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Merge pull request #296 from MCamp859/k8s-tut-edit

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Kubernetes tutorial: Added details in Install pod network add-on section
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michael vincerra
2018-11-01 17:58:18 -07:00
committed by GitHub
parent bee312a109 d2603e5aec
commit 35785b2f3d
1 changed files with 49 additions and 8 deletions
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source/clear-linux/tutorials/kubernetes.rst
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@@ -199,16 +199,57 @@ Install pod network add-on
**************************
You must choose and install a `pod network add-on`_ to allow your pods to
communicate.
communicate. Check whether or not your add-on requires special flags when you
initialize the master control plane.
Check whether or not your add-on requires special flags when you initialize
the master control plane. For example, if you choose the `flannel` add-on,
then you must add :command:`--pod-network-cidr 10.244.0.0/16` to the `kubeadm
init` command.
**Notes about flannel add-on**
Similarly, if you choose the `weave` add-on, then you must change the CNI
add-on directory parameter because the weave plugin installs itself in the
:file:`/opt/cni/bin` directory.
If you choose the `flannel` add-on, then you must add the following to the
`kubeadm init` command:
.. code-block:: bash
--pod-network-cidr 10.244.0.0/16
If you are using CRI-O and `flannel` and you want to use Kata Containers, edit
the :file:`/etc/crio/crio.conf` file to add:
.. code-block:: bash
[crio.runtime]
manage_network_ns_lifecycle = true
**Notes about Weave Net add-on**
If you choose the `Weave Net` add-on, then you must make the following changes
because it installs itself in the :file:`/opt/cni/bin` directory.
If you are using Docker and `Weave Net`, edit the :file:`kubeadm.conf` file to
add:
.. code-block:: bash
Environment="KUBELET_NETWORK_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
If you are using CRI-O and `Weave Net`, you must complete the following steps.
#. Edit the :file:`/etc/crio/crio.conf` file to change `plugin_dir` from:
.. code-block:: bash
plugin_dir = "/usr/libexec/cni/"
to:
.. code-block:: bash
plugin_dir = "/opt/cni/bin"
#. Add the `loopback` CNI plugin to the plugin path with the command:
.. code-block:: bash
sudo ln -s /usr/libexec/cni/loopback /opt/cni/bin/loopback
Use your cluster