Useradd on 200 servers from one server. Post: 302899638

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Top Forums Shell Programming and Scripting Useradd on 200 servers from one server. Post 302899638 by rbatte1 on Wednesday 30th of April 2014 12:03:14 PM

04-30-2014

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If you put the public SSH key on each of the servers, then you will be able to have password-less authentication to run the commands. Do you know how to generate the keys and what to do with them?

If you are running as the root user, then you will need to make sure that the /etc/ssh/sshd.conf configuration file permits root login. There are a number of options to consider and balance against the risks.

I'm afraid that there is no easy way to get them onto each server - it will be a manual task, but the investment of time in a one off action.

Note
When you are adding your users, you will need to make sure that their UID is unique too. Some servers will object if you try to add a user with a specific UID that already exists. You could get away with not specifying the UID, but then if you are NFS sharing files (or moving them keeping original permissions) then you will all sorts of problems because files are owned by the UID not the alphabetic userid.

I agree with jlliagre that you would be better to use NIS (historically also known as YP) or LDAP. Once set up, that would cut down the administration effort.

Robin

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LEARN ABOUT DEBIAN

machine-info

MACHINE-INFO(5) 						   machine-info 						   MACHINE-INFO(5)

NAME

       machine-info - Local machine information file

SYNOPSIS

       /etc/machine-info

DESCRIPTION

       The /etc/machine-info file contains machine meta data.

       The basic file format of machine-info is a newline-separated list of environment-like shell-compatible variable assignments. It is possible
       to source the configuration from shell scripts, however, beyond mere variable assignments no shell features are supported, allowing
       applications to read the file without implementing a shell compatible execution engine.

       /etc/machine-info contains meta data about the machine that is set by the user or administrator.

       Depending on the operating system other configuration files might be checked for machine information as well, however only as fallback.

OPTIONS

       The following machine meta data parameters may be set using /etc/machine-info:

       PRETTY_HOSTNAME=
	   A pretty human-readable UTF8 machine identifier string. This should contain a name like Lennart's Laptop which is useful to present to
	   the user and does not suffer by the syntax limitations of internet domain names. If possible the internet host name as configured in
	   /etc/hostname should be kept similar to this one. Example: if this value is Lennart's Computer an Internet host name of
	   lennarts-computer might be a good choice. If this parameter is not set an application should fall back to the Internet host name for
	   presentation purposes.

       ICON_NAME=
	   An icon identifying this machine according to the XDG Icon Naming Specification[1]. If this parameter is not set an application should
	   fall back to computer or a similar icon name.

EXAMPLE

	   PRETTY_HOSTNAME="Lennart's Computer"
	   ICON_NAME=computer-laptop

SEE ALSO

       systemd(1), os-release(5), hostname(5), machine-id(5)

AUTHOR

       Lennart Poettering <lennart@poettering.net>
	   Developer

NOTES

	1. XDG Icon Naming Specification
	   http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html

systemd 							    10/07/2013							   MACHINE-INFO(5)