I'm trying to write a simple script to mysqldump some dbs. I'm getting stuck on the password prompt though.
I'd like to just have a config file that contains all the db creds, then the script can use those to connect to the db.
Problem is a command such as:
system('mysqldump -u username -p')
then prompts for
Enter password:
even when I do something like:
system('mysqldump -u username -p some_password')
I still get prompted for the password...
I don't do a whole lot of scripting in Ruby so I'm at a loss as to how my script can automatically enter this info so the user running the script doesn't have to.
If you already know the password why aren't you passing it to the command?
system('mysqldump -u username --password=mypassword')
you need to delete space after -p
system('mysqldump -uusername -psome_password')
or without password just
system('mysqldump -uusername')
or
system('mysqldump -uusername --password=')
you could always check the application that uses the database for the password, check the config file file for the connection string. Failing that change the password in the database.
Related
I am trying to use a one word alias to access a postgres database, the problem I am having is it needs a carriage return to work. Can anyone help me to get it to log in without the carriage return?
This is my alias which is in an environment file I am dotting:
alias pgres='psql --host cloudpoc.test.com.au -p 8367 -U kevin -W kev_db'
This is my .pgpass file which is in the users home directory:
cloudpoc.test.com.au:8367:kev_db:kevin:kevpass123
If I type "pgres" then I get a prompt for a password. I have to hit enter again to log in.
Shouldn't it just log me straight in?
Prompting for a password is what -W is for. If you don't want that behavior, then don't use -W.
You can specify the database connection parameters in a postgresql service file called ~/.pg_service.conf in you home. Based on your connection string:
cloudpoc.test.com.au:8367:kev_db:kevin:kevpass123
You would enter the following in ~/.pg_service.conf:
# Kevin's database service
[kev]
host=cloudpoc.test.com.au
port=8367
user=kevin
dbname=kev_db
password=kevpass123
And you would then connect to the database with:
psql service=kev
I have installed my Postgresql database on a Windows server environment. I'd like to schedule a job using Windows Task scheduler to run every night so I need to run the following command without asking for password:
psql -U myUserName-d myDBName -c "select MyFunctionName()"
When I run the above query in my cmd shell, it asks me for password. When I enter the password manually, the function is correctly run.
So my solution is to read from the pgpass.conf file so no password is required.
Here are the things I have done to achieve this:
I created the pgpass.conf file in a directory I created in the %appdata% (AppData\Roaming\postgresql to be precise).
Here are the contents of this file:
localhost:5432:myDBName:myUserName:myPassword
I have also tried with the value 127.0.0.1 instead of localhost above.
I, then, added the an environment variable (in the user variables for administrator list) called PGPASSFILE and gave it the pgpass.conf location.
;C:\Users\administrator\AppData\Roaming\postgresql\pgpass.conf
Finally I stopped and restarted my Postgres service on Windows services and re-ran the command. But it is still asking for password.
How can I let my command know from where to read the password?
If you don't want to set the PGPASSFILE environment variable, put the password file in the standard location %APPDATA%\postgresql\pgpass.conf as described by the documentation.
I am building a bash script for my work to make initial setup and windows-domain join for our Ubuntu machines easy enough for someone who knows nothing about Linux can do it. I have found a lot of people that say that you shouldn't pass passwords through a script but to be efficient, I have to. The script prompts for info and credentials in the beginning and it needs to be able to be left to do it's job without interaction. I can't have it visible through ps when I pass it and I can't have it stored as an unsecured variable. Any suggestions?
If you really must do this, you can read the credentials into variables with read -s early in the script and then pass those values to the prompts. For example:
read -p "Enter your username: " username
read -sp "Enter your password: " password
echo
I included the blank echo because the -s option for read prevents the user's typing from appearing in the terminal, including the new line usually created after a user presses Enter when answering a prompt.
You can then use the $username and $password variables for the rest of your script and the credentials will not have to be stored outside of memory, meaning they will be lost/destroyed after the script completes.
However, note that any programs or utilities which take the credentials as command-line arguments will display those to other users on the machine running the script. For example, if I were to run a MySQL query using this method, I could do:
mysql -u "${username}" -p"${password}" -e "SHOW DATABASES;"
Other users on the machine could see the credentials while that was running with something like ps:
ps -ef | grep mysql
...
watrudoin 29512 29443 0 12:57 pts/4 00:00:00 mysql -u MyUserName -phunter2 -e SHOW DATABASES
You just need to be aware that what you are doing is not necessarily secure, but it seems that you already are.
i have installed Mysql on Windows7, i used mysql with mysql command line client & i also use Mysqldump in windows cmd, & it was working without any problem. But today, i tried to export database using mysqldump with this command in cmd
mysqldump –u root -p mypassword db_name > f:\mydb.sql
i tried many other commands and i always see error
Access Denied for User 'ODBC'#'localhost' (using password: yes) when trying to connect
as you can see, in mysqldump command i am using root as user then why i get user ODBC error ? one more thing, using mysql command line client i am still using mysql normally without any problem using root as user. i also tried to login in cmd with this command
mysql –u root -p mypassword
but still same error. and my password is 100% correct. kindly tell me how to solve this problem. Thanks
Have you tried storing pass in the cfg file? http://dev.mysql.com/doc/refman/5.7/en/password-security-user.html
try from command line:
mysql -u root -p
and then, when you are being asked for password, just type it.
Try the same with mysqldump command without typing your password after -p.
I wrote a shell script to automate mysqldump.
I don't want my password to be entered in the script file. Can anyone suggest me an alternative way to do this?
If you are running the script interactively, then you can use read to read the password into an environmental variable, and then echo that password to mysqldump.
read -s -p 'password: ' password
echo "$password" | mysqldump ...
The password will be stored in plain text in memory but not elsewhere.
Alternatively as per the documentation you can use an option file to avoid giving the password on the command line. The file would contain something similar to the below:
[client]
# The following password will be sent to all standard MySQL clients
password="my_password"