gitlab pipeline with embedded mongodb - mongodb

Question

I'm trying to build a pipeline for a gradle java app which is using an embedded mongo instance. I have built a container to which has java and mongo. However, I keep getting the following error for all my test that require the embedded mongo instance.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'embeddedMongoServer'
defined in class path resource [org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfiguration.class]:
Invocation of init method failed; nested exception is java.io.IOException:
Cannot run program "/tmp/extract-f816c11c-614b-46d7-ad29-68923ca9d624extractmongod": error=2, No such file or directory
My gitlab-ci.yml looks like this:
image: java:latest
services:
- docker:dind
variables:
GRADLE_OPTS: "-Dorg.gradle.daemon=false"
DOCKER_DRIVER: overlay
SPRING_PROFILES_ACTIVE: gitlab-ci
stages:
- build
- test
build:
stage: build
script: ./gradlew --build-cache assemble
cache:
key: "$CI_COMMIT_REF_NAME"
policy: push
paths:
- build
- .gradle
test:
stage: test
image: registry.gitlab.com/path/to/explorer-ci:1.0.0
script: ./gradlew check --debug
cache:
key: "$CI_COMMIT_REF_NAME"
policy: pull
paths:
- build
- .gradle
The build job works fine, the test job fails. My explorer-ci container is built using the following Dockerfile
FROM openjdk:8-jdk-alpine
RUN apk update && \
apk add --no-cache \
mongodb \
bash
VOLUME /data/db
VOLUME log
RUN ["mongod", "--smallfiles", "--fork", "--logpath", "log/mongodb.log"]
I've spent a week with a bunch of different configs but can't seem to hack it. Just to note, builds/tests run fine on my local machine. Any ideas of what I'm doing wrong?

Answer 1

On reflection, as I am using an embedded mongo instance, I do not have a dependency on mongodb to build or test. I am now using the following gitlab-ci.yaml and it works fine.
image: openjdk:8-jdk
variables:
GRADLE_OPTS: "-Dorg.gradle.daemon=false"
DOCKER_DRIVER: overlay
SPRING_PROFILES_ACTIVE: gitlab-ci
stages:
- build
- test
build:
stage: build
script: ./gradlew --build-cache assemble
cache:
key: "$CI_COMMIT_REF_NAME"
policy: push
paths:
- build
- .gradle
test:
stage: test
script: ./gradlew check
cache:
key: "$CI_COMMIT_REF_NAME"
policy: pull
paths:
- build
- .gradle

Answer 2

The issue was on base docker image for your project runner, You need to use jdk version not alpine.
Try to change base image to this image: openjdk:8-jdk and it will work fine.

Answer 3

In our case the solution described at Fladoodle embedded MongoDB on the issues here helped:
https://github.com/flapdoodle-oss/de.flapdoodle.embed.mongo/issues/281
In short - we added this to our Gitlab script (or do this in container setup itself if possible) before running our tests:
apk --no-cache add ca-certificates
wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub
wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.29-r0/glibc-2.29-r0.apk
wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.29-r0/glibc-bin-2.29-r0.apk
apk add glibc-2.29-r0.apk glibc-bin-2.29-r0.apk
wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.29-r0/glibc-i18n-2.29-r0.apk
apk add glibc-bin-2.29-r0.apk glibc-i18n-2.29-r0.apk
/usr/glibc-compat/bin/localedef -i en_US -f UTF-8 en_US.UTF-8

Answer 4

just updating the dependency should resolve:
<dependency>
<groupId>de.flapdoodle.embed</groupId>
<artifactId>de.flapdoodle.embed.mongo</artifactId>
<version>2.2.0</version>
<scope>test</scope>
</dependency>