Percona 数据库

1. Percona介绍

Percona Server由领先的MySQL咨询公司Percona发布。 Percona Server是一款独立的数据库产品，其可以完全与MySQL兼容，可以在不更改代码的情况了下将存储引擎更换成XtraDB 。

Percona团队的最终声明是“Percona Server是由Oracle发布的最接近官方MySQL Enterprise发行版的版本”，因此与其他更改了大量基本核心MySQL代码的分支有所区别。 Percona Server的一个缺点是他们自己管理代码，不接受外部开发人员的贡献，以这种方式确保他们对产品中所包含功能的控制。 Percona提供了高性能XtraDB引擎，还提供PXC高可用解决方案，并且附带了perconatoolkit等DBA管理工具箱

Zabbix 3.0 for percona-server TokuDB

安装perconna源

yum install http://www.percona.com/downloads/percona-release/redhat/0.1-6/percona-release-0.1-6.noarch.rpm

安装依赖

yum install epel-release -y
yum install jemalloc -y
++++++++++++++++++++++++++++++++++++++
TokuDB storage engine requires libjemalloc library 3.3.0 or greater. 
If the version in the distribution repository is lower than that you can use one from Percona Software Repositories or download it from somewhere else.
If the libjemalloc wasn’t installed and enabled before it will be automatically installed when installing the TokuDB 
storage engine package by using the apt` or yum package manager, but Percona Server instance should be restarted for libjemalloc to be loaded. 
This way libjemalloc will be loaded with LD_PRELOAD. 
You can also enable libjemalloc by specifying malloc-lib variable in the [mysqld_safe] section of the my.cnf file:
[mysqld_safe]
malloc-lib= /path/to/jemalloc
+++++++++++++++++++++++++++++++++++++++

关闭大页内存

echo never > /sys/kernel/mm/transparent_hugepage/enabled
echo never > /sys/kernel/mm/transparent_hugepage/defrag
​
+++++++++++++++++++++++++++++++++++
TokuDB won’t be able to start if the transparent huge pages are enabled. 
Transparent huge pages is feature available in the newer kernel versions. You can check if the Transparent huge pages are enabled with:
$ cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never
If transparent huge pages are enabled and you try to start the TokuDB engine you’ll get the following message in you error.log:
Transparent huge pages are enabled, according to /sys/kernel/mm/redhat_transparent_hugepage/enabled
Transparent huge pages are enabled, according to /sys/kernel/mm/transparent_hugepage/enabled
You can disable transparent huge pages permanently by passing transparent_hugepage=never to the kernel in your bootloader
 (NOTE: For this change to take an effect you’ll need to reboot your server).
You can disable the transparent huge pages by running the following command as root (NOTE: Setting this will last only until the server is rebooted):
echo never > /sys/kernel/mm/transparent_hugepage/enabled
echo never > /sys/kernel/mm/transparent_hugepage/defrag
++++++++++++++++++++++++++++++++++++++++

安装percona数据库及tokudb插件

yum install  Percona-Server-tokudb-57.x86_64

启动mysql

systemctl start mysqld

登录并更改密码和过期策略

 登录：

mysql -u root -p
,c!)fa/Cd9kD
更改密码及过期策略：
SET PASSWORD = PASSWORD('Qwe_1234');
ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
flush privileges;

配置root用户远程登录（只是为了测试，不代表生产操作）

grant all privileges on *.* to root@"%" identified by "Qwe_1234";

测试本地登录与远程登录(我数据库IP为10.0.0.12)

mysql -uroot -pQwe_1234mysql -uroot -pQwe_1234 -h 10.0.0.12 -P3306

加载插件

ps_tokudb_admin --enable -uroot -pPassw0rd
INSTALL PLUGIN tokudb SONAME 'ha_tokudb.so';
INSTALL PLUGIN tokudb_file_map SONAME 'ha_tokudb.so';
INSTALL PLUGIN tokudb_fractal_tree_info SONAME 'ha_tokudb.so';
INSTALL PLUGIN tokudb_fractal_tree_block_map SONAME 'ha_tokudb.so';
INSTALL PLUGIN tokudb_trx SONAME 'ha_tokudb.so';
INSTALL PLUGIN tokudb_locks SONAME 'ha_tokudb.so';
INSTALL PLUGIN tokudb_lock_waits SONAME 'ha_tokudb.so';
INSTALL PLUGIN tokudb_background_job_status SONAME 'ha_tokudb.so';
show engines;
show plungins;
SELECT @@tokudb_version;
添加zabbix用户
grant all on zabbix.* to zabbix@'localhost' identified by 'Zabbix_pass123';
创建数据库：
create database zabbix charset utf8;

zabbix安装

[root@oldboy ~]# vim /etc/yum.repos.d/zabbix.repo
[root@oldboy ~]# cat /etc/yum.repos.d/zabbix.repo
[zabbix]
name=Zabbix Official Repository - $basearch
baseurl=https://mirrors.tuna.tsinghua.edu.cn/zabbix/zabbix/3.0/rhel/7/$basearch/
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX
[zabbix-non-supported]
name=Zabbix Official Repository non-supported - $basearch
baseurl=https://mirrors.tuna.tsinghua.edu.cn/zabbix/non-supported/rhel/7/$basearch/
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX
gpgcheck=0
[root@oldboy ~]# yum install -y zabbix-server-mysql zabbix-web-mysql zabbix-agent

修改配置文件

[root@oldboy zabbix]# vim zabbix_server.conf
DBPassword=Zabbix_pass123
vim /etc/httpd/conf.d/zabbix.conf
php_value date.timezone Asia/Shanghai

导入zabbix数据库

[root@oldboy conf.d]# rpm -ql zabbix-server-mysql
/etc/logrotate.d/zabbix-server
/etc/zabbix/zabbix_server.conf
/usr/lib/systemd/system/zabbix-server.service
/usr/lib/tmpfiles.d/zabbix-server.conf
/usr/lib/zabbix/alertscripts
/usr/lib/zabbix/externalscripts
/usr/sbin/zabbix_server_mysql
/usr/share/doc/zabbix-server-mysql-3.0.21
/usr/share/doc/zabbix-server-mysql-3.0.21/AUTHORS
/usr/share/doc/zabbix-server-mysql-3.0.21/COPYING
/usr/share/doc/zabbix-server-mysql-3.0.21/ChangeLog
/usr/share/doc/zabbix-server-mysql-3.0.21/NEWS
/usr/share/doc/zabbix-server-mysql-3.0.21/README
/usr/share/doc/zabbix-server-mysql-3.0.21/create.sql.gz
/usr/share/man/man8/zabbix_server.8.gz
/var/log/zabbix
/var/run/zabbix
[root@oldboy conf.d]#
[root@oldboy conf.d]# cd /usr/share/doc/zabbix-server-mysql-3.0.21/
[root@oldboy zabbix-server-mysql-3.0.21]# gunzip create.sql.gz

 注意：如果使用tokudb，需要将sql脚本中的InnoDB替换为tokudb

mysql -uroot -pQwe_1234

重启zabbix相关服务

[root@oldboy ~]# systemctl restart zabbix-server
[root@oldboy ~]# systemctl restart zabbix-agent
[root@oldboy ~]# systemctl restart httpd

web登录配置zabbix（略）

安装percona监控模板rpm包

 注意：修改采集脚本用户密码

/var/lib/zabbix/percona/scripts
vim get_mysql_stats_wrapper.sh
RES=`HOME=~zabbix mysql -u root -pQwe_1234
vim ss_get_mysql_stats.php
#
$mysql_user = 'root';
$mysql_pass = 'Qwe_1234';

命令行测试监控项

yum install zabbix-get.x86_64 -y
systemctl restart zabbix-agent.service
cat /etc/zabbix/zabbix_agentd.d/userparameter_percona_mysql.conf
zabbix_get -s 127.0.0.1 -k MySQL.Open-files