mirror of
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175 lines
6.2 KiB
XML
175 lines
6.2 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-19.09">
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<title>Release 19.09 (“Loris”, 2019/09/??)</title>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-19.09-highlights">
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<title>Highlights</title>
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<para>
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In addition to numerous new and upgraded packages, this release has the
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following highlights:
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</para>
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<itemizedlist>
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<listitem>
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<para />
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</listitem>
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</itemizedlist>
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</section>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-19.09-new-services">
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<title>New Services</title>
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<para>
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The following new services were added since the last release:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Besides the existing <option>services.prometheus</option> module which
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targets Prometheus-1 a new <option>services.prometheus2</option> module
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has been added which targets Prometheus-2.
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</para>
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<para>
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Both modules can be enabled at the same time. In fact
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<link xlink:href="https://prometheus.io/docs/prometheus/latest/migration/#storage">
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this is needed for upgrading existing Prometheus-1 data to Prometheus-2
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</link>.
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-19.09-incompatibilities">
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<title>Backward Incompatibilities</title>
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<para>
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When upgrading from a previous release, please be aware of the following
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incompatible changes:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Buildbot no longer supports Python 2, as support was dropped upstream in
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version 2.0.0. Configurations may need to be modified to make them
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compatible with Python 3.
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</para>
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</listitem>
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<listitem>
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<para>
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PostgreSQL now uses
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<filename class="directory">/run/postgresql</filename> as its socket
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directory instead of <filename class="directory">/tmp</filename>. So
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if you run an application like eg. Nextcloud, where you need to use
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the Unix socket path as the database host name, you need to change it
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accordingly.
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</para>
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</listitem>
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<listitem>
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<para>
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The directory where Prometheus will store its metric data is now
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managed by systemd's StateDirectory mechanism. It still defaults
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to <literal>/var/lib/prometheus</literal>.
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</para>
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<para>
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Its location can be specified by the new
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<option>services.prometheus.stateDir</option> option which
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defaults to <literal>prometheus</literal>. Note that this should
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be a directory relative to <literal>/var/lib/</literal>.
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</para>
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<para>
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The option <option>services.prometheus.dataDir</option> has been
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deprecated. You can still set it but it's now required to have
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<literal>/var/lib/</literal> as a prefix and you can't set
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<option>services.prometheus.stateDir</option> at the same time.
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</para>
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</listitem>
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<listitem>
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<para>
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The options <option>services.prometheus.alertmanager.user</option> and
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<option>services.prometheus.alertmanager.group</option> have been removed
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because the alertmanager service is now using systemd's <link
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xlink:href="http://0pointer.net/blog/dynamic-users-with-systemd.html">
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DynamicUser mechanism</link> which obviates these options.
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</para>
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</listitem>
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<listitem>
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<para>
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The NetworkManager systemd unit was renamed back from network-manager.service to
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NetworkManager.service for better compatibility with other applications expecting this name.
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The same applies to ModemManager where modem-manager.service is now called ModemManager.service again.
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-19.09-notable-changes">
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<title>Other Notable Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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The <option>documentation</option> module gained an option named
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<option>documentation.nixos.includeAllModules</option> which makes the
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generated <citerefentry>
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<refentrytitle>configuration.nix</refentrytitle>
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<manvolnum>5</manvolnum></citerefentry> manual page include all options
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from all NixOS modules included in a given
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<literal>configuration.nix</literal> configuration file. Currently, it is
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set to <literal>false</literal> by default as enabling it frequently
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prevents evaluation. But the plan is to eventually have it set to
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<literal>true</literal> by default. Please set it to
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<literal>true</literal> now in your <literal>configuration.nix</literal>
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and fix all the bugs it uncovers.
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</para>
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</listitem>
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<listitem>
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<para>
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The <literal>vlc</literal> package gained support for Chromecast
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streaming, enabled by default. TCP port 8010 must be open for it to work,
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so something like <literal>networking.firewall.allowedTCPPorts = [ 8010
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];</literal> may be required in your configuration. Also consider enabling
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<link xlink:href="https://nixos.wiki/wiki/Accelerated_Video_Playback">
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Accelerated Video Playback</link> for better transcoding performance.
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</para>
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</listitem>
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<listitem>
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<para>
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The following changes apply if the <literal>stateVersion</literal> is
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changed to 19.09 or higher. For <literal>stateVersion = "19.03"</literal>
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or lower the old behavior is preserved.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<literal>solr.package</literal> defaults to
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<literal>pkgs.solr_8</literal>.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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</itemizedlist>
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</section>
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</section>
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