to see where the error is. Generally more obvious. Can Google.5. When the command enters MySQL, it enters the mariadb. But without MySQL database, launch database, execute mysqladmin-u root-p password Mima, next let input password, direct enter (default password is empty). Then log in Mysql-u root-p, enter the password you set Mima;6. Then show databases; there is a MySQL database. Execute the following command: Update user set Password=password (' M
1. See if the system is installedRpm-qa mariadb*2. Create the system user MySQL and specify its home directory as/app/mysqldb①getent passwd mysql②useradd-d/app/mysqldb-r-m-s/sbin/nologin mysql #-r create system user-M Create home directory-D Specify home directory3. Unzip the installation package to/usr/local①tar xvf mariadb-10.2.8-linux-x86_64.tar.gz-c/usr/local/##-c hi Specifies the destination directory
documentation)
Here, I will list the configurations of the test machine:
Operating system version: CentOS7
Node4: 10.128.20.16 node5: 10.128.20.17 node6: 10.128.20.18
In the first behavior example, node4 is the hostname and 10.128.20.16 is the ip address. Modify the/etc/hosts file on the three machines. My file is as follows:10.128.20.16 node410.128.20.17 node510.128.20.18 node6
To ensure mutual communication between nodes, You need to disable firewa
required, please refer to the official documentation for special configuration)Here, I list the configuration of the test machine:Operating system version: Centos7node4:10.128.20.16 node5:10.128.20.17 node6:10.128.20.18With the first act example, node4 for hostname , 10.128.20.16 for ip , in three machines to modify the /etc/hosts file, my file is as follows:10.128.20.16 node410.128.20.17 node510.128.20.18 node6To ensure that the nodes communicate wi
two units are required, please refer to the official documentation for special configuration) Here, I list the configuration of the test machine: Operating system version: Centos7 node4:10.128.20.16 node5:10.128.20.17 node6:10.128.20.18 With the first act example, node4 for hostname , 10.128.20.16 for ip , in three machines to modify the /etc/hosts file, my file is as follows: 10.128.20.16 node4
10.128.20.17 node5
10.128.20.18 node6
To ensure that t
)
Here, I will list the configurations of the test machine:
Operating system version: centos7
Node4: 10.128.20.16 node5: 10.128.20.17 node6: 10.128.20.18
In the first behavior example, node4 ishostname, 10.128.20.16 isip, Modify on three machines/etc/hostsFile. My file is as follows:
10.128.20.16 node410.128.20.17 node510.128.20.18 node6
To ensure mutual communication between nodes, You need to disable firewall settings (if you need a firewall, refer
; Package mariadb-embedded.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-embedded-devel.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-libs.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-server.x86_64 1:5.5.37-1.el7_0 will be installed--> Processing Dependency: perl-DBD-MyS
required, please refer to the official documentation for special configuration)Here, I list the configuration of the test machine:Operating system version: Centos7node4:10.128.20.16 node5:10.128.20.17 node6:10.128.20.18With the first act example, node4 for hostname , 10.128.20.16 for ip , in three machines to modify the /etc/hosts file, my file is as follows:10.128.20.16 node410.128.20.17 node510.128.20.18 node6To ensure that the nodes communicate wi
Original link: https://mariadb.com/kb/en/mariadb-vs-mysql-features/Xiaomo translation------Support for more storage enginesIn addition to the standard MyISAM, blackhole, CSV, memory, and ARCHIVE, the following storage engines are also included in the MARIADB source and the binary package:
Aria
XtraDB (can be used to replace InnoDB)
PBXT (included in MariaDB
| Utf8_unicode_ci || Collation_database | Utf8_unicode_ci || Collation_server | Utf8_unicode_ci |+----------------------+-----------------+3 Rows in Set (0.00 sec) The character set configuration is complete. 3. Add users, set permissions Create user command mysql>create user [email protected] identified by ' password '; Direct creation of user and authorized commands Mysql>grant all on * * to [e-mail protected] indentified by ' password '; Grant access to the extranet Mysql>grant all privileg
/mysql/charsets/|+ -------------------------- + ---------------------------- +8 rows in set (0.00 sec)
+ ---------------------- + ----------------- +| Variable_name | Value |+ ---------------------- + ----------------- +| Collation_connection | utf8_unicode_ci || Collation_database | utf8_unicode_ci || Collation_server | utf8_unicode_ci |+ ---------------------- + ----------------- +3 rows in set (0.00 sec)
Character Set Configuration is complete.
3. Add users and Set permissions
Create USER co
Tags: mysql mariadb PXC galeraFirst, Background introductionEither Binlog or Gtid, the essence of which is in the form of I/o_thread and Sql_thread synchronization, because the replication delay can not avoid the criticism, based on the MARIADB introduced Galera cluster to solve the problem.Second, Galera cluster introductionGalera cluster and traditional replication methods, not through I/o_thread and Sql_
Tutorial: How to check the MARIADB server version http://www.linuxidc.com/Linux/2015-08/122382.htmRealization of Read and write separation of MariaDB proxy http://www.linuxidc.com/Linux/2014-05/101306.htmLinux compiler installation Configuration mariadb database method http://www.linuxidc.com/Linux/2014-11/109049.htmT
, resulting in excessive fragments.
Query_cache_limit: Maximum query result that can be cached
Query_cache_size: total available memory space for querying the cache. The unit is byte and must be an integer multiple of 1024. The default value is 0, indicating that the cache is not enabled.
Query_cache_wlock_invalidate: If a table is locked by other connections, can it still return results from the query cache? The default value is OFF, indicating that the table can be accessed.
In other connected
Finally, I completed the login method when MariaDB and MySQL coexist. At that time, I knew that the installation was successful, that is, I could not log on to MariaDB. I would like to share my experiences with you.
Finally, I completed the login method when MariaDB and MySQL coexist. At that time, I knew that the installation was successful, that is, I could not
Tags: mariadb and mysql co-mariadb run concurrently with MySQL[[email protected] ~]#groupadd mariadb - g Wuyi3[email protected] ~]#useradd-u3 - g mariadb -s/sbin/nologin-d/home/mariadb mariadbDownload the binary installation package to the/root directory from
How to Upgrade MariaDB 5.5 to MariaDB 10.1 on Centos/rhel 7 and Debian Systems
Upgrade MariaDB 5.5 to MariaDB 10.1 on Rhel/centos 7
Reprinted from Https://www.tecmint.com/upgrade-mariadb-5-5-to-10-centos-rhel-debian-ubuntu/What ' s new
Few new features has b
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