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Version: 3.10

Install Argo CD

Review the necessary prerequisites and follow the steps to enable Argo CD within KubeRocketCI.

Prerequisites​

The following tools must be installed:

Installation​

Enabling Argo CD on the platform involves two main steps:

  • Argo CD installation
  • Argo CD integration with Add-Ons

Argo CD can be installed in several ways, please follow the official documentation for more details. It is also possible to install Argo CD using the edp-cluster-add-ons.

Install With Helm​

Follow the steps below to install Argo CD using Helm:

"For the OpenShift users"

When using the OpenShift platform, apply the SecurityContextConstraints resource. Change the namespace in the users section if required.

View: SecurityContextConstraints
allowHostDirVolumePlugin: false
allowHostIPC: false
allowHostNetwork: false
allowHostPID: false
allowHostPorts: false
allowPrivilegeEscalation: true
allowPrivilegedContainer: false
allowedCapabilities: null
apiVersion: security.openshift.io/v1
allowedFlexVolumes: []
defaultAddCapabilities: []
fsGroup:
  type: MustRunAs
  ranges:
    - min: 99
      max: 65543
groups: []
kind: SecurityContextConstraints
metadata:
  annotations:
      "helm.sh/hook": "pre-install"
  name: argo-redis-ha
priority: 1
readOnlyRootFilesystem: false
requiredDropCapabilities:
- KILL
- MKNOD
- SETUID
- SETGID
runAsUser:
  type: MustRunAsRange
  uidRangeMin: 1
  uidRangeMax: 65543
seLinuxContext:
  type: MustRunAs
supplementalGroups:
  type: RunAsAny
seccompProfiles:
  - '*'
users:
- system:serviceaccount:argocd:argo-redis-ha
- system:serviceaccount:argocd:argo-redis-ha-haproxy
- system:serviceaccount:argocd:argocd-notifications-controller
- system:serviceaccount:argocd:argo-argocd-repo-server
- system:serviceaccount:argocd:argocd-server
volumes:
- configMap
- downwardAPI
- emptyDir
- persistentVolumeClaim
- projected
- secret

  1. Fork the Add-Ons repository to personal account.

  2. Run the installation:

    helm dependency update argo-cd
    helm install argocd argo-cd -n argocd --create-namespace

  3. Port-forward Argo CD service using kubectl:

    kubectl port-forward svc/argo-argocd-server 8080:80 -n argocd

  4. Login to the Argo CD server in browser using login and password:

    info

    By default, to access the console with administrative privileges, use the following credentials:

    • URL: localhost:8080
    • Login: admin
    password
    kubectl get secret -n argocd argocd-initial-admin-secret --template={{.data.password}} | base64 -d

  5. Integrate Argo CD with Add-Ons and Install Core Add-Ons

    To ensure the environment functions correctly, it is necessary to install the following core components:

    • Nginx Ingress Controller: Provides external endpoint management through ingress resources.
    • External Secrets Operator (ESO): Manages secure provisioning and access to secrets.
    • Keycloak (KK): Enables Single Sign-On (SSO) for authentication.
    • Keycloak Operator: Simplifies the configuration and management of Keycloak instances.

    These components can be installed using the prepared add-ons repository. Detailed installation instructions are available in the add-ons installation guide.

    To configure these components, refer to the relevant sections in values.yaml, which include the required parameters for enabling and customizing the add-ons.

    Add-Ons Overview

    After completing the installation of these components, proceed with the configuration of Argo CD.

  6. Update Argo CD helm chart:

    note

    After installing the necessary add-ons, such as the External Secrets Operator, it is recommended to add ESO components for all secrets that were manually created during the integration of add-ons with Argo CD. An example can be found here.

    info

    Make sure Kubernetes resources have the required labels for Argo CD to manage them.

    metadata:
      label:
        app.kubernetes.io/part-of: argocd

    To enable features such as ingress, login via oidc provider, provisioning secret using ESO need to update Argo CD with values below:

    kubernetes values.yaml
    argo-cd:
      global:
        # -- Default domain used by all components
        ## Used for ingresses, certificates, SSO, notifications, etc.
        domain: argocd.example.com
      configs:
        cm:
          # required when SSO is enabled
          url: "https://argocd.example.com"
        oidc.config: |
          issuer: https://keycloak.example/auth/realms/shared
      server:
        ingress:
          enabled: true
          hosts:
            - "argocd.example.com"
    oidc:
      enabled: true
    eso:
      enabled: true
    View: openshift values.yaml
    argo-cd:
    global:
      # -- Default domain used by all components
      ## Used for ingresses, certificates, SSO, notifications, etc.
      domain: argocd.example.com
    configs:
      cm:
        # required when SSO is enabled
        url: "https://argocd.example.com"
      oidc.config: |
        issuer: https://keycloak.example/auth/realms/shared
    server:
      route:
        enabled: true
        hostname: "argocd.example.com"
        termination_type: edge
        termination_policy: Redirect
    oidc:
    enabled: true
    eso:
    enabled: true

Next Step​

After completing the steps outlined in this documentation, the following results should be achieved:

  1. Centralized Argo CD Instance:

    • A fully deployed and operational Argo CD instance installed using Helm.

  2. Add-Ons Repository Configured:

    • Add-ons repository integrated and configured with Argo CD for managing additional components.

  3. Core Components Deployed:

    • Essential infrastructure components, such as:
      • External Secrets Operator (ESO) for secure secret management.
      • Keycloak and Keycloak Operator for Single Sign-On (SSO).
      • Nginx Ingress Controller for external endpoint management.