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Client-Only Developer Tool for Cloud-Native Development with Kubernetes

• Build, test and debug applications directly inside Kubernetes
• Develop with hot reloading: updates your running containers without rebuilding images or restarting containers
• Unify deployment workflows within your team and across dev, staging and production
• Automate repetitive tasks for image building and deployment

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Contents

• Why DevSpace?
• Architecture & Workflow
• Features
• Quickstart Guide
• Config Examples
• Troubleshooting
• Contributing
• FAQ

Why DevSpace?

Building modern, distributed and highly scalable microservices with Kubernetes is hard - and it is even harder for large teams of developers. DevSpace is the next-generation tool for fast cloud-native software development.

Standardize & Version Your Workflows

DevSpace allows you to store all your workflows in one declarative config file: devspace.yaml

• Codify workflow knowledge about building images, deploying your project and its dependencies etc.
• Version your workflows together with your code (i.e. you can get any old version up and running with just a single command)
• Share your workflows with your team mates

Let Everyone on Your Team Deploy to Kubernetes

DevSpace helps your team to standardize deployment and development workflows without requiring everyone on your team to become a Kubernetes expert.

• The DevOps and Kubernetes expert on your team can configure DevSpace using devspace.yaml and simply commits it via git
• If other developers on your team check out the project, they only need to run devspace deploy to deploy the project (including image building and deployment of other related project etc.) and they have a running instance of the project
• The configuration of DevSpace is highly dynamic, so you can configure everything using config variables that make it much easier to have one base configuration but still allow differences among developers (e.g. different sub-domains for testing)

Giving everyone on your team on-demand access to a Kubernetes cluster is a challenging problem for system administrators and infrastructure managers. If you want to efficiently share dev clusters for your engineering team, take a look at www.loft.sh.

Speed Up Cloud-Native Development

Instead of rebuilding images and redeploying containers, DevSpace allows you to hot reload running containers while you are coding:

• Simply edit your files with your IDE and see how your application reloads within the running container.
• The high performance, bi-directional file synchronization detects code changes immediately and synchronizes files immediately between your local dev environment and the containers running in Kubernetes
• Stream logs, connect debuggers or open a container terminal directly from your IDE with just a single command.

Automate Repetitive Tasks

Deploying and debugging services with Kubernetes requires a lot of knowledge and forces you to repeatedly run commands like kubectl get pod and copy pod ids back and forth. Stop wasting time and let DevSpace automate the tedious parts of working with Kubernetes:

• DevSpace lets you build multiple images in parallel, tag them automatically and and deploy your entire application (including its dependencies) with just a single command
• Let DevSpace automatically start port-fowarding and log streaming, so you don't have to constantly copy and paste pod ids or run 10 commands to get everything started.

Works with Any Kubernetes Clusters

DevSpace is battle tested with many Kubernetes distributions including:

• local Kubernetes clusters like minikube, k3s, MikroK8s, kind
• managed Kubernetes clusters in GKE (Google Cloud), EKS (Amazon Web Service), AKS (Microsoft Azure), Digital Ocean
• self-managed Kubernetes clusters created with Rancher

DevSpace also lets you switch seamlessly between clusters and namespaces. You can work with a local cluster as long as that is sufficient. If things get more advanced, you need cloud power like GPUs or you simply want to share a complex system such as Kafka with your team, simply tell DevSpace to use a remote cluster by switching your kube-context and continue working.

Architecture & Workflow

DevSpace runs as a single binary CLI tool directly on your computer and ideally, you use it straight from the terminal within your IDE. DevSpace does not require a server-side component as it communicates directly to your Kubernetes cluster using your kube-context, just like kubectl.

Features

Stop wasting time for running the same build and deploy commands over and over again. Let DevSpace automate your workflow and build cloud-native applications directly inside Kubernetes.

Automated Image Building with devspace build

• Customizable Build Process supporting Docker, kaniko or even custom scripts
• Parallel Image Building to save time when multiple Dockerfiles have to be built
• Automatic Image Tagging according to custom tag schema (e.g. using timestamp, commit hash or random strings)
• Automatic Push to any public or private Docker registry (authorization via docker login my-registry.tld)
• Automatic Configuration of Pull Secrets within the Kubernetes cluster
• Smart Caching that skips images which do not need to be rebuilt

Automated Deployment with devspace deploy

• Automatig Image Building for images required in the deployment process
• Customizable Deployment Process supporting kubectl, helm, kustomize and more
• Multi-Step Deployments to deploy multiple application components (e.g. 1. webserver, 2. database, 3. cache)
• Efficient Microservice Deployments by defining dependencies between projects (even across git repositories)
• Smart Caching that skips deployments which do not need to be redeployed
• Easy Integration into CI/CD Tools with non-interactive mode

Efficient In-Cluster Development with devspace dev

• Hot Reloading that updates your running containers without restarting them (whenever you change a line of code)
• Fast + Reliable File Synchronization to keep all files in sync between your local workspace and your containers
• Port Forwarding that lets you access services and pods on localhost and allows you to attach debuggers with ease
• Multi-Container Log Streaming that lets you stream the logs of multiple containers at once (+ color-coded prefix)
• Terminal Proxy that opens automatically and lets you run commands in your pods directly from your IDE terminal

Feature-Rich Localhost UI with devspace ui

• Graphical UI for streaming logs, opening interactive terminals, starting port-forwarding and more
• Runs 100% on localhost: uses current kube-context, no server-side installation required

Convenience Commands for Kubernetes

• Quick Pod Selection eliminates the need to copy & paste pod names, namespaces etc. » Shows a "dropdown selector" for pods directly in the CLI when running one of these commands:
  • devspace enter to open a Interactive Terminal Session
  • devspace logs / devspace logs -f for Fast, Real-Time Logs (optionally streaming new logs)
  • devspace sync for quickly starting a Bi-Directional, Real-Time File Synchronization on demand
• Automatic Issue Analysis via devspace analyze reporting crashed containers, missing endpoints, scheduling errors, ...
• Fast Deletion of Deployments using devspace purge (deletes all helm charts, manifests etc. defined in the config)
• Context Management via:
  • devspace use context shows a list of contexts (select to set current kube-context)
  • devspace use namespace shows a list of namespaces (select to set defaut namespace for current context)
  • devspace remove context shows a list of contexts (select to remove a kube-context)

Powerful Configuration

• Declarative Configuration File that can be versioned and shared just like the source code of your project (e.g. via git)
• Config Variables which allow you to parameterize the config and share a unified config file with your team
• Config Overrides for overriding Dockerfiles or ENTRYPOINTs (e.g. to separate development, staging and production)
• Hooks for executing custom commands before or after each build and deployment step
• Multiple Configs for advanced deployment scenarios

Lightweight & Easy to Setup

• Client-Only Binary (optional plugin for Loft for cluster sharing + multi-tenancy)
• Standalone Executable for all platforms with no external dependencies and fully written in Golang
• Automatic Config Generation from existing Dockerfiles, Helm chart or Kubernetes manifests (optional)
• Automatic Dockerfile Generation (optional)

Loft.sh Plugin for Easy Namespace & Virtual Cluster Provisioning

DevSpace provides a plugin for Loft which allows users to run command such as devspace create space or devspace create vcluster for creating namespaces and virtual Kubernetes clusters in shared dev clusters.

Loft is a server-side solution for Kubernetes multi-tenancy and efficient cluster sharing which provides:

• On-Demand Namespace Creation & Isolation with automatic RBAC, network policies, pod security policies etc.
• Graphical UI for managing clusters, cluster users and user permissions (resource limits etc.)
• Advanced Permission System that automatically enforces user limits via resource quotas, adminission controllers etc.
• Fully Automatic Context Configuration on the machines of all cluster users with secure access token handling
• 100% Pure Kubernetes and nothing else! Works with any Kubernetes cluster.

For more infos and install intructions for Loft, see Loft Documentation

Quickstart

1. Install DevSpace

via NPM

npm install -g devspace

via Yarn

yarn global add devspace

via brew

brew install devspace

via Mac Terminal

# AMD64 / Intel
curl -s -L "https://github.com/loft-sh/devspace/releases/latest" | sed -nE 's!.*"([^"]*devspace-darwin-amd64)".*!https://github.com\1!p' | xargs -n 1 curl -L -o devspace && chmod +x devspace;
sudo install devspace /usr/local/bin;

# ARM64 / Silicon Mac
curl -s -L "https://github.com/loft-sh/devspace/releases/latest" | sed -nE 's!.*"([^"]*devspace-darwin-arm64)".*!https://github.com\1!p' | xargs -n 1 curl -L -o devspace && chmod +x devspace;
sudo install devspace /usr/local/bin;

via Linux Bash

# AMD64
curl -s -L "https://github.com/loft-sh/devspace/releases/latest" | sed -nE 's!.*"([^"]*devspace-linux-amd64)".*!https://github.com\1!p' | xargs -n 1 curl -L -o devspace && chmod +x devspace;
sudo install devspace /usr/local/bin

# ARM64
curl -s -L "https://github.com/loft-sh/devspace/releases/latest" | sed -nE 's!.*"([^"]*devspace-linux-arm64)".*!https://github.com\1!p' | xargs -n 1 curl -L -o devspace && chmod +x devspace;
sudo install devspace /usr/local/bin

via Windows Powershell

md -Force "$Env:APPDATA\devspace"; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]'Tls,Tls11,Tls12';
Invoke-WebRequest -UseBasicParsing ((Invoke-WebRequest -URI "https://github.com/loft-sh/devspace/releases/latest" -UseBasicParsing).Content -replace "(?ms).*`"([^`"]*devspace-windows-amd64.exe)`".*","https://github.com/`$1") -o $Env:APPDATA\devspace\devspace.exe;
$env:Path += ";" + $Env:APPDATA + "\devspace";
[Environment]::SetEnvironmentVariable("Path", $env:Path, [System.EnvironmentVariableTarget]::User);

If you get the error that Windows cannot find DevSpace after installing it, you will need to restart your computer, so that the changes to the PATH variable will be applied.

2. Choose a Project

Project	Command
Node.js	git clone https://github.com/loft-sh/devspace-quickstart-nodejs && cd devspace-quickstart-nodejs
Python	git clone https://github.com/loft-sh/devspace-quickstart-python && cd devspace-quickstart-python
Java	git clone https://github.com/loft-sh/devspace-quickstart-java && cd devspace-quickstart-java
Ruby	git clone https://github.com/loft-sh/devspace-quickstart-ruby && cd devspace-quickstart-ruby
Golang	git clone https://github.com/loft-sh/devspace-quickstart-golang && cd devspace-quickstart-golang
PHP	git clone https://github.com/loft-sh/devspace-quickstart-php && cd devspace-quickstart-php
ASP.NET	git clone https://github.com/loft-sh/devspace-quickstart-asp-dotnet && cd devspace-quickstart-asp-dotnet

Want to use DevSpace with your own project?

cd /path/to/my/project/root

If you are using DevSpace for the first time, we recommend to get started with one of the demo projects listed above.

3. Initialize Your Project

Initializing a project will create the configuration file devspace.yaml which tells DevSpace how to deploy your project.

devspace init

4. Start Development

Tell DevSpace which namespace to use and start the development mode:

devspace use namespace my-namespace  # will be created by DevSpace if it does not exist
devspace dev

As soon as the terminal opens up, you can start your application:

# Node.js
npm start

# Python
python main.py

# Ruby
bundle exec rails server -p 3000 -b 0.0.0.0

# Golang
go run main.go

# Java
mvn package -T 1C -U -Dmaven.test.skip=true  # or: gradle build
java -jar target/.../my.jar

# .NET
dotnet run

# PHP
# Your app should be running already but you can still run:
php ...
composer ...

You can now:

• Access your application via http://localhost:PORT in your browser
• Edit your source code files and DevSpace will automatically synchronize them to the containers running in Kubernetes
• Use a hot reloading tool like nodemon and your application will automatically reload when you edit source code files

5. Open The Development UI

When running devspace dev, DevSpace starts a client-only UI for Kubernetes. You can see that in the output of devspace dev which should contain a log line similar to this one:

#########################################################
[info]   DevSpace UI available at: http://localhost:8090
#########################################################

By default, DevSpace starts the development UI on port 8090 but if the port is already in use, it will use a different port.

You can access the development UI once you:

• open the link from your devspace dev logs in the browser, e.g. http://localhost:8090
• run the command devspace ui (e.g. in a separate terminal parallel to devspace dev)

Once the UI is open in your browser, it will look similar to this screenshot:

Follow this guide to learn more about the functionalities of the DevSpace UI for Kubernetes development.

6. Deploy

Initializing a project will create the configuration file devspace.yaml which tells DevSpace how to deploy your project.

devspace deploy -p production

The -p / --profile flag tells DevSpace to apply a certain profile defined in your devspace.yaml. A profile changes the base configuration by, for example, applying config patches. This allows you to have one base configuration and adapt it for different deployment targets and environment (e.g. dev as base config and a profile for production).

Having issues? Take a look at the Troubleshooting Guides and learn how to fix common issues.

7. Learn more

Follow these links to more about how to use DevSpace:

• Onboarding Guide
• Config Reference
• How to troubleshoot common issues
• How to use the Localhost UI of DevSpace
• How to integrate DevSpace in your CI/CD pipeline

Useful Commands for Development

Command	Important Flags / Notes
devspace dev Starts the development mode	-b • Rebuild images (force) -d • Redeploy everything (force) -i • Interactive mode (overrides ENTRYPOINT with [sleep, 999999] and starts interactive terminal session)
devspace ui Opens the localhost development UI
devspace open Opens your application after starting port-forwarding or generating an ingress
devspace enter Opens a terminal session for a container
devspace enter -- [command] Runs a command inside a container
devspace logs Prints the logs of a container	-f • Stream logs (follow/attach)
devspace analyze Analyzes your namespace for issues
devspace build Build, tag and push images (no deploy)	-t [TAG] • Use specified [TAG] to tag all images
devspace cleanup images Deletes old images (locally, built by DevSpace)	This is very useful after you built a lot of images and your local Docker daemon runs out of space (error: no space left on device)
devspace attach Attaches to a running container	Requires stdin and tty to be true
devspace use namespace [NAME] Switch to a different namespace	If you do not provide a [NAME], DevSpace will show a selector with a list of available namespaces.
devspace use context [NAME] Switch to a different kube-context	If you do not provide a [NAME], DevSpace will show a selector with a list of available kube-contexts.

Configuration Examples

You can configure DevSpace with the devspace.yaml configuration file that should be placed within the root directory of your project. The general structure of a devspace.yaml looks like this:

# File: ./devspace.yaml
version: {config-version}

images:                 # DevSpace will build these images in parallel and push them to the respective registries
  {image-a}: ...        # tells DevSpace how to build image-a
  {image-b}: ...        # tells DevSpace how to build image-b
  ...

deployments:            # DevSpace will deploy these [Helm charts | manifests | ... ] one after another
  - {deployment-1}      # could be a Helm chart
  - {deployment-2}      # could be a folder with kubectl manifests
  ...

dev:                    # Special config options for `devspace dev`
  ports: ...            # Configure port-forwarding
  open: ...             # Configure auto-open for opening URLs after starting development mode
  sync: ...             # Configure file synchronization
  terminal: ...         # Customize the terminal to be opened
  logs: ...             # Configure multi-container log streaming
  replacePods: ...      # Replace pods during development mode
  autoReload: ...       # Tells DevSpace when to redeploy (e.g. when a manifest file has been edited)

dependencies:           # Tells DevSpace which related projects should be deployed before deploying this project
  - {dependency-1}      # Could be another git repository
  - {dependency-2}      # Could point to a path on the local filesystem
  ...

vars:                   # Make your config dynamic and easier to share (ask a question if env var is not defined)
  - name: DOMAIN_NAME   # Will be used as ${DOMAIN_NAME} in config
    question: Which hostname should we use for the ingress?

profiles:               # Configure different profiles (e.g. dev, staging, prod, debug-backend)
  - name: debug-backend
    patches:            # Change the config with patches when this profile is active
      - op: replace
        path: images.default.entrypoint
        value: [npm, run, debug]

commands:               # Custom commands: define reusable commands and run them via: devspace run [command-name]
  - name: debug-backend # The best way to share your workflows with other team mates
    command: devspace dev -i --profile=debug-backend

hooks:                  # Customize all workflows using hooks
  - command: echo
    args:
      - "before image building"
    when:
      before:
        images: all

See an example of a devspace.yaml config file

# File: ./devspace.yaml
version: v1beta10

images:
  backend:                              # Key 'backend' = Name of this image
    image: my-registry.tld/image1       # Registry and image name for pushing the image

deployments:
- name: database                        # A deployment for a postgresql database
  kubectl:                              # Deploy using kubectl
    manifests:
    - postgresql/statefulset.yaml
    - postgresql/service.yaml
- name: quickstart-nodejs               # A second deployment
  helm:                                 # Deploy using Helm
    chart:                              # Helm chart to be deployed
      name: component-chart             # DevSpace component chart is a general-purpose Helm chart
      version: 0.1.3
      repo: https://charts.devspace.sh
    values:                             # Override Values for chart (van also be set using valuesFiles option)
      containers:                       # Deploy these containers with this general-purpose Helm chart
      - image: my-registry.tld/image1   # Image of this container
        resources:
          limits:
            cpu: "400m"                 # CPU limit for this container
            memory: "500Mi"             # Memory/RAM limit for this container
      service:                          # Expose this component with a Kubernetes service
        ports:                          # Array of container ports to expose through the service
        - port: 3000                    # Exposes container port 3000 on service port 3000

dev:
  ports:
    imageName: backend
    forward:
    - port: 3000
    - port: 8080
      remotePort: 80
  open:
  - url: http://localhost:3000/login
  sync:
  - imageName: backend
    localSubPath: ./src
  terminal:
    imageName: backend
  replacePods:
  - imageName: backend
    replaceImage: loftsh/javascript:latest

dependencies:
- source:
    git: https://github.com/my-api-server
- source:
    path: ../my-auth-server

The following sections show code snippets with example sections of a devspace.yaml for certain use cases.

Configure Image Building

Build images with Docker

# File: ./devspace.yaml
images:
  auth-server:
    image: dockerhub-username/my-auth-server    # Push to Docker Hub (no registry hostname required) => uses ./Dockerfile by default
    createPullSecret: true                      # Create a Kubernetes pull secret for this image before deploying anything
  webserver:
    image: myregistry.tld/username/my-webserver # Push to private registry
    createPullSecret: true
    dockerfile: ./webserver/Dockerfile          # Build with --dockerfile=./webserver/Dockerfile
    context: ./webserver                        # Build with --context=./webserver
  database:
    image: another-registry.tld/my-image        # Push to another private registry
    createPullSecret: true
    dockerfile: ./db/Dockerfile                 # Build with --dockerfile=./db/Dockerfile
    context: ./db                               # Build with --context=./db
    # The following lines define custom tag schemata for this image
    tags:
    - ${DEVSPACE_USERNAME}-devspace-${DEVSPACE_GIT_COMMIT}-######

Take a look at the documentation for more information about configuring builds with Docker.

Build images with kaniko (inside a Kubernetes pod)

# File: ./devspace.yaml
images:
  auth-server:
    image: dockerhub-username/my-auth-server    # Push to Docker Hub (no registry hostname required) => uses ./Dockerfile by default
    build:
      kaniko:                                   # Build this image with kaniko
        cache: true                             # Enable caching
        insecure: false                         # Allow kaniko to push to an insecure registry (e.g. self-signed SSL certificate)
  webserver:
    image: myregistry.tld/username/my-webserver # This image will be built using Docker with kaniko as fallback if Docker is not running
    createPullSecret: true
    dockerfile: ./webserver/Dockerfile          # Build with --dockerfile=./webserver/Dockerfile
    context: ./webserver                        # Build with --context=./webserver

Take a look at the documentation for more information about building images with kaniko.

Build images with custom commands and scripts

# File: ./devspace.yaml
images:
  auth-server:
    image: dockerhub-username/my-auth-server    # Push to Docker Hub (no registry hostname required) => uses ./Dockerfile by default
    build:
      custom:
        command: "./scripts/builder"
        args: ["--some-flag", "flag-value"]
        imageFlag: "image"
        onChange: ["./Dockerfile"]
  webserver:
    image: myregistry.tld/username/my-webserver # This image will be built using Docker with kaniko as fallback if Docker is not running
    createPullSecret: true
    dockerfile: ./webserver/Dockerfile          # Build with --dockerfile=./webserver/Dockerfile
    context: ./webserver                        # Build with --context=./webserver

Take a look at the documentation for more information about using custom build scripts.

Configure Deployments

Deploy Component Helm Chart

# File: ./devspace.yaml
deployments:
- name: quickstart-nodejs
  helm:
    componentChart: true
    values:
      containers:
      - image: my-registry.tld/image1
        resources:
          limits:
            cpu: "400m"
            memory: "500Mi"

Learn more about:

• What are components?
• Configuring Components

Deploy Helm charts

# File: ./devspace.yaml
deployments:
- name: default
  helm:
    chart:
      name: redis
      version: "6.1.4"
      repo: https://kubernetes-charts.storage.googleapis.com

Learn more about:

• Configure Helm chart deployments

Deploy manifests with kubectl

# File: ./devspace.yaml
deployments:
- name: my-nodejs-app
  kubectl:
    manifests:
    - manifest-folder/
    - some-other-manifest.yaml

Learn more about:

• Configure manifest deployments

Deploy manifests with kustomize

# File: ./devspace.yaml
deployments:
- name: my-deployment
  kubectl:
    kustomize: true
    manifests:
    - my-manifests/
    - more-manifests/

Take a look at the documentation for more information about deploying manifests with kustomize.

Define multiple deployments in one project

# File: ./devspace.yaml
deployments:
- name: my-deployment
  kubectl:
    manifests:
    - manifest-folder/
    - some-other-manifest.yaml
- name: my-cache
  helm:
    chart:
      name: redis
      version: "6.1.4"
      repo: https://kubernetes-charts.storage.googleapis.com

DevSpace processes all deployments of a project according to their order in the devspace.yaml. You can combine deployments of different types (e.g. Helm charts and manifests).

Take a look at the documentation to learn more about how DevSpace deploys projects to Kubernetes.

Define dependencies between projects (e.g. to deploy microservices)

# File: ./devspace.yaml
dependencies:
- source:
    git: https://github.com/my-api-server
- source:
    git: https:/my-private-git.tld/my-auth-server
- source:
    path: ../my-auth-server
  profile: production

Before deploying a project, DevSpace resolves all dependencies and builds a dependency tree which will then be deployed in a buttom-up fashion, i.e. the project which you call devspace deploy in will be deployed last.

Take a look at the documentation to learn more about how DevSpace deploys dependencies of projects.

Configure Development Mode

Configure code synchronization

# File: ./devspace.yaml
dev:
  sync:
  - localSubPath: ./src # relative to the devspace.yaml
    # Start syncing to the containers current working directory (You can also use absolute paths)
    containerPath: .
    # This tells devspace to select pods that have the following labels
    labelSelector:
      app.kubernetes.io/component: default
      app.kubernetes.io/name: devspace-app
    # Only download changes to these paths, but do not upload any changes (.gitignore syntax)
    uploadExcludePaths:
    - node_modules/
    # Only upload changes to these paths, but do not download any changes (.gitignore syntax)
    downloadExcludePaths:
    - /app/tmp
    # Ignore these paths completely during synchronization (.gitignore syntax)
    excludePaths:
    - Dockerfile
    - logs/

The above example would configure the sync, so that:

• local path ./src will be synchronized to the container's working directory . (specified in the Dockerfile)
• ./src/node_modules would not be uploaded to the container

Take a look at the documentation to learn more about configuring file synchronization during development.

Redeploy instead of synchronizing code

# File: ./devspace.yaml
dev:
  autoReload:
    paths:
    - ./Dockerfile
    - ./manifests/**

This configuration would tell DevSpace to redeploy your project when the Dockerfile changes or any file within ./manifests.

Take a look at the documentation to learn more about configuring auto-reloading for development.

Advanced Configuration

Use config variables

# File: ./devspace.yaml
images:
  default:
    image: ${DEVSPACE_USERNAME}/image-name
    tags:
    - ${DEVSPACE_GIT_COMMIT}-${DEVSPACE_TIMESTAMP}
    - latest

DevSpace allows you to use certain pre-defined variables to make the configuration more flexible and easier to share with others. Additionally, you can add your own custom variables.

Take a look at the documentation to learn more about using variables for dynamic configuration.

Define config profiles and patches

# File: ./devspace-configs.yaml
images:
  backend:
    image: john/devbackend
  backend-debugger:
    image: john/debugger
deployments:
- name: app-backend
  helm:
    componentChart: true
    values:
      containers:
      - image: john/devbackend
      - image: john/debugger
profiles:
- name: production
  patches:
  - op: replace
    path: images.backend.image
    value: john/prodbackend
  - op: remove
    path: deployments[0].component.containers[1]
  - op: add
    path: deployments[0].component.containers
    value:
      image: john/cache

DevSpace allows you to define different profiles for different use cases (e.g. working on different services in the same project, starting certain debugging enviroment) or for different deployment targets (e.g. dev, staging production).

You can tell DevSpace to switch permenantly to another profile using this command: devspace use profile [config-name]

Alternatively, you can temporarily use a different profile for running a single command using the -p / --profile [NAME] flag.

Take a look at the documentation to learn more about using config profiles and patches.

Define hooks

# File: ./devspace.yaml
hooks:
  - command: echo
    args:
      - "before image building"
    when:
      before:
        images: all

The command defined in this hook would be executed before building the images defined in the config.

Take a look at the documentation to learn more about using hooks.

Troubleshooting

My application is not working

Problem

This problem can be caused by many different things.

Solution

There is no single solution for this but here are some steps to troubleshoot this problem:

1. Let DevSpace analyze your deployment

Run this command within your project:

devspace analyze

2. Check your Dockerfile

Make sure your Dockerfile works correctly. Use Google to find the best solutions for creating a Dockerfile for your application (often depends on the framework you are using).

If your pods are crashing, you might have the wrong ENTRYPOINT or something is missing within your containers. A great way to debug this is to start the interactive development mode using:

devspace dev -i

With the interactive mode, DevSpace will override the ENTRYPOINT in our Dockerfile with [sleep, 999999] and open a terminal proxy. That means your containers will definitively start but only in sleep mode. After the terminal opens you can run the start command for your application yourself, e.g. npm start.

3. Debug your application with kubectl

Run the following commands to find issues:

# Failing Pods
kubectl get po                  # Look for terminated, crashed or pending pods (restart > 1 is usually not good)
kubectl describe po [POD_NAME]  # Look at the crash reports Kubernetes provides

# Network issues
kubectl get svc                 # See if there is a service for your app
kubectl get ep                  # Make sure every service has endpoints (if not: make sure you are using the right ports in your devspace.yaml and make sure your pods are running)
kubectl get ing                 # Make sure there is an ingress for your app

Docker: Error response from daemon: Get https://[registry]/v2/: x509: certificate has expired or is not yet valid

Problem

This might happen when the VM of your Docker daemon has the wrong date/time.

Solution

Make sure the VM of your Docker daemon has the correct date/time. For Docker Desktop, you can run the following script to fix the issue:

HOST_TIME=$(date -u +"%Y.%m.%d-%H:%M:%S");
docker run --net=host --ipc=host --uts=host --pid=host -it --security-opt=seccomp=unconfined --privileged --rm -v /:/docker-vm alpine /bin/sh -c "date -s $HOST_TIME"

Contributing

Help us make DevSpace the best tool for developing, deploying and debugging Kubernetes apps.

Reporting Issues

If you find a bug while working with the DevSpace, please open an issue on GitHub and let us know what went wrong. We will try to fix it as quickly as we can.

Feedback & Feature Requests

You are more than welcome to open issues in this project to:

• Give feedback
• Suggest new features
• Report Bugs

Contributing Code

This project is mainly written in Golang. If you want to contribute code:

1. Ensure you are running golang version 1.11.4 or greater for go module support
2. Set the following environment variables:

   GO111MODULE=on
   GOFLAGS=-mod=vendor
   

3. Check-out the project: git clone https://github.com/loft-sh/devspace && cd devspace
4. Make changes to the code
5. Build the project, e.g. via go build -o devspace[.exe]
6. Evaluate and test your changes ./devspace [SOME_COMMAND]

See Contributing Guideslines for more information.

FAQ

What is DevSpace?

DevSpace is an open-source command-line tool that provides everything you need to develop, deploy and debug applications with Docker and Kubernetes. It lets you streamline deployment workflows and share them with your colleagues through a declarative configuration file devspace.yaml.

Is DevSpace free?

YES. DevSpace is open-source and you can use it for free for any private projects and even for commercial projects.

Do I need a Kubernetes cluster to use DevSpace?

Yes. You can either use a local cluster such as Docker Desktop Kubernetes, minikube, or Kind, but you can also use a remote cluster such as GKE, EKS, AKS, RKE (Rancher), or DOKS.

Can I use DevSpace with my existing Kubernetes clusters?

Yes. DevSpace is using your regular kube-context. As long as you can run kubectl commands with a cluster, you can use this cluster with DevSpace as well.

What is a Helm chart?

Helm is the package manager for Kubernetes. Packages in Helm are called Helm charts.

You can use the DevSpace for any private or commercial projects because it is licensed under the Apache 2.0 open source license.