emergency shutdown best practices. Post: 302244746

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Top Forums UNIX for Advanced & Expert Users emergency shutdown best practices. Post 302244746 by avronius on Wednesday 8th of October 2008 02:16:42 PM

10-08-2008

Registered User

If you have more than 15 minutes to plan for "emergency shut down" of your servers, I'd recommend:

1. All applications that are running have corresponding startup and shutdown scripts in rc.*
2. Identify the order that your hosts should be shutdown in - NIS or LDAP should shutdown last, NFS servers second last... NTP would go first...
3. Write scripts.
You need to send a wall to all users connected informing them of an impending outage.
You need to ensure that you send the right shutdown options to the right OS types.
You need to create for each command that you are sending - for audit and CYA purposes later.
4. Inform your business/clients/users that these are the "emergency shutdown" procedures. Get them to sign-off and buy into them. If they have special requirements, amend your policy to include those.

Ensure that you have adequate time to shutdown storage devices that may have a great deal of data in cache. Ensure that you have adequate time to shutdown tape storage systems, as the robotics may need more time to get to "home" than you might expect.

There is no shortage of things that you could do, but this should get you started.

Last edited by avronius; 10-08-2008 at 03:17 PM.. Reason: Grammer

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LEARN ABOUT V7

shutdown

asadmin-shutdown(1AS)                                              User Commands                                             asadmin-shutdown(1AS)

NAME

       asadmin-shutdown, shutdown - brings down the administration server

SYNOPSIS

       shutdown [--user admin_user][--password admin_password][--host localhost] [--port 4848][--passwordfile filename][--secure|-s]

       shutdown  gracefully brings down the administration server and all the running instances. You must manually start the administration server
       to bring it up again.

OPTIONS

       --user                  administrative user associated for the instance.

       --password              administrative password corresponding to the administrative user.

       --host                  host name of the machine hosting the administrative instance.

       --port                  administrative port number associated with the administrative host.

       --passwordfile          file containing passwords appropriate for the command (e.g., administrative instance).

       --secure                if true, uses SSL/TLS to communicate with the administrative instance.

       Example 1: Using the shutdown command

       asadmin> shutdown --user admin --password adminadmin --host bluestar --port 4848
       Waiting for admin server to shutdown...
       Admin server has been shutdown

EXIT STATUS

       0                       command executed successfully

       1                       error in executing the command

INTERFACE EQUIVALENT

       Administration Server page

       asadmin-start-instance(1AS), asadmin-stop-instance(1AS), asadmin-restart-instance(1AS)asadmin-start-domain(1AS),  asadmin-stop-domain(1AS),
       asadmin-start-appserv(1AS), asadmin-stop-appserv(1AS)

J2EE 1.4 SDK                                                        March 2004                                               asadmin-shutdown(1AS)