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#How to Build Open Network Linux

In case you are not interested in building ONL from scratch (it takes a while) you can download pre-compiled binaries from http://opennetlinux.org/binaries .

Build Hosts and Environments

ONL builds with Docker so the only requirements on the build system is:

  • docker # to grab the build workspace
  • binfmt-support # kernel support for ppc builds
  • About 40G of disk free space # to build all images
  • At least 4G of ram and 4G of swap # compilation is memory intensive

All of the testing is done with Debian, other Linux distributions may work, but we suggest using Debian 8. # apt-get install binfmt-support then follow the instructions at: https://docs.docker.com/engine/installation/debian/

Build ONL Summary

The easiest way to build is to use the make docker command:

#> git clone https://github.com/opencomputeproject/OpenNetworkLinux
#> cd OpenNetworkLinux
#> make docker

This will build a Debian 7 based ONL from the master branch

To build a Debian 8 based ONL run:

#> git clone https://github.com/opencomputeproject/OpenNetworkLinux
#> cd OpenNetworkLinux
#> export VERSION=8
#> make docker

If you would like to build by hand you can do the following:

#> git clone https://github.com/opencomputeproject/OpenNetworkLinux
#> cd OpenNetworkLinux
#> docker/tools/onlbuilder (-8)             # enter the docker workspace
#> apt-cacher-ng
#> source setup.env                         # pull in necessary environment variables
#> make amd64 ppc                           # make onl for $platform (currently amd64 or powerpc)

The resulting ONIE installers are in $ONL/RELEASE/$SUITE/$ARCH/ONL-2.*INSTALLER, i.e. RELEASE/jessie/amd64/ONL-2.0.0_ONL-OS_2015-12-12.0252-ffce159_AMD64_INSTALLER and the SWI files (if you want them) are in $ONL/RELEASE/$SUITE/$ARCH/ONL*.swi. i.e. RELEASE/jessie/amd64/ONL-2.0.0_ONL-OS_2015-12-12.0252-ffce159_AMD64.swi

#Installing Docker Gotchas

Docker installer oneliner (for reference: see docker.com for details)

# wget -qO- https://get.docker.com/ | sh

Common docker related issues:

  • Check out http://docs.docker.com/installation/debian/ for detailed instructions
  • You may have to update your kernel to 3.10+
  • Beware that apt-get install docker installs a dock application not docker :-) You want the lxc-docker package instead.
  • Some versions of docker are unhappy if you use a local DNS caching resolver:
    • e.g., you have 127.0.0.1 in your /etc/resolv.conf
      • if you have this, specify DNS="--dns 8.8.8.8" when you enter the docker environment
    • e.g., make DNS="--dns 8.8.8.8" docker

Consider enabling builds for non-privileged users with:

  • sudo usermod -aG docker $USER
  • If you run as non-root without this, you will get errors like ..: dial unix /var/run/docker.sock: permission denied
  • Building as root is fine as well (it immediately jumps into a root build shell), so this optional

#Additional Build Details

The rest of this guide talks about how to build specific sub-components of the ONL ecosystem and tries to overview all of the various elements of the build.

Build all .deb packages for all architectures

#> cd $ONL/packages
#> make
#> find $ONL/REPO -name \*.deb    # all of the .deb files end up here

A number of things will happen automatically, including:

  • git submodule checkouts and updates for kernel, loader, and additional code repositories
  • automatic builds of all debian packages and their dependencies
  • automatic download of binary-only .deb packages from apt.opennetlinux.org

After all components have been built, your can build an ONL Software Image from those components.

Adding/Removing packages from a SWI:

The list of packages for a given SWI are in

$ONL/builds/any/rootfs/jessie/common/*.yml

The "all-base-packages.yml" file is for all architectures and the rest are architecture specific package lists.

Example setup on new Debian 8.2 installation

Install sudo and add yourself to the sudoers:

As root:

apt-get install sudo
vi /etc/sudoers.d/username

Add the line:

username    ALL=(ALL:ALL) ALL

Add the docker key:

sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

gpg: key 2C52609D: public key "Docker Release Tool (releasedocker) <docker@docker.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)

Install necessary items, make, binfmt-support and apt-transport-https (for docker):

sudo apt-get install apt-transport-https make binfmt-support

Add the docker repository to your system:

sudo vi /etc/apt/sources.list.d/docker.list

Add the following line to the file:

deb https://apt.dockerproject.org/repo debian-jessie main

Install Docker:

sudo apt-get update
sudo apt-get install docker-engine

Test Docker:

sudo docker run hello-world

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
b901d36b6f2f: Pull complete
0a6ba66e537a: Pull complete
Digest: sha256:8be990ef2aeb16dbcb9271ddfe2610fa6658d13f6dfb8bc72074cc1ca36966a7
Status: Downloaded newer image for hello-world:latest

Hello from Docker.
This message shows that your installation appears to be working correctly.

Add yourself to the docker group:

sudo gpasswd -a user1 docker

Adding user user1 to group docker

logout and log back in for the group to take effect:

Clone the OpenNetworkLinux repository:

git clone https://github.com/opencomputeproject/OpenNetworkLinux.git

Cloning into 'OpenNetworkLinux'...
Checking connectivity... done.

Build OpenNetworkLinux:

#> cd OpenNetworkLinux/
#> make docker
#> Pulling opennetworklinux/builder7:1.0…

Or:

#> docker/tools/onlbuilder
#> source setup.env
#> apt-cacher-ng
#> make onl-x86 onl-ppc