Question 222095 in Docker Question posted in
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Unable to mount a file in the docker

I got the following command to run the docker (following the running command in https://hub.docker.com/r/manios/nagios )

DOCKER_CONFIGS=$(pwd)

docker run --name nagios  
  -v $DOCKER_CONFIGS/conf/etc/:/opt/nagios/etc/ 
  -v $DOCKER_CONFIGS/conf/var:/opt/nagios/var/ 
  -v $DOCKER_CONFIGS/conf/custom-plugins:/opt/Custom-Nagios-Plugins 
  -v $DOCKER_CONFIGS/conf/ssmtp/ssmtp.conf:/etc/ssmtp/ssmtp.conf 
  -p 0.0.0.0:8990:80 
  manios/nagios:latest

And I’m getting the following error

docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "/home/pi/docker/nagios/conf/ssmtp/ssmtp.conf" to rootfs at "/etc/ssmtp/ssmtp.conf": mount /home/pi/docker/nagios/conf/ssmtp/ssmtp.conf:/etc/ssmtp/ssmtp.conf (via /proc/self/fd/6), flags: 0x5000: not a directory: unknown: Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type.
ERRO[0001] error waiting for container:

The issue is that docker tries to mount a folder to a file. Inside the docker container I can see /etc/ssmtp/ssmtp.conf as a file. and $DOCKER_CONFIGS/conf/ssmtp/ssmtp.conf creating as a folder. How do I resolve this issue?

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2

Answers


  1. 0

    Have you checked whether /home/pi/docker/nagios/conf/ssmtp/ssmtp.conf is existing on your machine?

    I could imagine that if this path (and file) doesn’t exist, it can’t be mounted.

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  2. 0

    $DOCKER_CONFIGS/conf/ssmtp/ssmtp.conf creating as a folder. How do I resolve this issue?

    Create $DOCKER_CONFIGS/conf/ssmtp/ssmtp.conf file before starting the contianer.

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