Add Oracle Linux specific documentation for installation of Docker from Oracle Linux repositories on Oracle Linux 6 and 7.

Signed-off-by: Avi Miller <avi.miller@oracle.com>

docs/mkdocs.yml

@@ -34,6 +34,7 @@ pages:
 - ['installation/mac.md', 'Installation', 'Mac OS X']
 - ['installation/ubuntulinux.md', 'Installation', 'Ubuntu']
 - ['installation/rhel.md', 'Installation', 'Red Hat Enterprise Linux']
+- ['installation/oracle.md', 'Installation', 'Oracle Linux']
 - ['installation/centos.md', 'Installation', 'CentOS']
 - ['installation/debian.md', 'Installation', 'Debian']
 - ['installation/gentoolinux.md', 'Installation', 'Gentoo']

docs/sources/installation/oracle.md

@@ -0,0 +1,120 @@
+page_title: Installation on Oracle Linux
+page_description: Installation instructions for Docker on Oracle Linux.
+page_keywords: Docker, Docker documentation, requirements, linux, rhel, centos, oracle, ol
+
+# Oracle Linux 6 and 7
+
+You do not require an Oracle Linux Support subscription to install Docker on
+Oracle Linux.
+
+*For Oracle Linux customers with an active support subscription:*
+Docker is available in either the `ol6_x86_64_addons` or `ol7_x86_64_addons`
+channel for Oracle Linux 6 and Oracle Linux 7 on the [Unbreakable Linux Network
+(ULN)](https://linux.oracle.com).
+
+*For Oracle Linux users without an active support subscription:*
+Docker is available in the appropriate `ol6_addons` or `ol7_addons` repository
+on [Oracle Public Yum](http://public-yum.oracle.com).
+
+Docker requires the use of the Unbreakable Enterprise Kernel Release 3 (3.8.13)
+or higher on Oracle Linux. This kernel supports the Docker btrfs storage engine
+on both Oracle Linux 6 and 7.
+
+Due to current Docker limitations, Docker is only able to run only on the x86_64
+architecture.
+
+## To enable the *addons* channel via the Unbreakable Linux Network:
+
+1. Enable either the *ol6\_x86\_64\_addons* or *ol7\_x86\_64\_addons* channel
+via the ULN web interface.
+Consult the [Unbreakable Linux Network User's
+Guide](http://docs.oracle.com/cd/E52668_01/E39381/html/index.html) for
+documentation on subscribing to channels.
+
+## To enable the *addons* repository via Oracle Public Yum:
+
+The latest release of Oracle Linux 6 and 7 are automatically configured to use
+the Oracle Public Yum repositories during installation. However, the *addons*
+repository is not enabled by default.
+
+To enable the *addons* repository:
+
+1. Edit either `/etc/yum.repos.d/public-yum-ol6.repo` or
+`/etc/yum.repos.d/public-yum-ol7.repo`
+and set `enabled=1` in the `[ol6_addons]` or the `[ol7_addons]` stanza.
+
+## To install Docker:
+
+1. Ensure the appropriate *addons* channel or repository has been enabled.
+
+2. Use yum to install the Docker package:
+
+		$ sudo yum install docker
+
+## To start Docker:
+
+1. Now that it's installed, start the Docker daemon:
+
+	1. On Oracle Linux 6:
+
+	    	$ sudo service docker start
+
+	2. On Oracle Linux 7:
+
+			$ sudo systemctl start docker.service
+
+2. If you want the Docker daemon to start automatically at boot:
+
+	1. On Oracle Linux 6:
+
+	    	$ sudo chkconfig docker on
+
+	2. On Oracle Linux 7:
+
+			$ sudo systemctl enable docker.service
+
+**Done!**
+
+## Using the btrfs storage engine
+
+Docker on Oracle Linux 6 and 7 supports the use of the btrfs storage engine.
+Before enabling btrfs support, ensure that `/var/lib/docker` is stored on a
+btrfs-based filesystem. Review [Chapter
+5](http://docs.oracle.com/cd/E37670_01/E37355/html/ol_btrfs.html) of the [Oracle
+Linux Administrator's Solution
+Guide](http://docs.oracle.com/cd/E37670_01/E37355/html/index.html) for details
+on how to create and mount btrfs filesystems.
+
+To enable btrfs support on Oracle Linux:
+
+1. Ensure that `/var/lib/docker` is on a btrfs filesystem.
+1. Edit `/etc/sysconfig/docker` and add `-s btrfs` to the `OTHER_ARGS` field.
+2. Restart the Docker daemon:
+
+You can now continue with the [Docker User Guide](/userguide/).
+
+## Known issues
+
+### Docker unmounts btrfs filesystem on shutdown
+If you're running Docker using the btrfs storage engine and you stop the Docker
+service, it will unmount the btrfs filesystem during the shutdown process. You
+should ensure the filesystem is mounted properly prior to restarting the Docker
+service.
+
+On Oracle Linux 7, you can use a `systemd.mount` definition and modify the
+Docker `systemd.service` to depend on the btrfs mount defined in systemd.
+
+### SElinux Support on Oracle Linux 7
+SElinux must be set to `Permissive` or `Disabled` in `/etc/sysconfig/selinux` to
+use the btrfs storage engine on Oracle Linux 7.
+
+## Further issues?
+
+If you have a current Basic or Premier Support Subscription for Oracle Linux,
+you can report any issues you have with the installation of Docker via a Service
+Request at [My Oracle Support](http://support.oracle.com).
+
+If you do not have an Oracle Linux Support Subscription, you can use the [Oracle
+Linux
+Forum](https://community.oracle.com/community/server_%26_storage_systems/linux/
+oracle_linux) for community-based support.