Merge branch 'latest_release_doc_updates' into 1.0

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Matthias Radestock committed 2015-06-23 09:53:44 +01:00
commit 1b4f83c067
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@@ -9,7 +9,7 @@ Weave has a few more features beyond those illustrated by the [basic
example](https://github.com/weaveworks/weave#example):
* [Virtual ethernet switch](#virtual-ethernet-switch)
* [Manual addressing](#manual-addressing)
* [Address allocation](#addressing)
* [Application isolation](#application-isolation)
* [Dynamic network attachment](#dynamic-network-attachment)
* [Security](#security)
@@ -54,13 +54,25 @@ now re-use the same tools and techniques when deploying applications
as containers as we would have done when deploying them 'on metal' in
our data centre.
### <a name="manual-addressing"></a>Manual addressing
### <a name="addressing"></a>Address allocation
The examples so far have leveraged weave's [address allocation](ipam.html)
and [discovery](#dns) features, meaning that we've not had to concern
ourselves with IP addresses at all. It is, however, possible to
specify address and network explicitly using [CIDR
notation](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing#CIDR_notation)
Containers are automatically allocated an IP address that is unique
across the weave network. You can see which address was allocated with
[`weave ps`](troubleshooting.html#list-attached-containers):
host1$ weave ps a1
a7aee7233393 7a:44:d3:11:10:70 10.128.0.2/10
Weave detects when a container has exited and releases its
automatically allocated addresses so they can be re-used.
See the [Automatic IP Address Management](#ipam) documentation for
further details.
Instead of getting weave to allocate IP addresses automatically, it is
also possible to specify an address and network explicitly, expressed
in
[CIDR notation](http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing#CIDR_notation)
- let's see how the first example would have looked:
On $HOST1:
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@@ -5,10 +5,13 @@ layout: default
# Automatic IP Address Management
Weave can automatically assign containers an IP address that is unique
across the network.
Weave automatically assigns containers an IP address that is unique
across the network, and releases that address when a container
exits. This happens for all invocations of the `run`, `start`,
`attach`, `detach`, `expose`, `hide` and `launch-dns` commands, unless
the user explictly specified an address. Weave can also assign
addresses in multiple subnets.
* [Usage](#usage)
* [Initialisation](#initialisation)
* [Choosing an allocation range](#range)
* [Automatic allocation across multiple subnets](#subnets)
@@ -16,27 +19,6 @@ across the network.
* [Stopping and removing peers](#stop)
* [Troubleshooting](#troubleshooting)
## <a name="usage"></a>Usage
Containers are automatically allocated an IP address when none is
specified when the container is started, e.g.
host1$ weave launch && weave launch-proxy
host1$ eval $(weave proxy-env)
host1$ C=$(docker run -ti ubuntu)
You can see which address was allocated with
[`weave ps`](troubleshooting.html#list-attached-containers):
host1$ weave ps $C
a7aff7249393 7a:51:d1:09:21:78 10.128.0.1/10
Weave detects when a container has exited and releases its
automatically allocated addresses so they can be re-used.
Automatic IP address assignment is available for the `run`, `start`,
`attach`, `detach`, `expose`, `hide` and `launch-dns` commands.
## <a name="initialisation"></a>Initialisation
Just once, when the first automatic IP address allocation is requested