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Disable multiple ssh logins for an OS user in Solaris

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Old 06-13-2019
Disable multiple ssh logins for an OS user in Solaris
Hi folks,
I am fairly a beginner when it comes to Solaris OS administration, but part of my job somehow has scope to provide L1-level of OS administration over a few solaris servers.

Now, we have a requirement to limit the number of simultaneous ssh logins/sessions to the server, sort of similar to a windows server where an OS windows account can only be used one at a time, so if another colleague logged in to that same windows server, my current RDP session will be cut off.

Is there any way to do the same for a solaris server? My servers are on SunOS 5.11 11.3 sun4v sparc.

I've done some googling and I see the files "/etc/limits" and "/etc/security/limits.conf" being mentioned but I don't have those in my server.

Any input from the community will be very much appreciated.
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LEARN ABOUT DEBIAN

knife-ssh

KNIFE-SSH(1)							    Chef Manual 						      KNIFE-SSH(1)

NAME

       knife-ssh - Run a command or interactive session on multiple remote hosts

SYNOPSIS

       knife ssh QUERY COMMAND (options)

       -a, --attribute ATTR
	      The attribute to use for opening the connection - default is fqdn

       -C, --concurrency NUM
	      The number of concurrent connections

       -m, --manual-list
	      QUERY is a space separated list of servers

       -P, --ssh-password PASSWORD
	      The ssh password

       -x, --ssh-user USERNAME
	      The ssh username

       -i, --identity-file IDENTITY_FILE
	      The SSH identity file used for authentication

       -p, --ssh-port PORT
	      The ssh port

       --[no-]host-key-verify
	      Verify host key, enabled by default.

DESCRIPTION

       The  ssh  sub-command  opens  an  ssh  session  to each of the nodes in the search results of the QUERY. This sub-command requires that the
       net-ssh-multi and highline Ruby libraries are installed. On Debian systems, these are the libnet-ssh-multi-ruby and libhighline-ruby  pack-
       ages. They can also be installed as RubyGems (net-ssh-multi and highline, respectively).

TERMINAL MULTIPLEXING AND TERMINAL TAB SUPPORT

       knife  ssh integrates with several terminal multiplexer programs to provide a more convenient means of managing multiple ssh sessions. When
       the COMMAND option matches one of these, knife ssh will create multiple interactive ssh sessions running locally  in  the  terminal  multi-
       plexer instead of invoking the command on the remote host.

       The available multiplexers are:

       interactive
	      A built-in multiplexer. interactive supports running commands on a subset of the connected hosts in parallel

       screen(1)
	      Runs ssh interactively inside screen. ~/.screenrc will be sourced if it exists.

       tmux(1)
	      Runs ssh interactively inside tmux.

       macterm (Mac OS X only)
	      Opens  a	Terminal.app  window and creates a tab for each ssh session. You must install the rb-appscript gem before you can use this
	      option.

SEE ALSO

       knife-search(1)

AUTHOR

       Chef was written by Adam Jacob adam@opscode.com with many contributions from the community.

DOCUMENTATION

       This manual page was written by Joshua Timberman joshua@opscode.com. Permission is granted to copy, distribute and / or modify  this  docu-
       ment under the terms of the Apache 2.0 License.

CHEF

       Knife is distributed with Chef. http://wiki.opscode.com/display/chef/Home

Chef 10.12.0							     June 2012							      KNIFE-SSH(1)