can't start minio in ubuntu due to "Variable MINIO_VOLUMES not set in /etc/default/minio"; - minio

Question

I am installing latest minio on ubuntu 18.04 following the minio installation instruction from here.
after the installation, try to run it with sudo systemctl start minio.service
but it didn't work with message.
...skipping...
● minio.service - MinIO
Loaded: loaded (/etc/systemd/system/minio.service; disabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Thu 2022-12-08 17:03:45 CST; 2min 1s ago
Docs: https://docs.min.io
Process: 5072 ExecStart=/usr/local/bin/minio server $MINIO_OPTS $MINIO_VOLUMES (code=exited, status=1/FAILURE)
Process: 5050 ExecStartPre=/bin/bash -c if [ -z "${MINIO_VOLUMES}" ]; then echo "Variable MINIO_VOLUMES not set in /etc/default/minio"; exit 1; fi (code=exited, status=0/SUCCES
Main PID: 5072 (code=exited, status=1/FAILURE)
12月 08 17:03:45 nky systemd[1]: minio.service: Service hold-off time over, scheduling restart.
12月 08 17:03:45 nky systemd[1]: minio.service: Scheduled restart job, restart counter is at 5.
12月 08 17:03:45 nky systemd[1]: Stopped MinIO.
12月 08 17:03:45 nky systemd[1]: minio.service: Start request repeated too quickly.
12月 08 17:03:45 nky systemd[1]: minio.service: Failed with result 'exit-code'.
12月 08 17:03:45 nky systemd[1]: Failed to start MinIO.
it is noted something wrong with 'MINIO_VOLUMES', but I have set the variable in the /etc/default/minio
MINIO_ROOT_USER=myminioadmin
MINIO_ROOT_PASSWORD=minio-secret-key-change-me
# MINIO_VOLUMES sets the storage volume or path to use for the MinIO server.
MINIO_VOLUMES="/mnt/data"
what is wrong with my configuration?

Answer 1

There is nothing obvious wrong with your configuration but you did not post your service file. Almost always this is a permissions issue, you can change the systemd service user to root to test. Common issues after that are that the binary is not present in the location specified in the service file, or not executable.