It's time to replace MySQL with PERCONADB.

Percona database server is an enhanced version of MySQL, and replacing MySQL is not complicated.

first, the characteristics of perconadb

1) Faster query speed, better data consistency

2) server operation and its stability

3) can delay sharding, or avoid sharding

4) The cost to pay is lower than MySQL

5) Less time spent on optimization and management

6) Higher uptime

7) Do not rule out speculation

There are some features:

1) A larger number of INFORMATION_SCHEMA tables

2) Greater number of global performance parameters (global performance) and status counters (state Counters)

3) per index performance counter

4) per User performance counter

5) per client performance counter

6) High-precision process list timing

7) Fast Check algorithm

8) Buffer pool pre-loading

9) Supports Flash buffering

10) You can import tables from different servers

Second, replace MySQL with perconadb

1) Ensure that the current data is backed up

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1. # Cp-rf/var/lib/mysql/var/lib/mysql-orig
2. # Mv/etc/my.cnf/etc/my.cnf.orig

2) Disable the target so that cpanel does not process MySQL updates

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1. #/scripts/update_local_rpm_versions--edit target_settings. MYSQL50 uninstalled
2. #/scripts/update_local_rpm_versions--edit target_settings. MySQL51 uninstalled
3. #/scripts/update_local_rpm_versions--edit target_settings. MySQL55 uninstalled

3) Remove all MySQL RPM packages from the server

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1. #/scripts/check_cpanel_rpms--fix--targets=mysql50,mysql51,mysql55

The above command uninstalls the MySQL RPM installation from the server

4) Create a database configuration file Perconadb.repo

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1. # Vi/etc/yum.repos.d/perconadb.repo

Add the following content:

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1. [Percona]
2. Name = CentOS $releasever-percona
3. Baseurl=http://repo.percona.com/centos/$releasever/os/$basearch/
4. Enabled = 1
5. Gpgkey = http://www.percona.com/redir/downloads/percona-release/rpm-gpg-key-percona
6. Gpgcheck = 1

5) Remove PHP from the "exclude" list within the/etc/yum.conf file

6) Install Perconadb-server, perconadb-client and Perconadb-devel

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1. # yum Install percona-server-client-55 percona-server-server-55 percona-server-devel-55

7) Start Percona MySQL

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1. #/etc/init.d/mysql Start

8) then run Percona MySQL upgrade

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1. # Mysql_upgrade

9) Restart Percona MySQL
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1. #/etc/init.d/mysql Restart

10) Add PHP back to the "exclude" list in the/etc/yum.conf file

11) Re-compiling Apache with PHP

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1. #/scripts/easyapache--build
2. /etc/init.d/mysql status
3. success! MySQL (Percona Server) running (9425)

Ok!

It's time to replace MySQL with PERCONADB.