Send-command is broken

[iMaiconP]

Image: itzg/minecraft-bedrock-server (latest)
Host: Ubuntu 24.04 x86_64
Docker: official package (not Snap)

Problem:
send-command always fails with:

find: '/proc//exe': Permission denied
ERROR: failed to search for bedrock server process

Observations:

• docker attach works normally
• bedrock_server is running
• /proc//exe cannot be resolved even from inside the container
• writing to /proc//fd/0 also fails with Permission denied
• send-command relies on scanning /proc/*/exe

[itzg]

Hmm, I can't tell yet if it's a user permission issue since the send-command assumes the container user is root initially. It might also be a script bug since there's supposed to be a number in between the two slashes after /proc

docker attach might have to be your workaround for now.

[itzg]

FWIW this is the find command that is searching process IDs for an exe that resolves to the known server entry points:

find /proc -mindepth 2 -maxdepth 2 -name exe \( -lname '/data/bedrock_server-*' -o -lname /usr/local/bin/box64 \) -printf '%h' -quit

It would be interesting to see the output of just

find /proc -mindepth 2 -maxdepth 2 -name exe

[iMaiconP]

/proc/1/exe
/proc/12/exe
/proc/39/exe
/proc/18259/exe

[itzg]

Just to double check, can you docker pull the image again and make sure to be running that. Providing the startup logs would help to cross check things.

[iMaiconP]

maicon@casapinheiro:~$ docker inspect minecraft --format '{{.Image}}'
sha256:d252669ce19d73718ef5167897235c5118e4ae1b7011cf6db3733b5d2cd2670b
maicon@casapinheiro:~$ docker compose down minecraft
[+] down 1/1
 ✔ Container minecraft Removed                                    10.4s
maicon@casapinheiro:~$ docker compose pull minecraft
[+] pull 1/1
 ✔ Image itzg/minecraft-bedrock-server Pulled                      1.1s
maicon@casapinheiro:~$ docker image inspect itzg/minecraft-bedrock-server --format '{{index .RepoDigests 0}}'
itzg/minecraft-bedrock-server@sha256:d252669ce19d73718ef5167897235c5118e4ae1b7011cf6db3733b5d2cd2670b
maicon@casapinheiro:~$ docker compose up -d minecraft
[+] up 25/25
 (Removed unnecessary containers)
 ✔ Container minecraft          Started                            0.3s
maicon@casapinheiro:~$ docker logs -f minecraft
DEBU[0000] Using /data to match uid and gid
DEBU[0000] Resolved UID=1000 from match path
DEBU[0000] Resolved GID=1000 from match path
Image info: buildtime=2026-06-23T21:59:04.583Z,version=latest,revision=612fb2479ecefb8f827f292c78c150d679e91164
Looking up latest version...
Starting Bedrock server...
NO LOG FILE! - setting up server logging...
[2026-06-26 09:35:42:127 INFO] Starting Server
[2026-06-26 09:35:42:127 INFO] Version: 1.26.32.2
[2026-06-26 09:35:42:127 INFO] Session ID: de6755ee-a614-41ad-af19-ba2fac317442
[2026-06-26 09:35:42:127 INFO] Build ID: 46948671
[2026-06-26 09:35:42:127 INFO] Branch: r/26_u3
[2026-06-26 09:35:42:127 INFO] Commit ID: 8dfd7355e9ce6a57bcb09bd2cea696b7b76b6cff
[2026-06-26 09:35:42:127 INFO] Configuration: Publish
[2026-06-26 09:35:42:129 INFO] Level Name: Bedrock level
[2026-06-26 09:35:42:131 INFO] No CDN config file found at: cdn_config.json for dedicated server
[2026-06-26 09:35:42:131 INFO] Game mode: 0 Survival
[2026-06-26 09:35:42:131 INFO] Difficulty: 1 EASY
[2026-06-26 09:35:42:225 WARN] Content logging to console is disabled.  Enable it with content-log-console-output-enabled=true in server.properties
[2026-06-26 09:35:42:393 INFO]

#####################################################
#                                                   #
#               LOADING VANILLA WORLD               #
#                                                   #
#####################################################
[2026-06-26 09:35:54:121 INFO] Opening level 'worlds/Bedrock level/db'
[2026-06-26 09:35:55:114 INFO] Pack Stack - None
[2026-06-26 09:36:05:888 INFO] IPv4 supported, port: 19132: Used for gameplay and LAN discovery
[2026-06-26 09:36:05:888 INFO] IPv6 supported, port: 19133: Used for gameplay
[2026-06-26 09:36:05:981 INFO] Waiting for Minecraft services...
[2026-06-26 09:36:06:079 INFO] Server started.
[2026-06-26 09:36:06:079 INFO] ================ TELEMETRY MESSAGE ===================
[2026-06-26 09:36:06:079 INFO] Server Telemetry is currently not enabled.
[2026-06-26 09:36:06:079 INFO] Enabling this telemetry helps us improve the game.
[2026-06-26 09:36:06:079 INFO]
[2026-06-26 09:36:06:079 INFO] To enable this feature, add the line 'emit-server-telemetry=true'
[2026-06-26 09:36:06:079 INFO] to the server.properties file in the handheld/src-server directory
[2026-06-26 09:36:06:079 INFO] ======================================================

BTW here's the Minecraft section of my docker-compose.yaml file, just in case:

  minecraft:
    container_name: minecraft
    image: itzg/minecraft-bedrock-server
    restart: always
    environment:
      - EULA=TRUE
      - SERVER_PORT=19132
      - PACKAGE_BACKUP_KEEP=1
      - SERVER_NAME=iMaicon
      - SERVER_DESCRIPTION=Uso particular apenas
      - LEVEL_NAME=Bedrock level
      - ALLOW_CHEATS=true
      - ALLOW_LIST=true
      - MAX_THREADS=0
      - DEFAULT_PLAYER_PERMISSION_LEVEL=operator
      - OP_PERMISSION_LEVEL=4
    ports:
      - "19132:19132/udp"
      - "19133:19133/udp"
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /mnt/hdd1/YAMLs/Mine:/data
    stdin_open: true
    tty: true
    networks:
      local_macvlan:
        ipv4_address: 192.168.100.224

[itzg]

Thanks @iMaiconP

When I get a chance I'll see if I can reproduce it also.