If you run an ssh command remotely the stdout from the command is returned to your local terminal. You can capture it there and send to a local file. So, say you want the output of the date command from multiple servers put in a file and then emailed. You could just:
Code:
#!/bin/bash
hosts=( host1 host2 host3 )
for ((i=0;i<${#hosts[@]};i++)); do
ssh me@${hosts[$i]} "date" >> outputfile &
done
wait
mail -s "Results" me@domain.com < outputfile
if it's a script that has to run they you could have it in a shared location and run it
If there's something in the script that varies by server you're just going to have to work that out. Either have a different script in each location or, if you need more automation, have it accept command line input for the difference and pass it with the script:
Code:
#!/bin/bash
hosts=( host1 host2 host3 )
var=( var1 var2 var3 )
for ((i=0;i<${#hosts[@]};i++)); do
ssh me@${hosts[$i]} "/path/to/script.sh ${var[$i]}" >> outputfile &
done
wait
mail -s "Results" me@domain.com < outputfile
(As you can see I'm an array junkie. Might be overkill here. Dunno. Works for me though If you need any parts of my example explained please don't hesitate to ask)
I want to write a Kshell program which will start the servers(Oracle,DataIntegrator).
Can anybody help me with this?
I would appreciate your help.
Thanks in advance (0 Replies)
Hi to all
now we running mksysb to nim on aix servers.
we are planning to take mksysb from vio servers.
can we use the same script for vio servers.
thanks (10 Replies)
Hi,
I have to run several unix commands like lsof or sed and need to execute across different servers as part of my monitoring tasks.
There are around 40 Unix Servers. It is really cumbersome to run those command on several servers.
can some help me in this regard. Is it possible to run... (6 Replies)
Hello,
I am a Unix newbie and I need a script in which I can run a command on multiple servers at work. The command is to start a storage process and I am sick of doing it manually on all servers..
Here's the command:
/opt/bss/bin/snmptable -CB -v2c -c P67LzuBm hostname hrStorageTable... (4 Replies)
Hello Everyone,
How do we run vi/vim encrypted shell script without decryption on multiple servers. It is a simple bash script and vim -nx <filename> has been used to encrypt with desired password. Now I have few errors, the syntax is absolutely fine as I have run that script multiple times on... (0 Replies)
Hi all,
I have a task for which I need to run some commands on one server1 and then jump from the server1 (using ssh and asking user to enter login credentials manually for server2 server) to server2 and run some commands there and exit.
I know the script I need here but problem is when I... (5 Replies)
Hi,
I have a problem runnig from script two diferents process in background mod. Is there a limitation to do this?
For example
echo "Running process one:"
./ProcessOne &
echo "Running process two:"
./ProcessTwo &
echo "The process are runnig. Bye"
The problem is that the... (7 Replies)
I need run a command such as ps -ef |grep xxx on a batch of servers, how to write a script to run it without password? don't need go in each server to check?
Thanks (7 Replies)
I need to run a script on a bunch of remote servers. how can this be done without ssh into each individual server and run it
its under /sbin/script.sh on each server (1 Reply)
We have 15 servers. Hostnames for these 15 servers are stored in a text files and loop through each server to connect to the remote server and run a command, but this loop process runs the command one after another. However, the requirement is to run the same command on all 15 servers at the same... (10 Replies)
Discussion started by: laknar
10 Replies
LEARN ABOUT REDHAT
passmass
PASSMASS(1) General Commands Manual PASSMASS(1)NAME
passmass - change password on multiple machines
SYNOPSIS
passmass [ host1 host2 host3 ... ]
INTRODUCTION
Passmass changes a password on multiple machines. If you have accounts on several machines that do not share password databases, Passmass
can help you keep them all in sync. This, in turn, will make it easier to change them more frequently.
When Passmass runs, it asks you for the old and new passwords. (If you are changing root passwords and have equivalencing, the old pass-
word is not used and may be omitted.)
Passmass understands the "usual" conventions. Additional arguments may be used for tuning. They affect all hosts which follow until
another argument overrides it. For example, if you are known as "libes" on host1 and host2, but "don" on host3, you would say:
passmass host1 host2 -user don host3
Arguments are:
-user
User whose password will be changed. By default, the current user is used.
-rlogin
Use rlogin to access host. (default)
-slogin
Use slogin to access host.
-telnet
Use telnet to access host.
-program
Next argument is a program to run to set the password. Default is "passwd". Other common choices are "yppasswd" and "set
passwd" (e.g., VMS hosts). A program name such as "password fred" can be used to create entries for new accounts (when run as
root).
-prompt
Next argument is a prompt suffix pattern. This allows the script to know when the shell is prompting. The default is "# " for
root and "% " for non-root accounts.
-timeout
Next argument is the number of seconds to wait for responses. Default is 30 but some systems can be much slower logging in.
-su
Next argument is 1 or 0. If 1, you are additionally prompted for a root password which is used to su after logging in. root's
password is changed rather than the user's. This is useful for hosts which do not allow root to log in.
HOW TO USE
The best way to run Passmass is to put the command in a one-line shell script or alias. Whenever you get a new account on a new machine,
add the appropriate arguments to the command. Then run it whenever you want to change your passwords on all the hosts.
CAVEATS
Using the same password on multiple hosts carries risks. In particular, if the password can be stolen, then all of your accounts are at
risk. Thus, you should not use Passmass in situations where your password is visible, such as across a network which hackers are known to
eavesdrop.
On the other hand, if you have enough accounts with different passwords, you may end up writing them down somewhere - and that can be a
security problem. Funny story: my college roommate had an 11"x13" piece of paper on which he had listed accounts and passwords all across
the Internet. This was several years worth of careful work and he carried it with him everywhere he went. Well one day, he forgot to
remove it from his jeans, and we found a perfectly blank sheet of paper when we took out the wash the following day!
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
7 October 1993 PASSMASS(1)
07-21-2009
If you need any parts of my example explained please don't hesitate to ask)