1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
<?xml version='1.0'?>
<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
<!ENTITY % entities SYSTEM "common.ent" >
%entities;
]>
<!--
nm-initrd-generator(8) manual page
Copyright 2018 Red Hat, Inc.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1
or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
Texts. You may obtain a copy of the GNU Free Documentation License
from the Free Software Foundation by visiting their Web site or by
writing to:
Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-->
<refentry id='nm-initrd-generator'>
<refentryinfo>
<title>nm-initrd-generator</title>
<author>NetworkManager developers</author>
</refentryinfo>
<refmeta>
<refentrytitle>nm-initrd-generator</refentrytitle>
<manvolnum>8</manvolnum>
<refmiscinfo class="source">NetworkManager</refmiscinfo>
<refmiscinfo class="manual">System Administration</refmiscinfo>
<refmiscinfo class="version">&NM_VERSION;</refmiscinfo>
</refmeta>
<refnamediv>
<refname>nm-initrd-generator</refname>
<refpurpose>early boot NetworkManager configuration generator</refpurpose>
</refnamediv>
<refsynopsisdiv id='synopsis'>
<cmdsynopsis>
<command>nm-initrd-generator</command>
<arg choice="opt" rep="repeat"><replaceable>OPTIONS</replaceable></arg>
<arg choice="plain">--</arg>
<arg choice="opt" rep="repeat"><replaceable>CMDLINE</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1 id='description'><title>Description</title>
<para><command>nm-initrd-generator</command> scans the command line for options
relevant to network configuration and creates configuration files for an early
instance of NetworkManager run from the initial ramdisk during early boot.</para>
</refsect1>
<refsect1 id='options'><title>Options</title>
<variablelist>
<varlistentry>
<term>
<group choice='plain'>
<arg choice='plain'><option>-c</option></arg>
<arg choice='plain'><option>--connections-dir</option></arg>
</group>
<arg choice='plain'><replaceable>path</replaceable></arg>
</term>
<listitem>
<para>Output connection directory.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<group choice='plain'>
<arg choice='plain'><option>-i</option></arg>
<arg choice='plain'><option>--initrd-data-dir</option></arg>
</group>
<arg choice='plain'><replaceable>path</replaceable></arg>
</term>
<listitem>
<para>Output directory for initrd data (e.g. hostname).</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<group choice='plain'>
<arg choice='plain'><option>-d</option></arg>
<arg choice='plain'><option>--sysfs-dir</option></arg>
</group>
<arg choice='plain'><replaceable>path</replaceable></arg>
</term>
<listitem>
<para>The sysfs mount point.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<group choice='plain'>
<arg choice='plain'><option>-r</option></arg>
<arg choice='plain'><option>--run-config-dir</option></arg>
</group>
<arg choice='plain'><replaceable>path</replaceable></arg>
</term>
<listitem>
<para>Output directory for config files.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<group choice='plain'>
<arg choice='plain'><option>-s</option></arg>
<arg choice='plain'><option>--stdout</option></arg>
</group>
</term>
<listitem>
<para>Dump connections to standard output. Useful for debugging.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>CMDLINE</replaceable></term>
<listitem>
<para>The options that appear on the kernel command line. The following options are recognized:</para>
<simplelist>
<member><option>ip</option></member>
<member><option>rd.route</option></member>
<member><option>bridge</option></member>
<member><option>bond</option></member>
<member><option>team</option></member>
<member><option>vlan</option></member>
<member><option>ib.pkey</option></member>
<member><option>bootdev</option></member>
<member><option>nameserver</option></member>
<member><option>rd.peerdns</option></member>
<member><option>rd.bootif</option></member>
<member><option>rd.ethtool</option></member>
<member><option>rd.net.timeout.dhcp</option></member>
<member><option>rd.net.timeout.carrier</option></member>
<member><option>rd.znet</option></member>
<member><option>BOOTIF</option></member>
</simplelist>
<para>Please consult the <citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>
manual for the documentation of the precise format of the values supported.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id='differences_from_network_legacy'><title>Differences from the network-legacy dracut module</title>
<para><command>nm-initrd-generator</command> generates a set of
connections that are then configured by the NetworkManager
instance running in the initrd. There are some differences in
behavior compared to the network-legacy dracut module:</para>
<itemizedlist>
<listitem>
<para>When an interface is configured with a static address
and a gateway, the network-legacy module waits that the
gateway responds to arping requests before proceeding, while
NetworkManager doesn't.</para>
</listitem>
<listitem>
<para>network-legacy configures interfaces one by one in the
order in which they are announced by udev. If multiple
interfaces specify a hostname (from command line or from
DHCP), the one from the last interface activated wins. With
NetworkManager, hostnames from command line have higher
precedence over ones from DHCP, and the last that appears in
the command line wins.</para>
</listitem>
<listitem>
<para>NetworkManager supports the
<option>ib.pkey</option>=<replaceable>PARENT</replaceable>.<replaceable>PKEY</replaceable>
argument to set up an Infiniband partition on IPoIB parent
device <replaceable>PARENT</replaceable> using the specified
partition key <replaceable>PKEY</replaceable>. The partition
key must be in hexadecimal notation without leading "0x", for
example "ib.pkey=ib0.8004".
</para>
</listitem>
<listitem>
<para>NetworkManager supports the
<option>rd.ethtool</option>=<replaceable>INTERFACE</replaceable>:<replaceable>AUTONEG</replaceable>:<replaceable>SPEED</replaceable>
kernel command line option to set up ethtool NIC configuration parameters
<replaceable>AUTONEG</replaceable> and <replaceable>SPEED</replaceable>.
The <replaceable>INTERFACE</replaceable> being configured must be
specified, and the other parameters are optional and can be left blank.
When <replaceable>SPEED</replaceable> is set, duplex mode is
automatically set to 'full'. <replaceable>INTERFACE</replaceable>
accepts string values, <replaceable>AUTONEG</replaceable> accepts
boolean values (true and false / on or off / 0 or 1), and
<replaceable>SPEED</replaceable> accepts positive integer values.
</para>
</listitem>
</itemizedlist>
</refsect1>
<refsect1 id='exit_status'><title>Exit Status</title>
<para><command>nm-initrd-generator</command> exits with status 0. It ignores unrecognized
options and prints an error message if it encounters a malformed option.</para>
</refsect1>
<refsect1 id='see_also'><title>See Also</title>
<para><link linkend='dracut.cmdline'><citerefentry><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry></link>,
<link linkend='NetworkManager'><citerefentry><refentrytitle>NetworkManager</refentrytitle><manvolnum>8</manvolnum></citerefentry></link>.</para>
</refsect1>
</refentry>
|
