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I just was recommended by a friend a nifty tool, which is absoutely nifty for system administrators.
The tool is called sshsudo and the project is hosted on http://code.google.com/p/sshsudo/.
Let’s say you’re responsible for 10 servers with the same operating system let’s say; CentOS 4 and you want to install tcpdump and vnstat on all of them without logging one by one to each of the nodes.
This task is really simple with using sshsudo.
A typical use of sshsudo is:
[root@centos root]# sshsudo -u root \
comp1,comp2,comp3,comp4,comp5,comp6,comp7,comp8,comp9,comp10 yum install tcpdump vnstat
Consequently a password prompt will appear on the screen;
Please enter your password:
If all the servers are configured to have the same administrator root password then just typing one the root password will be enough and the command will get issued on all the servers.
The program can also be used to run a custom admin script by automatically populating the script (upload the script), to all the servers and issuing it next on.
One typical use to run a custom bash shell script on ten servers would be:
[root@centos root]# sshsudo -r -u root \
I’m glad I found this handy tool 😉