Fjern MySQL
Hvis du udskifter MySQL med MariaDB, skal du først tage backup af dine data, og fjerne MySQL.
Undlad at medtage databaser som ‘mysql’, ‘phpmyadmin’,’performance_schema’ og ‘information_schema’, dvs. alle de databaser der automatisk oprettes under den nye installation:
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$ mysqldump -u bruger -pkode -h hostnavn --lock-all-tables --triggers --routines --events --databases db1 db2 db3 > mysqldump_data.sql |
Da din nye MariaDB sikkert ikke er kompatibel med privilegier fra den gamle, dumper vi også en fil med alle GRANT’s der skal udføres at oprette databasebrugerne påny:
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$ mysql -u bruger -pkode -BNe "select concat('\'',user,'\'@\'',host,'\'') from mysql.user where user != 'root'" | \ while read uh; do mysql -u bruger -pkode -BNe "show grants for $uh" | sed 's/$/;/; s/\\\\/\\/g'; done > mysqldump_grants.sql |
Nu kan du fjerne MySQL:
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$ sudo apt-get --purge remove "mysql*" |
Installer MariaDB
Gå til Setting up MariaDB repositories og vælg f.eks. Ubuntu -> 16.04 LTS 'xenial' -> 10.2 [Stable]. Herefter får du en komplet guide, der kunne se således ud:
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# apt-get install software-properties-common # apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8 # add-apt-repository 'deb [arch=amd64,i386,ppc64el] http://mirrors.dotsrc.org/mariadb/repo/10.2/ubuntu xenial main' |
… og så kan du installere MariaDB
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# apt update # apt install mariadb-server |
Under installationen vil du blive bedt om at angive en adgangskode til root brugeren.
Herefter afvikler du mysql_secure_installation:
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# mysql_secure_installation NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MariaDB to secure it, we'll need the current password for the root user. If you've just installed MariaDB, and you haven't set the root password yet, the password will be blank, so you should just press enter here. Enter current password for root (enter for none): OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MariaDB root user without the proper authorisation. You already have a root password set, so you can safely answer 'n'. Change the root password? [Y/n] n ... skipping. By default, a MariaDB installation has an anonymous user, allowing anyone to log into MariaDB without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? [Y/n] y ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] Y ... Success! By default, MariaDB comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] Y - Dropping test database... ... Success! - Removing privileges on test database... ... Success! Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] Y ... Success! Cleaning up... All done! If you've completed all of the above steps, your MariaDB installation should now be secure. Thanks for using MariaDB! |