behavior

Following the following steps:
git clone -b release https://github.com/netbox-community/netbox-docker.git
cd netbox-docker
tee docker-compose.override.yml <<EOF
services:
netbox:
ports:
- 8000:8080
EOF
docker compose pull
docker compose up

but found the following error:

<--snip-->
redis-cache-1 | 1:M 15 Oct 2025 06:10:23.069 * Ready to accept connections tcp
netbox-1 | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1 | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1 | ⏳ Waiting on DB... (24s / 30s)

Troubleshooting:

docker logs -f c89066466d9f

PostgreSQL Database directory appears to contain a database; Skipping initialization

2025-10-15 06:27:54.449 UTC [1] FATAL: database files are incompatible with server
2025-10-15 06:27:54.449 UTC [1] DETAIL: The data directory was initialized by PostgreSQL version 16, which is not compatible with this version 17.6.

Expected Behavior

Modify "docker-compose.yml"

from : (not working)

postgres

postgres:
image: docker.io/postgres:17-alpine

to : (working)

postgres

postgres:
image: docker.io/postgres:16-alpine

Docker Compose Version

docker compose version Docker Compose version v2.40.0

Docker Version

docker version
Client: Docker Engine - Community
 Version:           28.5.1
 API version:       1.51
 Go version:        go1.24.8
 Git commit:        e180ab8
 Built:             Wed Oct  8 12:17:03 2025
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          28.5.1
  API version:      1.51 (minimum version 1.24)
  Go version:       go1.24.8
  Git commit:       f8215cc
  Built:            Wed Oct  8 12:17:03 2025
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.7.28
  GitCommit:        b98a3aace656320842a23f4a392a33f46af97866
 runc:
  Version:          1.3.0
  GitCommit:        v1.3.0-0-g4ca628d1
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

The git Revision

git rev-parse HEAD ae5f7d2

The git Status

git status
On branch release
Your branch is up to date with 'origin/release'.

nothing to commit, working tree clean

Startup Command

docker compose up

NetBox Logs

docker compose up
[+] Running 6/6
 ✔ Network netbox-docker_default            Created                                                                                                                                                                                                                                                                      0.0s 
 ✔ Container netbox-docker-redis-cache-1    Created                                                                                                                                                                                                                                                                      0.1s 
 ✔ Container netbox-docker-redis-1          Created                                                                                                                                                                                                                                                                      0.1s 
 ✔ Container netbox-docker-postgres-1       Created                                                                                                                                                                                                                                                                      0.1s 
 ✔ Container netbox-docker-netbox-1         Created                                                                                                                                                                                                                                                                      0.0s 
 ✔ Container netbox-docker-netbox-worker-1  Created                                                                                                                                                                                                                                                                      0.0s 
Attaching to netbox-1, netbox-worker-1, postgres-1, redis-1, redis-cache-1
redis-1  | 1:M 15 Oct 2025 06:27:54.303 # WARNING Memory overcommit must be enabled! Without it, a background save or replication may fail under low memory condition. Being disabled, it can also cause failures without low memory condition, see https://github.com/jemalloc/jemalloc/issues/1328. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
redis-1  | 1:M 15 Oct 2025 06:27:54.303 * oO0OoO0OoO0Oo Valkey is starting oO0OoO0OoO0Oo
redis-1  | 1:M 15 Oct 2025 06:27:54.303 * Valkey version=8.1.4, bits=64, commit=00000000, modified=0, pid=1, just started
redis-1  | 1:M 15 Oct 2025 06:27:54.303 * Configuration loaded
redis-1  | 1:M 15 Oct 2025 06:27:54.303 * monotonic clock: POSIX clock_gettime
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * Running mode=standalone, port=6379.
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * Server initialized
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * Reading RDB base file on AOF loading...
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * Loading RDB produced by Redis version 7.2.5
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * RDB age 39136972 seconds
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * RDB memory usage when created 0.83 Mb
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * RDB is base AOF
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * Done loading RDB, keys loaded: 0, keys expired: 0.
redis-1  | 1:M 15 Oct 2025 06:27:54.304 * DB loaded from base file appendonly.aof.1.base.rdb: 0.000 seconds
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.336 # WARNING Memory overcommit must be enabled! Without it, a background save or replication may fail under low memory condition. Being disabled, it can also cause failures without low memory condition, see https://github.com/jemalloc/jemalloc/issues/1328. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.336 * oO0OoO0OoO0Oo Valkey is starting oO0OoO0OoO0Oo
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.336 * Valkey version=8.1.4, bits=64, commit=00000000, modified=0, pid=1, just started
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.336 * Configuration loaded
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.336 * monotonic clock: POSIX clock_gettime
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.336 * Running mode=standalone, port=6379.
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.337 * Server initialized
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.337 * Loading RDB produced by Valkey version 8.1.4
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.337 * RDB age 16 seconds
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.337 * RDB memory usage when created 0.98 Mb
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.337 * Done loading RDB, keys loaded: 1, keys expired: 0.
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.337 * DB loaded from disk: 0.000 seconds
redis-cache-1  | 1:M 15 Oct 2025 06:27:54.337 * Ready to accept connections tcp
postgres-1     | 
postgres-1     | PostgreSQL Database directory appears to contain a database; Skipping initialization
postgres-1     | 
postgres-1     | 2025-10-15 06:27:54.449 UTC [1] FATAL:  database files are incompatible with server
postgres-1     | 2025-10-15 06:27:54.449 UTC [1] DETAIL:  The data directory was initialized by PostgreSQL version 16, which is not compatible with this version 17.6.
postgres-1 exited with code 1
redis-1        | 1:M 15 Oct 2025 06:27:55.308 * DB loaded from incr file appendonly.aof.1.incr.aof: 1.004 seconds
redis-1        | 1:M 15 Oct 2025 06:27:55.308 * DB loaded from append only file: 1.004 seconds
redis-1        | 1:M 15 Oct 2025 06:27:55.308 * Opening AOF incr file appendonly.aof.1.incr.aof on server start
redis-1        | 1:M 15 Oct 2025 06:27:55.308 * Ready to accept connections tcp
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (0s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (3s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (6s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (9s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (12s / 30s)
redis-1        | 1:M 15 Oct 2025 06:28:55.004 * 10000 changes in 60 seconds. Saving...
redis-1        | 1:M 15 Oct 2025 06:28:55.004 * Background saving started by pid 399
redis-1        | 399:C 15 Oct 2025 06:28:55.008 * DB saved on disk
redis-1        | 399:C 15 Oct 2025 06:28:55.008 * Fork CoW for RDB: current 0 MB, peak 0 MB, average 0 MB
redis-1        | 1:M 15 Oct 2025 06:28:55.104 * Background saving terminated with success
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (15s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (18s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (21s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (24s / 30s)
netbox-1       | django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution
netbox-1       | [ Use DB_WAIT_DEBUG=1 in netbox.env to print full traceback for errors here ]
netbox-1       | ⏳ Waiting on DB... (27s / 30s)
netbox-1       | ❌ Waited 30s or more for the DB to become ready.
netbox-1 exited with code 1
dependency failed to start: container netbox-docker-netbox-1 exited (1)
exit: 1

Content of docker-compose.override.yml

cat docker-compose.override.yml
services:
  netbox:
    ports:
      - 8000:8080

[tobiasge]

You have a PostgreSQL volume with a database from an old version.
https://github.com/netbox-community/netbox-docker/wiki/Updating#common-issues