diff --git a/charts/cert-manager/templates/deployment.yaml b/charts/cert-manager/templates/deployment.yaml
index b1af927..453e823 100644
--- a/charts/cert-manager/templates/deployment.yaml
+++ b/charts/cert-manager/templates/deployment.yaml
@@ -66,6 +66,9 @@
       {{- with .Values.global.priorityClassName }}
       priorityClassName: {{ . | quote }}
       {{- end }}
+      {{- if (hasKey .Values.global "hostUsers") }}
+      hostUsers: {{ .Values.global.hostUsers }}       
+      {{- end }}
       {{- with .Values.securityContext }}
       securityContext:
         {{- toYaml . | nindent 8 }}
@@ -209,7 +212,9 @@
             failureThreshold: {{ .failureThreshold }}
           {{- end }}
           {{- end }}
-      {{- with .Values.nodeSelector }}
+      {{- $nodeSelector := .Values.global.nodeSelector | default dict }}
+      {{- $nodeSelector = merge $nodeSelector (.Values.nodeSelector | default dict) }}
+      {{- with $nodeSelector }}
       nodeSelector:
         {{- range $key, $value := . }}
         {{ $key }}: {{ $value | quote }}
@@ -236,4 +241,4 @@
       {{- end }}
       {{- with .Values.hostAliases }}
       hostAliases: {{ toYaml . | nindent 8 }}
-      {{- end }}
\ No newline at end of file
+      {{- end }}