Install earlyoom at gce instance startup

net/gce.sh

@@ -206,23 +206,65 @@ create)
 
   $metricsWriteDatapoint "testnet-deploy net-create-begin=1"
 
-  echo "Network composition:"
-  echo "Leader = $leaderMachineType (GPU=${leaderAccelerator:-none})"
-  echo "Validators = $validatorNodeCount x $validatorMachineType (GPU=${validatorAccelerator:-none})"
-  echo "Client(s) = $clientNodeCount x $clientMachineType (GPU=${clientAccelerator:-none})"
-  echo ==================================================================
-  echo
+  printNetworkInfo() {
+    cat <<EOF
+========================================================================================
+
+Network composition:
+  Leader = $leaderMachineType (GPU=${leaderAccelerator:-none})
+  Validators = $validatorNodeCount x $validatorMachineType (GPU=${validatorAccelerator:-none})
+  Client(s) = $clientNodeCount x $clientMachineType (GPU=${clientAccelerator:-none})
+
+========================================================================================
+
+EOF
+  }
+  printNetworkInfo
+
+  declare startupScript="$netConfigDir"/gce-startup-script.sh
+  cat > "$startupScript" <<EOF
+#!/bin/bash -ex
+# autogenerated at $(date)
+
+cat > /etc/motd <<EOM
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+  This instance has not been fully configured.
+  See "startup-script" log messages in /var/log/syslog for status:
+    $ sudo cat /var/log/syslog | grep startup-script
+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+EOM
+
+USER=\$(id -un)
+
+$(
+  cd "$here"/scripts/
+  cat \
+    disable-background-upgrades.sh \
+    install-earlyoom.sh \
+    install-rsync.sh \
+    install-libssl-compatability.sh \
+)
+
+cat > /etc/motd <<EOM
+$(printNetworkInfo)
+EOM
+
+EOF
+
   gcloud_CreateInstances "$prefix-leader" 1 "$zone" \
     "$imageName" "$leaderMachineType" "$leaderBootDiskSize" "$leaderAccelerator" \
-    "$here/remote/remote-startup.sh" "$leaderAddress" \
+    "$startupScript" "$leaderAddress"
 
   gcloud_CreateInstances "$prefix-validator" "$validatorNodeCount" "$zone" \
     "$imageName" "$validatorMachineType" "$validatorBootDiskSize" "$validatorAccelerator" \
-    "$here/remote/remote-startup.sh" ""
+    "$startupScript" ""
+
   if [[ $clientNodeCount -gt 0 ]]; then
     gcloud_CreateInstances "$prefix-client" "$clientNodeCount" "$zone" \
       "$imageName" "$clientMachineType" "$clientBootDiskSize" "$clientAccelerator" \
-      "$here/remote/remote-startup.sh" ""
+      "$startupScript" ""
   fi
 
   $metricsWriteDatapoint "testnet-deploy net-create-complete=1"