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When using multiple Data Collectors, there are the Settings for Communicating between Data Collectors
Changing Permission Model Warning
The TCP Port used for communicating with the Remote Data Collectors. The protocol will match the Central Cacti web server (either HTTP or HTTPS). Leave blank to use the default ports.
Changing Permission Model will alter a users effective Graph permissions.
Force Serial Automation Scans
After you change the Graph Permission Model you should audit your Users and User Groups Effective Graph permission to ensure that you still have adequate control of your Graphs. NOTE: If you want to restrict all Graphs at the Device or Graph Template Graph Permission Model, the default Graph Policy should be set to 'Deny'.
When enabled, Cacti Automation will scan one network at a time not in Parallel. This setting can be useful when your Cacti Web Servers have limited cores for performing Automation checks.
. This is limited by the php setting 'max_input_vars', currently:
The number of milliseconds to wait before initiating a call to the server for autocomplete. Any value less than 500 will assume 500ms
Refresh Poller Table Per Cycle
Facilities Related
This setting is for a single poller systems only to rebuild the poller output table on each polling cycle to prevent the memory table from swapping on very large systems with large databases that could use swap.