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26 lines
1.6 KiB
Plaintext
26 lines
1.6 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * microshift_networking/microshift-cni.adoc.adoc
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:_mod-docs-content-type: CONCEPT
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[id="microshift-default-networking-plugin_{context}"]
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= {microshift-short} default networking plugin
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[role="_abstract"]
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The OVN-Kubernetes Container Network Interface (CNI) plugin is the default networking solution for a {microshift-short} node. OVN-Kubernetes is a virtualized network for pods and services that is based on Open Virtual Network (OVN).
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* Changing the CNI is not supported on {microshift-short}.
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* Default network configuration and connections are applied automatically in {microshift-short} with the `microshift-networking` RPM during installation.
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* A node that uses the OVN-Kubernetes network plugin also runs Open vSwitch (OVS) on the node.
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* OVN-K configures OVS on the node to implement the declared network configuration.
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* Host physical interfaces are not bound by default to the OVN-K gateway bridge, `br-ex`. You can use standard tools on the host for managing the default gateway, such as the Network Manager CLI (`nmcli`).
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Using configuration files or custom scripts, you can configure the following networking settings:
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* You can use subnet CIDR ranges to allocate IP addresses to pods.
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* You can change the maximum transmission unit (MTU) value.
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* You can configure firewall ingress and egress.
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* You can define network policies in the {microshift-short}, including ingress and egress rules.
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* You can use the {microshift-short} Multus plugin to chain other CNI plugins.
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* You can configure or remove the ingress router.
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