LPS:CFEngine3/hands-on

Instalace

echo "deb http://cfengine.com/pub/apt stable main" >> /etc/apt/sources.list
echo "deb http://download.zcu.cz/public/software/linux/debian stable main" >> /etc/apt/sources.list

apt-get update
apt-get install cfengine-community vim-syntax-cfengine3

Ukázkové bundly

Spousta příkladů:

/var/cfengine/share/doc/examples

Hello world: test1.cf

body common control {
  bundlesequence => {"main"};
}

bundle agent main {
reports:
  verbose::
    "Hello World";
}

cf-agent -Kf ./test1.cf 
cf-agent -Kf ./test1.cf -D verbose
2014-03-18T17:11:18+0100   notice: R: Hello World

Soubor: test2.cf

body common control {
  bundlesequence => { "main" };
}

bundle agent main {
vars:
  any::
    "file"
      string => "/tmp/cftest.txt";

classes:
  any::
    "file_exists"
      expression => fileexists("$(file)");

files:
  any::
    "/tmp/cftest.txt"
      create => "true",
      classes => if_repaired("file_created");

reports:
  file_exists::
    "Soubor existuje";

  file_created::
    "Soubor byl vytvoren";
}

cf-promises -cf ./test2.cf
./test2.cf:20:0: error: Undefined body if_repaired with type classes

Ukradneme z /var/cfengine/share/CoreBase/lib/3.5/common.cf

body classes if_repaired(x)
{
  promise_repaired => { "$(x)" };
}

cf-promises -cf ./test2.cf
cf-agent -KInf ./test2.cf
cf-agent -KInf ./test2.cf

Úkoly

1. nastavit opravneni souboru

První kontakt

cf-agent --bootstrap cf.civ.zcu.cz

Co jsme získali?

cd /var/cfengine/
ls inputs
ls masterfiles