---
title: Test your Rust deployment
linkTitle: Test your deployment
weight: 50
keywords: deploy, kubernetes, rust
description: Learn how to test your Rust deployment locally using Kubernetes
aliases:
- /language/rust/deploy/
- /guides/language/rust/deploy/
---
## Prerequisites
- Complete the previous sections of this guide, starting with [Develop your Rust application](develop.md).
- [Turn on Kubernetes](/manuals/desktop/features/kubernetes.md#install-and-turn-on-kubernetes) in Docker Desktop.
## Overview
In this section, you'll learn how to use Docker Desktop to deploy your application to a fully-featured Kubernetes environment on your development machine. This lets you to test and debug your workloads on Kubernetes locally before deploying.
## Create a Kubernetes YAML file
In your `docker-rust-postgres` directory, create a file named
`docker-rust-kubernetes.yaml`. Open the file in an IDE or text editor and add
the following contents. Replace `DOCKER_USERNAME/REPO_NAME` with your Docker
username and the name of the repository that you created in [Configure CI/CD for
your Rust application](configure-ci-cd.md).
```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
service: server
name: server
namespace: default
spec:
replicas: 1
selector:
matchLabels:
service: server
strategy: {}
template:
metadata:
labels:
service: server
spec:
initContainers:
- name: wait-for-db
image: busybox:1.28
command:
[
"sh",
"-c",
'until nc -zv db 5432; do echo "waiting for db"; sleep 2; done;',
]
containers:
- image: DOCKER_USERNAME/REPO_NAME
name: server
imagePullPolicy: Always
ports:
- containerPort: 8000
hostPort: 5000
protocol: TCP
env:
- name: ADDRESS
value: 0.0.0.0:8000
- name: PG_DBNAME
value: example
- name: PG_HOST
value: db
- name: PG_PASSWORD
value: mysecretpassword
- name: PG_USER
value: postgres
- name: RUST_LOG
value: debug
resources: {}
restartPolicy: Always
status: {}
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
service: db
name: db
namespace: default
spec:
replicas: 1
selector:
matchLabels:
service: db
strategy:
type: Recreate
template:
metadata:
labels:
service: db
spec:
containers:
- env:
- name: POSTGRES_DB
value: example
- name: POSTGRES_PASSWORD
value: mysecretpassword
- name: POSTGRES_USER
value: postgres
image: postgres
name: db
ports:
- containerPort: 5432
protocol: TCP
resources: {}
restartPolicy: Always
status: {}
---
apiVersion: v1
kind: Service
metadata:
labels:
service: server
name: server
namespace: default
spec:
type: NodePort
ports:
- name: "5000"
port: 5000
targetPort: 8000
nodePort: 30001
selector:
service: server
status:
loadBalancer: {}
---
apiVersion: v1
kind: Service
metadata:
labels:
service: db
name: db
namespace: default
spec:
ports:
- name: "5432"
port: 5432
targetPort: 5432
selector:
service: db
status:
loadBalancer: {}
```
In this Kubernetes YAML file, there are four objects, separated by the `---`. In addition to a Service and Deployment for the database, the other two objects are:
- A Deployment, describing a scalable group of identical pods. In this case,
you'll get just one replica, or copy of your pod. That pod, which is
described under `template`, has just one container in it. The container is
created from the image built by GitHub Actions in [Configure CI/CD for your
Rust application](configure-ci-cd.md).
- A NodePort service, which will route traffic from port 30001 on your host to
port 5000 inside the pods it routes to, allowing you to reach your app
from the network.
To learn more about Kubernetes objects, see the [Kubernetes documentation](https://kubernetes.io/docs/home/).
## Deploy and check your application
1. In a terminal, navigate to `docker-rust-postgres` and deploy your application
to Kubernetes.
```console
$ kubectl apply -f docker-rust-kubernetes.yaml
```
You should see output that looks like the following, indicating your Kubernetes objects were created successfully.
```shell
deployment.apps/server created
deployment.apps/db created
service/server created
service/db created
```
2. Make sure everything worked by listing your deployments.
```console
$ kubectl get deployments
```
Your deployment should be listed as follows:
```shell
NAME READY UP-TO-DATE AVAILABLE AGE
db 1/1 1 1 2m21s
server 1/1 1 1 2m21s
```
This indicates all of the pods you asked for in your YAML are up and running. Do the same check for your services.
```console
$ kubectl get services
```
You should get output like the following.
```shell
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
db ClusterIP 10.105.167.81 <none> 5432/TCP 109s
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 9d
server NodePort 10.101.235.213 <none> 5000:30001/TCP 109s
```
In addition to the default `kubernetes` service, you can see your `service-entrypoint` service, accepting traffic on port 30001/TCP.
3. In a terminal, curl the service.
```console
$ curl http://localhost:30001/users
[{"id":1,"login":"root"}]
```
4. Run the following command to tear down your application.
```console
$ kubectl delete -f docker-rust-kubernetes.yaml
```
## Summary
In this section, you learned how to use Docker Desktop to deploy your application to a fully-featured Kubernetes environment on your development machine.
Related information:
- [Kubernetes documentation](https://kubernetes.io/docs/home/)
- [Deploy on Kubernetes with Docker Desktop](/manuals/desktop/features/kubernetes.md)
- [Swarm mode overview](/manuals/engine/swarm/_index.md)