Nextcloud install

Doc/Sdi/cloud.xml

@@ -24,7 +24,7 @@
       </listitem>
 
       <listitem>
-        <para> File Up- and Download.</para>
+        <para>File Up- and Download.</para>
       </listitem>
 
       <listitem>
@@ -82,7 +82,7 @@
       </listitem>
 
       <listitem>
-        <para>Economy of scale: Cheap hardware relying on replication. </para>
+        <para>Economy of scale: Cheap hardware relying on replication.</para>
       </listitem>
 
       <listitem>
@@ -90,4 +90,56 @@
       </listitem>
     </itemizedlist>
   </figure>
+
+  <section xml:id="sdi_cloud_exercises_sect">
+    <title>Exercises</title>
+
+    <para>Set up a <productname>Nextcloud</productname> server based on
+    <productname>Apache</productname> and <productname>Mysql</productname>
+    following <link
+    xlink:href="https://help.nextcloud.com/t/complete-nc-installation-on-debian-9-stretch-and-manual-update/21881">Complete
+    NC Installation on Debian 9 Stretch and manual update</link>. Mind the
+    following hints:</para>
+
+    <orderedlist>
+      <listitem>
+        <para>Use <code>https://sdiXY.mi.hdm-stuttgart.de/nextcloud</code>
+        rather than <code>https://sdiXY.mi.hdm-stuttgart.de</code> as base URL
+        to your server reusing your existing <productname>Apache</productname>
+        server installation. This typically corresponds to a
+        <productname>Nextcloud</productname> directory root
+        <filename>/var/www/html/nextcloud</filename> rather then
+        <filename>/var/www/nextcloud</filename>.</para>
+      </listitem>
+
+      <listitem>
+        <para>If you've already configured a <productname>Mysql</productname>
+        server use that one instead of the installation manual's
+        <productname>MariaDB</productname> server.</para>
+      </listitem>
+
+      <listitem>
+        <para>Depending on the <filename>/etc/passwd</filename> home directory
+        settings of user <code>www-data</code> you may have to use
+        <command>sudo -u www-data php /var/www/html/nextcloud/occ ...
+        </command> rather than simply <command>sudo -u www-data ./occ
+        ...</command>.</para>
+      </listitem>
+    </orderedlist>
+
+    <para>After this step log in as user <code>ncadmin</code> and follow <link
+    xlink:href="https://docs.nextcloud.com/server/13/admin_manual/configuration_user/user_auth_ldap.html">User
+    authentication with LDAP</link> configuring <xref linkend="glo_LDAP"/>
+    access. Use ldap1.hdm-stuttgart.de as <xref linkend="glo_LDAP"/>
+    provider.</para>
+
+    <tip>
+      <para>The default <xref linkend="glo_LDAP"/> attribute
+      <property>displayName</property> has to be changed to
+      <property>cn</property>.</para>
+    </tip>
+
+    <para>Test your installation by logging in using your own HdM account
+    credentials.</para>
+  </section>
 </chapter>