ssh: User not allowed shell does not exist

Question

Apache
CentosOS 5
Plesk 10

New on commandline and ssh.

While trying to get several users (root git friend) to ssh to the same shell and configuring passwordless connection I must have made a mistake.

I can no longer login over ssh as root or git but can as friend whose shell I transferred by editting etc/passwd. I luckily can still login on plesk so gui file editing is possible.

here's what I found in my sshd errorlog

sshd[11999]: User git not allowed because shell /bin/bash\r does not exist
sshd[12000]: input_userauth_request: invalid user git
sshd[11999]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=xxx.xxx.xxx.dynamic.upc.nl  user=git
sshd[11999]: Failed password for invalid user git from xxx.xxx.xxx port 54851 ssh2

I read something about sudo ing and incidently entering: causing the \r But where to restore? Here are some configurations

etc/ssh/sshd_config :

PubkeyAuthentication yes

ect/shells

/bin/sh
/bin/bash
/sbin/nologin
/bin/tcsh
/bin/csh
/bin/false
/usr/local/psa/bin/chrootsh
/bin/rbash

etc/passwd

git:x:10009:10009::/home/git:/bin/bash
friend:x:10010:10010::/home/git:/bin/bash

earlier I tried to install password less connecting so there is a .ssh/id_rsa file somewhere on the server and on my local machine.

After reading Git's famous "ERROR: Permission to .git denied to user"

I tried

ssh-add -l
Could not open a connection to your authentication agent

My problem resembles this: https://serverfault.com/questions/480806/ssh-root-access-denied-after-changing-shell

If I am logged over ssh as friend I cannot sudo to root:

sudo root 
friend is not in the sudoers file

nor can I chsh

[friend@vpsXXX ~]$ chsh -s /bin/bash root
chsh: Running UID doesn't match UID of user we're altering, shell change denied

Hope someone can clear this up for me.

Happy to supply more info if needed

score 2 · Answer 1 · answered Sep 19 '13 at 14:05

2

/bin/bash\r

means that you've edited the /etc/passwd or /etc/shells with a Windows editor as it contains Windows line feeds \r\n. Linux interprets only the \n and assumes that the remaining \r is part of the binary name.

Solution: Open the files in a Linux editor and remove the new line and add it again.

Also you could install the package tofrodos and execute:

fromdos /etc/passwd
fromdos /etc/shells

answered Sep 19 '13 at 14:05

hek2mgl

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correct, I did it in Plesk, now I try to learn vi quickly and first change the permissions to friend – Webconstructor Sep 19 '13 at 14:26
vim is the best choise for editing files IMO :) if you need something simpler for the start you can use `nano` or even `mc` – hek2mgl Sep 19 '13 at 14:50
Strange I tried to remove newlines but there weren't any. :wq But still the same error: /bin/bash\r – Webconstructor Sep 19 '13 at 14:56
Hmmm :wq is not correct for saving :x is so I read in the manual. Using vim now. But still the same error. Even after backspacing and entering again on every bin/bash line. – Webconstructor Sep 19 '13 at 15:17
have you tried `fromdos` ? – hek2mgl Sep 19 '13 at 15:25
I am bit scared about that. Will those files still be accessible / editable for Linux? Installing with Yum? – Webconstructor Sep 19 '13 at 15:33
fromdos just removes windows line feeds and turns them into linux line feeds. it is safe to use it – hek2mgl Sep 19 '13 at 16:01
Ok I will try. I the meantime I cannot ssh with friend no more. So I have to manage with plesk... – Webconstructor Sep 19 '13 at 16:08

ssh: User not allowed shell does not exist

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