1 files changed, 13 insertions, 0 deletions
diff --git a/app/graphql/mutations/environments/canary_ingress/update.rb b/app/graphql/mutations/environments/canary_ingress/update.rb
index e4ba08e6dcc..ce24b8842c6 100644
--- a/app/graphql/mutations/environments/canary_ingress/update.rb
+++ b/app/graphql/mutations/environments/canary_ingress/update.rb
@@ -5,6 +5,7 @@ module Mutations
     module CanaryIngress
       class Update < ::Mutations::BaseMutation
         graphql_name 'EnvironmentsCanaryIngressUpdate'
+        description '**Deprecated** This endpoint is planned to be removed along with certificate-based clusters. [See this epic](https://gitlab.com/groups/gitlab-org/configure/-/epics/8) for more information.'
 
         authorize :update_environment
 
@@ -18,7 +19,13 @@ module Mutations
                  required: true,
                  description: 'Weight of the Canary Ingress.'
 
+        REMOVAL_ERR_MSG = 'This endpoint was deactivated as part of the certificate-based' \
+          'kubernetes integration removal. See Epic:' \
+          'https://gitlab.com/groups/gitlab-org/configure/-/epics/8'
+
         def resolve(id:, **kwargs)
+          return { errors: [REMOVAL_ERR_MSG] } if cert_based_clusters_ff_disabled?
+
           environment = authorized_find!(id: id)
 
           result = ::Environments::CanaryIngress::UpdateService
@@ -33,6 +40,12 @@ module Mutations
           id = ::Types::GlobalIDType[::Environment].coerce_isolated_input(id)
           GitlabSchema.find_by_gid(id)
         end
+
+        private
+
+        def cert_based_clusters_ff_disabled?
+          Feature.disabled?(:certificate_based_clusters, default_enabled: :yaml, type: :ops)
+        end
       end
     end
   end