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* The ELK stack is upgraded to 6.3.2. * `elasticsearch6`, `logstash6` and `kibana6` now come with X-Pack which is a suite of additional features. These are however licensed under the unfree "Elastic License". * Fortunately they also provide OSS versions which are now packaged under: `elasticsearch6-oss`, `logstash6-oss` and `kibana6-oss`. Note that the naming of the attributes is consistent with upstream. * The test `nix-build nixos/tests/elk.nix -A ELK-6` will test the OSS version by default. You can also run the test on the unfree ELK using: `NIXPKGS_ALLOW_UNFREE=1 nix-build nixos/tests/elk.nix -A ELK-6 --arg enableUnfree true`
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.