User guide

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6.2.1 Save
On the main management console, clicking on the Save button will cause the WebMux to
save its configuration. Changes made to the “Farm” and “Server” will take effect
immediately without saving. However, changes are not saved permanently to the solid state
storage until the “Save” button is clicked. Unsaved farm/server settings will be lost during
power outage or WebMux reboot.
6.2.2 Pause/ Resume
The status screen automatically refreshes frequently to provide most up to date status. You
can use the Pause button to freeze the auto refresh.
After clicking the Pause button, the button will change to Resume and the auto refresh will
stop. Click the Resume button to restart the auto refresh.
6.2.3 Adjusting Timeout for Each Service
Clicking on the service type (under the service column) for the farm or clicking on the
“modify health check” button on the left of the main screen will allow you to change the
timeout value of layer 7 protocol healthcheck for each different service. Please note this
change is global and will affect all the farms using the same type of service. For example, the
default timeout to check the HTTP protocol is 5 seconds. If the web server does not respond
to the WebMux protocol chat within 5 seconds, the WebMux will declare that server is dead
and switch that server out from service and notify the operator through email or pager.
Note WebMux will declare a server dead only if it fails the health check 3 consecutive
times.
If your web server is not really dead but for some reason is not responding to the checking
request within the given timeout, the WebMux will false alarm. To avoid this, the user can
change the timeout value to a larger value. Many times, servers cannot resolve the IP address
of WebMux server LAN interface and could cause the server to not respond to the WebMux’s
protocol checking. Adding the WebMux server LAN IP address and server LAN gateway
address to the name resolution table will help resolve this problem. Please read the Q&A
section for more information.