https://tools.percona.com/wizard/
# Generated by Percona Configuration Wizard (http://tools.percona.com/) version REL5-20120208
# Configuration name server generated for at 2017-04-26 15:24:40
[mysql]
# CLIENT #
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
# GENERAL #
user = mysql
default-storage-engine = InnoDB
socket = /var/lib/mysql/mysql.sock
pid-file = /var/lib/mysql/mysql.pid
# MyISAM #
key-buffer-size = 32M
myisam-recover = FORCE,BACKUP
# SAFETY #
max-allowed-packet = 16M
max-connect-errors = 1000000
# DATA STORAGE #
datadir = /var/lib/mysql/
create user ‘root’@'%' identified by ‘password’; grant ALL PRIVILEGES on *.* to ‘root’@'%' with grant option;
flush privileges;
if error have root@localhost
delete from mysql.user where user=‘root’;
flush privileges;
create user ‘root’@'%' identified by ‘password’;
grant ALL PRIVILEGES on *.* to ‘root’@'%' with grant option;
select user, host from user;
show grants for ‘root’@'%';
FLUSH PRIVILEGES;
=====restore root privileges=====
http://stackoverflow.com/questions/1709078/how-can-i-restore-the-mysql-root-user-s-full-privileges
http://tech.noredink.com/post/133347435578/optimizing-mysql-for-high-concurrency-on-amazon
Looking for concurrency bottlenecks
performance schema
List the total maximum wait by event inside of InnoDB
SELECT EVENT_NAME, SUM_TIMER_WAIT/1000000000 WAIT_MS, COUNT_STAR FROM performance_schema.events_waits_summary_global_by_event_name ORDER BY SUM_TIMER_WAIT DESC, COUNT_STAR DESC LIMIT 30;
List current and last wait events on InnoDB. -- “what the current, or last completed, wait for each session was, and for exactly how long they waited” SELECT NAME, IF(PPS.
https://medium.com/devoops-and-universe/database-performance-aws-vs-bare-metal-452f64481b07
https://mariadb.com/kb/en/mariadb/performance-schema-overview/
http://www.heidisql.com/
