Prompt password using standard input.
Produce md5 authentication password to authentication file pool_passwd.
When producing a md5 authentication password, create the pool_passwd entry for your_username.
Specify the path to the pgpool.conf configuration file.
Specifies file containing user name and password pairs.
The following are examples to encrypt your password into md5 hash format for pcp.conf.
$ pg_md5 -p password: [your password]
or
$ pg_md5 [your password] acbd18db4cc2f85cedef654fccc4a4d8
pg_md5 can also be used for adding an entry of user name and md5 encrypted password to pool_passwd authentication file.
$ pg_md5 -m -f /path/to/pgpool.conf -u username -p
password: [your password]
$ cat /path/to/pool_passwd
username:md55a231fcdb710d73268c4f44283487ba2
To avoid password prompt or password in command parameter, pg_md5 can read user name:password pairs from file. It will add all user names and md5 hashed password to pool_passwd authentication file.
$ cat users.txt
username1:secretpassword1
username2:secretpassword2
$ pg_md5 -m -f /path/to/pgpool.conf -i users.txt
trying to read username:password pairs from file users.txt
$ cat /path/to/pool_passwd
username1:md533314126ba0b187df1e37f5ce6a489a8
username2:md58ae92c6e1d6a48d80e2583fe715e2b36
To just display the md5 hashed string, not adding an entry to pool_passwd, pass a string concatenating password and user name. For example, if password is "password" and user name is "user", the output would be:
$ pg_md5 passworduser
4d45974e13472b5a0be3533de4666414
Please note that the actual entry to be inserted into pool_passwd should have "md5" on top of the result string. That is: "md54d45974e13472b5a0be3533de4666414".