diff --git a/hco/env/ctrl1-wrkr3.yaml b/hco/env/ctrl1-wrkr3.yaml
new file mode 100644
index 0000000..b11a8cc
--- /dev/null
+++ b/hco/env/ctrl1-wrkr3.yaml
@@ -0,0 +1,9 @@
+resource_registry:
+  "VMInstances": ../fragments/VMInstance.yaml
+
+parameters:
+  controllers_size: 1
+  workers_size: 3
+  image: jammy-server-cloudimg-amd64-20240417
+  public_net_id: c3799996-dc8e-4477-a309-09ea6dd71946
+  cluster_public_key: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCp0evjOaK8c8SKYK4r2+0BN7g+8YSvQ2n8nFgOURCyvkJqOHi1qPGZmuN0CclYVdVuZiXbWw3VxRbSW3EH736VzgY1U0JmoTiSamzLHaWsXvEIW8VCi7boli539QJP0ikJiBaNAgZILyCrVPN+A6mfqtacs1KXdZ0zlMq1BPtFciR1JTCRcVs5vP2Wwz5QtY2jMIh3aiwkePjMTQPcfmh1TkOlxYu5IbQyZ3G1ahA0mNKI9a0dtF282av/F6pwB/N1R1nEZ/9VtcN2I1mf1NW/tTHEEcTzXYo1R/8K9vlqAN8QvvGLZtZduGviNVNoNWvoxaXxDt8CPv2B2NCdQFZp