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-rw-r--r--nixos/doc/manual/release-notes/rl-1809.xml33
1 files changed, 33 insertions, 0 deletions
diff --git a/nixos/doc/manual/release-notes/rl-1809.xml b/nixos/doc/manual/release-notes/rl-1809.xml
index 33026c5cbae..b6514f41c01 100644
--- a/nixos/doc/manual/release-notes/rl-1809.xml
+++ b/nixos/doc/manual/release-notes/rl-1809.xml
@@ -154,6 +154,39 @@ $ nix-instantiate -E '(import <nixpkgsunstable> {}).gitFull'
       which indicates that the nix output hash will be used as tag.
     </para>
    </listitem>
+   <listitem>
+    <para>
+     The ELK stack: <varname>elasticsearch</varname>, <varname>logstash</varname> and <varname>kibana</varname>
+     has been upgraded from 2.* to 6.3.*.
+     The 2.* versions have been <link xlink:href="https://www.elastic.co/support/eol">unsupported since last year</link>
+     so they have been removed. You can still use the 5.* versions under the names
+     <varname>elasticsearch5</varname>, <varname>logstash5</varname> and
+     <varname>kibana5</varname>.
+    </para>
+    <para>
+     The elastic beats:
+     <varname>filebeat</varname>, <varname>heartbeat</varname>,
+     <varname>metricbeat</varname> and <varname>packetbeat</varname>
+     have had the same treatment: they now target 6.3.* as well.
+     The 5.* versions are available under the names:
+     <varname>filebeat5</varname>, <varname>heartbeat5</varname>,
+     <varname>metricbeat5</varname> and <varname>packetbeat5</varname>
+    </para>
+    <para>
+     The ELK-6.3 stack now comes with
+     <link xlink:href="https://www.elastic.co/products/x-pack/open">X-Pack by default</link>.
+     Since X-Pack is licensed under the
+     <link xlink:href="https://github.com/elastic/elasticsearch/blob/master/licenses/ELASTIC-LICENSE.txt">Elastic License</link>
+     the ELK packages now have an unfree license. To use them you need to specify
+     <literal>allowUnfree = true;</literal> in your nixpkgs configuration.
+    </para>
+    <para>
+     Fortunately there is also a free variant of the ELK stack without X-Pack.
+     The packages are available under the names:
+     <varname>elasticsearch-oss</varname>, <varname>logstash-oss</varname> and
+     <varname>kibana-oss</varname>.
+    </para>
+   </listitem>
   </itemizedlist>
  </section>