openstack/zun
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cc9b8b3d2d
zun/doc/source/admin/keep-containers-alive.rst
Feng Shengqin c18ccbae4a Add doc for live restore to keep container alive 
Change-Id: I3c433f56e9a43940d9966f15baf044c23bd9d2e8
2018-04-24 05:59:11 +00:00

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Keep Containers Alive

As we know, the Docker daemon shuts down all running containers during daemon downtime. Starting with Docker Engine 1.12, users can configure the daemon so that containers remain running when the docker service becomes unavailable. This functionality is called live restore. You can read more about Live Restore here.

Installation with DevStack

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

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

Verify the installation by:

$ sudo docker info | grep "Live Restore"
Live Restore Enabled: true