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In order to push configurations and binaries, start, stop, restart and purge the Ubuntu 12.04 LTS cluster this small script gets used on the FIZ cluster. In order to make this work without having to input passwords all the time for the sudo and ssh calls on the cluster nodes, I distributed a public ssh key on the cluster nodes for ssh auth and allowed the fcrepo user to execute rm, cp, service calls without a password.
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