add account squid helm chart

[DaMandal0rian]

Type

enhancement

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Description

• Introduced a new Helm chart for the account-squid application.
• Added configurations for Kubernetes resources like Ingress, ConfigMaps, Persistent Volumes, and Service Accounts.
• Setup roles and role bindings for Kubernetes RBAC.
• Configured environment variables and network settings for database connectivity.
• Established a .helmignore file to define ignore patterns during Helm packaging.

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Changes walkthrough

	Relevant files
Enhancement	1 files _helpers.tpl Add Helper Templates for Helm Chart Configuration                explorer/k8s/helm/account-squid/templates/_helpers.tpl Added helper templates for naming, labeling, and service account naming in Helm chart. +60/-0
Configuration changes	13 files .helmignore Create .helmignore for Helm Packaging                                        explorer/k8s/helm/account-squid/.helmignore Created a .helmignore file to specify patterns to ignore during Helm packaging. +23/-0    Chart.yaml Define Metadata and Versioning for Helm Chart                        explorer/k8s/helm/account-squid/Chart.yaml Defined basic metadata and versioning for the Helm chart. +24/-0    explorer-env-file Configure Environment Variables for Database and Network  explorer/k8s/helm/account-squid/config/explorer-env-file Configured environment variables for database and network endpoints. +8/-0      acme-certificate.yaml Setup ACME Certificate Configuration                                          explorer/k8s/helm/account-squid/misc/acme-certificate.yaml Setup ACME certificate configuration for Kubernetes using cert-manager. +20/-0    clusterroles.yaml Define Cluster Roles and Bindings for Kubernetes                  explorer/k8s/helm/account-squid/templates/clusterroles.yaml Defined cluster roles and bindings for secret reading and admin privileges. +55/-0    configmap.yaml Create ConfigMap for PostgreSQL Configuration                        explorer/k8s/helm/account-squid/templates/configmap.yaml Created a ConfigMap for PostgreSQL configuration. +13/-0    hpa.yaml Configure Horizontal Pod Autoscaler                                            explorer/k8s/helm/account-squid/templates/hpa.yaml Configured horizontal pod autoscaler based on CPU and memory metrics. +46/-0    ingress.yaml Setup Ingress and TLS Configuration                                            explorer/k8s/helm/account-squid/templates/ingress.yaml Setup Ingress for routing with TLS configuration. +45/-0    loadbal-svc.yaml Configure LoadBalancer Service                                                      explorer/k8s/helm/account-squid/templates/loadbal-svc.yaml Configured a LoadBalancer service for the application. +26/-0    namespace.yaml Create Namespace for Application                                                  explorer/k8s/helm/account-squid/templates/namespace.yaml Created a Kubernetes namespace for the application. +6/-0      postgres-configmap.yaml Define PostgreSQL Configurations in ConfigMap                        explorer/k8s/helm/account-squid/templates/postgres-configmap.yaml Defined PostgreSQL specific configurations in a ConfigMap. +27/-0    pv.yaml Setup Persistent Volume for Data Storage                                  explorer/k8s/helm/account-squid/templates/pv.yaml Setup a persistent volume for data storage. +15/-0    pvc.yaml Create Persistent Volume Claim                                                      explorer/k8s/helm/account-squid/templates/pvc.yaml Created a persistent volume claim for the application. +17/-0
Documentation	1 files NOTES.txt Provide Access Instructions for Various Service Types        explorer/k8s/helm/account-squid/templates/NOTES.txt Provided instructions on how to access the application based on different Kubernetes service types. +22/-0

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[github-actions]

PR Description updated to latest commit (303efb3)

[github-actions]

PR Review

⏱️ Estimated effort to review [1-5]	3, because the PR introduces a comprehensive set of Helm chart configurations for Kubernetes, which includes multiple resources such as ConfigMaps, Persistent Volumes, Service Accounts, and RBAC settings. The complexity and variety of Kubernetes objects involved require careful review to ensure they are correctly configured and do not introduce security or operational issues.
🧪 Relevant tests	No
🔍 Possible issues	Possible Bug: The server URL in the ClusterIssuer resource for ACME is set to the staging environment of Let's Encrypt (https://acme-staging-v02.api.letsencrypt.org/directory). This should be changed to the production URL for actual deployments to ensure valid SSL certificates are issued.
🔒 Security concerns	No

Code feedback:

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relevant file	explorer/k8s/helm/account-squid/misc/acme-certificate.yaml
suggestion	Change the ACME server URL to the production endpoint to ensure that the SSL certificates issued are valid for production use. Replace the staging URL with 'https://acme-v02.api.letsencrypt.org/directory'. [important]
relevant line	server: https://acme-staging-v02.api.letsencrypt.org/directory

---

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PR Code Suggestions

Category	Suggestions
Best practice	Ensure output values are properly quoted in YAML. It is recommended to use the quote function for the output of the account-squid.fullname template to ensure that the values are properly quoted in YAML outputs, which can prevent issues with special characters and improve readability. explorer/k8s/helm/account-squid/templates/_helpers.tpl [9] -{{ include "account-squid.fullname" . }} +{{ include "account-squid.fullname" . | quote }}
	Add safety checks for autoscaling configuration values. For the HorizontalPodAutoscaler, it is recommended to add safety checks around the .Values.autoscaling.targetCPUUtilizationPercentage and .Values.autoscaling.targetMemoryUtilizationPercentage to ensure they are defined before usage to prevent runtime errors. explorer/k8s/helm/account-squid/templates/hpa.yaml [20] -targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }} +targetAverageUtilization: {{ required "A valid .Values.autoscaling.targetCPUUtilizationPercentage is required!" .Values.autoscaling.targetCPUUtilizationPercentage }}
	Simplify the service selector to ensure correct pod targeting. The service definition uses a selector that might not correctly target the intended pods. The name key in the selector is redundant and could lead to confusion or misconfiguration, as labels should be sufficient for targeting. Consider removing the name key from the selector to simplify and ensure correct targeting. explorer/k8s/helm/account-squid/templates/service.yaml [13-15] selector: - name: {{ include "account-squid.fullname" . }}-app - app: {{ include "account-squid.fullname" . }}-app + app: {{ include "account-squid.fullname" . }}-app # Simplified and correct targeting
Security	Specify the apiGroup explicitly in quotes for clarity and security. It is a security best practice to specify the apiGroup for the roleRef in ClusterRoleBinding to ensure that the correct API group is used, especially when custom or extended RBAC APIs are present. explorer/k8s/helm/account-squid/templates/clusterroles.yaml [41] -apiGroup: rbac.authorization.k8s.io +apiGroup: "rbac.authorization.k8s.io"
	Use a specific ingress class name to avoid conflicts and enhance security. To improve the security of your Helm chart, consider using a more specific ingress class name than the default 'nginx', especially if multiple ingress controllers are used within the cluster. explorer/k8s/helm/account-squid/templates/ingress.yaml [16] -ingressClassName: nginx +ingressClassName: custom-nginx
	Reduce the scope of permissions granted to the pod-reader-role to enhance security. It is recommended to avoid using overly broad permissions for Kubernetes roles. The pod-reader-role currently has permissions to get, watch, and list all pods across the namespace which might not be necessary depending on the specific requirements. Consider scoping down the permissions or applying more specific role bindings to reduce potential security risks. explorer/k8s/helm/account-squid/templates/roles.yaml [7-9] - apiGroups: [""] resources: ["pods"] - verbs: ["get", "watch", "list"] + verbs: ["get"] # Adjust verbs based on actual necessity
	Ensure secure handling and storage of sensitive data in secrets. The base64 encoding used for POSTGRES_PASSWORD and POSTGRES_USER in the secrets file does not encrypt or secure the data, it merely encodes it. It's important to ensure that the secrets are stored securely using Kubernetes secrets management practices or consider integrating a secrets management tool like HashiCorp Vault for enhanced security. explorer/k8s/helm/account-squid/templates/secrets.yaml [8-9] -POSTGRES_PASSWORD: {{ .Values.postgres.postgresPassword | b64enc}} -POSTGRES_USER: {{ .Values.postgres.postgresUser | b64enc}} +POSTGRES_PASSWORD: {{ .Values.postgres.postgresPassword | b64enc}} # Ensure secure management of secrets +POSTGRES_USER: {{ .Values.postgres.postgresUser | b64enc}} # Consider using a secrets management tool
Maintainability	Ensure consistent formatting in ConfigMap key-value pairs. To avoid potential configuration errors, ensure that spaces are consistent around colons in key-value pairs in the ConfigMap data section. explorer/k8s/helm/account-squid/templates/configmap.yaml [11] -POSTGRES_HOST : {{ .Values.postgres.postgresHost }} +POSTGRES_HOST: {{ .Values.postgres.postgresHost }}
	Use configurable environment variables for probe commands to enhance flexibility and maintainability. The livenessProbe and readinessProbe for the postgres container use hardcoded IP addresses and ports. It's recommended to use environment variables or configuration values to make these settings more flexible and maintainable, especially if there might be changes in the network configuration or service ports. explorer/k8s/helm/account-squid/templates/statefulset.yaml [64-73] livenessProbe: exec: command: - pg_isready - -U - postgres - -h - - 127.0.0.1 + - {{ .Values.postgres.host | default "127.0.0.1" }} - -p - - "5432" + - {{ .Values.postgres.port | default "5432" }}
Performance	Optimize image pulling policy to reduce registry load and improve deployment speed. The imagePullPolicy is set to Always, which can lead to unnecessary load on the image registry and increased deployment times, especially in production environments where image updates are less frequent. Consider changing the imagePullPolicy to IfNotPresent to use the cached image if it exists, reducing load and speeding up deployments. explorer/k8s/helm/account-squid/templates/statefulset.yaml [27] -imagePullPolicy: {{ .Values.image.pullPolicy | quote }} +imagePullPolicy: IfNotPresent # Use cached image if available

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[DaMandal0rian]

closing as making #304 more reusable for all micro-squids