Running docker integration test containers while dev containers running - testing

I have a Makefile that looks like this:
dev:
docker-compose up -d --build
test:
DOCKER_ENV="-test" docker-compose up -d --build
// run some integration tests on the containers then
// shut them down (and let ephemeral database disappear)
DOCKER_ENV="-test" docker-compose down -v
And my docker-compose looks like this:
services:
foo:
container_name: foo${DOCKER_ENV}
image: foo:latest
bar:
container_name: bar${DOCKER_ENV}
image: bar:latest
When I try to run make dev and then make test the latter causes the dev containers to be rebuilt with the new name ("-test") rather than create an entire separate set of containers—which is what I want.
How can I keep the dev environment running and periodically spin up the test environment? (We'll do this on CI at some point, but I want developers to be able to locally run all the tests.)

Use the docker-compose project name to separate dev from test, e.g.:
dev:
docker-compose up -d --build
test:
export DOCKER_PROJ=`basename \`pwd\``"-test"
docker-compose -p ${DOCKER_PROJ} up -d --build
// run some integration tests on the containers then
// shut them down (and let ephemeral database disappear)
docker-compose -p ${DOCKER_PROJ} down -v
(My Makefile syntax is a little rusty, I'm sure there are cleaner ways to do that.)

Related

gitlab CI/CD: How to enter into a container for testing i.e getting an interactive shell

Like in docker we can enter a container by and have an interactive shell
docker-compose exec containername /bin/bash
Similary in the script in gitlab CI/CD can we enter into it. Like it provides an interactive shell
Eg:
build:
stage: build
script:
- pwd; ls -al
HERE I WANT TO HAVE AN INTERACTIVE SHELL SO THAT I CAN CHECK FEW THINGS
I think we need to do an small detour here and explain how jobs are working in GitLab CI.
Each job is an encapsulated docker container. The container only executes things you like to be executed within the script directive. By default the jobs on shared runners are using a ruby container image.
If you want to check, what you have available within your image, or you want try things out locally. You can do so running a container with this image locally and mounting your project folder into it.
docker run --rm -v "$(pwd):/build/project" -w "/build/project" -it <the job image> /bin/bash # or /bin/sh or whatever shell is available in the image.
# -v mounts the current directory int /build/project in your container
# -w changes the working directory to the mounting point
# /bin/bash starts the shell, it might be that there are others within the image
If you want to use a different docker image, lets say because you are running some other build tool, you can specify this with the image directive like:
build:
image: maven:latest
script:
- echo "some output"
You do have the functionality available within your job, which is provided by the image. As the job will run within a container of that image.
You can even use some tools like https://github.com/firecow/gitlab-ci-local to verify this locally. But in the end those are just docker images, and you can easily recreate the flow on your own.

Run flyway in gitlab-ci

I use flyway container and it works well locally by:
docker run -v ${PWD}/db/migration:/flyway/sql --rm flyway/flyway -mixed=true -url='jdbc:sqlserver://my-server.net;databaseName=TEST_DB' -user=$MSSQL_USER -password=$MSSQL_PW migrate
I tried to use it in gitlab-ci, but the following does not work because the docker run part throws error - cannot connect to docker daemon.
stages:
- test
- deploy
test-migration:
stage: test
services:
- microsoft/mssql-server-linux:2017-latest-ubuntu
- docker-hub/docker:dind
variables:
ACCEPT_EULA: 'Y'
SA_PASSWORD: 'YourStrong!Passw0rd'
script:
- docker run -v ${PWD}/db/migration:/flyway/sql --rm flyway/flyway -mixed=true -url='jdbc:sqlserver://ssql-server-linux:1433;databaseName=TEST_DB' -user=SA -password='YourStrong!Passw0rd' migrate
deploy:
stage: deploy
services:
- docker-hub/docker:dind
script:
- docker run -v ${PWD}/db/migration:/flyway/sql --rm flyway/flyway -mixed=true -url='jdbc:sqlserver://my-server.net;databaseName=TEST_DB' -user=$MSSQL_USER -password=$MSSQL_PW migrate
Instead of calling docker run, should use
image: flyway/flyway , and calling the command in the script section.
But I'm wondering about mounting the volume that is not supported in gitlab CI yet.
https://gitlab.com/gitlab-org/gitlab-runner/issues/3207
Any idea?
cannot connect to docker daemon means DOCKER_HOST is missing
After adding DOCKER_HOST in variables this works!
https://docs.gitlab.com/ee/ci/docker/using_docker_build.html#use-docker-in-docker-workflow-with-docker-executor
Mounting a volume also works, and the following works well.
script:
- docker run -v ${PWD}/db/migration:/flyway/sql --rm flyway/flyway -mixed=true -url='jdbc:sqlserver://ssql-server-linux:1433;databaseName=TEST_DB' -user=SA -password='YourStrong!Passw0rd' migrate

Whether drone.io support reusing docker container for build

I have setup drone.io locally and created a .drone.yml for CI build. But I found drone removes the docker container after finishing the build. Whether it support reusing the docker container? I am working on gradle project and the initial build takes a long time to download java dependencies.
UPDATE1
I used below command to set the admin user on running drone-server container.
docker run -d \
-e DRONE_GITHUB=true \
-e DRONE_GITHUB_CLIENT="xxxx" \
-e DRONE_GITHUB_SECRET="xxxx" \
-e DRONE_SECRET="xxxx" \
-e DRONE_OPEN=true \
-e DRONE_DATABASE_DRIVER=mysql \
-e DRONE_DATABASE_DATASOURCE="root:root#tcp(mysql:3306)/drone?parseTime=true" \
-e DRONE_ADMIN="joeyzhao0113" \
--restart=always \
--name=drone-server \
--link=mysql \
drone/drone:0.5
After doing this, I use the user joeyzhao0113 to login drone server but failed to enable the Trusted flag on the setting page. The popup message dialog shows setting successfully see below screenshot. But the flag keep showing disabled always.
No, it is not possible to re-use a Docker container for your Drone build. Build containers are ephemeral and are destroyed at the end of every build.
That being said, it doesn't mean your problem cannot be solved.
I think a better way to phrase this question would be "how do I prevent my builds from having to re-download dependencies"? There are two solutions to this problem.
Option 1, Cache Plugin
The first, recommended solution, is to use a plugin to cache and restore your dependencies. Cache plugins such as the volume cache and s3 cache are community contributed plugins.
pipeline:
# restores the cache from a local volume
restore-cache:
image: drillster/drone-volume-cache
restore: true
mount: [ /drone/.gradle, /drone/.m2 ]
volumes:
- /tmp/cache:/cache
build:
image: maven
environment:
- M2_HOME=/drone/.m2
- MAVEN_HOME=/drone/.m2
- GRADLE_USER_HOME=/drone/.gradle
commands:
- mvn install
- mvn package
# rebuild the cache in case new dependencies were
# downloaded during your build
rebuild-cache:
image: drillster/drone-volume-cache
rebuild: true
mount: [ /drone/.gradle, /drone/.m2 ]
volumes:
- /tmp/cache:/cache
Option 2, Custom Image
The second solution is to create a Docker image with your dependencies, publish to DockerHub, and use this as your build image in your .drone.yml file.
pipeline:
build:
image: some-image-with-all-my-dependencies
commands:
- mvn package

Use GitLab CI to run tests locally?

If a GitLab project is configured on GitLab CI, is there a way to run the build locally?
I don't want to turn my laptop into a build "runner", I just want to take advantage of Docker and .gitlab-ci.yml to run tests locally (i.e. it's all pre-configured). Another advantage of that is that I'm sure that I'm using the same environment locally and on CI.
Here is an example of how to run Travis builds locally using Docker, I'm looking for something similar with GitLab.
Since a few months ago this is possible using gitlab-runner:
gitlab-runner exec docker my-job-name
Note that you need both docker and gitlab-runner installed on your computer to get this working.
You also need the image key defined in your .gitlab-ci.yml file. Otherwise won't work.
Here's the line I currently use for testing locally using gitlab-runner:
gitlab-runner exec docker test --docker-volumes "/home/elboletaire/.ssh/id_rsa:/root/.ssh/id_rsa:ro"
Note: You can avoid adding a --docker-volumes with your key setting it by default in /etc/gitlab-runner/config.toml. See the official documentation for more details. Also, use gitlab-runner exec docker --help to see all docker-based runner options (like variables, volumes, networks, etc.).
Due to the confusion in the comments, I paste here the gitlab-runner --help result, so you can see that gitlab-runner can make builds locally:
gitlab-runner --help
NAME:
gitlab-runner - a GitLab Runner
USAGE:
gitlab-runner [global options] command [command options] [arguments...]
VERSION:
1.1.0~beta.135.g24365ee (24365ee)
AUTHOR(S):
Kamil Trzciński <ayufan#ayufan.eu>
COMMANDS:
exec execute a build locally
[...]
GLOBAL OPTIONS:
--debug debug mode [$DEBUG]
[...]
As you can see, the exec command is to execute a build locally.
Even though there was an issue to deprecate the current gitlab-runner exec behavior, it ended up being reconsidered and a new version with greater features will replace the current exec functionality.
Note that this process is to use your own machine to run the tests using docker containers. This is not to define custom runners. To do so, just go to your repo's CI/CD settings and read the documentation there. If you wanna ensure your runner is executed instead of one from gitlab.com, add a custom and unique tag to your runner, ensure it only runs tagged jobs and tag all the jobs you want your runner to be responsible of.
I use this docker-based approach:
Edit: 2022-10
docker run --entrypoint bash --rm -w $PWD -v $PWD:$PWD -v /var/run/docker.sock:/var/run/docker.sock gitlab/gitlab-runner:latest -c 'git config --global --add safe.directory "*";gitlab-runner exec docker test'
For all git versions > 2.35.2. You must add safe.directory within the container to avoid fatal: detected dubious ownership in repository at.... This also true for patched git versions < 2.35.2. The old command will not work anymore.
Details
0. Create a git repo to test this answer
mkdir my-git-project
cd my-git-project
git init
git commit --allow-empty -m"Initialize repo to showcase gitlab-runner locally."
1. Go to your git directory
cd my-git-project
2. Create a .gitlab-ci.yml
Example .gitlab-ci.yml
image: alpine
test:
script:
- echo "Hello Gitlab-Runner"
3. Create a docker container with your project dir mounted
docker run -d \
--name gitlab-runner \
--restart always \
-v $PWD:$PWD \
-v /var/run/docker.sock:/var/run/docker.sock \
gitlab/gitlab-runner:latest
(-d) run container in background and print container ID
(--restart always) or not?
(-v $PWD:$PWD) Mount current directory into the current directory of the container - Note: On Windows you could bind your dir to a fixed location, e.g. -v ${PWD}:/opt/myapp. Also $PWD will only work at powershell not at cmd
(-v /var/run/docker.sock:/var/run/docker.sock) This gives the container access to the docker socket of the host so it can start "sibling containers" (e.g. Alpine).
(gitlab/gitlab-runner:latest) Just the latest available image from dockerhub.
4. Execute with
Avoid fatal: detected dubious ownership in repository at... More info
docker exec -it -w $PWD gitlab-runner git config --global --add safe.directory "*"
Actual execution
docker exec -it -w $PWD gitlab-runner gitlab-runner exec docker test
# ^ ^ ^ ^ ^ ^
# | | | | | |
# (a) (b) (c) (d) (e) (f)
(a) Working dir within the container. Note: On Windows you could use a fixed location, e.g. /opt/myapp.
(b) Name of the docker container
(c) Execute the command "gitlab-runner" within the docker container
(d)(e)(f) run gitlab-runner with "docker executer" and run a job named "test"
5. Prints
...
Executing "step_script" stage of the job script
$ echo "Hello Gitlab-Runner"
Hello Gitlab-Runner
Job succeeded
...
Note: The runner will only work on the commited state of your code base. Uncommited changes will be ignored. Exception: The .gitlab-ci.yml itself does not have be commited to be taken into account.
Note: There are some limitations running locally. Have a look at limitations of gitlab runner locally.
I'm currently working on making a gitlab runner that works locally.
Still in the early phases, but eventually it will become very relevant.
It doesn't seem like gitlab want/have time to make this, so here you go.
https://github.com/firecow/gitlab-runner-local
If you are running Gitlab using the docker image there: https://hub.docker.com/r/gitlab/gitlab-ce, it's possible to run pipelines by exposing the local docker.sock with a volume option: -v /var/run/docker.sock:/var/run/docker.sock. Adding this option to the Gitlab container will allow your workers to access to the docker instance on the host.
The GitLab runner appears to not work on Windows yet and there is an open issue to resolve this.
So, in the meantime I am moving my script code out to a bash script, which I can easily map to a docker container running locally and execute.
In this case I want to build a docker container in my job, so I create a script 'build':
#!/bin/bash
docker build --pull -t myimage:myversion .
in my .gitlab-ci.yaml I execute the script:
image: docker:latest
services:
- docker:dind
before_script:
- apk add bash
build:
stage: build
script:
- chmod 755 build
- build
To run the script locally using powershell I can start the required image and map the volume with the source files:
$containerId = docker run --privileged -d -v ${PWD}:/src docker:dind
install bash if not present:
docker exec $containerId apk add bash
Set permissions on the bash script:
docker exec -it $containerId chmod 755 /src/build
Execute the script:
docker exec -it --workdir /src $containerId bash -c 'build'
Then stop the container:
docker stop $containerId
And finally clean up the container:
docker container rm $containerId
Another approach is to have a local build tool that is installed on your pc and your server at the same time.
So basically, your .gitlab-ci.yml will basically call your preferred build tool.
Here an example .gitlab-ci.yml that i use with nuke.build:
stages:
- build
- test
- pack
variables:
TERM: "xterm" # Use Unix ASCII color codes on Nuke
before_script:
- CHCP 65001 # Set correct code page to avoid charset issues
.job_template: &job_definition
except:
- tags
build:
<<: *job_definition
stage: build
script:
- "./build.ps1"
test:
<<: *job_definition
stage: test
script:
- "./build.ps1 test"
variables:
GIT_CHECKOUT: "false"
pack:
<<: *job_definition
stage: pack
script:
- "./build.ps1 pack"
variables:
GIT_CHECKOUT: "false"
only:
- master
artifacts:
paths:
- output/
And in nuke.build i've defined 3 targets named like the 3 stages (build, test, pack)
In this way you have a reproducible setup (all other things are configured with your build tool) and you can test directly the different targets of your build tool.
(i can call .\build.ps1 , .\build.ps1 test and .\build.ps1 pack when i want)
I am on Windows using VSCode with WSL
I didn't want to register my work PC as a runner so instead I'm running my yaml stages locally to test them out before I upload them
$ sudo apt-get install gitlab-runner
$ gitlab-runner exec shell build
yaml
image: node:10.19.0 # https://hub.docker.com/_/node/
# image: node:latest
cache:
# untracked: true
key: project-name
# key: ${CI_COMMIT_REF_SLUG} # per branch
# key:
# files:
# - package-lock.json # only update cache when this file changes (not working) #jkr
paths:
- .npm/
- node_modules
- build
stages:
- prepare # prepares builds, makes build needed for testing
- test # uses test:build specifically #jkr
- build
- deploy
# before_install:
before_script:
- npm ci --cache .npm --prefer-offline
prepare:
stage: prepare
needs: []
script:
- npm install
test:
stage: test
needs: [prepare]
except:
- schedules
tags:
- linux
script:
- npm run build:dev
- npm run test:cicd-deps
- npm run test:cicd # runs puppeteer tests #jkr
artifacts:
reports:
junit: junit.xml
paths:
- coverage/
build-staging:
stage: build
needs: [prepare]
only:
- schedules
before_script:
- apt-get update && apt-get install -y zip
script:
- npm run build:stage
- zip -r build.zip build
# cache:
# paths:
# - build
# <<: *global_cache
# policy: push
artifacts:
paths:
- build.zip
deploy-dev:
stage: deploy
needs: [build-staging]
tags: [linux]
only:
- schedules
# # - branches#gitlab-org/gitlab
before_script:
- apt-get update && apt-get install -y lftp
script:
# temporarily using 'verify-certificate no'
# for more on verify-certificate #jkr: https://www.versatilewebsolutions.com/blog/2014/04/lftp-ftps-and-certificate-verification.html
# variables do not work with 'single quotes' unless they are "'surrounded by doubles'"
- lftp -e "set ssl:verify-certificate no; open mediajackagency.com; user $LFTP_USERNAME $LFTP_PASSWORD; mirror --reverse --verbose build/ /var/www/domains/dev/clients/client/project/build/; bye"
# environment:
# name: staging
# url: http://dev.mediajackagency.com/clients/client/build
# # url: https://stg2.client.co
when: manual
allow_failure: true
build-production:
stage: build
needs: [prepare]
only:
- schedules
before_script:
- apt-get update && apt-get install -y zip
script:
- npm run build
- zip -r build.zip build
# cache:
# paths:
# - build
# <<: *global_cache
# policy: push
artifacts:
paths:
- build.zip
deploy-client:
stage: deploy
needs: [build-production]
tags: [linux]
only:
- schedules
# - master
before_script:
- apt-get update && apt-get install -y lftp
script:
- sh deploy-prod
environment:
name: production
url: http://www.client.co
when: manual
allow_failure: true
The idea is to keep check commands outside of .gitlab-ci.yml. I use Makefile to run something like make check and my .gitlab-ci.yml runs the same make commands that I use locally to check various things before committing.
This way you'll have one place with all/most of your commands (Makefile) and .gitlab-ci.yml will have only CI-related stuff.
I have written a tool to run all GitLab-CI job locally without have to commit or push, simply with the command ci-toolbox my_job_name.
The URL of the project : https://gitlab.com/mbedsys/citbx4gitlab
Years ago I build this simple solution with Makefile and docker-compose to run the gitlab runner in docker, you can use it to execute jobs locally as well and should work on all systems where docker works:
https://gitlab.com/1oglop1/gitlab-runner-docker
There are few things to change in the docker-compose.override.yaml
version: "3"
services:
runner:
working_dir: <your project dir>
environment:
- REGISTRATION_TOKEN=<token if you want to register>
volumes:
- "<your project dir>:<your project dir>"
Then inside your project you can execute it the same way as mentioned in other answers:
docker exec -it -w $PWD runner gitlab-runner exec <commands>..
I recommend using gitlab-ci-local
https://github.com/firecow/gitlab-ci-local
It's able to run specific jobs as well.
It's a very cool project and I have used it to run simple pipelines on my laptop.

Docker-compose running multiple scripts

I'm using docker-compose and a yml file to start up a container. There are two scripts in the package.json I want to call:
"dev-start": "nodemon src/index.js",
"dev-migrate": "db-migrate --migrations-dir src/migrations --config src/database.json up"
For calling one I use command:script name, how can I call more than one script?
If you want to launch a migration while the application is running, use docker exec -it name-of-container bash to open a shell in the running container and execute the command.
If you need to run the migration before the first launch of the application, run docker-compose run name-of-service bash, run the command that initialize the database, exit and launch docker-compose normally.
If you want to run the migrations before each launch of the application, you could write a shell script that performs both actions (migration, then launch the application) copy it in the image and call it as your default command.
For the 2 first paragraphs, you could also directly launch the migration command instead of running bash
In my opinion it's the better practice to divide your migrations and server.
I always do it like I have two services one for running my server and one for migrating data into my database And if you think it makes sense to separate them as they are doing two different jobs.
services:
migrate:
build: .
command: db-migrate --migrations-dir src/migrations --config src/database.json up
depends_on:
- db
env_file:
- .env
web:
build: .
command: nodemon src/index.js
ports:
- 8000:8000
env_file:
- .env
depends_on:
- db
- migrate
db:
image: postgres:12.0-alpine
volumes:
- postgres_data:/var/lib/postgresql/data/