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Full Discussion: How to Simulate parallel-ssh with variables ??
Top Forums Shell Programming and Scripting How to Simulate parallel-ssh with variables ?? Post 302960999 by lohith.dutta on Monday 23rd of November 2015 02:17:43 AM
Old 11-23-2015
How to Simulate parallel-ssh with variables ??
Code:
alias n-001='ssh hst-net-001'
alias n-002='ssh hst-net-002'
alias n-003='ssh hst-net-003'
alias n-004='ssh hst-net-004'

alias p-001='ssh hst-proxy-001'
alias p-002='ssh hst-proxy-002'
alias p-003='ssh hst-proxy-003'
alias p-004='ssh hst-proxy-004'

------------------------------------------------------------------------------------
root@hst-mgmt-001:~# pn-xxx "hostname;uptime"
Code:
[1] 07:01:30 [SUCCESS] hst-net-004
hst-net-004
 07:01:30 up 341 days, 11:46,  0 users,  load average: 0.45, 0.28, 0.22
[2] 07:01:30 [SUCCESS] hst-net-001
hst-net-001
 07:01:30 up 341 days, 12:43,  0 users,  load average: 0.63, 0.52, 0.44
[3] 07:01:30 [SUCCESS] hst-net-002
hst-net-002
 07:01:30 up 341 days, 12:25,  0 users,  load average: 0.30, 0.32, 0.29
[4] 07:01:30 [SUCCESS] hst-net-003
hst-net-003
 07:01:30 up 341 days, 12:11,  0 users,  load average: 0.38, 0.29, 0.25

root@hst-mgmt-001:~# pp-xxx "hostname;uptime"
Code:
[1] 07:04:05 [SUCCESS] hst-proxy-001
hst-proxy-001
 07:04:05 up 527 days, 12:52,  0 users,  load average: 0.33, 0.34, 0.28
[2] 07:04:05 [SUCCESS] hst-proxy-002
hst-proxy-002
 07:04:05 up 527 days, 12:30,  0 users,  load average: 0.00, 0.01, 0.05
[3] 07:04:05 [SUCCESS] hst-proxy-003
hst-proxy-003
 07:04:05 up 520 days, 10:29,  0 users,  load average: 0.03, 0.04, 0.05
[4] 07:04:05 [SUCCESS] hst-proxy-004
hst-proxy-004
 07:04:05 up 520 days,  9:51,  0 users,  load average: 0.00, 0.01, 0.05

------------------------------------------------------------------------------------


The above outputs are from one of my Production box. I would like to understand here how the 'parallel-ssh' is extracting values from 'xxx' ??
Last edited by Franklin52; 11-23-2015 at 10:42 AM.. Reason: Adding code tags
 

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LEARN ABOUT NETBSD

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.

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
								  August 31, 2010							       BSD
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