257 lines
11 KiB
XML
257 lines
11 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-21.03">
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<title>Release 21.03 (“Okapi”, 2021.03/??)</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-21.03-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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Support is planned until the end of October 2021, handing over to 21.09.
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</para>
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</listitem>
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<listitem>
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<para>GNOME desktop environment was upgraded to 3.38, see its <link xlink:href="https://help.gnome.org/misc/release-notes/3.38/">release notes</link>.</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-21.03-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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<link xlink:href="https://www.keycloak.org/">Keycloak</link>,
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an open source identity and access management server with
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support for <link
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xlink:href="https://openid.net/connect/">OpenID Connect</link>,
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<link xlink:href="https://oauth.net/2/">OAUTH 2.0</link> and
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<link xlink:href="https://en.wikipedia.org/wiki/SAML_2.0">SAML
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2.0</link>.
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</para>
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<para>
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See the <link linkend="module-services-keycloak">Keycloak
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section of the NixOS manual</link> for more information.
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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-21.03-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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<literal>systemd-journal2gelf</literal> no longer parses json and expects the receiving system to handle it. How to achieve this with Graylog is described in this <link xlink:href="https://github.com/parse-nl/SystemdJournal2Gelf/issues/10">GitHub issue</link>.
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</para>
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</listitem>
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<listitem>
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<para>
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If the <varname>services.dbus</varname> module is enabled, then
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the user D-Bus session is now always socket activated. The
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associated options <varname>services.dbus.socketActivated</varname>
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and <varname>services.xserver.startDbusSession</varname> have
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therefore been removed and you will receive a warning if
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they are present in your configuration. This change makes the
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user D-Bus session available also for non-graphical logins.
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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 option <option>fonts.enableFontDir</option> has been renamed to
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<xref linkend="opt-fonts.fontDir.enable"/>. The path of font directory
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has also been changed to <literal>/run/current-system/sw/share/X11/fonts</literal>,
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for consistency with other X11 resources.
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</para>
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</listitem>
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<listitem>
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<para>
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A number of options have been renamed in the kicad interface. <literal>oceSupport</literal>
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has been renamed to <literal>withOCE</literal>, <literal>withOCCT</literal> has been renamed
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to <literal>withOCC</literal>, <literal>ngspiceSupport</literal> has been renamed to
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<literal>withNgspice</literal>, and <literal>scriptingSupport</literal> has been renamed to
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<literal>withScripting</literal>. Additionally, <literal>kicad/base.nix</literal> no longer
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provides default argument values since these are provided by
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<literal>kicad/default.nix</literal>.
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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 socket for the <literal>pdns-recursor</literal> module was moved from <literal>/var/lib/pdns-recursor</literal>
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to <literal>/run/pdns-recursor</literal> to match upstream.
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</para>
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</listitem>
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<listitem>
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<para>
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PowerDNS has been updated from <literal>4.2.x</literal> to <literal>4.3.x</literal>. Please
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be sure to review the <link xlink:href="https://doc.powerdns.com/authoritative/upgrading.html#x-to-4-3-0">Upgrade Notes</link>
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provided by upstream before upgrading. Worth specifically noting is that the service now runs
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entirely as a dedicated <literal>pdns</literal> user, instead of starting as <literal>root</literal>
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and dropping privileges, as well as the default <literal>socket-dir</literal> location changing from
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<literal>/var/lib/powerdns</literal> to <literal>/run/pdns</literal>.
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</para>
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</listitem>
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<listitem>
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<para>
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<package>btc1</package> has been abandoned upstream, and removed.
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</para>
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</listitem>
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<listitem>
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<para>
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<package>riak-cs</package> package removed along with <varname>services.riak-cs</varname> module.
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</para>
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</listitem>
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<listitem>
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<para>
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<package>stanchion</package> package removed along with <varname>services.stanchion</varname> module.
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</para>
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</listitem>
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<listitem>
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<para>
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<package>mutt</package> has been updated to a new major version (2.x), which comes with
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some backward incompatible changes that are described in the
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<link xlink:href="http://www.mutt.org/relnotes/2.0/">release notes for Mutt 2.0</link>.
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</para>
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</listitem>
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<listitem>
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<para>
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<literal>vim</literal> switched to Python 3, dropping all Python 2 support.
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</para>
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</listitem>
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<listitem>
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<para>
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<link linkend="opt-boot.zfs.forceImportAll">boot.zfs.forceImportAll</link>
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previously did nothing, but has been fixed. However its default has been
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changed to <literal>false</literal> to preserve the existing default
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behaviour. If you have this explicitly set to <literal>true</literal>,
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please note that your non-root pools will now be forcibly imported.
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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-21.03-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 default-version of <literal>nextcloud</literal> is <package>nextcloud20</package>.
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Please note that it's <emphasis>not</emphasis> possible to upgrade <literal>nextcloud</literal>
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across multiple major versions! This means that it's e.g. not possible to upgrade
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from <package>nextcloud18</package> to <package>nextcloud20</package> in a single deploy.
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</para>
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<para>
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The package can be manually upgraded by setting <xref linkend="opt-services.nextcloud.package" />
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to <package>nextcloud20</package>.
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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 setting <xref linkend="opt-services.redis.bind" /> defaults to <literal>127.0.0.1</literal> now, making Redis listen on the loopback interface only, and not all public network interfaces.
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</para>
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</listitem>
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<listitem>
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<para>
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NixOS now emits a deprecation warning if systemd's <literal>StartLimitInterval</literal> setting is used in a <literal>serviceConfig</literal> section instead of in a <literal>unitConfig</literal>; that setting is deprecated and now undocumented for the service section by systemd upstream, but still effective and somewhat buggy there, which can be confusing. See <link xlink:href="https://github.com/NixOS/nixpkgs/issues/45785">#45785</link> for details.
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</para>
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<para>
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All services should use <xref linkend="opt-systemd.services._name_.startLimitIntervalSec" /> or <literal>StartLimitIntervalSec</literal> in <xref linkend="opt-systemd.services._name_.unitConfig" /> instead.
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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 Unbound DNS resolver service (<literal>services.unbound</literal>) has been refactored to allow reloading, control sockets and to fix startup ordering issues.
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</para>
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<para>
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It is now possible to enable a local UNIX control socket for unbound by setting the <xref linkend="opt-services.unbound.localControlSocketPath" />
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option.
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</para>
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<para>
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Previously we just applied a very minimal set of restrictions and
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trusted unbound to properly drop root privs and capabilities.
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</para>
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<para>
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As of this we are (for the most part) just using the upstream
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example unit file for unbound. The main difference is that we start
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unbound as <literal>unbound</literal> user with the required capabilities instead of
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letting unbound do the chroot & uid/gid changes.
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</para>
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<para>
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The upstream unit configuration this is based on is a lot stricter with
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all kinds of permissions then our previous variant. It also came with
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the default of having the <literal>Type</literal> set to <literal>notify</literal>, therefore we are now also
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using the <literal>unbound-with-systemd</literal> package here. Unbound will start up,
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read the configuration files and start listening on the configured ports
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before systemd will declare the unit <literal>active (running)</literal>.
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This will likely help with startup order and the occasional race condition during system
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activation where the DNS service is started but not yet ready to answer
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queries. Services depending on <literal>nss-lookup.target</literal> or <literal>unbound.service</literal>
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are now be able to use unbound when those targets have been reached.
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</para>
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<para>
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Aditionally to the much stricter runtime environmet the
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<literal>/dev/urandom</literal> mount lines we previously had in the code (that would
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randomly failed during the stop-phase) have been removed as systemd will take care of those for us.
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</para>
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<para>
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The <literal>preStart</literal> script is now only required if we enabled the trust
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anchor updates (which are still enabled by default).
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</para>
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<para>
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Another benefit of the refactoring is that we can now issue reloads via
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either <literal>pkill -HUP unbound</literal> and <literal>systemctl reload unbound</literal> to reload the
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running configuration without taking the daemon offline. A prerequisite
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of this was that unbound configuration is available on a well known path
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on the file system. We are using the path <literal>/etc/unbound/unbound.conf</literal> as that is the
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default in the CLI tooling which in turn enables us to use
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<literal>unbound-control</literal> without passing a custom configuration location.
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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>
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