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f5newuser_18231's avatar
f5newuser_18231
Icon for Nimbostratus rankNimbostratus
Jan 05, 2016
Solved

How to reset admin password on F5 BIG IP LTM 2000 v11.2.1?

I need help to reset the admin password in our F5 LTM, since I cannot login the default password anymore (weird).

 

Anybody can help me to do the step by step guide on how to do it?

 

10 Replies

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus

    Hi,

    Do you know the root password? If not then you'll need to reset as per Vitaliy's instructions first.

    If you do know the root password or you've reset it, then to reset the admin password you need to have an SSH / Console session. Login as root and type in

    tmsh modify auth user admin prompt-for-password
    , it will then prompt you for a new password and then you will need to save this
    tmsh save sys config

    Hope this helps,

    N

    • f5newuser_18231's avatar
      f5newuser_18231
      Icon for Nimbostratus rankNimbostratus
      I'm having issues following the instruction in starting the system in single-user mode. Can you provide me a simple step by step guide?
    • Vitaliy_Savrans's avatar
      Vitaliy_Savrans
      Icon for Nacreous rankNacreous
      Do you use this soulution https://support.f5.com/kb/en-us/solutions/public/4000/100/sol4178.html
    • f5newuser_18231's avatar
      f5newuser_18231
      Icon for Nimbostratus rankNimbostratus
      Yes I have followed that link. I just used the command passwd root and I didn't use the mount -a. What is the importance of this command mount -a ?
  • Hi Nathan,

     

    Im done changing the root password via single user mode using grub97. I also successfully changed the admin password in tsmh.

     

    thanks a lot!