Hello.
I want to migrate from mysql-server to Percona server.
My actions:
service mysqld stop
rpm --nodeps -e mysql-server mysql
yum install Percona-Server-server-57 Percona-Server-client-57 Percona-Server-shared-57 Percona-Server-shared-compat percona-toolkit xtrabackup perl-DBD-MySQL php-mysql MySQL-python
Затем, я заменил сокет с /var/lib/mysqld/mysqld.sock на /var/lib/mysql/mysql.sock
и pid-file = /var/run/mysql/mysql.pid на pid_file = /var/run/mysql/mysql.pid
service mysql start
And the server is running.
Next, I want to optimize the server and create a config file using percona tools for mysql.
My resulting configuration:
[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/
BINARY LOGGING
log-bin = /var/lib/mysql/mysql-bin
expire-logs-days = 14
sync-binlog = 1
CACHES AND LIMITS
tmp-table-size = 32M
max-heap-table-size = 32M
query-cache-type = 0
query-cache-size = 0
max-connections = 500
thread-cache-size = 50
open-files-limit = 65535
table-definition-cache = 1024
table-open-cache = 2048
INNODB
innodb-flush-method = O_DIRECT
innodb-log-files-in-group = 2
innodb-log-file-size = 512M
innodb-flush-log-at-trx-commit = 1
innodb-file-per-table = 1
innodb-buffer-pool-size = 432P
LOGGING
log-error = /var/lib/mysql/mysql-error.log
log-queries-not-using-indexes = 1
slow-query-log = 1
slow-query-log-file = /var/lib/mysql/mysql-slow.log
When I try to restart mysql, I receive an error
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)
Socket file and pid-file no. If I create them manually, I get the same error, and no file again.