openstack/zun
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c237396495
zun/doc/source/admin/clear-containers.rst
Hongbin Lu 988345515a Revert "Consolidate admin guide and configuration guide" 
This reverts commit a869abf951.

Actually, we need to have both admin guide and configuration
guide because openstack manual will link to these two guides
respectively.

Change-Id: I1dc4ae9b0258afdc14efdce5664ffb0c7984124d
2018-03-28 03:00:41 +00:00

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Clear Containers in Zun

Zun now supports running Clear Containers with regular Docker containers. Clear containers run containers as very lightweight virtual machines which boot up really fast and has low memory footprints. It provides security to the containers with an isolated environment. You can read more about Clear Containers here.

Installation with DevStack

It is possible to run Clear Containers with Zun. Follow the /contributor/quickstart to download DevStack, Zun code and copy the local.conf file. Now perform the following steps to install Clear Containers with DevStack:

cd /opt/stack/devstack
echo "ENABLE_CLEAR_CONTAINER=true" >> local.conf
./stack.sh

Verify the installation by:

$ sudo docker info | grep Runtimes
Runtimes: cor runc

Using Clear Containers with Zun

To create Clear Containers with Zun, specify the --runtime option:

zun run --name clear-container --runtime cor cirros ping -c 4 8.8.8.8

Note

Clear Containers support in Zun is not production ready. It is recommended not to running Clear Containers and runc containers on the same host.