Currently, Controllers and CMSes that integrate with Open vSwitch after following the IntegrationGuide.md, expect to start VMs after the underlying network infrastructure is ready. I have been asked a few times on how to handle the same with containers. This commit provides documentation on one way to achieve it.
Signed-off-by: Gurucharan Shetty <gshe...@nicira.com> --- INSTALL.Docker.md | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/INSTALL.Docker.md b/INSTALL.Docker.md index ddbef99..0086a60 100644 --- a/INSTALL.Docker.md +++ b/INSTALL.Docker.md @@ -76,8 +76,22 @@ and del-port[s] commands. Once a container interface is added to an Open vSwitch bridge, one can set VLANs, create Tunnels, add OpenFlow rules etc for more network control. +Many times, it is important that the underlying network infrastructure is +plumbed (or programmed) before the application inside the container starts. +To handle this, one can create a micro-container, attach an Open vSwitch +interface to that container, set the UUIDS in OVSDB as mentioned in +[IntegrationGuide.md] and then program the bridge to handle traffic coming out +of that container. Now, you can start the main container asking it +to share the network of the micro-container. When your application starts, +the underlying network infrastructure would be ready. e.g.: + +``` +% docker run -d --net=container:$MICROCONTAINER_ID ubuntu:14.04 /bin/sh -c \ +"while true; do echo hello world; sleep 1; done" +``` + Please read the man pages of ovs-vsctl, ovs-ofctl, ovs-vswitchd, -ovsdb-server ovs-vswitchd.conf.db etc for more details. +ovsdb-server and ovs-vswitchd.conf.db etc for more details about Open vSwitch. Docker networking is quite flexible and can be used in multiple ways. For more information, please read: @@ -89,3 +103,4 @@ Bug Reporting Please report problems to b...@openvswitch.org. [INSTALL.md]:INSTALL.md +[IntegrationGuide.md]:IntegrationGuide.md -- 1.9.1 _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
