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3.5. Rebooting the IRIS Host
The host computer usually runs 24 hours/day. If it is turned o, or if there is a power failure,
the system manger or an operator designed by the system manager must boot the system.
Most systems, and unattended systems, are
configured to reboot automatically when the
power is turned on. This can take several minutes to complete. If your system should reboot
automatically but does not, check the BIOS configuration.
Never switch o a running LINUX computer from the power switch.
1. If you are logged in as radarop or observer, logout.
2. Login as root.
3. Unmount tapes and
floppies, if necessary.
4. Shut the computer safely down by typing: # shutdown -h now
3.6. Shutting Down the IRIS Host
Shutting down IRIS host must be done as radarop. Typically, IRIS is stopped only for
maintenance reasons, such as before halting or rebooting the computer.
You can stop the IRIS Host remotely or locally using the IRISNet utility (See IRIS and RDA
Utilities Guide.
3.6.1. Shutting Down IRIS Host from the Operating System
1. In the operating system prompt, type:
CentOS7: qiris
RHEL6/CentOS6: sudo service iris stop
IRIS goes through a shutdown procedure to leave the radar and antenna in a safe, non-
operating state. IRIS clients are disconnected.
3.6.2. Shutting Down IRIS Host from IRISnet
1. Double-click the icon of a host computer.
2. Double-click the icon for quit IRIS, qiris (a red
trac light).
IRIS goes through a shutdown procedure to leave the radar and antenna in a safe, non-
operating state. IRIS clients are disconnected.
Chapter 3 – Starting and Stopping IRIS
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