Solution to inject script to multiple servers??

cdestiny · 07-23-2008, 01:19 AM

Hi,

I am currently taking care for about 100+ CentOS servers and i am having headache everytime when i tried to apply changes to the servers.

I have tried to use ssh public key in a host server and ssh to the rest server and apply the changes(run script).

Is there anyway for me to actually inject the script to the pool of servers?

You help is much appreciated.

Thank you.

Mr. C. · 07-23-2008, 01:35 AM

Maybe you can describe the problem(s) you have SSHing via key ?

You can run a script on a remote host:

ssh user@remotehost 'sh -c my shell script here'

cdestiny · 07-23-2008, 04:37 AM

There is no issue with the ssh public key just that it is too many to apply to if i want to use ssh public key.
I am wondering if there is another alternative to this case.

Mr. C. · 07-23-2008, 01:14 PM

There are essentially three existing mechanisms to remotely connect interactively to a system:

1) ssh
2) rsh
3) telnet

They are listed in decreasing order of security. Another solution would be to roll your own, but that is *far* more work than getting keys distributed.

You can copy files remotely using:

1) scp
2) rsync
3) rcp
4) ftp
5) tftp

But no matter what your choice, you still have to create the initial configuration on each remote server that grants access to your control server.