To understate it, having your application connect to your database as the root user isn't the best idea. In this module, you'll learn the most common Kubectl commands needed to create Deployments that run your applications on a Kubernetes cluster. Why does Jesus turn to the Father to forgive in Luke 23:34? use the standard host build with the frontend bundled and served from the Apply this Deployment to the Kubernetes cluster: Beautiful! With the Kubescape extension, you can: Regularly scan your configurations and images. A Deployment is responsible for creating and updating instances of your application. The open-source game engine youve been waiting for: Godot (Ep. Instead, I use a tag that hopefully makes it extremely clear that this is for use on my laptop. All the source codes and deployments which related to this post are published on gitlab repository. To do that: To enable it you need to provide a valid email address in the chart's values: By default, the charts use letsencrypt-staging so in the above example we instruct helm to use the production issuer So, in the spirit of too much free time on a Saturday, I decided to try to deploy a Backstage app to Kubernetes, While our version of Backstage has had the benefit of time to mature and evolve, the first iteration of our open-source version is still nascent. To install the Backstage app, we make use of npx which is a tool to run Node executables straight from the registry. This is, in most senses of the word, a very bad idea; the word "trust" shouldn't be anywhere near your database config in a production environment. Use blueprint drift detection to make sure the Backstage installation isn't tinkered around with. As the discussion on the Helm GitHub issue shows, Helm recommends a one-to-one relationship between application and Helm chart. At Spotify, we deploy software generally by: This method is covered in Building a Docker image and For any Backstage configuration secrets, such as authorization tokens, we can for PostgreSQL. In this article, Ill highlight some of these challenges and share how I have managed to solve them. Backstage has a plugin architecture, which means that the UI for different resources (components in Backstage lingo) can be owned by separate teams; Seamlessly see the installation take place without you having to read through installation guides. Now that you know what Deployments are, let's go to the online tutorial and deploy our first app! Create the Kubernetes Service descriptor: The selector here is telling the Service which pods to target, and the port We talk to maintainers Lee Mills and Matt Clarke from Spotify. This ConfigMap configurations used in the Backstage deployment as environment variables. Backstage requires you to configure a. In Kubernetes, an Ingress is an API object that manages the routing of external requests to one of the many possible internal services in a Kubernetes cluster. As we deployed our charts to clusters hosted in different cloud providers, over time the logic in our chart was becoming more complex. Now you can open a browser on your machine to localhost and I used PostgreSQL for the database, mostly because I've never tried to deploy SQLite to Kubernetes, and didn't feel like learning two new things on a weekend. Then please press the follow me button. The app directory is the UI code, and the backend directory is the backend code. For a list of trademarks of The Linux Foundation, please see our Trademark Usage page: https://www.linuxfoundation.org/trademark-usage, 5. For storing secrets in Git, consider Now Backstage web can be access via localhost:7007 from host machine. Instead of pushing to a container registry, I side-loaded the container image onto my kind node: If this were a production deployment, you'd want to use a sensible tagging scheme, and push to a real container image registry. A deployment allows you to describe an application's life cycle, such as which images to use for the app, the number of pods there should be, and the way in which they should be updated. Recently, I published a recipe for Backstage, an open source project by Spotify which over the last year has witnessed tremendous adoption and growth by platform engineering teams of all types of enterprises.. These Secret configurations used in the Postgres deployment as environment variables. To find the public IP address run: NOTE: this is not a production ready deployment. This is generally done with a Kubernetes namespace To expose the Postgres to outside I have defined below Kubernets service. You'll probably want to trim down the Docker image. Enter 3) Finally, publish the cluster blueprint to any cluster type be it EKS, AKS, DigitalOcean, VMware, etc. Applications need to be packaged into one of the supported container formats in order to be deployed on Kubernetes. This folder contains Helm charts that can easily create a Kubernetes deployment of a demo Backstage app. Frontend Components with Authorization, Storing the Docker image on a container registry, Referencing the image in a Kubernetes Deployment YAML, Applying that Deployment to a Kubernetes cluster. This follows similar steps as the PostgreSQL deployment. I have changed the app name in with below configurations on app-config.yaml. Because again, a 1.3 gig Docker image is going to cause headaches when your While Spotify has many awesome engineers, not every engineer is well-versed in our chosen cloud-provider tooling. The solution is to make sure that the contents of the configMap that holds the certificate match the CA for the PostgreSQL instance. Make sure to create the appropriate DNS entry in your infrastructure. Updating a Kubernetes API version for a resource meant updating several charts, making the upgrade process complex and error-prone. I've tried to describe Backstage to people before, and the response is usually something along the lines of "so like a wiki?" Similar to how Backstage ties together all of Spotifys infrastructure, our ambition is to make the open-source version of Backstage the standard UX layer across the broader infrastructure landscape. Last modified October 02, 2022 at 10:10 PM PST: Installing Kubernetes with deployment tools, Customizing components with the kubeadm API, Creating Highly Available Clusters with kubeadm, Set up a High Availability etcd Cluster with kubeadm, Configuring each kubelet in your cluster using kubeadm, Communication between Nodes and the Control Plane, Guide for scheduling Windows containers in Kubernetes, Topology-aware traffic routing with topology keys, Resource Management for Pods and Containers, Organizing Cluster Access Using kubeconfig Files, Compute, Storage, and Networking Extensions, Changing the Container Runtime on a Node from Docker Engine to containerd, Migrate Docker Engine nodes from dockershim to cri-dockerd, Find Out What Container Runtime is Used on a Node, Troubleshooting CNI plugin-related errors, Check whether dockershim removal affects you, Migrating telemetry and security agents from dockershim, Configure Default Memory Requests and Limits for a Namespace, Configure Default CPU Requests and Limits for a Namespace, Configure Minimum and Maximum Memory Constraints for a Namespace, Configure Minimum and Maximum CPU Constraints for a Namespace, Configure Memory and CPU Quotas for a Namespace, Change the Reclaim Policy of a PersistentVolume, Configure a kubelet image credential provider, Control CPU Management Policies on the Node, Control Topology Management Policies on a node, Guaranteed Scheduling For Critical Add-On Pods, Migrate Replicated Control Plane To Use Cloud Controller Manager, Reconfigure a Node's Kubelet in a Live Cluster, Reserve Compute Resources for System Daemons, Running Kubernetes Node Components as a Non-root User, Using NodeLocal DNSCache in Kubernetes Clusters, Assign Memory Resources to Containers and Pods, Assign CPU Resources to Containers and Pods, Configure GMSA for Windows Pods and containers, Configure RunAsUserName for Windows pods and containers, Configure a Pod to Use a Volume for Storage, Configure a Pod to Use a PersistentVolume for Storage, Configure a Pod to Use a Projected Volume for Storage, Configure a Security Context for a Pod or Container, Configure Liveness, Readiness and Startup Probes, Attach Handlers to Container Lifecycle Events, Share Process Namespace between Containers in a Pod, Translate a Docker Compose File to Kubernetes Resources, Enforce Pod Security Standards by Configuring the Built-in Admission Controller, Enforce Pod Security Standards with Namespace Labels, Migrate from PodSecurityPolicy to the Built-In PodSecurity Admission Controller, Developing and debugging services locally using telepresence, Declarative Management of Kubernetes Objects Using Configuration Files, Declarative Management of Kubernetes Objects Using Kustomize, Managing Kubernetes Objects Using Imperative Commands, Imperative Management of Kubernetes Objects Using Configuration Files, Update API Objects in Place Using kubectl patch, Managing Secrets using Configuration File, Define a Command and Arguments for a Container, Define Environment Variables for a Container, Expose Pod Information to Containers Through Environment Variables, Expose Pod Information to Containers Through Files, Distribute Credentials Securely Using Secrets, Run a Stateless Application Using a Deployment, Run a Single-Instance Stateful Application, Specifying a Disruption Budget for your Application, Coarse Parallel Processing Using a Work Queue, Fine Parallel Processing Using a Work Queue, Indexed Job for Parallel Processing with Static Work Assignment, Handling retriable and non-retriable pod failures with Pod failure policy, Deploy and Access the Kubernetes Dashboard, Use Port Forwarding to Access Applications in a Cluster, Use a Service to Access an Application in a Cluster, Connect a Frontend to a Backend Using Services, List All Container Images Running in a Cluster, Set up Ingress on Minikube with the NGINX Ingress Controller, Communicate Between Containers in the Same Pod Using a Shared Volume, Extend the Kubernetes API with CustomResourceDefinitions, Use an HTTP Proxy to Access the Kubernetes API, Use a SOCKS5 Proxy to Access the Kubernetes API, Configure Certificate Rotation for the Kubelet, Adding entries to Pod /etc/hosts with HostAliases, Interactive Tutorial - Creating a Cluster, Interactive Tutorial - Exploring Your App, Externalizing config using MicroProfile, ConfigMaps and Secrets, Interactive Tutorial - Configuring a Java Microservice, Apply Pod Security Standards at the Cluster Level, Apply Pod Security Standards at the Namespace Level, Restrict a Container's Access to Resources with AppArmor, Restrict a Container's Syscalls with seccomp, Exposing an External IP Address to Access an Application in a Cluster, Example: Deploying PHP Guestbook application with Redis, Example: Deploying WordPress and MySQL with Persistent Volumes, Example: Deploying Cassandra with a StatefulSet, Running ZooKeeper, A Distributed System Coordinator, Mapping PodSecurityPolicies to Pod Security Standards, Well-Known Labels, Annotations and Taints, ValidatingAdmissionPolicyBindingList v1alpha1, Kubernetes Security and Disclosure Information, Articles on dockershim Removal and on Using CRI-compatible Runtimes, Event Rate Limit Configuration (v1alpha1), kube-apiserver Encryption Configuration (v1), kube-controller-manager Configuration (v1alpha1), Contributing to the Upstream Kubernetes Code, Generating Reference Documentation for the Kubernetes API, Generating Reference Documentation for kubectl Commands, Generating Reference Pages for Kubernetes Components and Tools, fix: CSS inconsistencies between docs/tutorials/kubernetes-basics and (#34188) (d75f302c1f). A Kubernetes object is a way to tell the . As mentioned above, Backstage need github access token. Once you have a running Kubernetes cluster, you can deploy your containerized applications on top of it. Has Microsoft lowered its Windows 11 eligibility criteria? The object definitions might look familiar, since To access the Backstage service from outside the Kubernets cluster, I have done Kubernets port-forwarding as below. To do so, you create a Kubernetes Deployment configuration. Backstage can be run with Sqlite and Postgres databases. It's basically a "change in progress" as Kubernetes is transitioning a Deployment from an old state to a new state. This Context Backstage gives developers a uniform overview of all their resources, regardless of how and where they are running, as well as an easy way to onboard and start using those tools. For testing locally with minikube, you can point the local Docker daemon to I have linked a Kubernets service with port 7007 to the Backstage Pod in order to access from the outside. As soon as you submit a pull request to Spotifys GitHub Enterprise, our CI system automatically posts a link to the CI/CD view in Backstage. You'll also want to write at least a minimal .dockerignore file: I avoid using the latest tag because it doesn't play well with side loading containers onto kind. Kubernetes. In staging/production environments, we use Terraform to bootstrap the database (as a cloud resource - RDS database or the like), then apply the Kubernetes definitions via Terraform (so it's all nicely tied together.) Read more about these usecases from Spotify Engineering blog. More likely in a production scenario, you'd want to use a more create a similar Kubernetes Secret as we did mapping translates normal HTTP port 80 to the backend http port (7007) on the A production deployment would also require a stable URL and SSL certificate, which I didn't attempt to set up for this post. then apply the changes with kubectl apply -f kubernetes/backstage.yaml. These are applications that need to be run on every node in the cluster. To install the charts a specific namespace use --namespace : To deploy backstage with the pre-loaded demo data disable backend.demoData: For more customization options take a look at the values.yaml file. When a deployment is created, Kubernetes builds pods to host application instances. Some resources created by these charts are meant to survive after upgrades and even after uninstalls. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. These charts can install or reuse a clusterIssuer to generate certificates for the backstage ingress. The Backstage app run with separate Kubernetes namespace. pod. For this example, we'll And we learned a thing or two via the feedback we received. The deployment and pod are running in the cluster. One frontend for all your infrastructure. The values can be generated It looks like nothing has changed, but this page is being rendered inside our Kubernetes cluster and exposed to the browser. It gets harder for individual engineers to find and use all these distinct tools. First, create a Kubernetes Secret for the PostgreSQL username and password. Backstage run on port 7007 inside the Pod. First we need to install Backstage app dependencies with yarn install, generate type definitions using yarn tsc, and build all packages with yarn build. When I started my Kubernetes journey years ago, I used manifest files to manage applications on Kubernetes. Finally, we can deploy Backstage to Kubernetes. cluster, first install kubectl, the Backstage comes with a built in command to help you build a Docker image which we can deploy into a Kubernetes cluster. Then use that to create a software add-on with the parameters you want to use as a platform admin (for example, all Backstage deployments must use Postgres as the database) so that you have a hardened version of Backstage available for deployment. it cheats by looking up the first pod for a service and connecting to the mapped When discussing infrastructure challenges with peer companies, its clear that we are not alone in struggling with fragmentation across our developer ecosystem. You can do this using the npx script from the Backstage package: A prompt will first ask you to pick a name for the app, and then a database to use. TLDR; If you're deploying a service with Kubernetes, you shouldn't have to use all of your cluster management skills just to perform everyday developer tasks (like seeing which pods are experiencing errors or checking autoscaler limits). Most of the microservices running on our cluster were using the same Kubernetes resources, such as Deployments, Services, and ConfigMaps. What's the difference between a power rail and a signal line? Open http://localhost:7000 in your browser to check that Backstage is working correctly. practices. Once other resources come into play (databases, queueing, etc. cluster. Configuring a connection to an existing PostgreSQL instance is possible through the chart's values. Backstage Kubernetes simplifies your deployment workflow by connecting to your existing Kubernetes implementation and aggregating the status of all your . Find centralized, trusted content and collaborate around the technologies you use most. and to write about the experience in order to give others a head start. variables in the container with values from the Secret we created. Apply this Service to the Kubernetes cluster: Now we have a fully operational Backstage deployment! It used postgres:13.2-alpine Docker image and linked with Postgres storage PersistentVolume. This could be things like logging or monitoring agents. This is done by creating . A Backstage app is a lighter-weight version of Backstage that's meant to be deployed by end users, as opposed to those who are developing Backstage itself. This is covered in the Kind docs. Our homegrown CI system uses Jenkins under the hood, but Spotify engineers dont need to know that. This cluster has no network access and thus, without setting imagePullPolicy: Never, our deployment would fail. Once install the dependencies and build the package with Yarn, we can build the Backstage Docker image as below. To learn more, see our tips on writing great answers. Make sure to create the appropriate DNS entry in your infrastructure. While exciting, Backstage is still very new technology, so the docs aren't quite stable yet for onboarding new users. The npx script should have created a new directory named after your app; for my app the directory is called example-app. external load balancer. To simplify things, you can use the app-backend plugin to serve the UI directly from the backend. In here I have encoded github token into base64 string and added to the secret file. These Kubernetes resources are similar to those provided in the Backstage repository already. Since it's browse your Kubernetes-deployed Backstage instance. Create a Kubernetes (GKE) cluster. Why did the Soviets not shoot down US spy satellites during the Cold War? While we tried using a single Helm chart for all the services, the limitations in the Helm design meant that we had to compromise on some of the Helm features. The PersistentVolume configured above uses local Kubernetes node storage. Kubernetes will automatically pick Docker as the default container runtime. This documentation shows common examples that may be useful when deploying Backstage Docker image, update the image tag reference in backstage.yaml and Changed the app name in with below configurations on app-config.yaml contents of supported! Published on gitlab repository frontend bundled and served from the backend come into play ( databases, queueing etc... Manifest files to manage applications on top of it demo Backstage app, we 'll and we learned a or... Network access and thus, without setting imagePullPolicy: Never, our deployment would fail with a deployment! This folder contains Helm charts that can easily create a Kubernetes API version for a list of trademarks the. 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Service to the online tutorial and deploy our first app github access token forgive in Luke 23:34 your on. Manage applications on a Kubernetes API version for a list of trademarks of the Linux Foundation please... Logging or monitoring agents Backstage is working correctly with the frontend bundled served... The upgrade process complex and error-prone Kubernetes deployment configuration agree to our terms of service, privacy policy and policy... Update the image tag reference in backstage.yaml share how I have changed the app name with! This ConfigMap configurations used in the Backstage deployment username and password, let 's go to the cluster. Our deployment would fail learned a thing or two via the feedback we received:! Clicking post your Answer, you agree to our terms of service, privacy and... Will automatically pick Docker as the root user is n't tinkered around with Foundation, please see our Trademark page. Files to manage applications on top of it your database as the default container runtime you agree to our of! For onboarding new users your application deploy your containerized applications on top of it cluster, you to! To solve them those provided in the Postgres deployment as environment variables things like logging or agents! Two via the feedback we received around the technologies you use most this is for use on laptop! On app-config.yaml to create the appropriate DNS entry in your browser to check that Backstage still! Directly from the apply this deployment to the Secret we created updating Kubernetes. Jesus turn to the online tutorial and deploy our first app hopefully makes it extremely that!
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