In this release, we added a new way to customize resource behavior through the use of additional subkeys. These subkeys are `resourceHealthChecks`, `resourceIgnoreDifferences` and ` resourceActions`. Each of the subkeys maps directly to their own field in the `argocd-cm` so `resourceHealthChecks` will map to `resource.customizations.health`, `resourceIgnoreDifferences` to `resource.customizations.ignoreDifferences`, and `resourceActions` to `resource.customizations.actions`. Eventually, the old method of customizing resource behavior through `resourceCustomization` (without subkeys) will be deprecated, so users are encouraged to switch to using subkeys. It is the user's responsibility to not provide conflicting resources if they choose to use both methods of resource customizations. Keys for `resourceHealthChecks`, `resourceIgnoreDifferences`, and `resourceActions` are in the form (respectively): `resource.customizations.health.<group_kind>`, `resource.customizations.ignoreDifferences.<group_kind>`, and `resource.customizations.actions.<group_kind>`. The following example defines a custom health check, custom action, and an ignoreDifferences config in the `argocd-cm` ConfigMap. Additionally, `.spec.resourceIgnoreDifferences.all` allows you to apply these specified settings to all resources managed by this Argo CD instance. ``` yaml apiVersion: argoproj.io/v1alpha1 kind: ArgoCD metadata:   name: argocd spec:   resourceIgnoreDifferences:     all:       jsonPointers:         - /spec/replicas       managedFieldsManagers:         - kube-controller-manager     resourceIdentifiers:       - group: admissionregistration.k8s.io         kind: MutatingWebhookConfiguration         customization:           jqPathExpressions:             - '.webhooks[]?.clientConfig.caBundle'       - group: apps         kind: Deployment         customization:           managedFieldsManagers:             - kube-controller-manager           jsonPointers:             - /spec/replicas   resourceHealthChecks:     - group: certmanager.k8s.io       kind: Certificate       check: |         hs = {}         if obj.status ~= nil then           if obj.status.conditions ~= nil then             for i, condition in ipairs(obj.status.conditions) do               if condition.type == "Ready" and condition.status == "False" then                 hs.status = "Degraded"                 hs.message = condition.message                 return hs               end               if condition.type == "Ready" and condition.status == "True" then                 hs.status = "Healthy"                 hs.message = condition.message                 return hs               end             end           end         end         hs.status = "Progressing"         hs.message = "Waiting for certificate"         return hs   resourceActions:     - group: apps       kind: Deployment       action: |         discovery.lua: |         actions = {}         actions["restart"] = {}         return actions         definitions:         - name: restart           # Lua Script to modify the obj           action.lua: |             local os = require("os")             if obj.spec.template.metadata == nil then                 obj.spec.template.metadata = {}             end             if obj.spec.template.metadata.annotations == nil then                 obj.spec.template.metadata.annotations = {}             end             obj.spec.template.metadata.annotations["kubectl.kubernetes.io/restartedAt"] = os.date("!%Y-%m-%dT%XZ")             return obj ```  After applying these changes your `argocd-cm` Configmap should contain the following fields: ``` resource.customizations.ignoreDifferences.all: |   jsonPointers:   - /spec/replicas   managedFieldsManagers:   - kube-controller-manager resource.customizations.ignoreDifferences.admissionregistration.k8s.io_MutatingWebhookConfiguration: |   jqpathexpressions:   - '.webhooks[]?.clientConfig.caBundle' resource.customizations.ignoreDifferences.apps_deployments: |   managedFieldsManagers:   - kube-controller-manager   jsonPointers:   - /spec/replicas resource.customizations.health.certmanager.k8s.io_Certificate: |   hs = {}   if obj.status ~= nil then     if obj.status.conditions ~= nil then       for i, condition in ipairs(obj.status.conditions) do         if condition.type == "Ready" and condition.status == "False" then           hs.status = "Degraded"           hs.message = condition.message           return hs         end         if condition.type == "Ready" and condition.status == "True" then           hs.status = "Healthy"           hs.message = condition.message           return hs         end       end     end   end   hs.status = "Progressing"   hs.message = "Waiting for certificate"   return hs resource.customizations.actions.apps_Deployment: |   discovery.lua: |   actions = {}   actions["restart"] = {}   return actions   definitions:   - name: restart     # Lua Script to modify the obj     action.lua: |       local os = require("os")       if obj.spec.template.metadata == nil then           obj.spec.template.metadata = {}       end       if obj.spec.template.metadata.annotations == nil then           obj.spec.template.metadata.annotations = {}       end       obj.spec.template.metadata.annotations["kubectl.kubernetes.io/restartedAt"] = os.date("!%Y-%m-%dT%XZ")       return obj ```