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43 lines
2.2 KiB
Plaintext
43 lines
2.2 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * microshift_networking/microshift-cni.adoc
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:_mod-docs-content-type: CONCEPT
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[id="microshift-nw-components-svcs_{context}"]
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= {microshift-short} networking components and services
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[role="_abstract"]
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Understand networking components and services and their operation in {microshift-short}.
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[NOTE]
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====
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The `microshift-networking` RPM is a package that automatically pulls in any networking-related dependencies and systemd services to initialize networking, for example, the `microshift-ovs-init` systemd service.
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====
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NetworkManager::
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NetworkManager is required to set up the initial gateway bridge on the {microshift-short} node. The NetworkManager and `NetworkManager-ovs` RPM packages are installed as dependencies to the `microshift-networking` RPM package, which contains the necessary configuration files. NetworkManager in {microshift-short} uses the `keyfile` plugin and is restarted after installation of the `microshift-networking` RPM package.
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microshift-ovs-init::
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The `microshift-ovs-init.service` is installed by the `microshift-networking` RPM package as a dependent systemd service to `microshift.service`. It is responsible for setting up the OVS gateway bridge.
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OVN containers::
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Two OVN-Kubernetes daemon sets are rendered and applied by {microshift-short}.
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* *ovnkube-master*
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Includes the `northd`, `nbdb`, `sbdb` and `ovnkube-master` containers.
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* *ovnkube-node*
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The ovnkube-node includes the OVN-Controller container.
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+
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After {microshift-short} starts, the OVN-Kubernetes daemon sets are deployed in the `openshift-ovn-kubernetes` namespace.
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Packaging::
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OVN-Kubernetes manifests and startup logic are built into {microshift-short}. The systemd services and configurations included in the `microshift-networking` RPM are:
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* `/etc/NetworkManager/conf.d/microshift-nm.conf` for `NetworkManager.service`
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* `/etc/systemd/system/ovs-vswitchd.service.d/microshift-cpuaffinity.conf` for `ovs-vswitchd.service`
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* `/etc/systemd/system/ovsdb-server.service.d/microshift-cpuaffinity.conf` for `ovs-server.service`
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* `/usr/bin/configure-ovs-microshift.sh` for `microshift-ovs-init.service`
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* `/usr/bin/configure-ovs.sh` for `microshift-ovs-init.service`
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* `/etc/crio/crio.conf.d/microshift-ovn.conf` for the CRI-O service
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