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Language:
English
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Language:
English
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Chapter 5. Logical Networks
5.1. Introduction to Logical Networks
A logical network is a named set of global network connectivity properties in your system. When a logical network is added to a host, it may be further configured with host-specific network parameters. Logical networks optimize network flow by grouping network traffic by usage, type, and requirements.
Logical networks allow both connectivity and segregation. You can create a logical network for gluster storage communication to optimize network traffic between hosts and gluster bricks, a logical network specifically for all network traffic, or multiple logical networks to carry the traffic of groups of networks.
The default logical network is the management network called
ovirtmgmt
. The ovirtmgmt
network carries all traffic, until another logical network is created. It is meant especially for management communication between the Red Hat Gluster Storage Console and hosts.
When a host has multiple interfaces, user can choose the interface to be used while adding the brick, by tagging one of the host's interface with the Gluster Network role. A logical network that has been designated as Required must be configured in all of a cluster's hosts before it is operational. Optional networks can be used by any host they have been added to.
Figure 5.1. Logical Network architecture
Warning
Do not change networking in a cluster if any hosts are running as this risks making the host unreachable.