LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Other *NIX Forums > AIX
User Name
Password
AIX This forum is for the discussion of IBM AIX.
eserver and other IBM related questions are also on topic.

Notices

Reply
 
Search this Thread
Old 04-02-2004, 11:36 AM   #1
hbenway
LQ Newbie
 
Registered: Apr 2004
Posts: 1

Rep: Reputation: 0
Reset Root password


Does anyone know a method to reset a forgoten AIX root password
without rebooting the machine?
 
Old 04-02-2004, 01:25 PM   #2
fancypiper
Guru
 
Registered: Feb 2003
Location: Sparta, NC USA
Distribution: Ubuntu 10.04
Posts: 5,141

Rep: Reputation: 57
I'm not sure abour AIX, but the basic Linux root password is changed with the command (as root) passwd
 
Old 04-02-2004, 02:27 PM   #3
iainr
Member
 
Registered: Nov 2002
Location: England
Distribution: Ubuntu 9.04
Posts: 631

Rep: Reputation: 30
Unless you have a security hole that lets you break in as root, there is no way without rebooting (makes sense - otherwise what would the point of having a root password be).

Security holes (which you should fix if you have them) might include a /.rhosts file giving someone remote access as root, a world-writeable root-owned SUID file or something like that.
 
Old 04-08-2004, 01:22 PM   #4
looseCannon
Member
 
Registered: Dec 2003
Location: Little Rock, AR
Distribution: Fedora Core 2, AIX, HP-UX, Solaris, Whitebox
Posts: 193

Rep: Reputation: 31
If you've logged off the server then you are pretty well screwed. Unless you have promptless SSH set up, or maybe RSH.

The only other way I can think of is to reboot and go into a maintenance shell.
 
Old 04-22-2004, 02:28 PM   #5
zorba4
Member
 
Registered: Feb 2004
Location: Paris
Posts: 398

Rep: Reputation: 31
Right, loose, rebooting in maintenance shell is the only way.
@fancy : bad luck, you need to be logged as root in order to use the standard unix "passwd root" command.
 
Old 04-22-2004, 02:34 PM   #6
d3funct
Member
 
Registered: Jun 2001
Location: Centralia, WA
Posts: 274

Rep: Reputation: 31
If you have the ability to FTP as a user (admin, or some such) with read/write access to /etc/passwd on the box you could ftp to the box and get the /etc/passwd file, edit it removing the password for root (or the * if using shadowed passwords) and then ftp it back to the server. This will set the root password to NULL and you'll be able to get into the box.
 
Old 04-22-2004, 02:37 PM   #7
fancypiper
Guru
 
Registered: Feb 2003
Location: Sparta, NC USA
Distribution: Ubuntu 10.04
Posts: 5,141

Rep: Reputation: 57
Quote:
Originally posted by fancypiper
Linux root password is changed with the command (as root) passwd
Hm... I thought I mentioned that in the (as root) portion.
 
Old 04-22-2004, 04:53 PM   #8
looseCannon
Member
 
Registered: Dec 2003
Location: Little Rock, AR
Distribution: Fedora Core 2, AIX, HP-UX, Solaris, Whitebox
Posts: 193

Rep: Reputation: 31
Quote:
Originally posted by zorba4
Right, loose, rebooting in maintenance shell is the only way.
@fancy : bad luck, you need to be logged as root in order to use the standard unix "passwd root" command.

You know, thinking about this for a couple more minutes there could be another way. Just a wild shot in the dark, but this might work If you have a user in passwd group you might be able to change root's password with that user. [I]Might[I/]. Never tried it so I'm guessing here.
 
Old 08-11-2008, 11:42 AM   #9
pedor
LQ Newbie
 
Registered: Jul 2008
Posts: 6

Rep: Reputation: 0
can I reset the root password from SMS menu (without AIX CD-media)?
 
Old 08-19-2008, 04:13 PM   #10
Michael AM
Member
 
Registered: May 2006
Distribution: AIX 5.3, AIX 6.1, AIX 7.1
Posts: 95

Rep: Reputation: 23
No, you cannot reset from the SMS menu. The filesystem need to be mounted first. Any bootable media at the correct OS level (and patches) will work. The most common is a recent (mksysb) backup as it will have the correct drivers.

Once you get into the startup menu's (having selected a tape or a DVD backup to boot from, AIX will prompt (unless backups are setup to restore handsfree) and ask if you want to restore the backup, or go into maintenance mode.

Choose maintenance mode, and IPL varyon rootvg, and start a shell.
With the filesystems mounted (you can choose to start a shell without mounting the filesystems) just use the passwd command to change the password.

use the command sync to force the changed password to disk.
use the command reboot to restart the system and let AIX boot normally from the harddisk.

As looseCannon suggested:
If you have a user setup with the role "ManageAllPasswds" that user will be able to use the command pwdadm to change the root password.

$ lsrole ManageAllPasswds
ManageAllPasswds authorizations=PasswdAdmin rolelist=ManageBasicPasswds groups= visibility=1 screens=* msgcat=
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
reset root password kapslock Debian 14 07-27-2006 07:08 AM
How to reset forgotten root password comprookie2000 Linux - Newbie 4 10-28-2004 12:33 PM
Preventing root password reset J.W. Linux - Security 2 04-07-2004 03:04 AM
how do i stop root password reset? robhargreaves Linux - Security 3 01-31-2004 09:16 AM
Reset Root password sdsouza Linux - Software 5 11-12-2003 04:50 PM


All times are GMT -5. The time now is 12:17 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration