10-12-2010
How to sudo to multiple users?
Hi all,
I have to create SSH public key for multiple users.
Iam creating a script in which, through root, I have to switch to multiple accounts to create SSH keys and then transfer it to the respective servers.
First I tried with single user id and everything worked fine.
When I try to sudo from root to different user id, it just going to to command prompt.
I have to maually exit from command prompt to execut the next steps in the script.
When the script execute the follwoing...
sudo [-su] user1
The control goes too...
~/home/user1>
So how can I avoid this manual intervention, so that I can execute the ssh-keygen for multiple users from single script.
Thanks in advance.
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LEARN ABOUT CENTOS
ssh-keysign
SSH-KEYSIGN(8) BSD System Manager's Manual SSH-KEYSIGN(8)
NAME
ssh-keysign -- ssh helper program for host-based authentication
SYNOPSIS
ssh-keysign
DESCRIPTION
ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication with
SSH protocol version 2.
ssh-keysign is disabled by default and can only be enabled in the global client configuration file /etc/ssh/ssh_config by setting
EnableSSHKeysign to ``yes''.
ssh-keysign is not intended to be invoked by the user, but from ssh(1). See ssh(1) and sshd(8) for more information about host-based authen-
tication.
FILES
/etc/ssh/ssh_config
Controls whether ssh-keysign is enabled.
/etc/ssh/ssh_host_dsa_key
/etc/ssh/ssh_host_ecdsa_key
/etc/ssh/ssh_host_rsa_key
These files contain the private parts of the host keys used to generate the digital signature. They should be owned by root, read-
able only by root, and not accessible to others. Since they are readable only by root, ssh-keysign must be set-uid root if host-
based authentication is used.
/etc/ssh/ssh_host_dsa_key-cert.pub
/etc/ssh/ssh_host_ecdsa_key-cert.pub
/etc/ssh/ssh_host_rsa_key-cert.pub
If these files exist they are assumed to contain public certificate information corresponding with the private keys above.
ENVIRONMENT
SSH_USE_STRONG_RNG
The reseeding of the OpenSSL random generator is usually done from /dev/urandom. If the SSH_USE_STRONG_RNG environment variable is
set to value other than 0 the OpenSSL random generator is reseeded from /dev/random. The number of bytes read is defined by the
SSH_USE_STRONG_RNG value. Minimum is 14 bytes. This setting is not recommended on the computers without the hardware random genera-
tor because insufficient entropy causes the connection to be blocked until enough entropy is available.
SEE ALSO
ssh(1), ssh-keygen(1), ssh_config(5), sshd(8)
HISTORY
ssh-keysign first appeared in OpenBSD 3.2.
AUTHORS
Markus Friedl <markus@openbsd.org>
BSD
July 16, 2013 BSD