Monthly Archives: September 2020

Docker Volumes Mounting File as Folder on Windows

Hey everyone,

I ran into a small issue today using docker-compose. I had a config file I was trying to mount as a volume however running “docker-compose up” generated a folder instead.

ERROR: for grafana Cannot start service grafana: OCI runtime create failed: container_linux.go:349: starting container process caused “process_linux.go:449: container init caused \”rootfs_linux.go:58: mounting \\\”/host_mnt/e/repos/Sample-Twitch/grafana/datasources.yml\\\” to rootfs \\\”/var/lib/docker/overlay2/f5c9553407551b68dc5d5877d748ba2bf7d2f0dd2ad12c73e39be40af185c82d/merged\\\” at \\\”/var/lib/docker/overlay2/f5c9553407551b68dc5d5877d748ba2bf7d2f0dd2ad12c73e39be40af185c82d/merged/etc/grafana/provisioning/datasources/prometheus.yaml\\\” caused \\\”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 ERROR: Encountered errors while bringing up the project.

The issue turned out to be an oversight on my part, I’d misspelled the config filename and docker was unable to find it. Consequently, it generated the missing file as a directory.

It took a bit of Googling to narrow this down, but eventually this stackoverflow post pointed me in the right direction: https://stackoverflow.com/a/44950494/522859

Thanks,
Chris

Useful RabbitMQ Commands

Hey everyone,

This is more for personal reference, but hopefully it’s able to help someone else as well. This post will simply be used for a list of RabbitMQ commands that I’ve found handy and may need to use again down the track.

CommandDescriptionReferenceMisc
rabbitmqctl stop_app
rabbitmqctl reset # Be sure you really want to do this! rabbitmqctl start_app
Used to completely reset rabbit mqhttps://stackoverflow.com/a/11459967/522859

Useful Docker Commands

Hey everyone,

This is more for personal reference, but hopefully it’s able to help someone else as well. This post will simply be used for a list of docker commands that I’ve found handy and may need to use again down the track.

CommandDescriptionReferenceMisc
docker build -t “twitch/warehouse” -f .\Dockerfile-warehouse .Build and tag an imageUsed while following this tutorial: https://github.com/MassTransit/Sample-Twitch
docker psList all running containers
docker exec -it <container_id> shAccess terminal of running containerhttps://stackoverflow.com/a/30173220/522859
docker stop <container_id>Stop a running containerCan then start it again using docker start <container_name>

MassTransit with Mediator – ‘IServiceCollectionBusConfigurator’ does not contain a definition for ‘AddMediator’ and the best extension method overload ‘DependencyInjectionRegistrationExtensions.AddMediator(IServiceCollection, Action)’ requires a receiver of type ‘IServiceCollection’

Hi everyone,

I’m currently learning MassTransit by following a great video series by Chris Patterson: https://www.youtube.com/watch?v=dxHNAn69x6w&list=PLx8uyNNs1ri2MBx6BjPum5j9_MMdIfM9C&index=1. Unfortunately, when trying to add mediator as instructed in the first video I hit the following error:

‘IServiceCollectionBusConfigurator’ does not contain a definition for ‘AddMediator’ and the best extension method overload ‘DependencyInjectionRegistrationExtensions.AddMediator(IServiceCollection, Action)’ requires a receiver of type ‘IServiceCollection’

After a bit of Googling I came across some upgrade documentation with the following highlight:

Container configuration has changed, and now uses the AddMediator method (instead of AddMassTransit).

The solution ended up being as follows:

services.AddMediator(x =>
{
x.AddConsumersFromNamespaceContaining();
x.AddRequestClient();
});

Thanks to this link for the info: https://masstransit-project.com/getting-started/upgrade-v6.html#version-7