第 1 章 About the OVN-Kubernetes network plugin
You can use the OVN-Kubernetes Network Interface to create and manage network connections for internet-connected nodes.
1.1. MicroShift default networking plugin
复制链接链接已复制到粘贴板!
The OVN-Kubernetes Container Network Interface (CNI) plugin is the default networking solution for a MicroShift node. OVN-Kubernetes is a virtualized network for pods and services that is based on Open Virtual Network (OVN).
- Changing the CNI is not supported on MicroShift.
-
Default network configuration and connections are applied automatically in MicroShift with the
microshift-networkingRPM during installation. - A node that uses the OVN-Kubernetes network plugin also runs Open vSwitch (OVS) on the node.
- OVN-K configures OVS on the node to implement the declared network configuration.
-
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).
Using configuration files or custom scripts, you can configure the following networking settings:
- You can use subnet CIDR ranges to allocate IP addresses to pods.
- You can change the maximum transmission unit (MTU) value.
- You can configure firewall ingress and egress.
- You can define network policies in the MicroShift, including ingress and egress rules.
- You can use the MicroShift Multus plugin to chain other CNI plugins.
- You can configure or remove the ingress router.
'%20d='M201.5%20305.5c-13.8%200-24.9-11.1-24.9-24.6%200-13.8%2011.1-24.9%2024.9-24.9%2013.6%200%2024.6%2011.1%2024.6%2024.9%200%2013.6-11.1%2024.6-24.6%2024.6zM504%20256c0%20137-111%20248-248%20248S8%20393%208%20256%20119%208%20256%208s248%20111%20248%20248zm-132.3-41.2c-9.4%200-17.7%203.9-23.8%2010-22.4-15.5-52.6-25.5-86.1-26.6l17.4-78.3%2055.4%2012.5c0%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.3%2024.9-24.9s-11.1-24.9-24.9-24.9c-9.7%200-18%205.8-22.1%2013.8l-61.2-13.6c-3-.8-6.1%201.4-6.9%204.4l-19.1%2086.4c-33.2%201.4-63.1%2011.3-85.5%2026.8-6.1-6.4-14.7-10.2-24.1-10.2-34.9%200-46.3%2046.9-14.4%2062.8-1.1%205-1.7%2010.2-1.7%2015.5%200%2052.6%2059.2%2095.2%20132%2095.2%2073.1%200%20132.3-42.6%20132.3-95.2%200-5.3-.6-10.8-1.9-15.8%2031.3-16%2019.8-62.5-14.9-62.5zM302.8%20331c-18.2%2018.2-76.1%2017.9-93.6%200-2.2-2.2-6.1-2.2-8.3%200-2.5%202.5-2.5%206.4%200%208.6%2022.8%2022.8%2087.3%2022.8%20110.2%200%202.5-2.2%202.5-6.1%200-8.6-2.2-2.2-6.1-2.2-8.3%200zm7.7-75c-13.6%200-24.6%2011.1-24.6%2024.9%200%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.1%2024.9-24.6%200-13.8-11-24.9-24.9-24.9z'/%3e%3c/svg%3e){kind=small}