GCloud Part 1: Pushing docker containers to GCR

docker-compose: setup of spring boot app and it's dependant services

In this video I show how to create an image of a spring boot app that was previously built with gradle and use that image alongside all the other services it depends on. Docker compose is a very useful tool that can help us reduce the complexity of configuring services to be run on docker.

Docker container unhealthy

The other day I was just starting all my docker instances by running docker-compose up -d like I often do, but it started failing telling me that some of the containers were unhealthy.

results-db is up-to-date

Starting db cnlts_main-db_1 ...

Starting db cnlts_main-db_1 ... done

ERROR: for cnlts-db-flyway Container "0ab31508826c" is unhealthy.

ERROR: Encountered errors while bringing up the project.

After running docker logs "0ab31508826c" to see what was going on in the container, I noticed this:



initdb: could not create directory "/var/lib/postgresql/data/pg_xlog": No space left on device

So went to the docker preferences page using the docker GUI to try to find the memory allocation in the disk settings

                                 

So there I say that the Disk image size was close to the max. One option was to increase it but I didn't want to do that because it would take unnecessarily more resources from my laptop. I think 64GB is more than enough. So what I just had to do was to delete that file called Docker.raw

The path to that file was written in the gui. I just had to go to that directory and delete it.

rm /Users/<username>/Library/Containers/com.docker.docker/Data/vms/0/Docker.raw 

Dockerizing a modern Java application

In this video I show the structure of a modern Java web application that uses Spring boot, Spring mvc, gradle, angularjs and then I will show how it is commonly prepared to run from within a docker container.

Full Source codes: https://github.com/SFRJ/tictactoe