improve pveupdate with random start time

this is important to avoid that all PVE nodes start the update procedure at the same time

bin/Makefile

@@ -17,6 +17,7 @@ SCRIPTS =  			\
 	pveversion		\
 	pvemailforward.pl	\
 	pveupgrade		\
+	pveupdate		\
 	pveperf
 
 SERVICE_MANS = $(addsuffix .8, ${SERVICES})

bin/cron/Makefile

-SUBDIRS = daily
-
-all: ${SUBDIRS}
-
-%:
-	set -e && for i in ${SUBDIRS}; do ${MAKE} -C $$i $@; done

bin/cron/daily/Makefile

-include ../../../defines.mk
-
-all:
-
-.PHONY: install 
-install: pve
-	install -d ${CRONDAILYDIR}
-	install -m 0755 pve ${CRONDAILYDIR}
-
-.PHONY: distclean
-distclean: clean
-
-.PHONY: clean
-clean:
-	rm -rf *~

debian/conffiles

@@ -3,7 +3,6 @@
 /etc/init.d/pveproxy
 /etc/init.d/spiceproxy
 /etc/init.d/pvestatd
-/etc/cron.daily/pve
 /etc/vz/vznet.conf
 /etc/vzdump.conf
 /etc/logrotate.d/pve

debian/postinst

@@ -43,6 +43,21 @@ case "$1" in
     # remove old APL dir
     rm -rf /var/lib/pve-manager/apl-available
 
+    # remove old cron.daily update job to randomize it
+    if test -e /etc/cron.daily/pve; then
+	echo "Remove old update script from cron.daily"
+	rm /etc/cron.daily/pve
+    fi
+
+    # create new daily randomize update cronjob if not exist
+    if !(test -e /etc/cron.d/pveupdate); then
+	MIN="$(shuf -i 0-59 -n 1)"
+
+	HOUR="$(shuf -i 6-10 -n 1)"
+	echo "Create cron job for daily update"
+	printf " ${MIN} ${HOUR} * * * root /usr/bin/pveupdate\n\n" > /etc/cron.d/pveupdate
+    fi
+
     if test ! -e /var/lib/pve-manager/apl-info/download.proxmox.com; then
 	mkdir -p /var/lib/pve-manager/apl-info
 	cp /usr/share/doc/pve-manager/aplinfo.dat /var/lib/pve-manager/apl-info/download.proxmox.com