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
|
<!--
lxc: linux Container library
(C) Copyright IBM Corp. 2007, 2008
Authors:
Daniel Lezcano <dlezcano at fr.ibm.com>
This library 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.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-->
<!DOCTYPE refentry PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
<!ENTITY commonoptions SYSTEM "@builddir@/common_options.sgml">
<!ENTITY seealso SYSTEM "@builddir@/see_also.sgml">
]>
<refentry>
<docinfo><date>@LXC_GENERATE_DATE@</date></docinfo>
<refmeta>
<refentrytitle>lxc-execute</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>lxc-execute</refname>
<refpurpose>
run an application inside a container.
</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>lxc-execute <replaceable>-n name</replaceable>
<optional>-f config_file</optional> <optional>-s KEY=VAL
</optional>
<optional>--</optional>
<replaceable>command</replaceable></command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>lxc-execute</command> runs the specified
<replaceable>command</replaceable> inside the container
specified by <replaceable>name</replaceable>.
</para>
<para>
It will setup the container
according to the configuration previously defined with the
lxc-create command or with the configuration file parameter.
If no configuration is
defined, the default isolation is used.
</para>
<para>
This command is mainly used when you want to quickly launch an
application in an isolated environment.
</para>
<para>
<command>lxc-execute</command> command will run the
specified command into the container via an intermediate
process, <command>lxc-init</command>.
This lxc-init after launching the specified command,
will wait for its end and all other reparented processes.
(that allows to support daemons in the container).
In other words, in the
container, <command>lxc-init</command> has the pid 1 and the
first process of the application has the pid 2.
</para>
<para>
The above <command>lxc-init</command> is designed to forward received
signals to the started command.
So <command>lxc-kill</command> (1) sent signal is received
by the user specified command (pid 2 in the container).
</para>
</refsect1>
<refsect1>
<title>Options</title>
<variablelist>
<varlistentry>
<term>
<option>-f, --rcfile <replaceable>config_file</replaceable></option>
</term>
<listitem>
<para>
Specify the configuration file to configure the virtualization
and isolation functionalities for the container.
</para>
<para>
This configuration file if present will be used even if there is
already a configuration file present in the previously created
container (via lxc-create).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<option>-s, --define <replaceable>KEY=VAL</replaceable></option>
</term>
<listitem>
<para>
Assign value <replaceable>VAL</replaceable> to configuration
variable <replaceable>KEY</replaceable>. This overrides any
assignment done in <replaceable>config_file</replaceable>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--</option></term>
<listitem>
<para>
Signal the end of options and disables further option
processing. Any arguments after the -- are treated as
arguments.
</para>
<para>
This option is useful when you want to execute, with the
command <command>lxc-execute</command>, a command line
with its own options.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
&commonoptions;
<refsect1>
<title>Diagnostic</title>
<variablelist>
<varlistentry>
<term>The container is busy</term>
<listitem>
<para>
The specified container is already running an
application. You should stop it before reuse this
container or create a new one.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
&seealso;
<refsect1>
<title>Author</title>
<para>Daniel Lezcano <email>daniel.lezcano@free.fr</email></para>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:2
sgml-indent-data:t
sgml-parent-document:nil
sgml-default-dtd-file:nil
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
-->
|
GitWeb