Chapter 4. GitOps

• TP: Technology Preview
• GA: General Availability

• Previously, huge memory spikes were observed on the application controller on startup. The flag --kubectl-parallelism-limit for the application controller is now set to 10 by default, however this value can be overridden by specifying a number for .spec.controller.kubeParallelismLimit in the Argo CD CR specification. GITOPS-1255
• The latest Triggers APIs caused Kubernetes build failure due to duplicate entries in the kustomization.yaml when using the kam bootstrap command. The Pipelines and Tekton triggers components have now been updated to v0.24.2 and v0.14.2, respectively, to address this issue. GITOPS-1273
• Persisting RBAC roles and bindings are now automatically removed from the target namespace when the Argo CD instance from the source namespace is deleted. GITOPS-1228
• Previously, when deploying an Argo CD instance into a namespace, the Argo CD instance would change the "managed-by" label to be its own namespace. This fix would make namespaces unlabelled while also making sure the required RBAC roles and bindings are created and deleted for the namespace. GITOPS-1247
• Previously, the default resource request limits on Argo CD workloads, specifically for the repo-server and application controller, were found to be very restrictive. The existing resource quota has now been removed and the default memory limit has been increased to 1024M in the repo server. Please note that this change will only affect new installations; existing Argo CD instance workloads will not be affected. GITOPS-1274

• TP: Technology Preview
• GA: General Availability

• If you do not have read or write access to the openshift-gitops namespace, you can now use the DISABLE_DEFAULT_ARGOCD_INSTANCE environment variable in the GitOps Operator and set the value to TRUE to prevent the default Argo CD instance from starting in the openshift-gitops namespace.
• Resource requests and limits are now configured in Argo CD workloads. Resource quota is enabled in the openshift-gitops namespace. As a result, out-of-band workloads deployed manually in the openshift-gitops namespace must be configured with resource requests and limits and the resource quota may need to be increased.

• Argo CD authentication is now integrated with Red Hat SSO and it is automatically configured with OpenShift 4 Identity Provider on the cluster. This feature is disabled by default. To enable Red Hat SSO, add SSO configuration in ArgoCD CR as shown below. Currently,keycloak is the only supported provider.

  apiVersion: argoproj.io/v1alpha1
  kind: ArgoCD
  metadata:
    name: example-argocd
    labels:
      example: basic
  spec:
    sso:
      provider: keycloak
    server:
      route:
       enabled: true

• You can now define hostnames using route labels to support router sharding. Support for setting labels on the server (argocd server), grafana, and prometheus routes is now available. To set labels on a route, add labels under the route configuration for a server in the ArgoCD CR.

  Example ArgoCD CR YAML to set labels on argocd server

  apiVersion: argoproj.io/v1alpha1
  kind: ArgoCD
  metadata:
    name: example-argocd
    labels:
      example: basic
  spec:
    server:
      route:
       enabled: true
       labels:
         key1: value1
         key2: value2

• The GitOps Operator now automatically grants permissions to Argo CD instances to manage resources in target namespaces by applying labels. Users can label the target namespace with the label argocd.argoproj.io/managed-by: <source-namespace>, where the source-namespace is the namespace where the argocd instance is deployed.

• Previously, if a user created additional instances of Argo CD managed by the default cluster instance in the openshift-gitops namespace, the application responsible for the new Argo CD instance would get stuck in an OutOfSync status. This issue has now been resolved by adding an owner reference to the cluster secret. GITOPS-1025

• When an Argo CD instance is deleted from the source namespace, the argocd.argoproj.io/managed-by labels in the target namespaces are not removed. GITOPS-1228

• Resource quota has been enabled in the openshift-gitops namespace in Red Hat OpenShift GitOps 1.2. This can affect out-of-band workloads deployed manually and workloads deployed by the default Argo CD instance in the openshift-gitops namespace. When you upgrade from Red Hat OpenShift GitOps v1.1.2 to v1.2 such workloads must be configured with resource requests and limits. If there are any additional workloads, the resource quota in the openshift-gitops namespace must be increased.

  Current Resource Quota for openshift-gitops namespace.

  Resource	Requests	Limits
  CPU	6688m	13750m
  Memory	4544Mi	9070Mi

  You can use the below command to update the CPU limits.

  $ oc patch resourcequota openshift-gitops-compute-resources -n openshift-gitops --type='json' -p='[{"op": "replace", "path": "/spec/hard/limits.cpu", "value":"9000m"}]'

  You can use the below command to update the CPU requests.

  $ oc patch resourcequota openshift-gitops-compute-resources -n openshift-gitops --type='json' -p='[{"op": "replace", "path": "/spec/hard/cpu", "value":"7000m"}]

  You can replace the path in the above commands from cpu to memory to update the memory.

• TP: Technology Preview
• GA: General Availability

• The ApplicationSet feature is now added (Technology Preview). The ApplicationSet feature enables both automation and greater flexibility when managing Argo CD applications across a large number of clusters and within monorepos. It also makes self-service usage possible on multitenant Kubernetes clusters.
• Argo CD is now integrated with cluster logging stack and with the OpenShift Container Platform Monitoring and Alerting features.
• Argo CD auth is now integrated with OpenShift Container Platform.
• Argo CD applications controller now supports horizontal scaling.
• Argo CD Redis servers now support high availability (HA).

• Previously, Red Hat OpenShift GitOps did not work as expected in a proxy server setup with active global proxy settings. This issue is fixed and now Argo CD is configured by the Red Hat OpenShift GitOps Operator using fully qualified domain names (FQDN) for the pods to enable communication between components. GITOPS-703
• The Red Hat OpenShift GitOps backend relies on the ?ref= query parameter in the Red Hat OpenShift GitOps URL to make API calls. Previously, this parameter was not read from the URL, causing the backend to always consider the default reference. This issue is fixed and the Red Hat OpenShift GitOps backend now extracts the reference query parameter from the Red Hat OpenShift GitOps URL and only uses the default reference when there is no input reference provided. GITOPS-817
• Previously, the Red Hat OpenShift GitOps backend failed to find the valid GitLab repository. This was because the Red Hat OpenShift GitOps backend checked for main as the branch reference, instead of master in the GitLab repository. This issue is fixed now. GITOPS-768
• The Environments page in the Developer perspective of the OpenShift Container Platform web console now shows the list of applications and the number of environments. This page also displays an Argo CD link that directs you to the Argo CD Applications page that lists all the applications. The Argo CD Applications page has LABELS (for example, app.kubernetes.io/name=appName) that help you filter only the applications of your choice. GITOPS-544

• Red Hat OpenShift GitOps does not support Helm v2 and ksonnet.
• The Red Hat SSO (RH SSO) Operator is not supported in disconnected clusters. As a result, the Red Hat OpenShift GitOps Operator and RH SSO integration is not supported in disconnected clusters.
• When you delete an Argo CD application from the OpenShift Container Platform web console, the Argo CD application gets deleted in the user interface, but the deployments are still present in the cluster. As a workaround, delete the Argo CD application from the Argo CD console. GITOPS-830

• Ensure that the clusters have similar states for configuration, monitoring, and storage
• Recover or recreate clusters from a known state
• Apply or revert configuration changes to multiple OpenShift Container Platform clusters
• Associate templated configuration with different environments
• Promote applications across clusters, from staging to production

Prerequisites

• You have installed the Red Hat OpenShift GitOps Operator in your cluster.

Prerequisites

• You have installed the Red Hat OpenShift GitOps Operator in your cluster.

Prerequisites

• The sample app-spring-petclinic application is deployed and configured.