MySQL Installation Password – Where is It?
In this mysql server tutorial we’ll walk you through what you need to do after mysql installation to find the password of your mysql database. The locations where you need to search for the password of your mysql server are as follows:
1) CentOS or RedHat: /var/log/mysqld.log or any other file specified in the log-error variable after your mysql installation has been completed.
2) Debian or Ubuntu: you will get a prompt asking for the password of the root user during mysql installation. If you won’t provide a password for your MySQL server, the root user will be created without a password which poses a security risk.
3) If you use the –initialize option, your MySQL server (or Percona Server or MariaDB – depending on which one you choose) will create a MySQL database with a random password and provide it in the error.log file after mysql server installation.
4) If you use the –initialize-insecure option, the root user of your mysql installation won’t have any password.
To avoid a possible data breach which can come in many forms (a sql injection attack or via other attack vectors), always ensure to not provide user input into a SQL query, sanitize your SQL queries, and follow database security best practices and application security best practices.
Below you can find a couple of sql interview questions and answers – make sure to glance through them before attending your next sql interview!
Q: How to protect against SQL injection?
A: Don’t pass user input into a SQL query. You really don’t need to pass a mysql advanced tutorial to know this – it’s that simple!
Q: What is the file to adjust mysql server configuration?
A: The mysql my.cnf file on Linux or the mysql my.ini file on Windows is what you should look into. If needed, we’ll make a separate mysql tutorial for beginners on how it works. A mysql tutorial covering which storage engine – myisam vs innodb – to choose is available here: https://youtube.com/shorts/MpVWcYsJqn4
Q: Is there a sql full course or any mysql tutorial that would cover mysql storage engines in more detail in all complex aspects?
A: Not that we know of, but if needed, we’ll make a sql course talking about everything: sql basics, sql queries, sql vs nosql, sql for data analysis, etc.
Q: Is there a big data tutorial for those looking to work with big data on mysql server?
A: Yes, it’s available here: https://youtube.com/shorts/GurccdgcjL0
Q: MyISAM vs InnoDB performance – which one is better and why?
A: InnoDB – all of the features that were available in MyISAM are now available in InnoDB.
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