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Packet ring buffer: Difference between revisions
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The cluster ring buffer feature allows to use multiple whole disks in parallel for a single packet ring buffer. | The cluster ring buffer feature allows to use multiple whole disks in parallel for a single packet ring buffer. | ||
It also allows to optionally write redundant copies of packets to multiple disks to provide fault tolerance in case of a disk failure. | It also allows to optionally write redundant copies of packets to multiple disks to provide fault tolerance in case of a disk failure. | ||
It is also possible to create multiple cluster packet ring buffers that | |||
run in parallel. To enable multiple cluster packet ring buffers the | |||
option `The maximum number of concurrent packet ring buffers` in the | |||
capture module options can be set to the required number. | |||
When clicking the '''Create cluster ring buffer''' button an empty cluster ring buffer will be created and the '''Cluster configuration''' tab on the now visible packet ring buffer statistics page becomes available. | When clicking the '''Create cluster ring buffer''' button an empty cluster ring buffer will be created and the '''Cluster configuration''' tab on the now visible packet ring buffer statistics page becomes available. | ||
If multiple cluster packet ring buffers are used the page will show | |||
a number of buttons at the top to switch between the different clusters. | |||
Each cluster has it's own statistics and configuration. | |||
In the Cluster configuration tab you can configure the '''Write redundancy level''' at the very top. | In the Cluster configuration tab you can configure the '''Write redundancy level''' at the very top. | ||
This level controls how many redundant copies of each packet are written. | This level controls how many redundant copies of each packet are written. | ||
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* Disk: A description of the disk and its capacity. | * Disk: A description of the disk and its capacity. | ||
* Enclosure: If the disk is part of a multi-disk enclosure this column will show the enclosure number along with the slot number. | * Enclosure: If the disk is part of a multi-disk enclosure this column will show the enclosure number along with the slot number. | ||
* Status: If the disk has been added to the cluster this column will display the current status as '''ok''' or '''failed'''. | * Status: If the disk has been added to the cluster this column will display the current status as '''ok''' or '''failed'''. If multiple cluster packet ring buffers are used this will also show if the disk is active in another cluster. | ||
* Locator: For disks in a multi-disk enclosure the button displayed in this column allows to turn the slot locator LED on and off. | * Locator: For disks in a multi-disk enclosure the button displayed in this column allows to turn the slot locator LED on and off. | ||