How to use with `sudo`?

[slhck]

When running sudo I get:

$ sudo su
[E] test2.example.com -> sudo: no tty present and no askpass program specified
[E] test.example.com -> sudo: no tty present and no askpass program specified
[E] example.com -> sudo: no tty present and no askpass program specified

Is there any way to circumvent this?

[boussou]

it is ssh problem (or say security measure), you should use "sudo yourcmd" each time

[dermoumi]

it is ssh problem (or say security measure), you should use "sudo yourcmd" each time

No, sudo yourcmd shows the same error because it asks for the password and hss doesn't provide a tty (i think?), i'm still looking for a solution

[avently]

@six-ddc could you please suggest how to deal with the inability to run a command with sudo? I tried hss -H '-tt hostname' but hss can't work this way. What is an alternative solution that works for you?

[six-ddc]

@avently As mentioned above, If your sudo cmd requires a password, it is not supported in batch mode like hss(no tty), maybe you should setup no-password in /etc/sudoers. https://askubuntu.com/questions/334318/sudoers-file-enable-nopasswd-for-user-all-commands

[avently]

I could setup it but I prefer to enter a password because this way I know when scripts I run require a sudo command execution (which is not always a good idea so I can Ctrl+C in this case).

Is it possible to support providing tty somehow (technically)?

P.S. I made a bash function that can run commands with sudo cmd on a list of servers but it can't work in parallel because if no tty too

[slhck]

I have given up on finding a solution for this with bash tools. I now use Ansible for such tasks. It handles sudo well. Use the ad hoc mode to run arbitrary commands.

Basically, you can set up an inventory file and then run:

ansible all --ask-become-pass --become -a 'apt install blah'

This will run the command with sudo on all (all) hosts defined in the inventory.

[six-ddc]

@avently Try this way echo <password> | sudo -S <command>. One command, and 'sudo' explicitly.

[avently]

@six-ddc this trick will work only if you have the same password on all servers and you want to run one command with root. Also it's not a good thing for security to have password printed in a list of processes. So, better to use for such cases one-liner in bash which allows to enter a password in a right way. Or to use Ansible, as stated above. If it's technically possible, I would prefer native support in hss.

For example, using this command I almost able to enter a password, but hss doesn't work this way correctly:

hss -H '-tt host'
$ sudo ls
(shows nothing)
^C
(prints) [sudo] password for user: $ ^C

So close to solution:)