root user password reset to connect through SSH on Sandbox 2.6

[#1]

Hi,

Could anyone please let me know how to reset password for root user to connect via ssh?

Thanks,

Satish.

[#2]

Hi @Satish Sarapuri

See this thread: https://community.hortonworks.com/questions/67916/reset-root-password-on-docker-sandbox.html

If you find this post useful, please "accept" the answer.

[#3]

Adding to the response. Take a look at the step-by-step instructions by @S Mahapatra in the link that Sonu provided.

[#4]

this link provide details on how to reset password for other users, not for root user. I want to reset password for "root" user.

[#5]

@Satish Sarapuri

Login to the docker instance as root with default password as "hadoop"

ssh root@127.0.0.1 -p 2222

.

The you can use "passwd" command to reset the password.

# passwd

[#6]

I used this command to change my password.

[#7]

@Jay SenSharma

Earlier, I have changed the default password "hadoop" to other password and forgot the changed one. Now,I want to reset the new password.

I tired with this default password "hadoop", but no luck.

[#8]

@Satish Sarapuri

At the Docker Level:

Did you try the following:

$PASS='YOUR_NEW_PASSSWORD'
echo -e "$PASS\n$PASS" | sudo docker exec -i <container-id-or-name> passwd

Or may be docker command option "RUN echo newtestpassword | passwd root" in a Dockerfile

At the OS level:

In single user mode you should be able to do so. Can you please try this: https://www.liberiangeek.net/2014/09/reset-forgotten-root-password-centos-7-servers/

[#9]

@Jay SenSharma,

To execute these commands, I have to get onto terminal ,to get on to terminal i have to use root or super other user credentials, but i have only root user and i am trying to reset the password for the same. Please let me know if I am missing anything here or is there any other way to acheive the same.

[#10 · Accepted solution]

I am able to get in with my old password.