One of my recent projects was to initiate a server-wide shutdown should our UPS ever run low. I currently have Zenoss monitoring the health status of the UPS, including the remaining charge on the battery. Using Zenoss thresholds, I can make a script execute if the battery ever runs low.
Our Zenoss deployment currently runs on CentOS, so I put down a method to shut down each type of host from a linux platform. After much researching and testing, this is what I came up with (and am currently using in my shutdown script).
For Windows:
net rpc SHUTDOWN -C "Automated shutdown" -f -I "$server" -W $domain -U $username%$password |
I replaced my arguments with some that would be more readable. User and password are separated with %.
For Linux:
CMD="ssh -l $username $server shutdown -h now" expect -c " match_max 100000 spawn $CMD expect { \"Are you sure you want to continue connecting (yes/no)?\" { send \"yes\r\" exp_continue } \"password:\" { send \"$password\r\" expect -re \"$username*\" } } " |
I wanted to shutdown linux servers without using keys but had to overcome the “do you want to connect” prompt. In order to do that I had to use exact which can be installed with “yum install exact”
By turning these into functions and passing arguments, you can make a shutdown script in a couple of minutes.
