Version v5, graceful stop, email alert and better doc

1 files changed, 31 insertions, 5 deletions

diff --git a/start-munin.sh b/start-munin.sh
index b0fb3b0..66a2d4b 100644
--- a/start-munin.sh
+++ b/start-munin.sh
@@ -3,21 +3,41 @@ NODES=${NODES:-}
 MUNIN_USER=${MUNIN_USER:-user}
 MUNIN_PASSWORD=${MUNIN_PASSWORD:-password}
 
-htpasswd -b -c /etc/munin/htpasswd.users "$MUNIN_USER" "$MUNIN_PASSWORD"
+if [ -n "${SMTP_USERNAME}" -a -n "${SMTP_PASSWORD}" -a -n "${SMTP_HOST}" -a -n "${SMTP_PORT}" ] ; then
+  cat > /var/lib/munin/.mailrc <<EOF
+  set smtp-use-starttls
+  set ssl-verify=ignore
+  set smtp=smtp://${SMTP_HOST}:${SMTP_PORT}
+  set smtp-auth=login
+  set smtp-auth-user=${SMTP_USERNAME}
+  set smtp-auth-password=${SMTP_PASSWORD}
+EOF
+fi
+
+grep -q 'contact.mail' /etc/munin/munin.conf; rc=$?
+if  [ $rc -ne 0 -a -n "${ALERT_RECIPIENT}" -a -n "${ALERT_SENDER}" ] ; then
+  echo "Setup alert email from ${ALERT_SENDER} to ${ALERT_RECIPIENT}"
+  echo 'contact.mail.command mail -r '${ALERT_SENDER}' -s "[${var:group};${var:host}] -> ${var:graph_title} -> warnings: ${loop<,>:wfields  ${var:label}=${var:value}} / criticals: ${loop<,>:cfields  ${var:label}=${var:value}}"' ${ALERT_RECIPIENT} >> /etc/munin/munin.conf
+fi
+
+[ -e /etc/munin/htpasswd.users ] || htpasswd -b -c /etc/munin/htpasswd.users "$MUNIN_USER" "$MUNIN_PASSWORD"
 
 # generate node list
 for NODE in $NODES
 do
-    NAME=`echo $NODE | cut -d ":" -f1`
-    HOST=`echo $NODE | cut -d ":" -f2`
+  NAME=`echo $NODE | cut -d ":" -f1`
+  HOST=`echo $NODE | cut -d ":" -f2`
+  if ! grep -q $HOST /etc/munin/munin.conf ; then
     cat << EOF >> /etc/munin/munin.conf
 [$NAME]
     address $HOST
     use_node_name yes
 
 EOF
+    fi
 done
 
+[ -d /var/cache/munin/www ] || mkdir /var/cache/munin/www
 # placeholder html to prevent permission error
 if [ ! -e /var/cache/munin/www/index.html ]; then
 cat << EOF > /var/cache/munin/www/index.html
@@ -30,7 +50,7 @@ Munin has not run yet.  Please try again in a few moments.
 </body>
 </html>
 EOF
-chown munin:munin /var/cache/munin/www/index.html
+chown munin:munin -R /var/cache/munin/www
 chmod g+w /var/cache/munin/www/index.html
 fi
 
@@ -46,4 +66,10 @@ echo $NODES
 /usr/sbin/nginx
 # show logs
 echo "Tailing /var/log/syslog..."
-tail -F /var/log/syslog /var/log/munin/munin-update.log
+tail -F /var/log/syslog /var/log/munin/munin-update.log & pid=$!
+
+sleep 1
+
+trap "kill $pid $(cat /var/run/munin/munin-node.pid) $(cat /var/run/nginx.pid) $(cat /var/run/crond.pid) $(cat /var/run/rsyslogd.pid)" TERM QUIT INT
+
+wait