crontab should include daily/monthly/... run-parts

cloud-init.yaml

@@ -151,11 +151,29 @@ write_files:
       @include "/etc/syslog-ng/conf.d/*.conf"
     path: /etc/syslog-ng/syslog-ng.conf
   - content: |
-      # /etc/crontab: configuration file for cron
+      # /etc/crontab: system-wide crontab
+      # Unlike any other crontab you don't have to run the `crontab'
+      # command to install the new version when you edit this file
+      # and files in /etc/cron.d. These files also have username fields,
+      # that none of the other crontabs do.
 
-      # See cron(8) and crontab(5) for details.
+      SHELL=/bin/sh
+      # You can also override PATH, but by default, newer versions inherit it from the environment
+      #PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+
+      # Example of job definition:
+      # .---------------- minute (0 - 59)
+      # |  .------------- hour (0 - 23)
+      # |  |  .---------- day of month (1 - 31)
+      # |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
+      # |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
+      # |  |  |  |  |
+      # *  *  *  *  * user-name command to be executed
+      17 *	* * *	root    cd / && run-parts --report /etc/cron.hourly
+      25 6	* * *	root	test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
+      47 6	* * 7	root	test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
+      52 6	1 * *	root	test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
 
-      # m h dom mon dow user command
       23 12 * * * root /root/launch_container_demo.sh && sleep 1 && /root/demo_initialize_data.sh
       23 0 * * * root /root/launch_container_demo.sh && sleep 1 && /root/demo_initialize_data.sh
     path: /etc/crontab