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docs: Remove Zun documentation with kata containers

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This PR removes the zun documentation use case with kata containers mainly
because is not longer valid as it is using as a reference docker with
clear containers 2.0 which are not longer being supported and it is also
using docker to test kata with openstack zun and docker is also not supported.

Fixes #3581

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>
This commit is contained in:
Gabriela Cervantes 2022-02-01 16:29:06 +00:00
parent a31cde1224
commit 5861e52f8d
2 changed files with 0 additions and 122 deletions
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docs/README.md
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@ -28,7 +28,6 @@ See the [howto documentation](how-to).
## Kata Use-Cases ## Kata Use-Cases
* [GPU Passthrough with Kata](./use-cases/GPU-passthrough-and-Kata.md) * [GPU Passthrough with Kata](./use-cases/GPU-passthrough-and-Kata.md)
* [OpenStack Zun with Kata Containers](./use-cases/zun_kata.md)
* [SR-IOV with Kata](./use-cases/using-SRIOV-and-kata.md) * [SR-IOV with Kata](./use-cases/using-SRIOV-and-kata.md)
* [Intel QAT with Kata](./use-cases/using-Intel-QAT-and-kata.md) * [Intel QAT with Kata](./use-cases/using-Intel-QAT-and-kata.md)
* [VPP with Kata](./use-cases/using-vpp-and-kata.md) * [VPP with Kata](./use-cases/using-vpp-and-kata.md)

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docs/use-cases/zun_kata.md
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# OpenStack Zun DevStack working with Kata Containers
## Introduction
This guide describes how to get Kata Containers to work with OpenStack Zun
using DevStack on Ubuntu 16.04. Running DevStack with this guide will setup
Docker and Clear Containers 2.0, which you replace with Kata Containers.
Currently, the instructions are based on the following links:
- https://docs.openstack.org/zun/latest/contributor/quickstart.html
- https://docs.openstack.org/zun/latest/admin/clear-containers.html
## Install Git to use with DevStack
```sh
$ sudo apt install git
```
## Setup OpenStack DevStack
The following commands will sync DevStack from GitHub, create your
`local.conf` file, assign your host IP to this file, enable Clear
Containers, start DevStack, and set the environment variables to use
`zun` on the command line.
```sh
$ sudo mkdir -p /opt/stack
$ sudo chown $USER /opt/stack
$ git clone https://github.com/openstack-dev/devstack /opt/stack/devstack
$ HOST_IP="$(ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/')"
$ git clone https://github.com/openstack/zun /opt/stack/zun
$ cat /opt/stack/zun/devstack/local.conf.sample \
$ | sed "s/HOST_IP=.*/HOST_IP=$HOST_IP/" \
$ > /opt/stack/devstack/local.conf
$ sed -i "s/KURYR_CAPABILITY_SCOPE=.*/KURYR_CAPABILITY_SCOPE=local/" /opt/stack/devstack/local.conf
$ echo "ENABLE_CLEAR_CONTAINER=true" >> /opt/stack/devstack/local.conf
$ echo "enable_plugin zun-ui https://git.openstack.org/openstack/zun-ui" >> /opt/stack/devstack/local.conf
$ /opt/stack/devstack/stack.sh
$ source /opt/stack/devstack/openrc admin admin
```
The previous commands start OpenStack DevStack with Zun support. You can test
it using `runc` as shown by the following commands to make sure everything
installed correctly and is working.
```sh
$ zun run --name test cirros ping -c 4 8.8.8.8
$ zun list
$ zun logs test
$ zun delete test
```
## Install Kata Containers
Follow [these instructions](../install/README.md)
to install the Kata Containers components.
## Update Docker with new Kata Containers runtime
The following commands replace the Clear Containers 2.x runtime setup with
DevStack, with Kata Containers:
```sh
$ sudo sed -i 's/"cor"/"kata-runtime"/' /etc/docker/daemon.json
$ sudo sed -i 's/"\/usr\/bin\/cc-oci-runtime"/"\/usr\/bin\/kata-runtime"/' /etc/docker/daemon.json
$ sudo systemctl daemon-reload
$ sudo systemctl restart docker
```
## Test that everything works in both Docker and OpenStack Zun
```sh
$ sudo docker run -ti --runtime kata-runtime busybox sh
$ zun run --name kata --runtime kata-runtime cirros ping -c 4 8.8.8.8
$ zun list
$ zun logs kata
$ zun delete kata
```
## Stop DevStack and clean up system (Optional)
```sh
$ /opt/stack/devstack/unstack.sh
$ /opt/stack/devstack/clean.sh
```
## Restart DevStack and reset CC 2.x runtime to `kata-runtime`
Run the following commands if you already setup Kata Containers and want to
restart DevStack:
```sh
$ /opt/stack/devstack/unstack.sh
$ /opt/stack/devstack/clean.sh
$ /opt/stack/devstack/stack.sh
$ source /opt/stack/devstack/openrc admin admin
$ sudo sed -i 's/"cor"/"kata-runtime"/' /etc/docker/daemon.json
$ sudo sed -i 's/"\/usr\/bin\/cc-oci-runtime"/"\/usr\/bin\/kata-runtime"/' /etc/docker/daemon.json
$ sudo systemctl daemon-reload
$ sudo systemctl restart docker
```
![Kata Zun image 1](./images/kata-zun1.png)
Figure 1: Create a BusyBox container image
![Kata Zun image 2](./images/kata-zun2.png)
Figure 2: Select `kata-runtime` to use
![Kata Zun image 3](./images/kata-zun3.png)
Figure 3: Two BusyBox containers successfully launched
![Kata Zun image 4](./images/kata-zun4.png)
Figure 4: Test connectivity between Kata Containers
![Kata Zun image 5](./images/kata-zun5.png)
Figure 5: CLI for Zun