20170312-7 选题

sources/tech/20170309 How to Change Root Password of MySQL or MariaDB in Linux.md

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+How to Change Root Password of MySQL or MariaDB in Linux
+============================================================
+
+
+If you’re [installing MySQL or MariaDB in Linux][1] for the first time, chances are you will be executing mysql_secure_installation script to secure your MySQL installation with basic settings.
+
+One of these settings is, database root password – which you must keep secret and use only when it is required. If you need to change it (for example, when a database administrator changes roles – or is laid off!).
+
+**Suggested Read:** [Recover MySQL or MariaDB Root Password in Linux][2]
+
+This article will come in handy. We will explain how to change a root password of MySQL or MariaDB database server in Linux.
+
+Although we will use a MariaDB server in this article, the instructions should work for MySQL as well.
+
+### Change MySQL or MariaDB Root Password
+
+You know the root password and want to reset it, in this case, let’s make sure MariaDB is running:
+
+```
+------------- CentOS/RHEL 7 and Fedora 22+ ------------- 
+# systemctl is-active mariadb
+------------- CentOS/RHEL 6 and Fedora -------------
+# /etc/init.d/mysqld status
+```
+[
+ ![Check MySQL Status](http://www.tecmint.com/wp-content/uploads/2017/03/Check-MySQL-Status.png) 
+][3]
+
+Check MySQL Status
+
+If the above command does not return the word `active` as output or its stopped, you will need to start the database service before proceeding:
+
+```
+------------- CentOS/RHEL 7 and Fedora 22+ ------------- 
+# systemctl start mariadb
+------------- CentOS/RHEL 6 and Fedora -------------
+# /etc/init.d/mysqld start
+```
+
+Next, we will login to the database server as root:
+
+```
+# mysql -u root -p
+```
+
+For compatibility across versions, we will use the following statement to update the user table in the mysql database. Note that you need to replace `YourPasswordHere` with the new password you have chosen for root.
+
+```
+MariaDB [(none)]> USE mysql;
+MariaDB [(none)]> UPDATE user SET password=PASSWORD('YourPasswordHere') WHERE User='root' AND Host = 'localhost';
+MariaDB [(none)]> FLUSH PRIVILEGES;
+```
+
+To validate, exit your current MariaDB session by typing.
+
+```
+MariaDB [(none)]> exit;
+```
+
+and then press Enter. You should now be able to connect to the server using the new password.
+
+[
+ ![Change MySQL/MariaDB Root Password](http://www.tecmint.com/wp-content/uploads/2017/03/Change-MySQL-Root-Password.png) 
+][4]
+
+Change MySQL/MariaDB Root Password
+
+##### Summary
+
+In this article we have explained how to change the MariaDB / MySQL root password – whether you know the current one or not.
+
+As always, feel free to drop us a note if you have any questions or feedback using our comment form below. We look forward to hearing from you!
+
+--------------------------------------------------------------------------------
+
+作者简介：
+
+Gabriel Cánepa is a GNU/Linux sysadmin and web developer from Villa Mercedes, San Luis, Argentina. He works for a worldwide leading consumer product company and takes great pleasure in using FOSS tools to increase productivity in all areas of his daily work.
+
+--------------------------------------------------------------------------------
+
+via: http://www.tecmint.com/change-mysql-mariadb-root-password/
+
+作者：[Gabriel Cánepa][a]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]:http://www.tecmint.com/author/gacanepa/
+
+[1]:http://www.tecmint.com/install-mariadb-in-centos-7/
+[2]:http://www.tecmint.com/reset-mysql-or-mariadb-root-password/
+[3]:http://www.tecmint.com/wp-content/uploads/2017/03/Check-MySQL-Status.png
+[4]:http://www.tecmint.com/wp-content/uploads/2017/03/Change-MySQL-Root-Password.png
+[5]:http://www.tecmint.com/author/gacanepa/
+[6]:http://www.tecmint.com/10-useful-free-linux-ebooks-for-newbies-and-administrators/
+[7]:http://www.tecmint.com/free-linux-shell-scripting-books/