diff --git a/Vagrantfile b/Vagrantfile
index 82618a0..4239582 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -113,6 +113,46 @@ grains:
   roles:
     - saltlab
     - web
+EOF
+      systemctl restart salt-minion
+    SHELL
+  end
+  config.vm.define "app01" do |app01|
+    app01.vm.box = "peru/ubuntu-20.04-server-amd64"
+    app01.vm.hostname = "app01"
+    app01.vm.network "private_network", ip: "192.168.100.131"
+    app01.vm.provision "shell", inline: <<-SHELL
+      apt-get update
+      apt-get install curl -y
+      curl -o bootstrap-salt.sh -L https://bootstrap.saltproject.io
+      sh bootstrap-salt.sh -A 192.168.100.120 -U
+      cat << EOF > /etc/salt/minion.d/grains.conf
+grains:
+  roles:
+    - acglab
+EOF
+      systemctl restart salt-minion
+    SHELL
+  end
+  config.vm.define "db-users" do |dbusers|
+    dbusers.vm.box = "generic/rocky9"
+    dbusers.vm.hostname = "db-users"
+    dbusers.vm.network "private_network", ip: "192.168.100.132"
+    dbusers.vm.provision "shell", inline: <<-SHELL
+      echo -n "> Waiting for network..."
+      while ! host bootstrap.saltproject.io >/dev/null; do
+        echo -n "."
+        sleep 1
+      done
+      echo "Proceeding!"
+      curl -o bootstrap-salt.sh -L https://bootstrap.saltproject.io
+      # workaround for EL > 9 (https://github.com/saltstack/salt-bootstrap/issues/1903)
+      sh bootstrap-salt.sh -A 192.168.100.120 -U -P -x python3 onedir
+      systemctl enable salt-minion
+      cat << EOF > /etc/salt/minion.d/grains.conf
+grains:
+  roles:
+    - acglab
 EOF
       systemctl restart salt-minion
     SHELL