Turris Omnia /etc/syslog-ng.conf => https://forum.turris.cz/t/is-it-safe-to-disable-watchdog-sh/1913

syslog-ng.conf.patch

diff --git a/syslog-ng.conf b/syslog-ng.conf
index 0836d72..b47f605 100644
--- a/syslog-ng.conf
+++ b/syslog-ng.conf
@@ -21,15 +21,35 @@ filter f_turris_iptables {
 	not match(".*turris[^:]*: .*" value(MESSAGE)) or not level(debug);
 };

+filter f_not_cron {
+	not program(".*cron.*");
+};
+
+filter f_cron {
+	program(".*cron.*");
+};
+
 destination messages {
 	file("/var/log/messages" suppress(5) template("${ISODATE} ${PRIORITY} ${PROGRAM}[${PID}]: ${MSGONLY}\n") log_fifo_size(256));
 };

+destination cron {
+	file("/var/log/cron" suppress(5) template("${ISODATE} ${PRIORITY} ${PROGRAM}[${PID}]: ${MSGONLY}\n") log_fifo_size(256));
+};
+
 log {
 	source(src);
 	source(kernel);
 	filter(f_turris_iptables);
+	filter(f_not_cron);
 	destination(messages);
 };

+log {
+	source(src);
+	source(kernel);
+	filter(f_cron);
+	destination(cron);
+};
+
 include "/etc/syslog-ng.d/";

Hi and thanks for the idea. It would be good also add patch for /etc/logrotate to rotate /var/log/cron also.