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Top Forums UNIX for Dummies Questions & Answers Running commands on remote machines Post 302740675 by SkySmart on Thursday 6th of December 2012 02:51:22 PM
Old 12-06-2012
Running commands on remote machines

so i want to monitor a variety of things on hundreds of servers. the old process was to have an agent running on each one of these servers.

but now i'm looking to see if its possible to have agentless monitoring. the only other straight forward option other than having an agent on the hosts, is to use ssh. but i dont know how to go about this.

I have 2 hosts that will serve as the monitoring servers. One will be Primary, the second will be Backup. the secondary will have the same exact setup as the primary.

what do i need to do on these two hosts to be able to log into all my servers and run the commands i need to run? vmstat, uptime, mpstat etc.

The number of servers i need to monitor is 600.
The OS running on these servers is a mixture of Sun Solaris and Linux Red Hat.
 

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yppush(8yp)															       yppush(8yp)

Name
       yppush - force propagation of a changed yellow pages (YP) map

Syntax
       yppush [ -d domain ] [ -v ] mapname

Description
       The  command copies a new version of a yellow pages (YP) map from the master YP server to the slave YP servers.	It is normally run only on
       the master YP server by the utility accessing the after the master YP databases have been changed.  When invoked, first constructs  a  list
       of YP server hosts by reading the YP map ypservers within the domain.  Keys within the map ypservers are the ASCII names of the machines on
       which the YP servers run.

       A transfer map request is sent to the YP server at each host, along with the information needed by the transfer agent  (the  program  which
       actually  moves the map) to call back the command.  When the attempt has completed (successfully or not), and the transfer agent has sent a
       status message, the results can be printed to stdout.  Messages are also printed when a transfer is not possible,  for  instance  when  the
       request message is undeliverable, or when the timeout period on responses has expired.

       Refer to and for an overview of the yellow pages.

Options
       -d     Specify a domain.

       -v     Verbose.	 This causes messages to be printed when each server is called, and for each response.	Without this flag, only error mes-
	      sages are printed.

Restrictions
       In the current implementation (version 2 YP protocol), the transfer agent is which is started by the program.  If detects that it is speak-
       ing  to	a  version  1  YP protocol server, it uses the older protocol, sending a version 1 YPPROC_GET request and issues a message to that
       effect.	Unfortunately, there is no way of knowing if or when the map transfer was performed for version 1 servers.  The command  prints  a
       message	saying that an old-style message has been sent.  The system administrator should later check to see that the transfer has actually
       taken place.

Files
       /etc/yp/domainname/ypservers.{dir, pag}

See Also
       ypfiles(5yp), ypserv(8yp), ypxfr(8yp)

																       yppush(8yp)
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