Constant emails notifications from Munin cpanel

por | 6 diciembre, 2021

First disable

MySQL InnoDB free tablespace» critical alert

Munin service monitor can show a critical alert, «MySQL InnoDB free tablespace».
This warning should be disregarded.

The way to resolve this is to disable the InnoDB monitoring plugin. Remove the /etc/munin/plugins/mysql_innodbsymlink with the following:

rm -i /etc/munin/plugins/mysql_innodb

It will prompt you to remove the symlink, ensure that it mentions the file is a symbolic link:

# rm -i /etc/munin/plugins/mysql_innodb
rm: remove symbolic link ‘/etc/munin/plugins/mysql_innodb’? y

At that point, run the following commands to apply the new configuration:

(If you apply munin-cron without chown munin, it wont work)

systemctl restart munin-node

chown munin:munin /etc/munin/munin.conf   

sudo -u munin /usr/local/cpanel/3rdparty/perl/532/bin/munin-cron


Second, Messages with the following characteristics are received every 5 minutes from Munin ([email protected])

Top stop it, modify /etc/munin/munin.conf

and add or modify this configuration

# Drop [email protected] and [email protected] an email everytime
# something changes (OK -> WARNING, CRITICAL -> OK, etc)
#contact.someuser.command mail -s "Munin notification" [email protected]
#contact.anotheruser.command mail -s "Munin notification" [email protected]
# For those with Nagios, the following might come in handy. In addition,
# the services must be defined in the Nagios server as well.
#contact.nagios.command /usr/bin/send_nsca -c /etc/nsca.conf

contacts me # may be unnecessary and cause warnings mailx -r [email protected] -s "Munin notification ${var:host}" [email protected] warning critical 20

# a simple host tree
    use_node_name yes

Then restart munin