[http://mmonit.com/monit Monit] (Amahi's watchdog) is a utility for managing and monitoring processes, programs, files, directories and filesystems on a Unix system. It is integrated in Amahi and managed using the '''''Servers''''' section of the '''Settings''' tab.
Monit has an integrated web interface which can exposed using the [http://www.amahi.org/apps/monit -service-manager Monit Web InterfaceService Manager] one-click app. This app provides additional detail about the processes currently running on your HDA.
We will add additional customizations Monit configuration file locations: * Main (monitrc):** Ubuntu - /etc/monit** Fedora - /etc * Services:** Ubuntu - /etc/monit/monit.d** Fedora - /etc/monit.d == Change Hostname ==Edit monitrc and change ''localhost.localdomain'' to this page over timematch your system: check system localhost.localdomain
== Email Notifications ==
This will only work if you have set up your HDA to send emails. The [[Gmail_As_Relay_On_Ubuntu|Gmail as Relay]] tutorial is one option. You can do it in Monit directly by adding the following to monitrc: set mailserver smtp.gmail.com port 587 username "MYUSER" password "MYPASSWORD" using tlsv1 '''NOTE:''' Replace "MYUSER" and "MYPASSWORD" with your Gmail user name and password. Enable email notifications by editing monitrc and adding the following lines (Change as needed to match your system):set mailserver localhostset mail-format { from: monit@localhost }set alert root@localhost
Edit /etc/monit/monitrc and uncomment (remove #) the following lines (Change as needed to match your system):
{{Text|Text=<nowiki>#</nowiki>set mailserver localhost
<nowiki>#</nowiki>set mail-format { from: monit@localhost }
<nowiki>#</nowiki>set alert root@localhost}}
Restart Monit:
{{Code|* Ubuntu sudo /etc/init.d/monit restart* Fedora (root user) systemctl restart monit.service == Change Message Format ==Edit monitrc and add this text (modify as needed): set mail-format { from: monit@localhost subject: [ $SERVICE ] $EVENT - $DATE message: This is an $ACTION: $DESCRIPTION [$SERVICE], tested remotely from $HOST }}
== Change Password ==
Edit Edit /etc/monit/monitrc and change as desired:
{{Text|Text=allow admin:admin}}
Restart Monit:
{{Code|* Ubuntu sudo /etc/init.d/monit restart}}* Fedora (root user) systemctl restart monit.service == Change Access Credentials ==Edit monitrc and change as desired: allow admin:admin
== Update Certificate ==
To change the certificate to match your area, do the following steps as root user (For Ubuntu, prefix the command lines with <code>sudo</code>):
{{Code|cd /var/certs
openssl req -new -x509 -days 365 -nodes -config ./monit.cnf -out /var/certs/monit.pem -keyout /var/certs/monit.pem
openssl gendh 512 >> /var/certs/monit.pem
openssl x509 -subject -dates -fingerprint -noout -in /var/certs/monit.pem
chmod 700 /var/certs/monit.pem}}
Restart Monit:
{{Code|* Ubuntu sudo /etc/init.d/monit restart}}* Fedora (root user) systemctl restart monit.service == Enable Secure access (Fedora) ==Edit monitrc and add below <u>set httpd port 2812 and</u> (line 116): SSL ENABLE PEMFILE /var/certs/monit.pem Create a directory for the certs, then follow "Create New Certificate" guidance: mkdir -p /var/certs == Create New Certificate ==A default certificate is installed by the Amahi application (Ubuntu). To create a new certificate, do the following steps as root user (<b>Ubuntu NOTE:</b> prefix commands with <code>sudo</code> except the second openssl requires the actual '''''root''''' user environment <code>sudo su -</code>): cd /var/certs openssl req -new -x509 -days 365 -nodes -config ./monit.cnf -out /var/certs \ /monit.pem -keyout /var/certs/monit.pem openssl gendh 512 >> /var/certs/monit.pem openssl x509 -subject -dates -fingerprint -noout -in /var/certs/monit.pem chmod 700 /var/certs/monit.pem Restart Monit:* Ubuntu sudo /etc/init.d/monit restart* Fedora (root user) systemctl restart monit.service == Configuration Examples =====Amahi 8 or Greater==='''httpd:'''<pre>check process apache with pidfile "/var/run/httpd/httpd.pid" start program = "/usr/bin/systemctl start httpd.service" stop program = "/usr/bin/systemctl stop httpd.service"</pre> '''mariadb:'''<pre>check process mysql with pidfile "/var/run/mariadb/mariadb.pid" start program = "/usr/bin/systemctl start mariadb.service" stop program = "/usr/bin/systemctl stop mariadb.service"</pre> '''dnsmasq:'''<pre>check process dnsmasq with pidfile /var/run/dnsmasq.pid start program = "/usr/bin/systemctl start dnsmasq.service" stop program = "/usr/bin/systemctl stop dnsmasq.service"</pre> '''sshd:'''<pre>check process sshd with pidfile /var/run/sshd.pid start program "/etc/init.d/sshd start" stop program "/etc/init.d/sshd stop" if failed port 22 protocol ssh then restart</pre> '''postfix:'''<pre> check process postfix with pidfile /var/spool/postfix/pid/master.pid group mail start program = "/etc/init.d/postfix start" stop program = "/etc/init.d/postfix stop" if failed port 25 protocol smtp then restart</pre> '''crond:'''<pre>check process crond with pidfile /var/run/crond.pid group system start program = "/usr/bin/systemctl start crond.service" stop program = "/usr/bin/systemctl stop crond.service" if 5 restarts within 5 cycles then timeout</pre> '''hda-ctl:'''<pre>check process hda-ctl with pidfile /var/run/hda-ctl.pid start program = "/usr/bin/systemctl start hda-ctl.service" stop program = "/usr/bin/systemctl stop hda-ctl.service"</pre> '''syslogd:'''<pre>check process syslog with pidfile /var/run/syslogd.pid start program = "/usr/bin/systemctl start syslog.service" stop program = "/usr/bin/systemctl stop syslog.service" if 5 restarts within 5 cycles then timeout</pre> '''storagespace:'''<pre># add each drive you want to monitor belowcheck filesystem Boot with path /dev/sda1 if space usage > 90% then alertcheck filesystem Root with path /dev/sda3 if space usage > 90% then alertcheck filesystem Shares with path /dev/sda4</pre> '''qbittorrent'''<pre>check process qBittorrent matching "qbittorrent-nox" start program = "/usr/bin/systemctl start qbittorrent-nox@bigfoot.service" stop program = "/usr/bin/systemctl stop qbittorrent-nox@bigfoot.service" if failed host 127.0.0.1 port 8090 type TCP for 2 cycles then restart if 2 restarts within 3 cycles then unmonitor</pre>
'''NOTE===Reference===[http:''' //mmonit.com/wiki/Monit/ConfigurationExamples Monit Configuration Examples]: Covers many common processes that users may want to monitor. For Some minor changes may be needed for Fedora or Ubuntu, the second openssl (openssl gendh) step requires the actual '''root''' user environment (<code>sudo su -</code>).
[[Category:Apps]]
