{"id":722,"date":"2018-05-25T20:10:28","date_gmt":"2018-05-25T18:10:28","guid":{"rendered":"https:\/\/markus-blog.de\/?p=722"},"modified":"2018-05-25T11:51:17","modified_gmt":"2018-05-25T09:51:17","slug":"unter-ubuntu-16-04-lts-hostnamen-und-mailnamen-permanent-setzen","status":"publish","type":"post","link":"https:\/\/markus-blog.de\/index.php\/2018\/05\/25\/unter-ubuntu-16-04-lts-hostnamen-und-mailnamen-permanent-setzen\/","title":{"rendered":"Unter Ubuntu 16.04 LTS Hostnamen und Mailnamen permanent setzen"},"content":{"rendered":"<p>Heute wollen wir den Hostnamen unseres VPS so setzen, dass dieser nach einem Neustart nicht zur\u00fcckgesetzt wird. Einige Anbieter setzen den Hostnamen nach einem Neustart zur\u00fcck, also umgehen wir dies, wenn notwendig mit einem Skript, das die entsprechenden Anpassungen f\u00fcr uns beim Booten vornimmt.<\/p>\n<p>Zuerst m\u00fcssen wir eine Datei namens set_vps_hostname.service in \/etc\/systemd\/system\/ erstellen:<\/p>\n<pre>sudo nano \/etc\/systemd\/system\/set_vps_hostname.service<\/pre>\n<p>Inhalt:<\/p>\n<pre>[Unit]\r\nDescription=Setze meinen Hostnamen beim Booten\r\nBefore=rsyslog.service\r\n\r\n[Service]\r\nType=oneshot\r\nExecStart=\/usr\/local\/bin\/set_vps_hostname\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n<p>Jetzt m\u00fcssen wir das Skript set_vps_hostname erstellen (Hostnamen bitte anpassen):<\/p>\n<pre>sudo nano \/usr\/local\/bin\/set_vps_hostname<\/pre>\n<p>Inhalt:<\/p>\n<pre>#!\/bin\/bash\r\nHOSTNAME=www.markus-blog.de # <---hier Hostnamen anpassen\r\n[ -f \/etc\/hostname ] &#038;&#038; echo $HOSTNAME > \/etc\/hostname\r\n[ -f \/etc\/HOSTNAME ] && echo $HOSTNAME > \/etc\/HOSTNAME\r\n[ -f \/etc\/mailname ] && echo $HOSTNAME > \/etc\/mailname\r\n[ -f \/etc\/sysconfig\/network ] && sed -i.hebackup s\/HOSTNAME=\".*\"\/HOSTNAME=\"$HOSTNAME\"\/ \/etc\/sysconfig\/network\r\n\/bin\/hostname $HOSTNAME\r\n[ -f \/etc\/my.resolv.conf ] && cp \/etc\/my.resolv.conf \/etc\/resolv.conf\r\n[ -f \/etc\/my.hosts ] && cp \/etc\/my.hosts \/etc\/hosts\r\nexit 0<\/pre>\n<p>und es ausf\u00fchrbar machen:<\/p>\n<pre>sudo chmod +x \/usr\/local\/bin\/set_vps_hostname<\/pre>\n<p>Wir setzen den Hostnamen ebenfalls in \/etc\/hosts:<\/p>\n<pre>sudo nano \/etc\/hosts<\/pre>\n<p>dort \u00e4ndern wir den alten Hostnamen auf unseren neuen und kopieren die Datei nach \/etc\/my.hosts:<\/p>\n<pre>sudo cp \/etc\/hosts \/etc\/my.hosts<\/pre>\n<p>wenn wir unsere eigenen Nameserver nutzen, passen wir auch die \/etc\/resolv.conf an:<\/p>\n<pre>sudo nano \/etc\/resolv.conf<\/pre>\n<p>und kopieren diese nach \/etc\/my.resolv.conf:<\/p>\n<pre>sudo cp \/etc\/resolv.conf \/etc\/my.resolv.conf<\/pre>\n<p>Jetzt m\u00fcssen wir unseren Dienst aktivieren und einen Reboot durchf\u00fchren, um den Hostnamen zu setzen (bitte beachten, dass dieser Befehl den VPS neu startet):<\/p>\n<pre>sudo systemctl daemon-reload && sudo systemctl enable set_vps_hostname.service && sudo systemctl start set_vps_hostname.service && sudo systemctl restart rsyslog && sudo reboot<\/pre>\n<p>Nach dem Reboot \u00fcberpr\u00fcfen wir den Host- und Mailname des VPS:<\/p>\n<pre>cat \/etc\/hostname\r\ncat \/etc\/mailname<\/pre>\n<p>Das war es f\u00fcr heute! 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