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Re: myqsl dummy needs help



On Monday 16 February 2009, Robert L Cochran wrote:
>That is to say, on the initial installation of a MySQL server, there is
>indeed a 'root'@'localhost' account, but it has no password. See page
>609 of MySQL, Third Edition, by Paul DuBois and read through the next
>several pages.
>
>I just did this for a new MySQL installation on one of my test boxes and
>was able to set the root password with only a little fussiness from
>mysqladmin. I first set the password for localhost, then logged into the
>mysql server as 'root'@'localhost' and set the password for
>'root'@'my.box.name'. You need to set both these passwords for root.
>Then I tested my login and did a few easy queries such as 'show
>databases;' and I was all set.
>
>Bob
>
>Robert L Cochran wrote:
>> There is a 'root'@'localhost' account, but it has no password. For more
>> information see the MySQL knowledgebase at www.mysql.com.
>>
>> Been there, done that.
>>
>> Bob
>>
>> Craig White wrote:
>>> On Mon, 2009-02-16 at 11:06 -0500, Robert L Cochran wrote:
>>>> All the heavier-weight database engines have their own user accounts, so
>>>> they can grant or restrict permissions to various databases and tables
>>>> based on who the user is. MySQL does this. Even though mysql has a root
>>>> user that user is totally separate from the OS root account. You can
>>>> also have a mysql user account named mickey even though your host box
>>>> does not have such a user. So think only in terms of the defined MySQL
>>>> users.
>>>>
>>>> You need to reset the MySQL root user password.

I have done this 5 times now.

>>>> There may be no password to start with. I wonder what happens if you
>>>> just press enter when prompted for the password. If there is no
>>>> password, then you can set one using mysqladmin.

mysqladmin is also being denied access.
[root coyote /]# mysqladmin
mysqladmin  Ver 8.41 Distrib 5.0.45, for redhat-linux-gnu on i386
Copyright (C) 2000-2006 MySQL AB
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license

Administration program for the mysqld daemon.
Usage: mysqladmin [OPTIONS] command command....
  -c, --count=#       Number of iterations to make. This works with -i
                      (--sleep) only.
  -#, --debug[=name]  Output debug log. Often this is 'd:t:o,filename'.
  -f, --force         Don't ask for confirmation on drop database; with
                      multiple commands, continue even if an error occurs.
  -C, --compress      Use compression in server/client protocol.
  --character-sets-dir=name
                      Directory where character sets are.
  --default-character-set=name
                      Set the default character set.
  -?, --help          Display this help and exit.
  -h, --host=name     Connect to host.
  -p, --password[=name]
                      Password to use when connecting to server. If password is
                      not given it's asked from the tty.
  -P, --port=#        Port number to use for connection.
  --protocol=name     The protocol of connection (tcp,socket,pipe,memory).
  -r, --relative      Show difference between current and previous values when
                      used with -i. Currently works only with extended-status.
  -O, --set-variable=name
                      Change the value of a variable. Please note that this
                      option is deprecated; you can set variables directly with
                      --variable-name=value.
  -s, --silent        Silently exit if one can't connect to server.
  -S, --socket=name   Socket file to use for connection.
  -i, --sleep=#       Execute commands again and again with a sleep between.
  --ssl               Enable SSL for connection (automatically enabled with
                      other flags). Disable with --skip-ssl.
  --ssl-ca=name       CA file in PEM format (check OpenSSL docs, implies
                      --ssl).
  --ssl-capath=name   CA directory (check OpenSSL docs, implies --ssl).
  --ssl-cert=name     X509 cert in PEM format (implies --ssl).
  --ssl-cipher=name   SSL cipher to use (implies --ssl).
  --ssl-key=name      X509 key in PEM format (implies --ssl).
  --ssl-verify-server-cert
                      Verify server's "Common Name" in its cert against
                      hostname used when connecting. This option is disabled by
                      default.
  -u, --user=name     User for login if not current user.
  -v, --verbose       Write more information.
  -V, --version       Output version information and exit.
  -E, --vertical      Print output vertically. Is similar to --relative, but
                      prints output vertically.
  -w, --wait[=#]      Wait and retry if connection is down.
  --connect_timeout=#
  --shutdown_timeout=#

Variables (--variable-name=value)
and boolean options {FALSE|TRUE}  Value (after reading options)
--------------------------------- -----------------------------
count                             0
force                             FALSE
compress                          FALSE
character-sets-dir                (No default value)
default-character-set             (No default value)
host                              (No default value)
port                              0
relative                          FALSE
socket                            (No default value)
sleep                             0
ssl                               FALSE
ssl-ca                            (No default value)
ssl-capath                        (No default value)
ssl-cert                          (No default value)
ssl-cipher                        (No default value)
ssl-key                           (No default value)
ssl-verify-server-cert            FALSE
user                              (No default value)
verbose                           FALSE
vertical                          FALSE
connect_timeout                   43200
shutdown_timeout                  3600

Default options are read from the following files in the given order:
/etc/my.cnf ~/.my.cnf /etc/my.cnf
The following groups are read: mysqladmin client
The following options may be given as the first argument:
--print-defaults        Print the program argument list and exit
--no-defaults           Don't read default options from any options file
--defaults-file=#       Only read default options from the given file #
--defaults-extra-file=# Read this file after the global files are read

Where command is a one or more of: (Commands may be shortened)
  create databasename   Create a new database
  debug                 Instruct server to write debug information to log
  drop databasename     Delete a database and all its tables
  extended-status       Gives an extended status message from the server
  flush-hosts           Flush all cached hosts
  flush-logs            Flush all logs
  flush-status          Clear status variables
  flush-tables          Flush all tables
  flush-threads         Flush the thread cache
  flush-privileges      Reload grant tables (same as reload)
  kill id,id,...        Kill mysql threads
  password new-password Change old password to new-password, MySQL 4.1 hashing.
  old-password new-password Change old password to new-password in old format.

  ping                  Check if mysqld is alive
  processlist           Show list of active threads in server
  reload                Reload grant tables
  refresh               Flush all tables and close and open logfiles
  shutdown              Take server down
  status                Gives a short status message from the server
  start-slave           Start slave
  stop-slave            Stop slave
  variables             Prints variables available
  version               Get version info from server
[root coyote /]# mysqladmin ping
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: NO)'
[root coyote /]# mysqladmin create mythtv
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: NO)'


>>>> When you first start 
>>>> the mysqld server using 'service start mysqld' the syntax of the command
>>>> is explained to you right on the terminal window.

Not here:
[root coyote /]# service mysqld start
Starting MySQL:                                            [  OK  ]
[root coyote /]#                                                        
>>>> One more point. If you want to assign a password to a user on a specific
>>>> host machine, such as 'mickey'@'mickeymouse.m1.org' then I believe that
>>>> at the time someone attempts to log in with that username the actual
>>>> machine name must resolve correctly on dns to 'mickeymouse.m1.org' or
>>>> the user 'mickey' must have a password defined for the localhost machine
>>>> ('mickey'@'localhost').
>>>>
>>>> To do reset the root password correctly, you can find copious details on
>>>> the MySQL knowledgebase. Go to www.mysql.com and search off their
>>>> knowledgebase. There is a method described for changing the password for
>>>> the root user, but it is fairly complicated. I've used it successfully
>>>> once or twice before when I made a mess of my own mysql root password.
>>>>
>>>> Another great resource is to read Paul DuBois book "MySQL". It is really
>>>> the bible of all things MySQL. If you intend to use MySQL seriously then
>>>> this book is mandatory purchasing and reading.
>>>
That book is a minimum of 60 miles away.  But I did install the man pages, 
which one might be helpful?

>>> ----
>>> I think original setup for mysql is for root user via local socket and
>>> not via localhost so there actually isn't an account for root localhost
>>> thus attempting to connect via tcp/ip as root is doomed to fail out of
>>> the box.
>>>
>>> Craig



-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Mal: "Jayne! Your mouth is talking, you'd might wanna look to that."
				--Episode #1, "Serenity"


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