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diff --git a/docs/sources/installation/oracle.md b/docs/sources/installation/oracle.md new file mode 100644 index 0000000000..05bb3d9808 --- /dev/null +++ b/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. |