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

1. root@server1 [/var/]# mysql
2. Welcome to the MySQL monitor. Commands end with ; or \g.
3. Your MySQL connection id is 5859
4. Server version: 5.5.47-cll MySQL Community Server (GPL)
6. Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
8. Oracle is a registered trademark of Oracle Corporation and/or its
9. affiliates. Other names may be trademarks of their respective
10. owners.
12. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
14. root@server1 [~]# systemctl stop mysql
15. root@server1 [~]# systemctl status mysql
16. ● mysql.service - LSB: start and stop MySQL
17. Loaded: loaded (/etc/rc.d/init.d/mysql)
18. Active: failed (Result: exit-code) since Sun 2016-01-31 10:00:02 UTC; 1min 31s ago
19. Docs: man:systemd-sysv-generator(8)
20. Main PID: 23430 (code=exited, status=203/EXEC)
22. Jan 31 10:00:02 server1.centos7-test.com systemd[1]: Started MySQL Server.
23. Jan 31 10:00:02 server1.centos7-test.com systemd[1]: Starting MySQL Server...
24. Jan 31 10:00:02 server1.centos7-test.com systemd[1]: mysql.service: main process exited, code=exited, status=203/EXEC
25. Jan 31 10:00:02 server1.centos7-test.com systemd[1]: Unit mysql.service entered failed state.
26. 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

1. root@server1 [~]# cp -Rf /var/lib/mysql /var/lib/mysql-old
3. root@server1 [/var/lib/mysql]# cat /etc/my.cnf
4. [mysqld]
5. default-storage-engine=MyISAM
6. innodb_file_per_table=1
7. max_allowed_packet=268435456
8. open_files_limit=10000
10. 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。

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
4. /scripts/update_local_rpm_versions --edit target_settings.MySQL56 uninstalled

现在运行以下命令：

1. /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：

1. root@server1 [/var/lib/mysql]# /scripts/check_cpanel_rpms --fix --targets=MySQL50,MySQL51,MySQL55,MySQL56
2. [2016-01-31 09:53:59 +0000]
3. [2016-01-31 09:53:59 +0000] Problems were detected with cPanel-provided files which are RPM controlled.
4. [2016-01-31 09:53:59 +0000] If you did not make these changes intentionally, you can correct them by running:
5. [2016-01-31 09:53:59 +0000]
6. [2016-01-31 09:53:59 +0000] > /usr/local/cpanel/scripts/check_cpanel_rpms --fix
7. [2016-01-31 09:53:59 +0000]
8. [2016-01-31 09:53:59 +0000] The following RPMs are unneeded on your system and should be uninstalled:
9. [2016-01-31 09:53:59 +0000] MySQL55-client-5.5.47-1.cp1148
10. [2016-01-31 09:53:59 +0000] MySQL55-devel-5.5.47-1.cp1148
11. [2016-01-31 09:53:59 +0000] MySQL55-server-5.5.47-1.cp1148
12. [2016-01-31 09:53:59 +0000] MySQL55-shared-5.5.47-1.cp1148
13. [2016-01-31 09:53:59 +0000] MySQL55-test-5.5.47-1.cp1148
14. [2016-01-31 09:53:59 +0000] compat-MySQL50-shared-5.0.96-4.cp1136
15. [2016-01-31 09:53:59 +0000] compat-MySQL51-shared-5.1.73-1.cp1150
16. [2016-01-31 09:53:59 +0000] Removing 0 broken rpms:
17. [2016-01-31 09:53:59 +0000] rpm: no packages given for erase
18. [2016-01-31 09:53:59 +0000] No new RPMS needed for install
19. [2016-01-31 09:53:59 +0000] Disabling service monitoring.
20. [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
21. [2016-01-31 09:54:04 +0000] Removed symlink /etc/systemd/system/multi-user.target.wants/mysql.service.
22. [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。

1. root@server1 [~]# vim /etc/yum.repos.d/MariaDB.repo
2. [mariadb]
3. name = MariaDB
4. baseurl = http://yum.mariadb.org/10.0/centos7-amd64/
5. gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
6. gpgcheck=1
7. root@server1 [/etc/yum.repos.d]# cat /etc/yum.repos.d/MariaDB.repo
8. [mariadb]
9. name = MariaDB
10. baseurl = http://yum.mariadb.org/10.0/centos7-amd64/
11. gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
12. gpgcheck=1

第2步：打开 /etc/yum.conf 并修改如下行：

删除这一行：

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

替换为：

1. 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。

1. root@server1 [~]#yum install MariaDB-server MariaDB-client MariaDB-devel php-mysql
3. Dependencies Resolved
5. ===============================================================================================================================================
6. Package Arch Version Repository Size
7. ===============================================================================================================================================
8. Installing:
9. MariaDB-client x86_64 10.0.23-1.el7.centos mariadb 10 M
10. MariaDB-devel x86_64 10.0.23-1.el7.centos mariadb 6.3 M
11. MariaDB-server x86_64 10.0.23-1.el7.centos mariadb 55 M
12. php-mysql x86_64 5.4.16-36.el7_1 base 99 k
13. Installing for dependencies:
14. MariaDB-common x86_64 10.0.23-1.el7.centos mariadb 43 k
15. MariaDB-shared x86_64 10.0.23-1.el7.centos mariadb 1.2 M
16. libzip x86_64 0.10.1-8.el7 base 48 k
17. php-common x86_64 5.4.16-36.el7_1 base 563 k
18. php-pdo x86_64 5.4.16-36.el7_1 base 97 k
20. Transaction Summary
21. ===============================================================================================================================================
22. Install 4 Packages (+5 Dependent package)

第4步：重新启动，并确保 MySQL 服务已启动。

1. root@server1 [~]# systemctl start mysql
2. root@server1 [~]#
3. root@server1 [~]#
4. root@server1 [~]# systemctl status mysql
5. ● mysql.service - LSB: start and stop MySQL
6. Loaded: loaded (/etc/rc.d/init.d/mysql)
7. Active: active (exited) since Sun 2016-01-31 10:01:46 UTC; 3s ago
8. Docs: man:systemd-sysv-generator(8)
9. Process: 23717 ExecStart=/etc/rc.d/init.d/mysql start (code=exited, status=0/SUCCESS)
10. Main PID: 23430 (code=exited, status=203/EXEC)
12. Jan 31 10:01:46 server1.centos7-test.com systemd[1]: Starting LSB: start and stop MySQL...
13. Jan 31 10:01:46 server1.centos7-test.com mysql[23717]: Starting MySQL SUCCESS!
14. 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。

1. root@server1 [~]# mysql_upgrade
2. MySQL upgrade detected
3. Phase 1/6: Checking and upgrading mysql database
4. Processing databases
5. mysql
6. mysql.columns_priv OK
7. mysql.db OK
8. mysql.event OK
9. mysql.func OK
10. mysql.help_category OK
11. mysql.help_keyword OK
12. mysql.help_relation OK
13. mysql.help_topic OK
14. mysql.host OK
15. mysql.ndb_binlog_index OK
16. mysql.plugin OK
17. mysql.proc OK
18. mysql.procs_priv OK
19. mysql.proxies_priv OK
20. mysql.servers OK
21. mysql.tables_priv OK
22. mysql.time_zone OK
23. mysql.time_zone_leap_second OK
24. mysql.time_zone_name OK
25. mysql.time_zone_transition OK
26. mysql.time_zone_transition_type OK
27. mysql.user OK
28. Phase 2/6: Fixing views from mysql
29. Phase 3/6: Running 'mysql_fix_privilege_tables'
30. Phase 4/6: Fixing table and database names
31. Phase 5/6: Checking and upgrading tables
32. Processing databases
33. cphulkd
34. cphulkd.auths OK
35. cphulkd.blacklist OK
36. cphulkd.brutes OK
37. cphulkd.good_logins OK
38. cphulkd.ip_lists OK
39. cphulkd.known_netblocks OK
40. cphulkd.login_track OK
41. cphulkd.logins OK
42. cphulkd.report OK
43. cphulkd.whitelist OK
44. eximstats
45. eximstats.defers OK
46. eximstats.failures OK
47. eximstats.sends OK
48. eximstats.smtp OK
49. information_schema
50. leechprotect
51. leechprotect.hits OK
52. modsec
53. modsec.hits OK
54. performance_schema
55. roundcube
56. roundcube.cache OK
57. roundcube.cache_index OK
58. roundcube.cache_messages OK
59. roundcube.cache_shared OK
60. roundcube.cache_thread OK
61. roundcube.contactgroupmembers OK
62. roundcube.contactgroups OK
63. roundcube.contacts OK
64. roundcube.cp_schema_version OK
65. roundcube.dictionary OK
66. roundcube.identities OK
67. roundcube.searches OK
68. roundcube.session OK
69. roundcube.system OK
70. roundcube.users OK
71. saheetha_test
72. saheetha_test.authors OK
73. whmxfer
74. whmxfer.sessions OK
75. Phase 6/6: Running 'FLUSH PRIVILEGES'
76. OK

第6步：再次重新启动 MySQL 的服务，以确保一切都运行完好。

1. root@server1 [~]# systemctl restart mysql
2. root@server1 [~]#
3. root@server1 [~]# systemctl status mysql
4. ● mysql.service - LSB: start and stop MySQL
5. Loaded: loaded (/etc/rc.d/init.d/mysql)
6. Active: active (running) since Sun 2016-01-31 10:04:11 UTC; 9s ago
7. Docs: man:systemd-sysv-generator(8)
8. Process: 23831 ExecStop=/etc/rc.d/init.d/mysql stop (code=exited, status=0/SUCCESS)
9. Process: 23854 ExecStart=/etc/rc.d/init.d/mysql start (code=exited, status=0/SUCCESS)
10. Main PID: 23430 (code=exited, status=203/EXEC)
11. CGroup: /system.slice/mysql.service
12. ├─23861 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/server1.centos7-test.com.pid
13. └─23933 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/v...
15. Jan 31 10:04:10 server1.centos7-test.com systemd[1]: Starting LSB: start and stop MySQL...
16. Jan 31 10:04:11 server1.centos7-test.com mysql[23854]: Starting MySQL. SUCCESS!
17. 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。

1. 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：

1. root@server1 [/etc/my.cnf.d]# php -v
2. 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。

1. root@server1 [/var/lib/mysql]# mysql
2. Welcome to the MariaDB monitor. Commands end with ; or \g.
3. Your MariaDB connection id is 15
4. Server version: 10.0.23-MariaDB MariaDB Server
6. Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.
8. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
10. MariaDB [(none)]> show storage engines;
11. +--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
12. | Engine | Support | Comment | Transactions | XA | Savepoints |
13. +--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
14. | CSV | YES | CSV storage engine | NO | NO | NO |
15. | MRG_MyISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
16. | MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
17. | BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
18. | MyISAM | YES | MyISAM storage engine | NO | NO | NO |
19. | InnoDB | DEFAULT | Percona-XtraDB, Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
20. | ARCHIVE | YES | Archive storage engine | NO | NO | NO |
21. | FEDERATED | YES | FederatedX pluggable storage engine | YES | NO | YES |
22. | PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
23. | Aria | YES | Crash-safe tables with MyISAM heritage | NO | NO | NO |
24. +--------------------+---------+----------------------------------------------------------------------------+--------------+------+------------+
25. 10 rows in set (0.00 sec)

原文发布时间为：2016-06-14

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