Configure Garbage Collector

This section describes how to configure the Environment Garbage Collector (GC). The Garbage Collector lets the system discard nodes, assets, and links that are no longer useful, thus saving system resources.

Clean up old ghost nodes


Product	Guardian
Syntax	`conf.user configure vi gc old_ghost_nodes <seconds>`
Description	Set the threshold after which idle nodes that are also not confirmed and not learned are discarded by the garbage collector. NOTE: in Adaptive Learning, the GC works also if nodes are learned, since they all are.
Parameters	`seconds`: Number of seconds after which cleanup occurs (the default is 3600, the equivalent of one hour).
Where	CLI
To apply	It is applied automatically

Clean up old public nodes


Product	Guardian
Syntax	`conf.user configure vi gc old_public_nodes <seconds>`
Description	Determines how long to keep public nodes that are inactive. Expressed in seconds.
Parameters	`seconds`: Number of seconds after which cleanup occurs (default is 259200, the equivalent of three days).
Where	CLI
To apply	It is applied automatically

Clean up old inactive nodes


Product	Guardian
Syntax	`conf.user configure vi gc old_inactive_nodes <seconds>`
Description	Determines how long to keep nodes that are inactive. Expressed in seconds. Inactivity is calculated as the difference between the current time and the last activity time. Note: When a node that has been deleted by the garbage collector appears again in the network it will be considered new, as a consequence, according to the learning mode, an alert could be raised. For a better result, use Adaptive Learning and choose a reasonably long interval for this setting.
Parameters	`seconds`: Number of seconds after which cleanup occurs (by default it's disabled).
Where	CLI
To apply	It is applied automatically

Clean up old inactive links


Product	Guardian
Syntax	`conf.user configure vi gc old_inactive_links <seconds>`
Description	Determines how long to keep links that are inactive. Expressed in seconds. Inactivity is calculated as the difference between the current time and the last activity time. Note: When a link that has been deleted by the garbage collector appears again in the network it will be considered new, as a consequence, according to the learning mode, an alert could be raised. For a better result, use Adaptive Learning and choose a reasonably long interval for this setting.
Parameters	`seconds`: Number of seconds after which cleanup occurs (by default it's disabled).
Where	CLI
To apply	It is applied automatically

Clean up old ghost links


Product	Guardian
Syntax	`conf.user configure vi gc old_ghost_links <seconds>`
Description	Determines how long to wait before removing inactive ghost links. A ghost link is one that has not shown any application payload since its creation. This could be a connection attempt whose endpoint is not responding on the specified port; or it could be a link with a successful handshake but without application data transmitted (in this case, transferred data would still be greater than 0).
Parameters	`seconds`: Number of seconds after which cleanup occurs (by default it's disabled).
Where	CLI
To apply	It is applied automatically

Clean up old inactive variables


Product	Guardian
Syntax	`conf.user configure vi gc old_inactive_variables <seconds>`
Description	Determines how long to keep variables that are inactive. Expressed in seconds. Inactivity is calculated as the difference between the current time and the last activity time. Note: When a variable that has been deleted by the garbage collector appears again in the network it will be considered new, as a consequence, according to the learning mode, an alert could be raised. For a better result, use Adaptive Learning and choose a reasonably long interval for this setting.
Parameters	`seconds`: Number of seconds after which cleanup occurs (by default it's disabled).
Where	CLI
To apply	It is applied automatically

Clean up old sessions


Product	Guardian
Syntax	`conf.user configure vi gc sessions_may_expire_after <seconds>`
Description	Determines how long to wait before a session is considered stale and it's resources may be collected. Expressed in seconds.
Parameters	`seconds`: Number of seconds after which clean up may occur. By default, set to 100 seconds.
Where	CLI
To apply	It is applied automatically

Clean up old nodes that have private MAC addresses


Product	Guardian
Syntax	`conf.user configure vi gc nodes_with_private_mac <seconds>`
Description	Determines how long to keep inactive nodes that have private media access control (MAC) addresses, expressed in seconds.
Parameters	`<seconds>`: Number of seconds after which clean up occurs (by default it's disabled).
Where	CLI
To apply	It is applied automatically

Preserve nodes with imported fields and manual edits


Product	Guardian
Syntax	`conf.user configure vi gc keep_imported_nodes <value>`
Description	Determines whether nodes having imported fields may be considered for deletion. By default they are not (so, explicitly, if a node has a field that was imported or manually edited, it won't be automatically garbage-collected).
Parameters	If `<value>` is `0`, the rule is de-activated. If `<value>` is `1`, the rule is activated (the default behavior).
Where	CLI
To apply	It is applied automatically.