Percona toolkit example

Percona toolkit example

pt-variable-advisor localhost --user=root --ask-pass

Just compare in mysqld section
pt-config-diff /etc/my.cnf.d/server.cnf h=localhost --user=root --ask-pass
pt-config-diff /etc/my.cnf.d/server.cnf /etc/my.cnf.d/server1.cnf

pt-summary

pt-mysql-summary --user=root --ask-pass

It takes a long time if your slow log is very big
pt-query-digest /var/log/mysqld/mysql_slow.log --limit 10 --explain 127.0.0.1 --user=root --ask-pass

pt-deadlock-logger

pt-table-usage

pt-index-usage

pt-slave-delay

pt-diskstats

pt-online-schema-change

pt-show-grants

pt-visual-explain