在 CentOS 7 CPanel 服务器上安装 MariaDB 10

MariaDB 是一个增强版的、开源的 MysqL 替代品。它主要由 MariaDB 社区在维护，采用 GPL v2 授权许可。软件的安全性是 MariaDB 开发者的主要焦点。他们保持为 MariaDB 的每个版本发布安全补丁。当有任何安全问题被发现时，开发者会尽快修复并推出 MariaDB 的新版本。

MariaDB 的优势

完全开源
快速且透明的安全版本
与 MysqL 高度兼容
性能更好
比 MysqL 的存储引擎多

在这篇文章中，我将谈论关于如何在 CentOS7 CPanel 服务器上升级 MysqL5.5 到最新的 MariaDB 。在安装前先完成以下步骤。

先决条件:

1. 停止当前 MysqL 服务

root@server1 [/var/]# MysqL
Welcome to the MysqL monitor. Commands end with ; or /g.
Your MysqL connection id is 5859
Server version: 5.5.47-cll MysqL Community Server (GPL)

Copyright (c) 2000,2015,Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

root@server1 [~]# systemctl stop MysqL
root@server1 [~]# systemctl status MysqL
● MysqL.service - LSB: start and stop MysqL
Loaded: loaded (/etc/rc.d/init.d/MysqL)
Active: Failed (Result: exit-code) since Sun 2016-01-31 10:00:02 UTC; 1min 31s ago
Docs: man:systemd-sysv-generator(8)
Main PID: 23430 (code=exited,status=203/EXEC)

Jan 31 10:00:02 server1.centos7-test.com systemd[1]: Started MysqL Server.
Jan 31 10:00:02 server1.centos7-test.com systemd[1]: Starting MysqL Server...
Jan 31 10:00:02 server1.centos7-test.com systemd[1]: MysqL.service: main process exited,code=exited,status=203/EXEC
Jan 31 10:00:02 server1.centos7-test.com systemd[1]: Unit MysqL.service entered Failed state.
Jan 31 10:00:02 server1.centos7-test.com systemd[1]: MysqL.service Failed.

2. 在升级之前将所有配置文件和数据库转移

转移数据库的存储路径和 MysqL 的配置文件

root@server1 [~]# cp -Rf /var/lib/MysqL /var/lib/MysqL-old

root@server1 [/var/lib/MysqL]# cat /etc/my.cnf
[MysqLd]
default-storage-engine=MyISAM
innodb_file_per_table=1
max_allowed_packet=268435456
open_files_limit=10000

root@server1 [~]#mv /etc/my.cnf /etc/my.cnf-old

3. 从服务器上删除和卸载 MysqL 所有的 RPM 包

运行以下命令来禁用 MysqL RPM 的目标（target）。通过运行此命令，cPanel 将不再处理 MysqL 的更新，并在系统上将这些 RPM 版本标记为已卸载。

/scripts/update_local_rpm_versions --edit target_settings.MysqL50 uninstalled
/scripts/update_local_rpm_versions --edit target_settings.MysqL51 uninstalled
/scripts/update_local_rpm_versions --edit target_settings.MysqL55 uninstalled
/scripts/update_local_rpm_versions --edit target_settings.MysqL56 uninstalled

现在运行以下命令：

/scripts/checkcpanelrpms --fix --targets=MysqL50,MysqL51,MysqL55,MysqL56

移除服务器上所有已有的 MysqL RPM 来为 MariaDB 的安装清理环境。请看下面的输出：

root@server1 [/var/lib/MysqL]# /scripts/check_cpanel_rpms --fix --targets=MysqL50,MysqL56
[2016-01-31 09:53:59 +0000]
[2016-01-31 09:53:59 +0000] Problems were detected with cPanel-provided files which are RPM controlled.
[2016-01-31 09:53:59 +0000] If you did not make these changes intentionally,you can correct them by running:
[2016-01-31 09:53:59 +0000]
[2016-01-31 09:53:59 +0000] > /usr/local/cpanel/scripts/check_cpanel_rpms --fix
[2016-01-31 09:53:59 +0000]
[2016-01-31 09:53:59 +0000] The following RPMs are unneeded on your system and should be uninstalled:
[2016-01-31 09:53:59 +0000] MysqL55-client-5.5.47-1.cp1148
[2016-01-31 09:53:59 +0000] MysqL55-devel-5.5.47-1.cp1148
[2016-01-31 09:53:59 +0000] MysqL55-server-5.5.47-1.cp1148
[2016-01-31 09:53:59 +0000] MysqL55-shared-5.5.47-1.cp1148
[2016-01-31 09:53:59 +0000] MysqL55-test-5.5.47-1.cp1148
[2016-01-31 09:53:59 +0000] compat-MysqL50-shared-5.0.96-4.cp1136
[2016-01-31 09:53:59 +0000] compat-MysqL51-shared-5.1.73-1.cp1150
[2016-01-31 09:53:59 +0000] Removing 0 broken rpms:
[2016-01-31 09:53:59 +0000] rpm: no packages given for erase
[2016-01-31 09:53:59 +0000] No new RPMS needed for install
[2016-01-31 09:53:59 +0000] Disabling service monitoring.
[2016-01-31 09:54:01 +0000] Uninstalling unneeded rpms: MysqL55-test MysqL55-server MysqL55-client compat-MysqL51-shared compat-MysqL50-shared MysqL55-shared MysqL55-devel
[2016-01-31 09:54:04 +0000] Removed symlink /etc/systemd/system/multi-user.target.wants/MysqL.service.
[2016-01-31 09:54:04 +0000] Restoring service monitoring.

通过这些步骤，我们已经卸载了现有的 MysqL RPM，并做了标记来防止 MysqL的更新，服务器的环境已经清理，然后准备安装 MariaDB。

开始安装吧，我们需要根据 CentOS 和 MariaDB 的版本为 MariaDB 创建一个 yum 软件库。下面是我的做法！

安装步骤：

第1步：创建 YUM 软件库。

root@server1 [~]# vim /etc/yum.repos.d/MariaDB.repo
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.0/centos7-amd64/
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
root@server1 [/etc/yum.repos.d]# cat /etc/yum.repos.d/MariaDB.repo
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.0/centos7-amd64/
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

第2步：打开 /etc/yum.conf 并修改如下行：

删除这一行：

exclude=courier* dovecot* exim* filesystem httpd* mod_ssl* mydns* MysqL* nsd* PHP* proftpd* pure-ftpd* spamassassin* squirrelmail*

替换为：

exclude=courier* dovecot* exim* filesystem httpd* mod_ssl* mydns* nsd* proftpd* pure-ftpd* spamassassin* squirrelmail*

重要

需要确保我们已经从 exclude 列表中移除了 MysqL 和 PHP。

第3步：运行以下命令来安装 MariaDB 和相关的包。

root@server1 [~]#yum install MariaDB-server MariaDB-client MariaDB-devel PHP-MysqL

Dependencies Resolved

===============================================================================================================================================
Package Arch Version Repository Size
===============================================================================================================================================
Installing:
MariaDB-client x86_64 10.0.23-1.el7.centos mariadb 10 M
MariaDB-devel x86_64 10.0.23-1.el7.centos mariadb 6.3 M
MariaDB-server x86_64 10.0.23-1.el7.centos mariadb 55 M
PHP-MysqL x86_64 5.4.16-36.el7_1 base 99 k
Installing for dependencies:
MariaDB-common x86_64 10.0.23-1.el7.centos mariadb 43 k
MariaDB-shared x86_64 10.0.23-1.el7.centos mariadb 1.2 M
libzip x86_64 0.10.1-8.el7 base 48 k
PHP-common x86_64 5.4.16-36.el7_1 base 563 k
PHP-pdo x86_64 5.4.16-36.el7_1 base 97 k

Transaction Summary
===============================================================================================================================================
Install 4 Packages (+5 Dependent package)

第4步：重新启动，并确保 MysqL 服务已启动。

root@server1 [~]# systemctl start MysqL
root@server1 [~]#
root@server1 [~]#
root@server1 [~]# systemctl status MysqL
● MysqL.service - LSB: start and stop MysqL
Loaded: loaded (/etc/rc.d/init.d/MysqL)
Active: active (exited) since Sun 2016-01-31 10:01:46 UTC; 3s ago
Docs: man:systemd-sysv-generator(8)
Process: 23717 ExecStart=/etc/rc.d/init.d/MysqL start (code=exited,status=0/SUCCESS)
Main PID: 23430 (code=exited,status=203/EXEC)

Jan 31 10:01:46 server1.centos7-test.com systemd[1]: Starting LSB: start and stop MysqL...
Jan 31 10:01:46 server1.centos7-test.com MysqL[23717]: Starting MysqL SUCCESS!
Jan 31 10:01:46 server1.centos7-test.com systemd[1]: Started LSB: start and stop MysqL.

第5步：运行 MysqL_upgrade 命令。

它将检查所有数据库中的所有表与当前安装的版本是否兼容，并在必要时会更新系统表，以赋予当前版本新增加的权限或能力。

root@server1 [~]# MysqL_upgrade
MysqL upgrade detected
Phase 1/6: Checking and upgrading MysqL database
Processing databases
MysqL
MysqL.columns_priv OK
MysqL.db OK
MysqL.event OK
MysqL.func OK
MysqL.help_category OK
MysqL.help_keyword OK
MysqL.help_relation OK
MysqL.help_topic OK
MysqL.host OK
MysqL.ndb_binlog_index OK
MysqL.plugin OK
MysqL.proc OK
MysqL.procs_priv OK
MysqL.proxies_priv OK
MysqL.servers OK
MysqL.tables_priv OK
MysqL.time_zone OK
MysqL.time_zone_leap_second OK
MysqL.time_zone_name OK
MysqL.time_zone_transition OK
MysqL.time_zone_transition_type OK
MysqL.user OK
Phase 2/6: Fixing views from MysqL
Phase 3/6: Running 'MysqL_fix_privilege_tables'
Phase 4/6: Fixing table and database names
Phase 5/6: Checking and upgrading tables
Processing databases
cphulkd
cphulkd.auths OK
cphulkd.blacklist OK
cphulkd.brutes OK
cphulkd.good_logins OK
cphulkd.ip_lists OK
cphulkd.known_netblocks OK
cphulkd.login_track OK
cphulkd.logins OK
cphulkd.report OK
cphulkd.whitelist OK
eximstats
eximstats.defers OK
eximstats.failures OK
eximstats.sends OK
eximstats.smtp OK
information_schema
leechprotect
leechprotect.hits OK
modsec
modsec.hits OK
performance_schema
roundcube
roundcube.cache OK
roundcube.cache_index OK
roundcube.cache_messages OK
roundcube.cache_shared OK
roundcube.cache_thread OK
roundcube.contactgroupmembers OK
roundcube.contactgroups OK
roundcube.contacts OK
roundcube.cp_schema_version OK
roundcube.dictionary OK
roundcube.identities OK
roundcube.searches OK
roundcube.session OK
roundcube.system OK
roundcube.users OK
saheetha_test
saheetha_test.authors OK
whmxfer
whmxfer.sessions OK
Phase 6/6: Running 'FLUSH PRIVILEGES'
OK

第6步：再次重新启动 MysqL 的服务，以确保一切都运行完好。

root@server1 [~]# systemctl restart MysqL
root@server1 [~]#
root@server1 [~]# systemctl status MysqL
● MysqL.service - LSB: start and stop MysqL
Loaded: loaded (/etc/rc.d/init.d/MysqL)
Active: active (running) since Sun 2016-01-31 10:04:11 UTC; 9s ago
Docs: man:systemd-sysv-generator(8)
Process: 23831 ExecStop=/etc/rc.d/init.d/MysqL stop (code=exited,status=0/SUCCESS)
Process: 23854 ExecStart=/etc/rc.d/init.d/MysqL start (code=exited,status=203/EXEC)
CGroup: /system.slice/MysqL.service
├─23861 /bin/sh /usr/bin/MysqLd_safe --datadir=/var/lib/MysqL --pid-file=/var/lib/MysqL/server1.centos7-test.com.pid
└─23933 /usr/sbin/MysqLd --basedir=/usr --datadir=/var/lib/MysqL --plugin-dir=/usr/lib64/MysqL/plugin --user=MysqL --log-error=/v...

Jan 31 10:04:10 server1.centos7-test.com systemd[1]: Starting LSB: start and stop MysqL...
Jan 31 10:04:11 server1.centos7-test.com MysqL[23854]: Starting MysqL. SUCCESS!
Jan 31 10:04:11 server1.centos7-test.com systemd[1]: Started LSB: start and stop MysqL.

第7步：运行 EasyApache，重建 Apache/PHP 以支持 MariaDB，并确保所有 PHP 的模块保持不变。

root@server1 [~]#/scripts/easyapache --build

重要

如果你在安装 MariaDB 之后忘记重建 Apache/PHP，将会报如下库错误：

root@server1 [/etc/my.cnf.d]# PHP -v
PHP: error while loading shared libraries: libMysqLclient.so.18: cannot open shared object file: No such file or directory

第8步：现在验证安装的程序和数据库。

root@server1 [/var/lib/MysqL]# MysqL
Welcome to the MariaDB monitor. Commands end with ; or /g.
Your MariaDB connection id is 15
Server version: 10.0.23-MariaDB MariaDB Server

Copyright (c) 2000,Oracle,MariaDB Corporation Ab and others.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

MariaDB [(none)]> show storage engines;
+--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
| CSV | YES | CSV storage engine | NO | NO | NO |
| MRG_MyISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
| MEMORY | YES | Hash based,stored in memory,useful for temporary tables | NO | NO | NO |
| BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
| MyISAM | YES | MyISAM storage engine | NO | NO | NO |
| InnoDB | DEFAULT | Percona-XtraDB,Supports transactions,row-level locking,and foreign keys | YES | YES | YES |
| ARCHIVE | YES | Archive storage engine | NO | NO | NO |
| FEDERATED | YES | FederatedX pluggable storage engine | YES | NO | YES |
| PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
| Aria | YES | Crash-safe tables with MyISAM heritage | NO | NO | NO |
+--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
10 rows in set (0.00 sec)

就这样：）。现在，我们该去欣赏 MariaDB 完善和高效的特点了。希望你喜欢阅读本文。希望留下您宝贵的建议和反馈！