How to perform a mysqldump without a password prompt?

mysqldump password prompt
mysqldump with encrypted password
mysqldump password with special characters
mysqldump --no-data
mysqldump ignore-table
mysqldump all-databases
pass password to mysqldump command
mysqldump: [warning] using a password on the command line interface can be insecure.

I would like to know the command to perform a mysqldump of a database without the prompt for the password.

REASON: I would like to run a cron job, which takes a mysqldump of the database once everyday. Therefore, I won't be able to insert the password when prompted.

How could I solve this ?

Since you are using Ubuntu, all you need to do is just to add a file in your home directory and it will disable the mysqldump password prompting. This is done by creating the file ~/.my.cnf (permissions need to be 600).

Add this to the .my.cnf file

[mysqldump]
user=mysqluser
password=secret

This lets you connect as a MySQL user who requires a password without having to actually enter the password. You don't even need the -p or --password.

Very handy for scripting mysql & mysqldump commands.

The steps to achieve this can be found in this link.

Alternatively, you could use the following command:

mysqldump -u [user name] -p[password] [database name] > [dump file]

but be aware that it is inherently insecure, as the entire command (including password) can be viewed by any other user on the system while the dump is running, with a simple ps ax command.

How to perform mysqldump without a password prompt, Is there any way to configure the password less option for backup user, so I can exclude the passwords from the script and configuration file. I am using mysql community versions, to backup databases I am using mysqldump. But the password is added in the script & configuration file. Is there any way to configure the password less option for backup user, so I can exclude the passwords from the script and configuration file.

Adding to @Frankline's answer:

The -p option must be excluded from the command in order to use the password in the config file.

Correct: mysqldump –u my_username my_db > my_db.sql

Wrong: mysqldump –u my_username -p my_db > my_db.sql


.my.cnf can omit the username.

[mysqldump]
password=my_password

If your .my.cnf file is not in a default location and mysqldump doesn't see it, specify it using --defaults-file.

mysqldump --defaults-file=/path-to-file/.my.cnf –u my_username my_db > my_db.sql

MySQLdump via crontab, Could I pass it to a file that is atleast MD5 or better hashed and protected to increase security but make the command require no user input? Any  How to perform mysqldump without a password prompt. 456. sreekanth pm. December 21, 2018 01:37AM Re: How to perform mysqldump without a password prompt. 262.

A few answers mention putting the password in a configuration file.

Alternatively, from your script you can export MYSQL_PWD=yourverysecretpassword.

The upside of this method over using a configuration file is that you do not need a separate configuration file to keep in sync with your script. You only have the script to maintain.

There is no downside to this method.

The password is not visible to other users on the system (it would be visible if it is on the command line). The environment variables are only visible to the user running the mysql command, and root.

The password will also be visible to anyone who can read the script itself, so make sure the script itself is protected. This is in no way different than protecting a configuration file. You can still source the password from a separate file if you want to have the script publicly readable (export MYSQL_PWD=$(cat /root/mysql_password) for example). It is still easier to export a variable than to build a configuration file.

E.g.,

$ export MYSQL_PWD=$(>&2 read -s -p "Input password (will not echo): "; echo "$REPLY")
$ mysqldump -u root mysql | head
-- MySQL dump 10.13  Distrib 5.6.23, for Linux (x86_64)
--
-- Host: localhost    Database: mysql
-- ------------------------------------------------------
-- Server version   5.6.23
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
$ mysqldump -u root mysql | head
-- MySQL dump 10.13  Distrib 5.6.23, for Linux (x86_64)
--
-- Host: localhost    Database: mysql
-- ------------------------------------------------------
-- Server version   5.6.23
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

How to Dump all databases from MySql server with mysqldump , You can then run the mysqldump command without a password: mysqldump --​user=databseuser12 --host=mysql.example.com forumsalpha  First command is used to login to MySQL server without prompting password and second command is used to take backup all your databases without password. You can also used MySQL commands in any shell scripts or schedule crontab for backup.

To use a file that is anywhere inside of OS, use --defaults-extra-file eg:

mysqldump --defaults-extra-file=/path/.sqlpwd [database] > [desiredoutput].sql

Note: .sqlpwd is just an example filename. You can use whatever you desire.

Note: MySQL will automatically check for ~/.my.cnf which can be used instead of --defaults-extra-file

If your using CRON like me, try this!

mysqldump --defaults-extra-file=/path/.sqlpwd [database] > "$(date '+%F').sql"

Required Permission and Recommended Ownership

sudo chmod 600 /path/.sqlpwd && sudo chown $USER:nogroup /path/.sqlpwd

.sqlpwd contents:

[mysqldump]
user=username
password=password

Other examples to pass in .cnf or .sqlpwd

[mysql]
user=username
password=password

[mysqldiff]
user=username
password=password

[client]
user=username
password=password

If you wanted to log into a database automatically, you would need the [mysql] entry for instance.

You could now make an alias that auto connects you to DB

alias whateveryouwant="mysql --defaults-extra-file=/path/.sqlpwd [database]"

You can also only put the password inside .sqlpwd and pass the username via the script/cli. I'm not sure if this would improve security or not, that would be a different question all-together.

For completeness sake I will state you can do the following, but is extremely insecure and should never be used in a production environment:

mysqldump -u [user_name] -p[password] [database] > [desiredoutput].sql

Note: There is NO SPACE between -p and the password.

Eg -pPassWord is correct while -p Password is incorrect.

How to perform a mysqldump without a password prompt , I would like to know the command to perform a mysqldump of a database without the prompt for the password. REASON: I would like to run a  I would like to know the command to perform a mysqldump of a database without the prompt for the password. REASON: I would like to run a cron job, which takes a mysqldump of the database once ever

Yeah it is very easy .... just in one magical command line no more

mysqldump --user='myusername' --password='mypassword' -h MyUrlOrIPAddress databasename > myfile.sql

and done :)

How To Use MySQL Commands without Password Prompt, Q. How do I use MySQL command without prompting password? How do I use mysqldump command without using the password in the script? It is usually much more helpful to redirect your mysqldump output to a file: mysqldump my_db > my_db.sql In a more complex example where you must know the username and password to dump the database this command will work: mysqldump --opt --user=root --password my_db > my_db.sql Note that MySQL will prompt you for the database password.

MySQLdump without password in cronjob, I show you how to do a MySQLdump without password in Cronjob in an The problem with MySQL dumps is, if you run the command without  The backup files created by the mysqldump utility are basically a set of SQL statements that can be used to recreate the original database. The mysqldump command can also generate files in CSV and XML format. You can also use the mysqldump utility to transfer your MySQL database to another MySQL server.

how to use mysqldump?, The following is just an example to use mysqldump. cd /home/qa/html mysqldump --host="hostname" --user="username" --password="password" databasename  Use the mysqldump utility to create a backup of you database. Open up a Windows command prompt. Click Start -> Run; Enter “cmd” into the dialog box and click the “OK” button. Change the directory to the following to access the mysqldump utility. cd C:\Program Files\MySQL\MySQL Server 5.5\bin

How to perform a mysqldump without a password prompt?, I would like to know the command to perform a mysqldump of a database without the prompt for the password. REASON: I would like to run a  This video is a tutorial, explaining how to change the password of a user (e.g: root) in MySql when its existing password is known, using Command Prompt in Windows.

Comments
  • downvoted the other answers passing -p on the command line, as any user can ps aux to see root or user's password. Using the file suggestion above is most secure
  • If a global setting is not an option (in case you have not only one mysql instance to connect to), you can set the config file via --defaults-file. Like ` mysqldump --defaults-file=my_other.cnf --print-defaults`
  • @kante: it is safe. It's only available to users to whom the .my.cnf file belongs to.
  • On Windows, the configuration file is not at ~/.my.cnf. See stackoverflow.com/a/14653239/470749. MySql expected mine to be at c:\wamp\bin\mysql\mysql5.5.24\my.cnf. So I created a file there. Restarting Mysql wasn't necessary; it worked immediately for my next mysqldump.
  • to add a level of security, you should use a dedicated, non database specific, readonly user, and in no case the root user. It can be done like this: GRANT LOCK TABLES, SELECT ON *.* TO 'BACKUPUSER'@'%' IDENTIFIED BY 'PASSWORD';
  • Damnit, a lot of XAMPP tutorials include the -p without explaining it. It doesn't NOT work for bypassing a blank password...
  • Although this answer is not really "incorrect", it is not yet secure, the environment variables exported are still easily visible when the program is running...
  • @MatheusOl: The environment variables are only visible to root and the user itself - the same users who would have access to a configuration file holding the password anyway.
  • @mniess You are wrong. The export MYSQL_PWD=... does not show up in the process list. Not even for a split second. This is because the export command is (and has to be) a shell builtin. Thus the shell doesn't fork/exec a process with the command's argument if you execute it in your shell.
  • @maxschlepzig your are right. In this case it doesn't matter because putting the password in ENV makes it visible to other users anyway (as warned against in the mysql documentation)