Difference between revisions of "Automatic login to virtual console"

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(Fix path for serial console.)
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[[es:Automatic login to virtual console]]
 
[[es:Automatic login to virtual console]]
 
[[it:Automatic login to virtual console]]
 
[[it:Automatic login to virtual console]]
{{Article summary start}}
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{{Related articles start}}
{{Article summary text|Describes how to automatically log in to a virtual console.}}
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{{Related|Display Manager}}
{{Article summary heading|Related}}
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{{Related|Silent boot}}
{{Article summary wiki|Display Manager}}
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{{Related|Start X at Login}}
{{Article summary wiki|Silent boot}}
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{{Related articles end}}
{{Article summary wiki|Start X at Login}}
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{{Article summary end}}
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This article describes how to automatically log in to a ''virtual console'' at the end of the [[boot process]]. This article only covers console log-ins; methods for starting an [[Xorg|X server]] are described in [[Start X at Login]].
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This article describes how to automatically log in to a [[Wikipedia:Virtual console|virtual console]] at the end of the [[boot process]]. This article only covers console log-ins; see [[Start X at Login]] for information about automatic login into [[Xorg]].
  
== Installation ==
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== Configuration ==
=== Use drop-in feature of systemd for getty autologin ===
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[http://cgit.freedesktop.org/systemd/systemd/tree/NEWS#n655 Since systemd 198] unit files may now be extended via drop-in files without having to edit/override the unit files themselves, to learn more about this feature, consult [http://www.freedesktop.org/software/systemd/man/systemd.unit.html systemd.unit(5)] and search for ''Along with a unit file foo.service a directory foo.service.d/ may exist.''
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There are two types of consoles virtual and serial ones. In most cases you would want to setup up autologin on virtual console, the one which device name is ''ttyN'', where ''N'' is a number. The configuration of the autologin for the serial consoles will be slightly different. Device names of the serial consoles look like ''ttySN'', where ''N'' is a number.
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Configuration relies on systemd [[Systemd#Editing_provided_unit_files|drop-in files]] to override the default parameters passed to ''agetty''.
  
For the virtual console proceed with the following steps, the case with serial console is dealt with at the bottom of this page.
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The configuration differs for virtual and serial consoles. In most cases you would want to setup up automatic login on virtual console, the one which device name is {{ic|tty''N''}}, where {{ic|''N''}} is a number. The configuration of the automatic login for the serial consoles will be slightly different. Device names of the serial consoles look like {{ic|ttyS''N''}}, where {{ic|''N''}} is a number.
  
Create a new directory named {{ic|getty@tty1.service.d}} under {{ic|/etc/systemd/system}}:
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=== Virtual console ===
  
# mkdir /etc/systemd/system/getty@tty1.service.d
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Create the following file (and the leading directories):
  
Then create a new file named {{ic|autologin.conf}} and add it into the directory:
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{{hc|/etc/systemd/system/getty@tty1.service.d/autologin.conf|2=
 
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[Service]
{{hc|/etc/systemd/system/getty@tty1.service.d/autologin.conf|
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2=[Service]
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ExecStart=
 
ExecStart=
ExecStart=-/usr/bin/agetty --autologin <username> --noclear %I 38400 linux
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ExecStart=-/usr/bin/agetty --autologin ''username'' --noclear %I 38400 linux
 
}}
 
}}
  
{{Tip|The option {{ic|1=Type=idle}} will delay the execution of agetty until all jobs (state change requests to units) are completed. On the other hand it may cause systemd boot-up messages to pollute the login prompt. This option is more useful when [[Start X at Login|starting X automatically]]. See {{ic|man systemd.service}} for more info.}}
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{{Tip|The option {{ic|1=Type=idle}} will delay the service startup until all jobs (state change requests to units) are completed. When using {{ic|1=Type=simple}}, the service will be started immediately, but boot-up messages may pollute the login prompt. This option is particularly useful when [[Start X at Login|starting X automatically]]. To use this option, add {{ic|1=Type=simple}} into {{ic|autologin.conf}}.}}
  
By default, {{ic|getty@.service}} uses {{ic|1=Type=idle}}. If you want to use {{ic|1=Type=simple}}, then your {{ic|autologin.conf}} should look like this:
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If you want to use other ''tty'' than ''tty1'' see [[Systemd FAQ#Q:_How_do_I_change_the_number_of_gettys_running_by_default.3F|Systemd FAQ]].
  
{{hc|/etc/systemd/system/getty@tty1.service.d/autologin.conf|
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=== Serial console ===
2=[Service]
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ExecStart=
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ExecStart=-/usr/bin/agetty --autologin <username> --noclear %I 38400 linux
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Type=simple
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}}
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In the case of a serial console you need to create different directory
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Create the following file (and the leading directories):
  
# mkdir /etc/systemd/system/serial-getty@ttyS0.service.d
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{{hc|/etc/systemd/system/serial-getty@ttyS0.service.d/autologin.conf|2=
 
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[Service]
The file {{ic|autologin.conf}} will also look slightly different
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{{hc|/etc/systemd/system/serial-getty@ttyS0.service.d/autologin.conf|
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2=[Service]
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ExecStart=
 
ExecStart=
ExecStart=-/sbin/agetty --autologin <username> -s %I 115200,38400,9600 vt102
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ExecStart=-/sbin/agetty --autologin ''username'' -s %I 115200,38400,9600 vt102
Type=simple
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}}
 
}}
  
== Tips & Tricks ==
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==See also==
  
=== Avoiding unnecessary dmesg errors ===
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* [[Systemd#Change_default_target_to_boot_into|Change default runlevel/target to boot into]]
To avoid errors related to {{ic|display-manager.service}} in dmesg, you should set the default target to multi-user instead of graphical:
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# systemctl enable multi-user.target
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==See also==
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* [[Systemd#Change_default_target_to_boot_into|Change default runlevel/target to boot into]].
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Revision as of 12:30, 29 December 2013

This article describes how to automatically log in to a virtual console at the end of the boot process. This article only covers console log-ins; see Start X at Login for information about automatic login into Xorg.

Configuration

Configuration relies on systemd drop-in files to override the default parameters passed to agetty.

The configuration differs for virtual and serial consoles. In most cases you would want to setup up automatic login on virtual console, the one which device name is ttyN, where N is a number. The configuration of the automatic login for the serial consoles will be slightly different. Device names of the serial consoles look like ttySN, where N is a number.

Virtual console

Create the following file (and the leading directories):

/etc/systemd/system/getty@tty1.service.d/autologin.conf
[Service]
ExecStart=
ExecStart=-/usr/bin/agetty --autologin username --noclear %I 38400 linux
Tip: The option Type=idle will delay the service startup until all jobs (state change requests to units) are completed. When using Type=simple, the service will be started immediately, but boot-up messages may pollute the login prompt. This option is particularly useful when starting X automatically. To use this option, add Type=simple into autologin.conf.

If you want to use other tty than tty1 see Systemd FAQ.

Serial console

Create the following file (and the leading directories):

/etc/systemd/system/serial-getty@ttyS0.service.d/autologin.conf
[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin username -s %I 115200,38400,9600 vt102

See also