Differences

This shows you the differences between two versions of the page.

--- univention:udm [2026/04/08 11:25] – old revision restored (2025/11/24 01:28) 114.119.132.153
+++ univention:udm [2026/04/08 17:38] (current) – old revision restored (2026/03/08 12:18) 47.82.10.246
@@ Line 1: / Line 1: @@
-====== Administration Tips ======
+====== Little known udm commands ======
-===== Restarting All Courier Services in one shot =====
+===== DNS split horizon =====
-<file>
+If you are hosting a domain on the internet and have a host you would like to reach via an internal address instead of an external address then you can do this in UCS. Adding the entry to the GUI is an option but if importing a large zone then that is NOT an option and you will need to use udm.
-root@mail:~# find /etc/init.d/|grep courier|while read line; do $line restart; done
-</file>
-===== Restarting all 3CX services in one shot =====
+==== Create split horizon entry ====
-<file>
+To add a split horizon entry you will have to add a zone entry just like in the GUI but using udm instead.
-root@3cxserver:~# systemctl |grep 3CX|cut -f1 -d" "|while read line; do systemctl restart $line; done
-</file>
-===== Generate a random MAC Address =====
+<code>udm dns/forward_zone create --set zone="host.domainname.tld." --set a="xx.xx.xx.xx" --set nameserver="ucsns.ucsdomain.ucstld."</code>
-<file>
-openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//'
-</file>
-===== How to flush tinydns/dnscache =====
-Some people say using
-<file>
-svc -du dnscache
-</file>
-will flush the dns cache. However, I have never had any such luck and must use the following
-<file>
-svc -t dnscache
-</file>
-===== Rsync complete filesystem =====
-Sometimes I find myself in need of migrating a complete system into a VM or Container. Here is a pretty easy way to minimize downtime later.
-<file>
-rsync -aAHXv /* root@host.domain.tld:/var/lib/vz/private/115 --exclude={/dev/*,/proc/*,/sys/*,/tmp/*,/run/*,/mnt/*,/media/*,/lost+found}
-</file>
-As you can see above I am syncing to an OpenVZ container.
-===== Move a running process to the background =====
-This method cleanly moves a running process to the background and ensures you don't lose it when you log out of the session.
-<file>
-CTRL+z
-bg
-disown -h
-</file>
-Enjoy