Cant log in to my droplet (ubuntu) from putty or Sftp after installing Logstash

Question

hi

i cant log in to my droplet from putty or Sftp after installing Logstash
I am trying to connect to the console using “root” as a user and root password (reset it) and doesn’t work

please help !!

Answer 1

Yannek October 28, 2020

I had to start new answer, I could not reply to an original post anymore.

Thank you for the details. I guess you get graphic user interface (GUI) rather than text console during booting your droplet. Is that right ? Had you got GUI in DO console before this issue started ?

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Answer 2

Yannek October 28, 2020

Hi,
What errors do you get when you are trying to connect (putty, SFTP) or login (DO conslole) ?

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dudumunsa October 28, 2020

console -> invalid login
putty or FTP -> timeout error

support says SSH on port 22 is blocked

i can only use the recovery console now to interact with my droplet
Reply Report
- Yannek October 28, 2020
  
  OK, let’s try something.
  
  1. First of all, create a snapshot of your droplet. If you get things worse, you will be able to restore the current state. Note that you will be charged for the time when snapshot exists. It is not expensive to have a snapshot for a short period of time, unless its size is huge.
  
  2. Launch DO recovery console.
  
  3. Choose from menu Mount Your Disk Image, ensure the filesystem is mounted (something like /dev/vda1 should appear)
  
  4. Choose Reset Droplet Root Password. Then enter a new password for a root user.
  
  5. Choose Unmount your Disk Image. Ensure the filesystem is unmounted.
  
  6. Enter Interactive Shell. Shutdown recovery system.
  
  shutdown -h now
  
  7. Launch DO console and try to log in as a root.
  
  Let me know how it works.
  
  Reply Report
  
  dudumunsa October 28, 2020
  
  iam getting msg
  
  sorry that didnt work. please try again
  
  Reply Report
  
  Yannek October 28, 2020
  
  Be more detailed, pls. Where and when do you get this message ?
  
  Reply Report
  
  dudumunsa October 28, 2020
  
  sorry
  
  I did all of the above
  after shutdown -h now on section 6
  
  I switch back to “boot from hard drive”
  then switch off and on the droplet
  
  tried to log in with user root and the new password and got this msg
  
  Reply Report

Answer 3

dudumunsa October 28, 2020

console -> invalid login
putty or FTP -> timeout error

support says SSH on port 22 is blocked

i can only use the recovery console now to interact with my droplet
Reply Report
- Yannek October 28, 2020
  
  OK, let’s try something.
  
  1. First of all, create a snapshot of your droplet. If you get things worse, you will be able to restore the current state. Note that you will be charged for the time when snapshot exists. It is not expensive to have a snapshot for a short period of time, unless its size is huge.
  
  2. Launch DO recovery console.
  
  3. Choose from menu Mount Your Disk Image, ensure the filesystem is mounted (something like /dev/vda1 should appear)
  
  4. Choose Reset Droplet Root Password. Then enter a new password for a root user.
  
  5. Choose Unmount your Disk Image. Ensure the filesystem is unmounted.
  
  6. Enter Interactive Shell. Shutdown recovery system.
  
  shutdown -h now
  
  7. Launch DO console and try to log in as a root.
  
  Let me know how it works.
  
  Reply Report
  
  dudumunsa October 28, 2020
  
  iam getting msg
  
  sorry that didnt work. please try again
  
  Reply Report
  
  Yannek October 28, 2020
  
  Be more detailed, pls. Where and when do you get this message ?
  
  Reply Report
  
  dudumunsa October 28, 2020
  
  sorry
  
  I did all of the above
  after shutdown -h now on section 6
  
  I switch back to “boot from hard drive”
  then switch off and on the droplet
  
  tried to log in with user root and the new password and got this msg
  
  Reply Report

Answer 4

dudumunsa October 28, 2020

Show answer This answer has been marked as resolved by dudumunsa.

Yannek October 28, 2020
By default you cannot log in as root user using GUI. So, there are two ways: (1) disabling GUI at startup, (2) enabling root login in GUI. If you do not mind working in text console, I suggest the first way. Here it is how to do that:

1. Launch DO recovery console.

2. Choose from menu Mount Your Disk Image, and then enter Interactive Shell.

3. Change root directory for your droplet’s one. But before that, bind some system resources. Execute following commands

mount -o bind /dev /mnt/dev
mount -o bind /dev/pts /mnt/dev/pts
mount -o bind /proc /mnt/proc
mount -o bind /sys /mnt/sys
mount -o bind /run /mnt/run
chroot /mnt

Now, your are in your droplet’s root directory.

4. Disable GUI.

systemctl set-default multi-user

You should get a message like that:

OutputRemoved /etc/systemd/system/default.target. Created symlink /etc/systemd/system/default.target → /lib/systemd/system/multi-user.target.

5. Exit your chrooted environment.

exit

6. Shutdown recovery environment

shutdown -h now

7. Launch DO console and try to log in as a root.

Let me know how it works.
Reply Report
- dudumunsa October 28, 2020
  
  it works thanks !
  
  i can now access my machine
  
  I disabled the firewall so I can log in remotely
  
  I am afraid that if I enabled it again I will lock outside again…
  
  any idea how to secure the droplet without locking myself ?
  
  thanks
  
  Reply Report
  
  Yannek October 28, 2020
  
  If you use ufw follow this tutorial. Step 3 is on allowing SSH.
  
  How To Set Up a Firewall with UFW on Ubuntu 20.04
  by Brian Boucheron
  This tutorial will show you how to set up a firewall with UFW on Ubuntu 20.04.
  
  Reply Report

Answer 5

Yannek October 28, 2020
By default you cannot log in as root user using GUI. So, there are two ways: (1) disabling GUI at startup, (2) enabling root login in GUI. If you do not mind working in text console, I suggest the first way. Here it is how to do that:

1. Launch DO recovery console.

2. Choose from menu Mount Your Disk Image, and then enter Interactive Shell.

3. Change root directory for your droplet’s one. But before that, bind some system resources. Execute following commands

mount -o bind /dev /mnt/dev
mount -o bind /dev/pts /mnt/dev/pts
mount -o bind /proc /mnt/proc
mount -o bind /sys /mnt/sys
mount -o bind /run /mnt/run
chroot /mnt

Now, your are in your droplet’s root directory.

4. Disable GUI.

systemctl set-default multi-user

You should get a message like that:

OutputRemoved /etc/systemd/system/default.target. Created symlink /etc/systemd/system/default.target → /lib/systemd/system/multi-user.target.

5. Exit your chrooted environment.

exit

6. Shutdown recovery environment

shutdown -h now

7. Launch DO console and try to log in as a root.

Let me know how it works.
Reply Report
- dudumunsa October 28, 2020
  
  it works thanks !
  
  i can now access my machine
  
  I disabled the firewall so I can log in remotely
  
  I am afraid that if I enabled it again I will lock outside again…
  
  any idea how to secure the droplet without locking myself ?
  
  thanks
  
  Reply Report
  
  Yannek October 28, 2020
  
  If you use ufw follow this tutorial. Step 3 is on allowing SSH.
  
  How To Set Up a Firewall with UFW on Ubuntu 20.04
  by Brian Boucheron
  This tutorial will show you how to set up a firewall with UFW on Ubuntu 20.04.
  
  Reply Report

Answer 6

dudumunsa October 28, 2020

thanks!

Reply Report

Yannek October 28, 2020

I am happy it helped :)
Reply Report

Answer 7

Yannek October 28, 2020

I am happy it helped :)
Reply Report

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