How to reset
root’s password in centos 7
New
Centos 7 is a bit different from the previous version which we can go to reset
root password easily.
So now
I will show you how to reset root password in centos 7.
To get
started, turn on the machine that you’ve forgotten the root password on. For
CentOS 7 devices, you’ll be given 5 seconds at the boot menu to select the
operating system kernel to boot into.
That 5
seconds is important, because allows for admins to select different
kernels or edit existing kernel parameters before booting.
At the
boot menu, press e to edit the existing kernel (Core) as shown
below.
Next,
scroll down to the list until you see the line underlined below ( ro )
. What we need to do is change that ro to rw and start into a bash shell. It
should look like this rw init=/sysroot/bin/sh.
Change
the ro line to rw and add init=/sysroot/bin/sh
After
changing that, press Control + X or Ctrl + X on
your keyboard to start into single user mode using the bash shell specified
above. In this mode, we’re going to change the root password.
In the
single user mode, run the command as shown below
chroot
/sysroot
Finally,
run the commands below to change the root password.
You’ll
be prompted to create and confirm a new password. After creating the
password, run the commands below to update SELinux parameters
touch
/.autorelabel
