In certain cases, you may want to override default configurations provided by Devtron. For example, for deployments or statefulsets you may want to change the memory or CPU requests or limit or add node affinity or taint tolerance. Say, for ingress, you may want to add annotations or host. Samples are available inside the manifests/updates directory.

To modify a particular object, it looks in namespace devtroncd for the corresponding configmap as mentioned in the mapping below:

Let's take an example to understand how to override specific values. Say, you want to override annotations and host in the ingress, i.e., you want to change devtronIngress, copy the file devtron-ingress-override.yaml. This file contains a configmap to modify devtronIngress as mentioned above. Please note the structure of this configmap, data should have the key override with a multiline string as a value.

apiVersion, kind, metadata.name in the multiline string is used to match the object which needs to be modified. In this particular case it will look for apiVersion: extensions/v1beta1, kind: Ingress and metadata.name: devtron-ingress and will apply changes mentioned inside update: as per the example inside the metadata: it will add annotations owner: app1 and inside spec.rules.http.host it will add http://change-me.

In case you want to change multiple objects, for eg in argocd you want to change the config of argocd-dex-server as well as argocd-redis then follow the example in devtron-argocd-override.yaml.

Once we have made these changes in our local system we need to apply them to a Kubernetes cluster on which Devtron is installed currently using the below command:

kubectl apply -f file-name -n devtroncd

Run the following command to make these changes take effect:

kubectl patch -n devtroncd installer installer-devtron --type='json' -p='[{"op": "add", "path": "/spec/reSync", "value": true }]'

Our changes would have been propagated to Devtron after 20-30 minutes.

Recommended Resources for Production use

To use Devtron for production deployments, use our recommended production overrides located in manifests/updates/production. This configuration should be enough for handling up to 200 microservices.

The overall resources required for the recommended production overrides are:

The production overrides can be applied as pre-devtron installation as well as post-devtron installation in the respective namespace.

Pre-Devtron Installation

If you want to install a new Devtron instance for production-ready deployments, this is the best option for you.

Create the namespace and apply the overrides files as stated above:

kubectl create ns devtroncd

After files are applied, you are ready to install your Devtron instance with production-ready resources.

Post-Devtron Installation

If you have an existing Devtron instance and want to migrate it for production-ready deployments, this is the right option for you.

In the existing namespace, apply the production overrides as we do it above.

kubectl apply -f prod-configs -n devtroncd

Devtron is installed over a Kubernetes cluster and can be installed standalone or along with CI/CD integration:

• : Devtron installation with the CI/CD integration is used to perform CI/CD, security scanning, GitOps, debugging, and observability.

• : The Devtron installation includes functionalities to deploy, observe, manage, and debug existing Helm applications in multiple clusters and deeply integrate with multiple tools using extensions.

Recommended resources

The minimum requirements for Devtron and Devtron with CI/CD integration in production and non-production environments include:

• Non-production

• Production (assumption based on 5 clusters)

Refer to the section for more information.

Before you begin

Create a (preferably K8s 1.16 or higher) if you haven't done that already!

Refer to the article to set up a cluster in the production environment.

Installing Devtron

Configuration

Configure Secrets

For helm installation this section referes to secrets.env section of values.yaml. For kubectl based installation it refers to kind: secret in install/devtron-operator-configs.yaml.

Configure the following properties:

Configure ConfigMaps

For helm installation this section refers to configs section of values.yaml. For kubectl based installation it refers to kind: ConfigMap in install/devtron-operator-configs.yaml.

Configure the following properties:

Storage for Logs and Cache

AWS SPECIFIC

While installing Devtron and using the AWS-S3 bucket for storing the logs and caches, the below parameters are to be used in the ConfigMap.

NOTE: For using the S3 bucket it is important to add the S3 permission policy to the IAM role attached to the nodes of the cluster.

AZURE SPECIFIC

While installing Devtron using Azure Blob Storage for storing logs and caches, the below parameters will be used in the ConfigMap.

To convert string to base64 use the following command:

Note:

1. Ensure that the cluster has read and write access to the S3 buckets/Azure Blob storage container mentioned in DEFAULT_CACHE_BUCKET, DEFAULT_BUILD_LOGS_BUCKET or AZURE_BLOB_CONTAINER_CI_LOG, or AZURE_BLOB_CONTAINER_CI_CACHE.

2. Ensure that the cluster has read access to AWS secrets backends (SSM & secrets manager).

We can use the --set flag to override the default values when installing with Helm. For example, to update POSTGRESQL_PASSWORD and BLOB_STORAGE_PROVIDER, use the install command as:

Secrets

ConfigMaps

Dashboard Configurations

This page helps you to install Devtron without any integrations. Integrations can be added later using Devtron Stack Manager.

Before you begin

Install Helm if you haven't done that already!

helm repo add devtron https://helm.devtron.ai

helm install devtron devtron/devtron-operator --create-namespace --namespace devtroncd

Devtron dashboard

Use the following command to get the dashboard URL:

kubectl get svc -n devtroncd devtron-service -o jsonpath='{.status.loadBalancer.ingress}'

You will get the result something as shown below:

[test2@server ~]$ kubectl get svc -n devtroncd devtron-service -o jsonpath='{.status.loadBalancer.ingress}'
[map[hostname:aaff16e9760594a92afa0140dbfd99f7-305259315.us-east-1.elb.amazonaws.com]]

The hostname aaff16e9760594a92afa0140dbfd99f7-305259315.us-east-1.elb.amazonaws.com as mentioned above is the Loadbalancer URL where you can access the Devtron dashboard.

You can also do a CNAME entry corresponding to your domain/subdomain to point to this Loadbalancer URL to access it at a custom domain.

Devtron Admin credentials

For admin login, use the username as admin, and run the following command to get the admin password:

kubectl -n devtroncd get secret devtron-secret \
-o jsonpath='{.data.ACD_PASSWORD}' | base64 -d

Cleaning Helm installer

Please make sure that you do not have anything inside namespaces devtroncd, devtron-cd devtron-ci, and devtron-demo as the below steps will clean everything inside these namespaces

helm uninstall devtron --namespace devtroncd

kubectl delete -n devtroncd \
-f https://raw.githubusercontent.com/devtron-labs/charts/main/charts/devtron/crds/crd-devtron.yaml

kubectl delete ns devtroncd

Upgrade

To use the CI/CD capabilities with Devtron, users can Install the CI/CD integration.

After Devtron is installed, Devtron is accessible through service devtron-service. If you want to access devtron through ingress, edit devtron-service and change the loadbalancer to ClusterIP. You can do this using kubectl patch command like :

kubectl patch -n devtroncd svc devtron-service -p '{"spec": {"ports": [{"port": 80,"targetPort": "devtron","protocol": "TCP","name": "devtron"}],"type": "ClusterIP","selector": {"app": "devtron"}}}'

After that create ingress by applying the ingress yaml file. You can use this yaml file to create ingress to access devtron:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  labels:
    app: devtron
    release: devtron
  name: devtron-ingress
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /orchestrator
        pathType: ImplementationSpecific 
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /dashboard
        pathType: ImplementationSpecific
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /grafana
        pathType: ImplementationSpecific  

You can access devtron from any host after applying this yaml. For k8s versions <1.19, apply this yaml:

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  labels:
    app: devtron
    release: devtron
  name: devtron-ingress
spec:
  rules:
  - http:
      paths:
      - backend:
          serviceName: devtron-service
          servicePort: 80
        path: /orchestrator
      - backend:
          serviceName: devtron-service
          servicePort: 80
        path: /dashboard
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /grafana
        pathType: ImplementationSpecific  

Optionally you also can access devtron through a specific host like :

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  labels:
    app: devtron
    release: devtron
  name: devtron-ingress
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        host: devtron.example.com
        path: /orchestrator
        pathType: ImplementationSpecific 
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
       Host: devtron.example.com
        path: /dashboard
        pathType: ImplementationSpecific
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /grafana
        pathType: ImplementationSpecific  

Before you begin

Install Helm.

Installing Devtron using Helm

1. Add Devtron repository

2. Install Devtron

helm repo add devtron https://helm.devtron.ai

helm install devtron devtron/devtron-operator \
--create-namespace --namespace devtroncd \
--set installer.modules={cicd}

helm repo add devtron https://helm.devtron.ai

helm install devtron devtron/devtron-operator --create-namespace --namespace devtroncd \
--set installer.modules={cicd} \
--set configs.BLOB_STORAGE_PROVIDER=S3 \
--set configs.DEFAULT_CACHE_BUCKET=demo-s3-bucket \
--set configs.DEFAULT_CACHE_BUCKET_REGION=us-east-1 \
--set configs.DEFAULT_BUILD_LOGS_BUCKET=demo-s3-bucket \
--set configs.DEFAULT_CD_LOGS_BUCKET_REGION=us-east-1

helm repo add devtron https://helm.devtron.ai

helm install devtron devtron/devtron-operator --create-namespace --namespace devtroncd \
--set installer.modules={cicd} \
--set secrets.AZURE_ACCOUNT_KEY=xxxxxxxxxx \
--set configs.BLOB_STORAGE_PROVIDER=AZURE \
--set configs.AZURE_ACCOUNT_NAME=test-account \
--set configs.AZURE_BLOB_CONTAINER_CI_LOG=ci-log-container \
--set configs.AZURE_BLOB_CONTAINER_CI_CACHE=ci-cache-container

Append the command with --set installer.release="vX.X.X" to install a particular version of Devtron. Where vx.x.x is the release tag.

For those countries/users where Github is blocked, you can use Gitee as the installation source:

helm repo add devtron https://helm.devtron.ai

helm install devtron devtron/devtron-operator --create-namespace --namespace devtroncd \
--set installer.source=gitee

If you are planning to use Devtron for production deployments, please refer to our recommended overrides for Devtron Installation.

Check Devtron installation status

The install commands start Devtron-operator, which takes about 20 minutes to spin up all of the Devtron microservices one by one. You can use the following command to check the status of the installation:

kubectl -n devtroncd get installers installer-devtron -o jsonpath='{.status.sync.status}'

The command executes with one of the following output messages, indicating the status of the installation:

Check the installer logs

To check the installer logs, run the following command:

kubectl logs -f -l app=inception -n devtroncd

Devtron dashboard

Use the following command to get the dashboard URL:

kubectl get svc -n devtroncd devtron-service \
-o jsonpath='{.status.loadBalancer.ingress}'

You will get an output similar to the one shown below:

[test2@server ~]$ kubectl get svc -n devtroncd devtron-service \
-o jsonpath='{.status.loadBalancer.ingress}'
[map[hostname:aaff16e9760594a92afa0140dbfd99f7-305259315.us-east-1.elb.amazonaws.com]]

The hostname aaff16e9760594a92afa0140dbfd99f7-305259315.us-east-1.elb.amazonaws.com as mentioned above is the Loadbalancer URL where you can access the Devtron dashboard.

If you don't see any results or receive a message that says "service doesn't exist," it means Devtron is still installing; please check back in 5 minutes.

Note: You can also do a CNAME entry corresponding to your domain/subdomain to point to this Loadbalancer URL to access it at a custom domain.

Devtron Admin credentials

For admin login, use the username:admin, and run the following command to get the admin password:

kubectl -n devtroncd get secret devtron-secret -o jsonpath='{.data.ACD_PASSWORD}' | base64 -d

Cleaning Devtron Helm installer

Please make sure that you do not have anything inside namespaces devtroncd, devtron-cd, devtron-ci, and devtron-demo as the below steps will clean everything inside these namespaces:

helm uninstall devtron --namespace devtroncd

kubectl delete -n devtroncd -f https://raw.githubusercontent.com/devtron-labs/charts/main/charts/devtron/crds/crd-devtron.yaml

kubectl delete -n argo -f https://raw.githubusercontent.com/devtron-labs/devtron/main/manifests/yamls/workflow.yaml

kubectl delete ns devtroncd devtron-cd devtron-ci devtron-demo

FAQs

kubectl -n devtroncd get installers installer-devtron -o jsonpath='{.status.sync.status}'

pod=$(kubectl -n devtroncd get po -l app=inception -o jsonpath='{.items[0].metadata.name}')&& kubectl -n devtroncd logs -f $pod

cd devtron-installation-script/
kubectl delete -n devtroncd -f yamls/
kubectl -n devtroncd patch installer installer-devtron --type json -p '[{"op": "remove", "path": "/status"}]'

Still facing issues, please reach out to us on Discord.