diff --git a/slurm-gcp/basic.tfvars b/slurm-gcp/basic.tfvars
index 26885b2..41e8050 100644
--- a/slurm-gcp/basic.tfvars
+++ b/slurm-gcp/basic.tfvars
@@ -81,9 +81,9 @@ login_disk_size_gb = 20
 
 partitions = [
   { name                 = "debug"
-    machine_type         = "n1-standard-2"
+    machine_type         = "c2-standard-4"
     static_node_count    = 0
-    max_node_count       = 10
+    max_node_count       = 5
     zone                 = "us-central1-c"
     image                = "projects/schedmd-slurm-public/global/images/family/schedmd-slurm-20-11-4-hpc-centos-7"
     image_hyperthreads   = false
diff --git a/slurm-gcp/scripts/controller.sh b/slurm-gcp/scripts/controller.sh
new file mode 100644
index 0000000..a8eed2d
--- /dev/null
+++ b/slurm-gcp/scripts/controller.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+
+# Run on class-controller node.
+# gcloud compute ssh class-controller -- < setup.sh
+
+echo "=== setup.sh $(hostname) $(date)"
+
+# TODO: wait for slurm to configure
+# MOTD displays:
+# *** Slurm is currently being configured in the background. ***
+
+echo "+++ configure"
+
+CONTROLLER=$(hostname)
+K8S=class-container-cluster
+
+export ZONE=$(gcloud compute instances list --filter="name=('$CONTROLLER')" --format='value(zone)')
+
+sudo yum install -y kubectl
+gcloud container clusters get-credentials --zone=$ZONE $K8S
+
+kubectl get nodes
+
+echo "+++ spack"
+sudo yum install -y epel-release
+sudo yum install -y git python3 ca-certificates procps curl unzip jq
+sudo yum install -y gcc gcc-c++ make patch file bzip2 xz
+
+sudo install -dv /apps/spack
+sudo chown $USER /apps/spack
+git clone --depth=1 https://github.com/spack/spack.git /apps/spack
+
+
+NODES=$(sinfo -p debug -h -Onodes)
+CPUS=$(sinfo -p debug -h -Ocpus)
+
+cat > build-spack.sh <<EOF
+#!/bin/bash
+echo "+++ \$(hostname) \$(date) \$SLURM_JOB_ID CPUS:\$SLURM_CPU_PER_TASK"
+. /apps/spack/share/spack/setup-env.sh
+srun -n $NODES --exclusive spack install lmod python py-pip miniconda3
+EOF
+sbatch -N $NODES --exclusive ./build-spack.sh
+
+# for I in class-compute-0-{0..7} ; do echo $I ; ssh -o stricthostkeychecking=no $I ps -fe \| grep spack ; done
+
+echo "=== setup.sh $(hostname) $(date) done"
diff --git a/slurm-gcp/setup.sh b/slurm-gcp/setup.sh
new file mode 100755
index 0000000..4803b4e
--- /dev/null
+++ b/slurm-gcp/setup.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+gcloud compute ssh class-controller -- < scripts/controller.sh