Merge pull request #52770 from DebarghoGhosh/configure-resource-quota-3818

RHDEVDOCS-3818 - Added resource limit

Author: gabriel-rh

_topic_maps/_topic_map.yml

@@ -1725,6 +1725,8 @@ Topics:
     File: configuring-sso-for-argo-cd-using-keycloak
   - Name: Configuring Argo CD RBAC
     File: configuring-argo-cd-rbac
+  - Name: Configuring Resource Quota
+    File: configuring-resource-quota
   - Name: Running Control Plane Workloads on Infra nodes
     File: run-gitops-control-plane-workload-on-infra-nodes
   - Name: Sizing requirements for GitOps Operator

cicd/gitops/configuring-resource-quota.adoc

@@ -0,0 +1,14 @@
+:_content-type: ASSEMBLY
+[id="configuring-resource-quota"]
+= Configuring resource quota or requests
+include::_attributes/common-attributes.adoc[]
+:context: configuring-resource-quota
+
+toc::[]
+
+[role="_abstract"]
+With the Argo CD Custom Resource, you can create, update, and delete resource requests and limits for Argo CD workloads. 
+
+include::modules/configure-workloads.adoc[leveloffset=+1]
+include::modules/patch-argocd-instance.adoc[leveloffset=+1]
+include::modules/remove-resource-requirements.adoc[leveloffset=+1]

modules/configure-workloads.adoc

@@ -0,0 +1,72 @@
+// Module is included in the following assemblies:
+//
+// * cicd/gitops/configuring-resource-quota.adoc
+
+:_content-type: PROCEDURE
+[id="configuring-workloads_{context}"]
+= Configuring workloads with resource requests and limits
+
+[role="_abstract"]
+You can create Argo CD custom resource workloads with resource requests and limits. This is required when you want to deploy the Argo CD instance in a namespace that is configured with resource quotas. 
+
+The following Argo CD instance deploys the Argo CD workloads such as `Application Controller`, `ApplicationSet Controller`, `Dex`, `Redis`,`Repo Server`, and `Server` with resource requests and limits. You can also create the other workloads with resource requirements in the same manner.
+
+[source,yaml]
+----
+apiVersion: argoproj.io/v1alpha1
+kind: ArgoCD
+metadata:
+  name: example
+spec:
+  server:
+    resources:
+      limits:
+        cpu: 500m
+        memory: 256Mi
+      requests:
+        cpu: 125m
+        memory: 128Mi
+    route:
+      enabled: true
+  applicationSet:
+    resources:
+      limits:
+        cpu: '2'
+        memory: 1Gi
+      requests:
+        cpu: 250m
+        memory: 512Mi
+  repo:
+    resources:
+      limits:
+        cpu: '1'
+        memory: 512Mi
+      requests:
+        cpu: 250m
+        memory: 256Mi
+  dex:
+    resources:
+      limits:
+        cpu: 500m
+        memory: 256Mi
+      requests:
+        cpu: 250m
+        memory: 128Mi
+  redis:
+    resources:
+      limits:
+        cpu: 500m
+        memory: 256Mi
+      requests:
+        cpu: 250m
+        memory: 128Mi
+  controller:
+    resources:
+      limits:
+        cpu: '2'
+        memory: 2Gi
+      requests:
+        cpu: 250m
+        memory: 1Gi
+----
+

modules/patch-argocd-instance.adoc

@@ -0,0 +1,21 @@
+// Module is included in the following assemblies:
+//
+// * cicd/gitops/configuring-resource-quota.adoc
+
+:_content-type: PROCEDURE
+[id="patch-argocd-instance_{context}"]
+= Patching Argo CD instance to update the resource requirements
+
+[role="_abstract"]
+You can update the resource requirements for all or any of the workloads post installation. 
+
+.Procedure
+Update the `Application Controller` resource requests of an Argo CD instance in the Argo CD namespace.
+
+[source,terminal]
+----
+oc -n argocd patch argocd example --type='json' -p='[{"op": "replace", "path": "/spec/controller/resources/requests/cpu", "value":"1"}]'
+
+oc -n argocd patch argocd example --type='json' -p='[{"op": "replace", "path": "/spec/controller/resources/requests/memory", "value":"512Mi"}]'
+----
+

modules/remove-resource-requirements.adoc

@@ -0,0 +1,22 @@
+// Module is included in the following assemblies:
+//
+// * cicd/gitops/configuring-resource-quota.adoc
+
+:_content-type: PROCEDURE
+[id="remove-resource-requirements_{context}"]
+= Removing resource requests
+
+[role="_abstract"]
+You can also remove resource requirements for all or any of your workloads after installation.
+
+.Procedure
+Remove the `Application Controller` resource requests of an Argo CD instance in the Argo CD namespace.
+
+[source,terminal]
+----
+oc -n argocd patch argocd example --type='json' -p='[{"op": "remove", "path": "/spec/controller/resources/requests/cpu"}]'
+
+oc -n argocd argocd patch argocd example --type='json' -p='[{"op": "remove", "path": "/spec/controller/resources/requests/memory"}]'
+
+----
+