Makefile: shorten time to 10s

Makefile

@@ -6,23 +6,23 @@ config.json: config.yaml
 	  < config.yaml > config.json
 
 reset: config.json
-	if [ ! -f config.json ]; then \
+	if ! [[ -f config.json && -s config.json ]]; then \
 	  echo "No config.json" && \
 	  exit 1; \
 	fi; \
-	TEMPDIR=$$(ssh akpella "cd /tmp && mktemp -d") && \
-	scp config.json akpella:$${TEMPDIR} && \
-	ssh akpella sudo flatcar-reset \
+	ssh -o ControlMaster=auto -o ControlPath=/tmp/ssh_mux_%h_%p_%r -o ControlPersist=10s -fN akpella && \
+	TEMPDIR=$$(ssh -o ControlPath=/tmp/ssh_mux_%h_%p_%r akpella "cd /tmp && mktemp -d") && \
+	scp -o ControlPath=/tmp/ssh_mux_%h_%p_%r config.json akpella:$${TEMPDIR} && \
+	ssh -o ControlPath=/tmp/ssh_mux_%h_%p_%r akpella \
+	  sudo flatcar-reset \
 	  --ignition-file $${TEMPDIR}/config.json \
 	  --keep-machine-id \
 	  --keep-paths '/etc/ssh/ssh_host_.*' /var/log && \
-	ssh akpella sudo systemctl reboot
+	ssh -o ControlPath=/tmp/ssh_mux_%h_%p_%r akpella \
+	  sudo systemctl reboot && \
+	ssh -o ControlPath=/tmp/ssh_mux_%h_%p_%r -O exit akpella;
 
 update:
 	VER=$$(curl -fsSL https://stable.release.flatcar-linux.net/amd64-usr/current/version.txt | grep FLATCAR_VERSION= | cut -d = -f 2) && \
 	echo $${VER} && \
 	ssh akpella sudo flatcar-update -V $${VER} -A
-
-akpall-ignition.raw:
-	curl -Os https://github.com/akpall/sysext-bakery/blob/akpella/akpall-ignition.raw
-.PHONY: akpall-ignition.raw

config.yaml

@@ -31,3 +31,8 @@ storage:
         inline: |
           127.0.0.1       localhost akpella.lan
           ::1             localhost akpella.lan
+
+systemd:
+  units:
+    - name: systemd-sysupdate.timer
+      enabled: true