Tooling for building and developing against Agones, with only dependencies being Make and Docker
Rather than installing all the dependencies locally, you can test and build Agones using the Docker image that is built from the Dockerfile in this directory. There is an accompanying Makefile for all the common tasks you may wish to accomplish.
- Building on Different Platforms
- GOPATH
- Testing and Building
- Make Variable Reference
- Make Target Reference
- Development Targets
- make build
- make build-images
- make build-sdks
- make build-sdk
- make run-sdk-conformance-tests
- make clean-sdk-conformance-tests
- make test
- make push
- make install
- make uninstall
- make test-e2e
- make test-e2e-integration
- make test-e2e-failure
- make setup-prometheus
- make setup-grafana
- make prometheus-portforward
- make grafana-portforward
- make controller-portforward
- make pprof-cpu-web
- make pprof-heap-web
- make shell
- make godoc
- make build-controller-image
- make build-agones-sdk-image
- make gen-install
- make gen-embedded-openapi
- make gen-crd-client
- make gen-sdk-grpc
- Build Image Targets
- Google Cloud Platform
- Minikube
- make minikube-test-cluster
- make minikube-push
- make minikube-install
- make minikube-setup-prometheus
- make minikube-setup-grafana
- make minikube-prometheus-portforward
- make minikube-grafana-portforward
- make minikube-test-e2e
- make minikube-shell
- make minikube-transfer-image
- make minikube-controller-portforward
- Kind
- Development Targets
- Dependencies
- Troubleshooting
- Install Make, either via
apt install make
oryum install make
depending on platform. - Install Docker for your Linux platform.
Building and developing Agones requires you to use the Windows Subsystem for Linux(WSL), as this makes it easy to create a (relatively) cross platform development and build system.
- Install WSL
- Preferred release is Ubuntu 16.04 or greater.
- Install Docker for Windows
- Within WSL, Install Docker for Ubuntu
- Follow this guide
from "Configure WSL to Connect to Docker for Windows" forward
for integrating the Docker on WSL with the Windows Docker installation
- Note the binding of
/c
to/mnt/c
(or drive of your choice) - this is very important!
- Note the binding of
- Agones will need to be cloned somewhere on your
/c
(or drive of your choice) path, as that is what Docker will support mounts from - All interaction with Agones must be on the
/c
(or drive of your choice) path, otherwise Docker mounts will not work - Now the
make
commands can all be run from within your WSL shell - The Minikube setup on Windows has not been tested. Pull Requests would be appreciated!
- Install Make,
brew install make
, if it's not installed already - Install Docker for Mac
This project should be cloned to the directory $GOPATH/src/agones.dev/agones
for when you are developing locally, and require package resolution in your IDE.
If you have a working Go environment, you can also do this through:
go get -d agones.dev/agones
cd $GOPATH/src/agones.dev/agones
This is not required if you are simply building using the make
targets, and do not plan to edit the code
in an IDE.
If you are not familiar with GOPATHs, you can read How to Write Go Code.
Make sure you are in the build
directory to start.
First, let's test the Agones system code. To do this, run make test-go
, which will execute all the unit tests for
the Go codebase (there are other tests, but they can take a long time to run).
If you haven't run any of Make targets before then this will also create the Docker based build image, and then run the tests.
Building the build image may take a few minutes to download all the dependencies, so feel free to make cup of tea or coffee at this point. ☕️
Note: If you get build errors and you followed all the instructions so far, consult the Troubleshooting section
The build image is only created the first time one of the make targets is executed, and will only rebuild if the build Dockerfile has changed.
Assuming that the tests all pass, let's go ahead an compile the code and build the Docker images that Agones consists of.
Let's compile and build everything, by running make build
, this will:
- Compile the Agones Kubernetes integration code
- Create the Docker images that we will later push
- Build the local development tooling for all supported OS's
- Compile and archive the SDKs in various languages
You may note that docker images, and tar archives are tagged with a concatenation of the upcoming release number and short git hash for the current commit. This has also been set in the code itself, so that it can be seen in via log statements.
If you don't have a long time to wait, you can run make build-images
to only build the images for running Agones
, which is often all you need for development.
Congratulations! You have now successfully tested and built Agones!
This will setup a test GKE cluster on Google Cloud, with firewall rules set for each of the nodes for ports 7000-8000 to be open to UDP traffic.
First step is to create a Google Cloud Project at https://console.cloud.google.com or reuse an existing one.
The build tools (by default) maintain configuration for gcloud within the build
folder, so as to keep
everything separate (see below for overwriting these config locations). Therefore, once the project has been created,
we will need to authenticate out gcloud tooling against it. To do that run make gcloud-init
and fill in the
prompts as directed.
Once authenticated, to create the test cluster, run make gcloud-test-cluster
, which will use the Terraform
configuration found in the build/terraform/gke
directory.
You can customize GKE cluster via environment variables or by using a local-includes
file.
See the table below for available customizations :
Parameter | Description | Default |
---|---|---|
GCP_CLUSTER_NAME |
The name of the cluster | test-cluster |
GCP_CLUSTER_ZONE |
The name of the Google Compute Engine zone in which the cluster will resides. | us-west1-c |
GCP_CLUSTER_NODEPOOL_INITIALNODECOUNT |
The number of nodes to create in this cluster. | 4 |
GCP_CLUSTER_NODEPOOL_MACHINETYPE |
The name of a Google Compute Engine machine type. | e2-standard-4 |
GCP_CLUSTER_NODEPOOL_WINDOWSINITIALNODECOUNT |
The number of Windows nodes to create in this cluster. | 0 |
GCP_CLUSTER_NODEPOOL_WINDOWSMACHINETYPE |
The name of a Google Compute Engine machine type for Windows nodes. | e2-standard-4 |
If you would like to change more settings, feel free to edit the cluster.yml.jinja
file before running this command.
This will take several minutes to complete, but once done you can go to the Google Cloud Platform console and see that a cluster is up and running!
To grab the kubectl authentication details for this cluster, run make gcloud-auth-cluster
, which will generate the
required Kubernetes security credentials for kubectl
. This will be stored in ~/.kube/config
by default, but can also be
overwritten by setting the KUBECONFIG
environment variable before running the command.
Great! Now we are setup, let's try out the development shell, and see if our kubectl
is working!
Run make shell
to enter the development shell. You should see a bash shell that has you as the root user.
Enter kubectl get pods
and press enter. You should see that you have no resources currently, but otherwise see no errors.
Assuming that all works, let's exit the shell by typing exit
and hitting enter, and look at building, pushing and
installing Agones next.
To prepare building and pushing images, let's set the REGISTRY environment variable to point to our new project.
You can choose any registry region
but for this example, we'll just use gcr.io
.
In your shell, run export REGISTRY=gcr.io/<YOUR-PROJECT-ID>
which will overwrite the default registry settings in our
Make targets. Then, to rebuild our images for this registry, we run make build
again.
Before we can push the images, there is one more small step! So that we can run regular docker push
commands
(rather than gcloud docker -- push
), we have to authenticate against the registry, which will give us a short
lived key for our local docker config. To do this, run make gcloud-auth-docker
, and now we have the short lived tokens.
To push our images up at this point, is simple make push
and that will push up all images you just built to your
project's container registry.
Now that the images are pushed, to install the development version (with all imagePolicies set to always download),
run make install
and Agones will install the image that you just built and pushed on the test cluster you
created at the beginning of this section. (if you want to see the resulting installation yaml, you can find it in build/.install.yaml
)
Finally to run end-to-end tests against your development version previously installed in your test cluster run make test-e2e
, this will validate the whole application flow (from start to finish). If you're curious about how they work head to tests/e2e
When your are finished, you can run make clean-gcloud-test-cluster
to tear down your cluster.
This will setup a Minikube cluster, running on an agones
profile,
Because Minikube runs on a virtualisation layer on the host (usually Docker), some of the standard build and development Make targets need to be replaced by Minikube specific targets.
First, install Minikube.
Next we will create the Agones Minikube cluster. Run make minikube-test-cluster
to create the agones
profile,
and a Kubernetes cluster of the supported version under this profile.
This will also install the kubectl authentication credentials in ~/.kube
, and set the
kubectl
context
to agones
.
Great! Now we are setup, let's try out the development shell, and see if our kubectl
is working!
Run make minikube-shell
to enter the development shell. You should see a bash shell that has you as the root user.
Enter kubectl get pods
and press enter. You should see that you have no resources currently, but otherwise see no errors.
Assuming that all works, let's exit the shell by typing exit
and hitting enter, and look at a building, pushing and
installing Agones on Minikube next.
You may remember in the first part of this walkthrough, we ran make build
, which created all the images and binaries
we needed to work with Agones locally. We can push these images them straight into Minikube very easily!
Run make minikube-push
which will send all of Agones's docker images from your local Docker into the Agones Minikube
instance.
Now that the images are pushed, to install the development version,
run make minikube-install
and Agones will install the images that you built and pushed to the Agones Minikube instance
(if you want to see the resulting installation yaml, you can find it in build/.install.yaml
).
It's worth noting that Minikube does let you reuse its Docker daemon, and build directly on Minikube, but in this case this approach is far simpler, and makes cross-platform support for the build system much easier.
To push your own images into the cluster, take a look at Minikube's Pushing Images guide.
Running end-to-end tests on Minikube is done via the make minikube-test-e2e
target. This target use the same make test-e2e
but also setup some prerequisites for use with a Minikube cluster.
This will setup a Kubernetes IN Docker cluster named agones by default.
Because Kind runs on a docker on the host, some of the standard build and development Make targets need to be replaced by kind specific targets.
First, install Kind.
Next we will create the Agones Kind cluster. Run make kind-test-cluster
to create the agones
Kubernetes cluster.
This will also setup helm and a kubeconfig, the kubeconfig location can found using the following command kind get kubeconfig-path --name=agones
assuming you're using the default KIND_PROFILE
.
You can verify that your new cluster information by running (if you don't have kubectl you can skip to the shell section):
KUBECONFIG=$(kind get kubeconfig-path --name=agones) kubectl cluster-info
Great! Now we are setup, we also provide a development shell with a handful set of tools like kubectl and helm.
Run make kind-shell
to enter the development shell. You should see a bash shell that has you as the root user.
Enter kubectl get pods
and press enter. You should see that you have no resources currently, but otherwise see no errors.
Assuming that all works, let's exit the shell by typing exit
and hitting enter, and look at a building, pushing and installing Agones on Kind next.
You may remember in the first part of this walkthrough, we ran make build
, which created all the images and binaries
we needed to work with Agones locally. We can push these images them straight into kind very easily!
Run make kind-push
which will send all of Agones's docker images from your local Docker into the Agones Kind container.
Now that the images are pushed, to install the development version,
run make kind-install
and Agones will install the images that you built and pushed to the Agones Kind cluster.
Running end-to-end tests on Kind is done via the make kind-test-e2e
target. This target use the same make test-e2e
but also setup some prerequisites for use with a Kind cluster.
If you are having performance issues, check out these docs here
This section is addressed to developers using a custom Kubernetes provider, a custom image repository and/or multiple test clusters.
Prerequisites:
- a(some) running k8s cluster(s)
- Have kubeconfig file(s) ready
- docker must be logged into the image repository you're going to use
To begin, you need to set up the following environment variables:
KUBECONFIG
should point to the kubeconfig file used to access the cluster; if unset, it defaults to~/.kube/config
REGISTRY
should point to your image repository of your choice (i.e. gcr.io/)IMAGE_PULL_SECRET
must contain the name of the secret required to pull the Agones images, in case you're using a custom repository; if unset, no pull secret will be usedIMAGE_PULL_SECRET_FILE
must be initialized to the full path of the file containing the secret for pulling the Agones images, in case of a custom image repository; if set,make install
will install this secret in both theagones-system
(for pulling the controller image) anddefault
(for pulling the sdk image) repositories
Now you're ready to begin the development/test cycle:
make build
will build Agonesmake test
will run local tests, which includessite-test
targetmake push
will push the Agones images to your image repositorymake install
will install/upgrade Agones into your clustermake test-e2e
will run end-to-end tests in your cluster
You can combine some of the above steps into a single one, for example make build push install
or make build push test-e2e
.
If you need to clean-up your cluster, you can use make uninstall
to remove Agones and make clean-custom-test-cluster
to reset helm.
Have a look in the examples folder to see examples of running Game Servers on Agones.
The version of this build. Version defaults to the short hash of the latest commit.
The registry that is being used to store docker images. Defaults to gcr.io/agones-images - the release + CI registry.
The Kubernetes config file used to access the cluster. Defaults to ~/.kube/config
- the file used by default by kubectl.
The (gcloud) test cluster that is being worked against. Defaults to test-cluster
.
Your GCP project for deploying GKE cluster. Defaults to gcloud default project settings.
If specified basic authentication would be enabled for your cluster with username "admin".
Empty string ""
would disable basic authentication.
The name of the secret required to pull the Agones images, if needed. If unset, no pull secret will be used.
The full path of the file containing the secret for pulling the Agones images, in case it's needed.
If set, make install
will install this secret in both the agones-system
(for pulling the controller image)
and default
(for pulling the sdk image) repositories.
Build Windows container images for Agones.
This option is enabled by default via implicit make WITH_WINDOWS=1 build-images
.
To disable, use make WITH_WINDOWS=0 build-images
.
List of Windows Server versions to build for. Defaults to ltsc2019
for Windows Server 2019.
See https://hub.docker.com/_/microsoft-windows-servercore for all available Windows versions.
All targets will create the build image if it is not present.
Targets for developing with the build image.
Build all the images required for Agones, as well as the SDKs
Build all the images required for Agones
Build all the sdks required for Agones
Next command make build-sdk SDK_FOLDER=[SDK_TYPE]
will build SDK of SDK_TYPE
.
For instance, in order to build the cpp sdk static and dynamic libraries (linux libraries only) use SDK_FOLDER=cpp
Run Agones sidecar which would wait for all requests from the SDK client. Note that annotation should contain UID and label should contain CreationTimestamp values to pass the test.
Only run a conformance test for a specific Agones SDK.
Build, run and clean conformance test for a specific Agones SDK.
Run SDK conformance test. Run SDK server (sidecar) in test mode (which would record all GRPC requests) versus all SDK test clients which should generate those requests. All methods are verified.
Clean leftover binary and package files after running SDK conformance tests.
Run the linter and tests
Run make build
for all examples
subdirectories
Generate https://agones.dev
website locally and host on http://localhost:1313
Check the links in a website
Check the links in a website, includes test-gen-api-docs
target
Create all the site images from dot and puml diagrams in /site/static/diagrams
Generate Agones CRD reference documentation Agones CRD API reference. Set feature
shortcode with proper version automatically
Verifies that there is no changes in generated Agones CRD API reference compared to the current one (useful for CI)
Pushes all built images up to the $(REGISTRY)
Installs the current development version of Agones into the Kubernetes cluster
Removes Agones from the Kubernetes cluster
Updates the Agones installation with the IP of the Allocation LoadBalancer, thereby creating a valid certificate for the Allocation gRPC endpoints.
The certificates are downloaded from the test kubernetes cluster and stored in ./build/allocation
Runs end-to-end tests on the previously installed version of Agones. These tests validate Agones flow from start to finish.
It uses the KUBECONFIG to target a Kubernetes cluster.
Use GAMESERVERS_NAMESPACE
flag to provide a namespace or leave it empty in order to create and use a random one.
See make minikube-test-e2e
to run end-to-end tests on Minikube.
Runs integration portion of the end-to-end tests.
Pass flags to go test command
using the ARGS
parameter. For example, to run only the TestGameServerReserve
test:
make test-e2e-integration ARGS='-run TestGameServerReserve'
Run controller failure portion of the end-to-end tests.
Install Prometheus server using Prometheus Community chart into the current cluster.
By default all exporters and alertmanager is disabled.
You can use this to collect Agones Metrics.
See make minikube-setup-prometheus
and make kind-setup-prometheus
to run the installation on Minikube or Kind.
Run helm repo update to get the mose recent charts.
Install Grafana server using grafana community chart into the current cluster and setup Agones dashboards with Prometheus datasource.
You can set your own password using the PASSWORD
environment variable.
See make minikube-setup-grafana
and make kind-setup-grafana
to run the installation on Minikube or Kind.
Sets up port forwarding to the Prometheus deployment (port 9090 Prometheus UI).
On Windows and MacOS you will need to have installed kubectl.
See make minikube-prometheus-portforward
and make kind-prometheus-portforward
to run on Minikube or Kind.
Sets up port forwarding to the grafana deployment (port 3000 UI).
On Windows and MacOS you will need to have installed kubectl.
See make minikube-grafana-portforward
and make kind-grafana-portforward
to run on Minikube or Kind.
Sets up port forwarding to a specified PORT var (defaults to 8080 for controller metrics) to the controller deployment.
Start the web interface for pprof for cpu profiling.
Start the web interface for pprof for heap profiling.
Run a bash shell with the developer tools (go tooling, kubectl, etc) and source code in it.
Run a container with godoc (search index enabled)
Compile the gameserver controller and then build the docker image
Compile the gameserver sidecar and then build the docker image
Compile the ping binary and then build the docker image
Generate the /install/yaml/install.yaml
from the Helm template
Generate the embedded OpenAPI specs for existing Kubernetes Objects, such as PodTemplateSpec
and ObjectMeta
Generate the Custom Resource Definition client(s)
Generate the SDK gRPC server and client code
Targets for building the build image
Cleans the kubernetes and gcloud configurations
Deletes the local build docker image
Creates the build docker image
A set of utilities for setting up a Kubernetes Engine cluster on Google Cloud Platform, since it's an easy way to get a test cluster working with Kubernetes.
Initialise the gcloud login and project configuration, if you are working with GCP.
Creates and authenticates a GKE cluster to work against.
Delete a GKE cluster previously created with make gcloud-test-cluster
.
Pulls down authentication information for kubectl against a cluster, name can be specified through CLUSTER_NAME (defaults to 'test-cluster').
Creates a short lived access to Google Cloud container repositories, so that you are able to call
docker push
directly. Useful when used in combination with make push
command.
Utilities for deploying a Kubernetes Engine cluster on Google Cloud Platform using google
Terraform provider.
Create GKE cluster and install release version of agones. Run next command to create GKE cluster with agones (version from helm repository):
[GKE_PASSWORD="<YOUR_PASSWORD>"] make gcloud-terraform-cluster
Where <YOUR_PASSWORD>
should be at least 16 characters in length. You can omit GKE_PASSWORD and then basic auth would be disabled. Also you change ports="7000-8000"
setting using tfvars file.
Also you can define password password=<YOUR_PASSWORD>
string in build/terraform.tfvars
.
Change AGONES_VERSION to a specific version you want to install.
Create GKE cluster and install current version of agones. The current version should be built and pushed to release_registry beforehand:
make build-images
make push
Run terraform destroy
on your cluster.
Remove .terraform directory with configs as well as tfstate files.
Run Golang test which emulates and verifies successful execution of next two steps:
make gcloud-terraform-cluster
make gcloud-terraform-destroy-cluster
Singleton, could not be executed in parallel with itself. As it uses the one terraform tfstate file.
A set of utilities for setting up and running a Minikube instance, for local development.
Since Minikube runs locally, there are some targets that need to be used instead of the standard ones above.
Switches to an "agones" profile, and starts a kubernetes cluster of the right version. Uses "docker" as the default driver.
If needed, use MINIKUBE_DRIVER variable to change the VM driver.
Installs the current development version of Agones into the Kubernetes cluster.
Use this instead of make install
, as it disables PullAlways on the install.yaml
Push the local Agones Docker images that have already been built
via make build
or make build-images
into the "agones" minikube instance with minikube cache add
Installs prometheus metric backend into the Kubernetes cluster.
Use this instead of make setup-prometheus
, as it disables Persistent Volume Claim.
Installs grafana into the Kubernetes cluster.
Use this instead of make setup-grafana
, as it disables Persistent Volume Claim.
The minikube version of make prometheus-portforward
to setup
port forwarding to the prometheus deployment.
The minikube version of make grafana-portforward
to setup
port forwarding to the grafana deployment.
Runs end-to-end tests on the previously installed version of Agones. These tests validate Agones flow from start to finish.
Connecting to Minikube requires so enhanced permissions, so use this target
instead of make shell
to start an interactive shell for development on Minikube.
The minikube version of make controller-portforward
to setup
port forwarding to the controller deployment.
Kind - kubernetes in docker is a tool for running local Kubernetes clusters using Docker container "nodes".
Since Kind runs locally, there are some targets that need to be used instead of the standard ones above.
Starts a local kubernetes cluster, you can delete it with make kind-delete-cluster
Use KIND_PROFILE variable to change the name of the cluster.
Push the local Agones Docker images that have already been built
via make build
or make build-images
into the "agones" Kind cluster.
Installs the current development version of Agones into the Kubernetes cluster.
Use this instead of make install
, as it disables PullAlways on the install.yaml
Installs prometheus metric backend into the Kubernetes cluster.
Use this instead of make setup-prometheus
, as it disables Persistent Volume Claim.
Installs grafana into the Kubernetes cluster.
Use this instead of make setup-grafana
, as it disables Persistent Volume Claim.
The minikube version of make prometheus-portforward
to setup
port forwarding to the prometheus deployment.
The minikube version of make grafana-portforward
to setup
port forwarding to the grafana deployment.
Runs end-to-end tests on the previously installed version of Agones. These tests validate Agones flow from start to finish.
Connecting to Kind requires so enhanced permissions, so use this target
instead of make shell
to start an interactive shell for development on Kind.
The Kind version of make controller-portforward
to setup
port forwarding to the controller deployment.
This project uses the go modules as its manager. You can see the list of dependencies here.
Agones uses module vendoring to reliably produce versioned builds with consistent behavior.
Adding a new dependency to Agones:
go mod tidy
This will import your new deps into the go.mod file and trim out any removed dependencies.go mod vendor
Pulls module code into the vendor directory.
Sometimes the code added to vendor may not include a subdirectory that houses code being used but not as an import (protos passed as args to scripts is a good example). In this case you can go into the module cache and copy what you need to the path in vendor.
Here is an example for getting third_party from grpc-ecosystem/grpc-gateway v1.5.1 into vendor:
- AGONES_PATH=/wherever/your/agones/path/is
- cp -R $GOPATH/pkg/mod/github.com/grpc-ecosystem/[email protected]/third_party $AGONES_PATH/vendor/github.com/grpc-ecosystem/grpc-gateway/
Note the version in the pathname. Go may eliminate the need to do this in future versions.
We also use vendor to hold code patches while waiting for the project to release the fixes in their own code. An example is in k8s.io/apimachinery where a fix will be released later this year, but we updated our own vendored version in order to fix the issue sooner.
Frequent issues and possible solutions
If you get this error when building Agones in WSL (make build
, make test
or any other related target):
/usr/local/go/src/agones.dev/agones/cmd/controller (from $GOROOT)
/go/src/agones.dev/agones/cmd/controller (from $GOPATH)
- Are your project files on a different folder than C? If yes, then you should either move them on drive C or set up Docker for Windows to share your project drive as well
- Did you set up the volume mount for Docker correctly? By default, drive C is mapped by WSL as /mnt/c, but Docker expects it as /c. You can test by executing
ls /c
in your linux shell. If you get an error, then follow the instructions for setting up volume mount for Docker
This surfaces while running make gcloud-auth-cluster
. The solution is to run kubectl describe clusterrolebinding | grep cluster-admin-binding- -A10
, find clusterrolebinding which belongs to your User
account and then run kubectl delete clusterrolebindings cluster-admin-binding-<md5Hash>
where <md5Hash>
is a value specific to your account. Now you can execute make gcloud-auth-cluster
again. If you run into a permission denied error when attempting the delete operation, you need to run sudo chown <your username> <path to .kube/config>
to change ownership of the file to yourself.
Run make uninstall
then run make install
again.
Run make build-images GO_BUILD_TAGS=profile
and this will build images with pprof
enabled in the controller, which you can then push and install on your cluster.
To get the pprof ui working, run make controller-portforward PORT=6060
(or minikube-controller-portforward PORT=6060
if you are on minikube),
which will setup the port forwarding to the pprof http endpoint.
To view CPU profiling, run make pprof-cpu-web
, which will start the web interface with a CPU usage graph
on http://localhost:6061.
To view heap metrics, run make pprof-heap-web
, which will start the web interface with a Heap usage graph.
on http://localhost:6062.