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.
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 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".