4.0 System shutdown

Once the system is running, Legion can be safely shut down and restarted without a loss of state. Creators of user object classes can choose whether or not to maintain the state of their objects.

4.1 Shutting down an insecure system

Issue the legion_shutdown command from the bootstrap host:

$ legion_shutdown

It may take several minutes to shut down the system. Be patient, and do not try to quit the process with ^C. When completed, the entire system, with the notable exception of extra hosts and vaults that were started separately (see section 7.0 in the Basic User Manual), will be deactivated.

4.2 Shutting down a secure system

If you have enabled security, the shutdown process is complicated. If you are using a PCD host as your bootstrap, it is very complicated. There is no "root" user and each user owns his or her own objects. We suggest that you avoid trying to shut down a secure system with a PCD bootstrap host unless absolutely necessary. Please contact us at legion-help@virginia.edu if you have any questions about this.

If you have only one user (i.e., /users/admin) and are using a basic host object on your bootstrap host, run legion_shutdown while logged in. You will probably need to clean up after the system by hand (i.e., kill the processes one by one from the command line: you can use ps to check that all Legion processes have been killed).

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