MongoDB Docker container: ERROR: Cannot write pid file to /tmp/tmp.aLmNg7ilAm: No space left on device

Question

I started a MongoDB container like so:

docker run -d -p 27017:27017 --net=cdt-net --name cdt-mongo mongo

I saw that my MongoDB container exited:

0e35cf68a29c        mongo               "docker-entrypoint.s…"   Less than a second ago   Exited (1) 3 seconds ago                       cdt-mongo

I checked my Docker logs, I see:

$ docker logs 0e35cf68a29c
about to fork child process, waiting until server is ready for connections.
forked process: 21
2018-01-12T23:42:03.413+0000 I CONTROL  [main] ***** SERVER RESTARTED *****
2018-01-12T23:42:03.417+0000 I CONTROL  [main] ERROR: Cannot write pid file to /tmp/tmp.aLmNg7ilAm: No space left on device
ERROR: child process failed, exited with error number 1

Does anyone know what this error is about? Not enough space in the container?

Answer 1

I had to delete old Docker images to free up space, here are the commands I used:

# remove all unused / orphaned images
echo -e  "Removing unused images..."
docker rmi -f $(docker images --no-trunc | grep "<none>" | awk "{print \$3}") 2>&1 | cat;
echo -e  "Done removing unused images"

# clean up stuff -> using these instructions https://lebkowski.name/docker-volumes/
echo -e  "Cleaning up old containers..."
docker ps --filter status=dead --filter status=exited -aq | xargs docker rm -v 2>&1 | cat;
echo -e  "Cleaning up old volumes..."
docker volume ls -qf dangling=true | xargs docker volume rm 2>&1 | cat;