Allow suppressing watchdog start notification.

The default behavior is still the old one (send a notifcation when the
watchdog is started), but this notification can now be suppressed by
setting WATCHDOG_NOTIFY_START=n.

data/Dockerfiles/watchdog/watchdog.sh

@@ -746,7 +746,7 @@ olefy_checks() {
 }
 
 # Notify about start
-if [[ ! -z ${WATCHDOG_NOTIFY_EMAIL} ]]; then
+if [[ ! -z ${WATCHDOG_NOTIFY_EMAIL} ]] && [[ ${WATCHDOG_NOTIFY_START} =~ ^([yY][eE][sS]|[yY])+$ ]]; then
   mail_error "watchdog-mailcow" "Watchdog started monitoring mailcow."
 fi
 

docker-compose.yml

@@ -488,6 +488,7 @@ services:
         - USE_WATCHDOG=${USE_WATCHDOG:-n}
         - WATCHDOG_NOTIFY_EMAIL=${WATCHDOG_NOTIFY_EMAIL:-}
         - WATCHDOG_NOTIFY_BAN=${WATCHDOG_NOTIFY_BAN:-y}
+        - WATCHDOG_NOTIFY_START=${WATCHDOG_NOTIFY_START:-y}
         - WATCHDOG_SUBJECT=${WATCHDOG_SUBJECT:-Watchdog ALERT}
         - WATCHDOG_EXTERNAL_CHECKS=${WATCHDOG_EXTERNAL_CHECKS:-n}
         - WATCHDOG_MYSQL_REPLICATION_CHECKS=${WATCHDOG_MYSQL_REPLICATION_CHECKS:-n}

generate_config.sh

@@ -401,6 +401,9 @@ USE_WATCHDOG=y
 # Notify about banned IP (includes whois lookup)
 WATCHDOG_NOTIFY_BAN=n
 
+# Send a notification when the watchdog is started.
+WATCHDOG_NOTIFY_START=y
+
 # Subject for watchdog mails. Defaults to "Watchdog ALERT" followed by the error message.
 #WATCHDOG_SUBJECT=
 

update.sh

@@ -449,6 +449,7 @@ CONFIG_ARRAY=(
   "USE_WATCHDOG"
   "WATCHDOG_NOTIFY_EMAIL"
   "WATCHDOG_NOTIFY_BAN"
+  "WATCHDOG_NOTIFY_START"
   "WATCHDOG_EXTERNAL_CHECKS"
   "WATCHDOG_SUBJECT"
   "SKIP_CLAMD"
@@ -636,6 +637,12 @@ for option in ${CONFIG_ARRAY[@]}; do
       echo '# Notify about banned IP. Includes whois lookup.' >> mailcow.conf
       echo "WATCHDOG_NOTIFY_BAN=y" >> mailcow.conf
     fi
+  elif [[ ${option} == "WATCHDOG_NOTIFY_START" ]]; then
+    if ! grep -q ${option} mailcow.conf; then
+      echo "Adding new option \"${option}\" to mailcow.conf"
+      echo '# Send a notification when the watchdog is started.' >> mailcow.conf
+      echo "WATCHDOG_NOTIFY_START=y" >> mailcow.conf
+    fi
   elif [[ ${option} == "WATCHDOG_SUBJECT" ]]; then
     if ! grep -q ${option} mailcow.conf; then
       echo "Adding new option \"${option}\" to mailcow.conf"