Installation guide

50
Wi-Fi Location-Based Services—Design and Deployment Considerations
OL-11612-01
Installation and Configuration
providing the local time of the NOC, or simply the Coordinated Universal Time (UTC). By properly
configuring the NTPD daemon on each location server, all notification messages appearing at configured
destinations should arrive with a consistent time stamp.
Complete guidance on configuring and activating the NTPD daemon on the location appliance can be
found in Release Notes for Cisco Wireless Location Appliance at the following URL:
http://www.cisco.com/en/US/products/ps6386/prod_release_note09186a00806b5ec7.html.
Quiescing the Location Appliance
Although the location appliance is designed to be installed and run in continuous service, there may be
times when it is necessary to power-down the appliance in preparation for extraordinary events such as
a physical equipment move or data center power-down. Powering down the location appliance without
undergoing an orderly shutdown may result in any files open at the time becoming corrupted. Although
the location appliance operating system does use an ext3 journaling file system that minimizes the
possibility of file system corruption, it is generally regarded as a best practice to follow the procedure
outlined below to initiate an orderly shutdown of all appliance software facilities.
To perform a power-down of the location appliance, perform the following steps via either via the
appliance CLI console or a remote SSH device session.
Note For information on how to connect a CLI console to the location appliance, see “Connecting and Using
the CLI Console” in the Cisco Wireless Location Appliance: Installation Guide at the following URL:
http://www.cisco.com/en/US/products/ps6386/products_installation_and_configuration_guide_book09
186a00804fa761.html.
Step 1 Manually stop the location server software by issuing the follow command and observing the results
indicated:
# /etc/init.d/locserverd stop
Shutting down locserverd: Request server shutdown now...
Waiting for server...2 secs
Waiting for server...4 secs
.
.
.
.
Waiting for server...60 secs
Server shutdown complete.
#
Step 2 Before removing power to the location appliance, issue the following command to properly unmount all
file systems, stop all services, and initiate an orderly shutdown of the Linux operating system:
# shutdown -h now
Issuing this command from the CLI console device results in the following output:
Shutting down console mouse services: [ OK ]
Stopping sshd:[ OK ]
Stopping xinetd: [ OK ]
Stopping crond: [ OK ]
Saving random seed: [ OK ]
Killing mdmonitor: [ OK ]
Shutting down kernel logger: [ OK ]
Shutting down system logger: [ OK ]
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]