root@billing:/db# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 38
Server version: 5.5.38-35.2-log Percona Server (GPL), Release 35.2, Revision 674

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mysql> use bgbilling
Database changed
mysql> show tables;
Empty set (0,00 sec)

140904 21:33:23 [Note] /usr/sbin/mysqld: Normal shutdown

140904 21:33:23 [Note] Event Scheduler: Purging the queue. 0 events
140904 21:33:23  InnoDB: Starting shutdown...
140904 21:33:28  InnoDB: Shutdown completed; log sequence number 174618890310
140904 21:33:28 [Note] /usr/sbin/mysqld: Shutdown complete

140904 21:33:28 mysqld_safe mysqld from pid file /var/run/mysqld/mysql.pid ended
140904 21:33:29 mysqld_safe Starting mysqld daemon with databases from /db/
140904 21:33:29 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead.
140904 21:33:29 [Note] Plugin 'FEDERATED' is disabled.
140904 21:33:29 InnoDB: The InnoDB memory heap is disabled
140904 21:33:29 InnoDB: Mutexes and rw_locks use GCC atomic builtins
140904 21:33:29 InnoDB: Compressed tables use zlib 1.2.8
140904 21:33:29 InnoDB: Using Linux native AIO
140904 21:33:29 InnoDB: Initializing buffer pool, size = 20.0G
140904 21:33:30 InnoDB: Completed initialization of buffer pool
140904 21:33:30 InnoDB: highest supported file format is Barracuda.
140904 21:33:30  InnoDB: Waiting for the background threads to start
140904 21:33:31 Percona XtraDB (http://www.percona.com) 5.5.38-35.2 started; log sequence number 174618890310
140904 21:33:31 [Note] Event Scheduler: Loaded 0 events
140904 21:33:31 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.5.38-35.2-log'  socket: '/var/run/mysqld/mysql.sock'  port: 3306  Percona Server (GPL), Release 35.2, Revision 674

[mysql]

# CLIENT #
port                           = 3306
socket                         = /var/run/mysqld/mysql.sock

[mysqld]
#innodb_force_recovery = 1

# GENERAL #
user                           = mysql
#default-storage-engine         = X
socket                         = /var/run/mysqld/mysql.sock
pid-file                       = /var/run/mysqld/mysql.pid

# MyISAM #
key-buffer-size                = 32M
myisam-recover                 = FORCE,BACKUP

# SAFETY #
max-allowed-packet             = 16M
max-connect-errors             = 1000000

# DATA STORAGE #
datadir                        = /db/

# BINARY LOGGING #
#log-bin                        = /db/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         = 4096
table-open-cache               = 10240

# 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        = 20G

# LOGGING #
log-error                      = /var/log/mysql/mysql-error.log
log-queries-not-using-indexes  = 1
slow-query-log                 = 1
slow-query-log-file            = /var/log/mysql/db/mysql-slow.log