This documentation provides a detailed explanation of how to create a new helm chart using common templates and deploy it using helmfile.
helm
Clone the DIGIT-DevOps repository using the below command and checkout to the DIGIT-2.9LTS branch.
Navigate to the common_chart_template chart
Edit the chart.yaml with your service_name and update the dependency chart path.
Now, edit the values.yaml file to override the values present in the common chart and the values need to be provided for your service. If your service doesn't depend on db then you can disable the DB migration by setting the value enable as false. Also if you are using your docker account you need to update the docker container in the below values.yaml file.
After making these changes you need to provide this chart configuration in helmfile.yaml file
Set up DIGIT using HelmFile. You can still try it out and give us feedback.
This guide walks you through the steps required to set up DIGIT using helmfile.
git
Kubernetes Cluster
Helmfile is a declarative spec for deploying helm charts. It lets you…
Keep a directory of chart value files and maintain changes in version control.
Apply CI/CD to configuration changes.
Periodically sync to avoid skew in environments.
To avoid upgrades for each iteration of helm, the helmfile executable delegates to helm - as a result, must be installed.
Standardisation of Helm templates (Override specific parameters such as namespace)
To improve the Utilisation of Helm capabilities (Rollback)
Easy to add any open-source helm chart to your DIGIT stack
run as a container
Archlinux: install via pacman -S helmfile
You can also use a shim to make calling the binary easier:
The helmfile init sub-command checks the dependencies required for helmfile operation, such as helm, helm diff plugin, helm secrets plugin, helm helm-git plugin, helm s3 plugin. When it does not exist or the version is too low, it can be installed automatically.
The helmfile sync sub-command syncs your cluster state as described in your helmfile. The default helmfile is helmfile.yaml, but any YAML file can be passed by specifying a --file path/to/your/yaml/file flag.
The helmfile apply sub-command begins by executing diff. If diff finds that there are any changes, sync is executed. Adding --interactive instructs Helm File to request your confirmation before sync.
The helmfile destroys sub-commands uninstalls and purges all the releases defined in the manifests. helmfile --interactive destroy instructs Helm File to request your confirmation before actually deleting releases.
Update domain name in env.yaml
Update db password , flywaypassword, loginusername, loginpassword and git-sync private key in env-secrets.yaml
Note: Make sure the db_password and flywaypassword are same
Note
Run the below command to install DIGIT successfully.
This guide outlines a deployment strategy for running containerized applications on Kubernetes, focusing on seamless database integration. It's suitable for teams looking to simplify their database setup using in-cluster PostgreSQL or externally managed database services.
By updating the Kubernetes deployment configuration, teams can easily switch from an in-cluster PostgreSQL database to a managed service. This move enhances scalability and reliability while reducing the operational overhead of database management.
Scalability and Reliability: Managed services offer superior scalability and reliability compared to in-cluster databases.
Reduced Operational Overhead: Outsourcing database management allows teams to concentrate on application development.
To integrate a managed PostgreSQL service, modify the following parameters in the
deploy-as-code/charts/environments/env.yaml configuration file:
db-host: Update with the database service host address.
db-name: Update with the specific database name.
db-url: Update with the complete database connection URL.
domain: Update domain name with your domain name
Update db password, db username, flyway username, flyway password, login username, login password and git-sync private key in env-secrets.yaml
Run the below command to install DIGIT successfully.
Please hit the below URL to login into the employee dashboard with SUPERUSER access
Log in with the user credentials which you have provided in the below file path
Tested Environment
This deployment approach has been thoroughly tested on an Amazon Web Services Elastic Kubernetes Service (AWS EKS) Cluster with Kubernetes version 1.28.
download one of the
open SUSE: install via zypper in helmfile assuming you are on Tumbleweed; if you are on Leap you must add the repo for your distribution version once before that command, e.g. zypper ar https://download.opensuse.org/repositories/devel:/kubic/openSUSE_Leap_\$releasever kubic
Windows (using ): scoop install helmfile
macOS (using ): brew install helmfile
The . There is no latest tag, since the 0.x versions can contain breaking changes, so pick the right tag. Example using helmfile 0.156.0:
1. Generate SSH key pairs using the below method Using the online website (not recommended in a production setup. To be only used for demo setups): 2. Add the public key to your GitHub account - (reference: )
Note: 1. Generate SSH key pairs using the below method Using the online website (not recommended in production setup. To be only used for demo setups): 2. Add the public key to your GitHub account - (reference: )
Release chart helps to deploy the product specific modules in one click
This section of the document walks you through the details of how to prepare a new release chart for existing products.
Git
Install Visualstudio IDE Code for better code visualization/editing capabilities
Clone the following DIGIT-DevOps where we have all the release charts for you to refer.
Create a new release version of the below products.
Select your product, copy the previous release version file, and rename it with your new version.
The above code ensures the dependancy_chart-digit-v2.6.yaml with your new release version is copied and renamed.
Note: replace <your_release_version> with your new release version.
Navigate to the release file on your local machine. Open the file using Visualstudio or any other file editor.
Update the release version "v2.6" with your new release version.
Update the modules(core, business, utilities, m_pgr, m_property-tax,..etc) service images with new release service images.
Add new modules
name - add your module name with "m_demo" ideal format ie. "m" means module and "demo" would be your module name
dependencies - add your module dependencies (name of other modules)
services - add your module-specific new service images
This section of the document walks you through the details of how to prepare a new release chart for new products.
Git
GitHub Organization Account
Install Visualstudio IDE Code for better code visualization/editing capabilities
When you have a new product to introduce, you can follow the below steps to create the release chart for a new product.
eGov partners can follow the below steps:
Fork the DIGIT-DevOps repo to your GitHub organization account
Clone the forked DIGIT-DevOps repo to your local machine
git clone --branch release https://github.com/<your_organization_account_name>/DIGIT-DevOps.git
Note: replace this <your_organization_account_name> with your github organization account name.
Navigate to the product-release-charts folder and create a new folder with your product name. cd DIGIT-DevOps/config-as-code/product-release-charts mkdir <new_product_name>Note: replace <new_product_name> with your new product name.
Create a new release chart file in the above-created product folder.touch dependancy_chart-<new_product_name>-<release_version>.yaml1. Open your release chart file dependancy_chart-<new_product_name>-<release_version>.yaml and start preparing as mentioned in the below release template.
eGov users can follow the below steps:
Clone the forked DIGIT-DevOps repo to your local machine
git clone --branch release https://github.com/egovernments/DIGIT-DevOps.git
Navigate to the product-release-charts folder and create a new folder with your product name. cd DIGIT-DevOps/config-as-code/product-release-charts mkdir <new_product_name>Note: replace <new_product_name> with your new product name
Create a new release chart file in the above-created product folder.touch dependancy_chart-<new_product_name>-<release_version>.yaml1. Open your release chart file dependancy_chart-<new_product_name>-<release_version>.yaml and start preparing as mentioned in the below release template.
