diff --git a/charts/openstack-hypervisor-operator/templates/deployment.yaml b/charts/openstack-hypervisor-operator/templates/deployment.yaml
index b3fbc52c..0452645e 100644
--- a/charts/openstack-hypervisor-operator/templates/deployment.yaml
+++ b/charts/openstack-hypervisor-operator/templates/deployment.yaml
@@ -47,6 +47,10 @@ spec:
           value: {{ quote .Values.controllerManager.manager.env.labelSelector }}
         - name: AGENT_NAMESPACES
           value: {{ quote .Values.controllerManager.manager.env.agentNamespaces }}
+        - name: EVICTION_CONCURRENCY
+          value: {{ quote .Values.controllerManager.manager.env.evictionConcurrency }}
+        - name: EVICTION_TRAIT_CONCURRENCY
+          value: {{ quote .Values.controllerManager.manager.env.evictionTraitConcurrency }}
         - name: KUBERNETES_CLUSTER_DOMAIN
           value: {{ quote .Values.kubernetesClusterDomain }}
         - name: GOMEMLIMIT
diff --git a/charts/openstack-hypervisor-operator/values.yaml b/charts/openstack-hypervisor-operator/values.yaml
index cc4f686c..22f61295 100644
--- a/charts/openstack-hypervisor-operator/values.yaml
+++ b/charts/openstack-hypervisor-operator/values.yaml
@@ -8,6 +8,8 @@ controllerManager:
     - --certificate-issuer-name=$(CERTIFICATE_ISSUER_NAME)
     - --label-selector=$(LABEL_SELECTOR)
     - --agent-namespaces=$(AGENT_NAMESPACES)
+    - --eviction-concurrency=$(EVICTION_CONCURRENCY)
+    - --eviction-trait-concurrency=$(EVICTION_TRAIT_CONCURRENCY)
     containerSecurityContext:
       allowPrivilegeEscalation: false
       capabilities:
@@ -18,6 +20,12 @@ controllerManager:
       certificateNamespace: monsoon3
       labelSelector: ""
       agentNamespaces: "monsoon3"
+      # Default maximum number of VM migrations to run concurrently while draining a hypervisor.
+      # Keep this quoted because it is rendered as an environment variable.
+      evictionConcurrency: "1"
+      # Optional comma-separated TRAIT=N overrides for per-host migration concurrency.
+      # The lowest matching trait limit wins, e.g. "CUSTOM_HANA_EXCLUSIVE_HOST=1,CUSTOM_FOO=2".
+      evictionTraitConcurrency: ""
       osAuthUrl: ""
       osProjectDomainName: ""
       osProjectName: ""