Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- ubuntu:20-04_server_install [2021/04/19 16:46] – [Handwerkszeug installieren] ergänzt Sebastian Hetzel
+++ ubuntu:20-04_server_install [2021/10/03 15:21] (aktuell) – [IPv6 abschalten] IPv6 statisch (alternativ) Sebastian Hetzel
@@ Zeile 8: / Zeile 8: @@
   * die Locale auf de_de
   * das Keyboard-Layout auf "German QWERTZ"
+  * Hostname
 ===== Handwerkszeug installieren =====
+**aptitude**
+<code>
+# apt-get install aptitude
+</code>
 **VIMnox**
@@ Zeile 52: / Zeile 58: @@
               NTP service: active
           RTC in local TZ: no
+</code>
+===== NTP Client =====
+<file | /etc/systemd/timesyncd.conf>
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+#
+# Entries in this file show the compile time defaults.
+# You can change settings by editing this file.
+# Defaults can be restored by simply deleting this file.
+#
+# See timesyncd.conf(5) for details.
+[Time]
+NTP=ptbtime1.ptb.de
+FallbackNTP=ptbtime3.ptb.de ptbtime2.ptb.de
+</file>
+Momentane Systemzeit ansehen:
+<code>
+timedatectl
+</code>
+<code>
+                      Local time: So 2018-11-25 11:26:59 CET
+                  Universal time: So 2018-11-25 10:26:59 UTC
+                        RTC time: So 2018-11-25 10:27:00
+                       Time zone: Europe/Berlin (CET, +0100)
+       System clock synchronized: yes
+systemd-timesyncd.service active: yes
+                 RTC in local TZ: no
+</code>
+<code>
+systemctl restart  systemd-timesyncd
+systemctl status  systemd-timesyncd
+● systemd-timesyncd.service - Network Time Synchronization
+   Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; vendor preset: enabled)
+   Active: active (running) since Sun 2018-11-25 11:29:00 CET; 1s ago
+     Docs: man:systemd-timesyncd.service(8)
+ Main PID: 16475 (systemd-timesyn)
+   Status: "Synchronized to time server 192.53.103.108:123 (ptbtime1.ptb.de)."
+    Tasks: 2 (limit: 2319)
+   CGroup: /system.slice/systemd-timesyncd.service
+           └─16475 /lib/systemd/systemd-timesyncd
+Nov 25 11:29:00 backup systemd[1]: Starting Network Time Synchronization...
+Nov 25 11:29:00 backup systemd[1]: Started Network Time Synchronization.
+Nov 25 11:29:01 backup systemd-timesyncd[16475]: Synchronized to time server 192.53.103.108:123 (ptbtime1.ptb.de).
 </code>
 ===== Reaktivierung von ifupdown =====
@@ Zeile 98: / Zeile 158: @@
 <code>reboot</code>
+===== IPv6 abschalten =====
+<file | /etc/sysctl.conf>
+[...]
+#disable ipv6
+net.ipv6.conf.all.disable_ipv6 = 1
+net.ipv6.conf.default.disable_ipv6 = 1
+net.ipv6.conf.lo.disable_ipv6 = 1
+</file>
+===== IPv6 statisch (alternativ) =====
+<file | /etc/sysctl.d/50-IPv6.conf>
+net.ipv6.conf.default.accept_ra=0
+net.ipv6.conf.default.autoconf=0
+net.ipv6.conf.all.accept_ra=0
+net.ipv6.conf.all.autoconf=0
+</file>
+<file | /etc/network/interfaces>
+iface ens3 inet6 static
+        address 2001:0DB8:0068:9cb9::3
+        netmask 64
+        gateway 2001:0DB8:0068:9cb9::1
+        dns-nameservers 2620:fe::fe 2606:4700:4700::1111
+</file>
 ===== Firewall =====