Public bug reported:
I just installed a fresh Ubuntu 20.04 with mysql and munin.
It previously worked quite well with Ubuntu 18.04, but now the default
plugin-conf.d/munin-node file seems to not work anymore for mysql.
Here is the output of it:
# munin-run mysql_commands
DBI
connect('mysql;mysql_read_default_file=/etc/mysql/debian.cnf;mysql_connect_timeout=5','root',...)
failed: Access denied for user 'root'@'localhost' (using password: YES) at
/etc/munin/plugins/mysql_commands line 1071.
Warning: the execution of 'munin-run' via 'systemd-run' returned an error. This
may either be caused by a problem with the plugin to be executed or a failure
of the 'systemd-run' wrapper. Details of the latter can be found via
'journalctl'.
The mysql section in /etc/munin/plugin-conf.d/munin-node looks like:
[mysql*]
user root
env.mysqlopts --defaults-file=/etc/mysql/debian.cnf
env.mysqluser root
env.mysqlconnection
DBI:mysql:mysql;mysql_read_default_file=/etc/mysql/debian.cnf
which will result in an error using e.g. mysql_commands or so.
Changing this section to...
[mysql*]
user root
env.mysqluser debian-sys-maint
env.mysqlconnection
DBI:mysql:mysql;mysql_read_default_file=/etc/mysql/debian.cnf
...did the trick for my installation.
The main problem seems to be the mysqluser set to root even though the
default file contains only a "debian-sys-maint" user.
** Affects: munin (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1880662
Title:
munin node config for mysql not working
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