diff --git a/utils/kargo/postinstall.yml b/utils/kargo/postinstall.yml
index c302bb1..a25a40e 100644
--- a/utils/kargo/postinstall.yml
+++ b/utils/kargo/postinstall.yml
@@ -1,5 +1,5 @@
 ---
-- hosts: kube-master[0]
+- hosts: k8s-cluster
   roles:
     - { role: postinstall, tags: postinstall }
 
diff --git a/utils/kargo/roles/postinstall/tasks/main.yml b/utils/kargo/roles/postinstall/tasks/main.yml
index 9ed5228..3b886c2 100644
--- a/utils/kargo/roles/postinstall/tasks/main.yml
+++ b/utils/kargo/roles/postinstall/tasks/main.yml
@@ -16,6 +16,9 @@
 
 - name: Test networking connectivity
   shell: "bash {{ bin_dir }}/test_networking.sh"
+  environment:
+    ADMIN_IP: "{{ hostvars[groups['kube-master'][0]]['ip'] | default(hostvars[groups['kube-master'][0]]['ansible_default_ipv4']['address']) }}"
+    SLAVE_IPS: "{{ ip }}"
   changed_when: false
   become: no
 
@@ -27,7 +30,11 @@
     group: root
     mode: 0644
   register: dashboard
+  delegate_to: "{{groups['kube-master'][0]}}"
+  run_once: true
 
 - name: Create Kubernetes dashboard
   command: "{{ bin_dir }}/kubectl create -f /etc/kubernetes/kubernetes-dashboard.yml"
   when: dashboard.changed
+  delegate_to: "{{groups['kube-master'][0]}}"
+  run_once: true