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authorNils Carlson <pyssling@ludd.ltu.se>2015-07-06 00:00:59 +0200
committerNils Carlson <pyssling@ludd.ltu.se>2016-01-12 22:10:41 +0000
commitee48dbd55f544d9ee4a17497b5757be7e854c869 (patch)
treee290abed946e3c8dc1f77efeafe2aec61095265c /man/machine-id.xml
parenta41a7181c9af8f9ac93a85a2cf133294dd202c8e (diff)
core: Add machine-id setting
Allow for overriding all other machine-ids which may be present on the system using a kernel command line systemd.machine_id or --machine-id= option. This is especially useful for network booted systems where the machine-id needs to be static, or for containers where a specific machine-id is wanted.
Diffstat (limited to 'man/machine-id.xml')
-rw-r--r--man/machine-id.xml6
1 files changed, 6 insertions, 0 deletions
diff --git a/man/machine-id.xml b/man/machine-id.xml
index db72c2a01c..d318ec54ec 100644
--- a/man/machine-id.xml
+++ b/man/machine-id.xml
@@ -84,6 +84,12 @@
at install time. Use
<citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
to initialize it on mounted (but not booted) system images.</para>
+
+ <para>The machine-id may also be set, for example when network
+ booting, by setting the <varname>systemd.machine_id=</varname>
+ kernel command line parameter or passing the option
+ <option>--machine-id=</option> to systemd. A machine-id may not
+ be set to all zeros.</para>
</refsect1>
<refsect1>