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Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

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Chapter 17: High Availability<br />

Managing an HA cluster<br />

• If you want the s<strong>of</strong>t shutdown process to begin immediately, use the<br />

following command (the <strong>Sidewinder</strong> <strong>G2</strong> must be shutdown or manually<br />

rebooted once the s<strong>of</strong>t shutdown process is complete):<br />

cf failover s<strong>of</strong>tshutdown<br />

• To configure s<strong>of</strong>t shutdown to occur for a specific amount <strong>of</strong> time, as<br />

follows:<br />

shutdown -s [s<strong>of</strong>t_shutdown_time] [shutdown_time]<br />

The s<strong>of</strong>t_shutdown_time specifies that amount <strong>of</strong> time that s<strong>of</strong>t shutdown<br />

will occur. The shutdown_time specifies the time at which the<br />

actual shutdown will occur. Each variable can be specified either as a number<br />

<strong>of</strong> minutes or as an exact date and time. If you are specifying the number<br />

<strong>of</strong> minutes, you must include a plus (+) sign in front <strong>of</strong> the minutes.<br />

For example, if you want the <strong>Sidewinder</strong> <strong>G2</strong> to shutdown on Saturday, June<br />

12, 2004 at 11:00 am with a 15 minute s<strong>of</strong>t shutdown period, you would<br />

enter the following command:<br />

shutdown -s +15 0406121100<br />

In this case, the s<strong>of</strong>t shutdown process would begin at 10:45 am, and the<br />

<strong>Sidewinder</strong> <strong>G2</strong> would shutdown at 11:00 am on the specified day.<br />

If you want the <strong>Sidewinder</strong> <strong>G2</strong> to begin the s<strong>of</strong>t shutdown at 6:00 am with<br />

an actual shutdown at 6:20 am, you would enter the following command:<br />

shutdown -s 0600 0620<br />

Note: For a complete listing <strong>of</strong> shutdown options, refer to the shutdown man<br />

page.<br />

You can cancel a scheduled shutdown at anytime prior to the final 30 minute<br />

period by entering the shutdown -c command. However, once the <strong>Sidewinder</strong><br />

<strong>G2</strong> has entered s<strong>of</strong>t shutdown mode, this command will no longer cancel the<br />

s<strong>of</strong>t shutdown process. When the s<strong>of</strong>t shutdown process is complete, you will<br />

need to reboot the <strong>Sidewinder</strong> <strong>G2</strong> before it will properly function as part <strong>of</strong> the<br />

HA cluster.<br />

Connecting directly to a secondary/standby<br />

When you have an HA cluster configured, most areas for each <strong>Sidewinder</strong> <strong>G2</strong><br />

are managed by connecting to the HA cluster address. However, if your<br />

<strong>Sidewinder</strong> <strong>G2</strong>s are configured for secure split SMTP mail and/or hosted DNS,<br />

you will need to connect directly to the secondary/standby to manage those<br />

areas. (You can still manage the primary for these areas by connecting to the<br />

HA cluster.)<br />

To connect directly to a <strong>Sidewinder</strong> <strong>G2</strong> that is part <strong>of</strong> an HA cluster, do the<br />

following:<br />

511

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