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recodex-wiki/Build-and-Deployment.md

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Build and Deployment

This page contains steps how to set up a computer and how to successfully build and run ReCodEx. Most steps are listed in two variants, for Red Hat based distributions (like RHEL, Centos or Fedora) and Debian based distibutions. Before starting, make sure you have completed basic OS installation and set up, including users and logins, SSH, Git, firewall, etc.

Table of Content

Common

Repositories

Add testing repositories to Debian OS

  • Create file /etc/apt/apt.conf with content
APT::Default-Release "stable";
  • Add testing repos to /etc/apt/sources.list
deb http://ftp.cz.debian.org/debian/ testing main contrib non-free
deb-src http://ftp.cz.debian.org/debian/ testing contrib non-free
  • Install packages with -t testing option. For example
$ sudo apt-get -t testing install gcc

Add EPEL repository to RHEL

  • See this for instructions.

Installation of dependencies

Install as new version of each package as possible, so mostly Debian packages are from testing repositories and RHEL packages are the newest ones from EPEL repositories.

Basic development tools

  • g++
  • cmake
  • make
  • git

Install ZeroMQ in version at least 4.0

  • Debian package is libzmq3-dev.
  • RedHat packages are zeromq and zeromq-devel.

Install YAML-CPP library

  • Debian packages: libyaml-cpp0.5v5 and libyaml-cpp-dev.
  • RedHat packages are yaml-cpp and yaml-cpp-devel.

Install libcurl library

  • Debian package is libcurl4-gnutls-dev.
  • RedHat package is libcurl-devel.

Worker specific dependencies

Worker requirements are written in this section. Some parts of this guide may be different for each type of worker, for example Compiler principles worker is not fully covered here.

Install libarchive library (optional)

Installing this package will only speed up build process, otherwise libarchive is built from source.

  • Debian package is libarchive-dev.
  • RedHat packages are libarchive and libarchive-devel. These are probably not available for RHEL.

Install Isolate from source

First, we need to compile sandbox Isolate from source and install. Assume that we keep source code in /opt/src dir. For building man page you need to have package asciidoc installed.

$ cd /opt/src
$ git clone https://github.com/ioi/isolate.git
$ cd isolate
$ make
# make install && make install-doc

For proper work Isolate depends on several advanced features of the Linux kernel. Make sure that your kernel is compiled with CONFIG_PID_NS, CONFIG_IPC_NS, CONFIG_NET_NS, CONFIG_CPUSETS, CONFIG_CGROUP_CPUACCT, CONFIG_MEMCG. If your machine has swap enabled, also check CONFIG_MEMCG_SWAP. Which flags was your kernel compiled with can be found in /boot directory, for example in /boot/config-4.2.6-301.fc23.x86_64 file for kernel version 4.2.6-301. Red Hat distros should have these enabled by default, for Debian you you may want to add the parameters cgroup_enable=memory swapaccount=1 to the kernel command-line, which can be set using GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub.

For better reproducibility of results, some kernel parameters can be tweaked:

  • Disable address space randomization. Create file /etc/sysctl.d/10-recodex.conf with content kernel.randomize_va_space=0. Changes will take effect after restart or run sysctl kernel.randomize_va_space=0 command.
  • Disable dynamic CPU frequency scaling. This requires setting the cpufreq scaling governor to performance. TODO - do we really need it and is it worth higher power consumption? Red Hat setup, Debian setup

Clone ReCodEx source code repositories

  • Worker:
$ git clone https://github.com/ReCodEx/worker.git
$ git submodule update --init
  • Broker
$ git clone https://github.com/ReCodEx/broker.git
$ git submodule update --init

Install worker and broker binaries

Installation steps are equal for both worker and broker. Following guide is for worker. It's supposed that your current working directory is that one with clonned worker source codes.

  • Prepare environment running mkdir build && cd build
  • Build sources by cmake .. following by make -j# where '#' symbol refers to number of your CPU threads.
  • Build binary package by make package (may require root permissions). Note that rpm and deb packages are build in the same time. You may need to have rpmbuild command (usually as rpmbuild or rpm package) or edit CPACK_GENERATOR variable CMakeLists.txt file in root of source code tree.
  • Install generated package through your package manager (yum, dnf, dpkg).

Note: If you don't want to generate binary packages, you can just install the project with make install (as root). But installation through your distribution's package manager is preferred way to keep your system clean and manageable in long term horizon.

Compilers

For evaluating jobs you have to install tools that fit your needs. Here are some useful tips of different compillers to install.

C/C++

For compiling C and C++ programs is used GCC compiler. Maybe you could install install most of the staff by executing following command, but it's not needed.

# yum group install "Development Tools"

To install the compiler separately, you could install it from the distribution's repositories.

# yum install gcc gcc-c++ make

To get reasonably new version, you may consider installing Red Hat Developer Toolset 4, or install these from Fedora repo. In Debian, testing repo can be used.

C#

For new versions of Mono, we'll use Xamarin repositories. For Red Hat based OS:

# rpm --import "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"
# yum-config-manager --add-repo http://download.mono-project.com/repo/centos/
# yum upgrade
# yum install mono-complete

For Debian based OS:

$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
$ echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
$ sudo apt-get update
$ sudo apt-get install mono-complete

Free Pascal

Free Pascal compiler 3.0.0 can be downloaded as rpm packages from official website. In Debian, this version is expetimental, but seems to be stable enough.

Java TODO

Windows Worker

From beginning we are determined to support Windows operating system on which some of the workers may run (especially for projects in C# programming language). Support for Windows is quite hard and time consuming and there were several problems during this. To ensure capability of compilation on Windows we set up CI for Windows named Appveyor. However installation should be easy due to provided installation script.

There are only two additional dependencies needed, Windows 7 and higher and Visual Studio 2015+. Provided simple installation batch script should do all the work on Windows machine. Officially only VS2015 and 32-bit compilation is supported, because of hardcoded compile options in installation script. If different VS is needed or different platform, script should be changed to appropriate values, it should be quite simple and straightforward.

Mentioned script is placed in install directory alongside supportive scripts for UNIX systems and is named win-build.cmd. Provided script will do almost all the work connected with building and dependency resolving (using NuGet package manager and msbuild building system). Script should be run under 32-bit version of Developer Command Prompt for VS2015 and from install directory.

Building and installing of worker is then quite simple, script has command line parameters which can be used to specify what will be done:

  • -build - Don't have to be specified. Build worker and all its tests, all is saved in build folder and subfolders.
  • -clean - Cleanup of downloaded NuGet packages and built application/libraries.
  • -test - Build worker and run tests on compiled test cases.
  • -package - Clickable installation generation using cpack and NSIS. NSIS have to be installed on machine to get this to work.
install> win-build.cmd  # same as: win-build.cmd -build
install> win-build.cmd -clean
install> win-build.cmd -test
install> win-build.cmd -package

All build binaries and cmake temporary files can be found in build folder, classically there will be subfolder Release which will contain compiled application with all needed dlls. Once if clickable installation binary is created, it can be found in build folder named something like recodex-worker-${VERSION}-win32.exe.

Clickable installation feature:

NSIS Installation

WebApp