Useful tips

How do I initialize a mysql database?

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How do I initialize a mysql database?

Connect to the server:

  1. If you used –initialize but not –initialize-insecure to initialize the data directory, connect to the server as root : mysql -u root -p.
  2. If you used –initialize-insecure to initialize the data directory, connect to the server as root without a password: mysql -u root –skip-password.

How do I find mysql data directory?

Resolution

  1. Open up MySQL’s configuration file: less /etc/my.cnf.
  2. Search for the term “datadir”: /datadir.
  3. If it exists, it will highlight a line that reads: datadir = [path]
  4. You can also manually look for that line.
  5. If that line does not exist, then MySQL will default to: /var/lib/mysql.

How do I backup my mysql database?

Step 1: Create a MySQL Database Backup

  1. Open phpMyAdmin. On the directory tree on the left, click the database you want to back up.
  2. Click Export on the menu across the top of the display. You’ll see a section called “Export Method.” Use Quick to save a copy of the whole database.
  3. Click Go.

Where is var lib mysql files?

By default, the datadir is set to /var/lib/mysql in the /etc/mysql/mysql.

What does MySQL initialize do?

To initialize a MySQL installation, invoke mysqld with the –initialize or –initialize-insecure option. It initializes the MySQL data directory and creates the system tables that it contains. It initializes the system tablespace and related data structures needed to manage InnoDB tables.

Can I copy MySQL data directory?

If you are copying the entire database installation, so, all of the databases and the contents of every database, you can just shut down mysqld, zip up your entire MySQL data directory, and copy it to the new server’s data directory.

Is Mysqldump a hot backup?

mysqldump is also an option – note that mysqldump is not a hot backup tool by default (especially if your tables are using multiple storage engines or the tables are being locked during the backup), but if your tables are only using the InnoDB storage engine and you use the –single-transaction option when using …

Can I remove var lib MySQL?

2 Answers. Alternativly you can cd into /var/lib/mysql and delete folders and files. MySQL / MYIASM uses one directory per database and a few files per table (you can see the table name in the filename). You can delete them.

What is var lib MySQL?

1. MySQL Changing Database Location. When using Fedora 12, the default location for MySQL to store its database is /var/lib/mysql . This is where SELinux expects it to be by default, and hence this area is already labeled appropriately for you, using the mysqld_db_t type.

What is Mysqld activity monitor?

mysqld, also known as MySQL Server, is a single multithreaded program that does most of the work in a MySQL installation. It does not spawn additional processes. MySQL Server manages access to the MySQL data directory that contains databases and tables.

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