Sun Management Center Change Manager 1.0.1 Administration Guide

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## How to Reinstall, Update, Fall Back, and Reboot Managed Hosts (Web Browser)

1. If you are not already in the appropriate host group, see How to Access the Set Up Hosts & Jobs Section and Appropriate Administrative Domain and Host Group (Web Browser).

2. Perform one of the following actions:

   - To perform a reinstallation, choose Reinstall from the Host Actions menu.

   - To perform an update, choose Update from the Host Actions menu.

     Note –

     First use Change Manager to perform an initial installation before using the Solaris Live Upgrade feature on a managed host. The initial installation creates two boot environments by using the `lucreate` command.

     Modify the shared profiles and host properties to reflect the configuration of the managed hosts.

   - To fall back to the previous version of the software stack, choose Fall Back from the Host Actions menu.

     The fallback operation “undoes” the last update attempt of a managed host, whether it finished or did not start.

     For example, three managed hosts are updated one host at a time. The update operation completes on the first managed host. Then, the update begins on the second managed host. When the first managed host boots the updated boot environment, you notice that there are problems with the system. You cancel the running update.

     Each of the three managed hosts are in a different state. The first managed host completed the update. The second managed host started the update, but did not complete it. The third managed host did not start the update.

     The fallback operation ensures that each of these managed hosts reverts to the boot environment running prior to the update attempt.

     The fallback feature fails if the system cannot boot. In such cases, see “Solaris Live Upgrade (Overview)” in Solaris 9 Installation Guide.

   - To reboot managed hosts, choose Reboot from the Host Actions menu.

3. Supply a meaningful job name.

   For example, the job name might be `Update host1 and host2`.

4. Determine when you want to run the job, either now or at another time.

   - To initiate the job immediately, click the Start Now radio button.

   - To run the job at a later time, specify the start date and start time.

     - Start date. Click the date or specify the date in the mm/dd/yyyy format.

       mm and dd are two-digit forms for the month and day. yyyy is the four-digit form for the year.

     - Start time. Choose the start time from the hour and minute pull-down menus.

5. Click Submit to initiate the action.

   Click Cancel to return to the previous page.

- Previous: How to Perform an Initial Installation (Web Browser)
- Next: Installing Solaris Flash Archives on Managed Hosts by Using the Command-Line Interface (Task Map)

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