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linux:systemd [2016/05/02 08:48] – [Debug] niziaklinux:systemd [2017/05/22 14:22] – niziak
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 ===== HowTo ===== ===== HowTo =====
 ==== start / stop ==== ==== start / stop ====
 +Rerun all generators, reload all unit files and recreate dependency tree:
 <code bash> <code bash>
 systemctl daemon-reload systemctl daemon-reload
Line 23: Line 24:
 </code> </code>
  
 +<code bash>
 +systemd-cgtop
 +</code>
  
 ==== emergency mode  ==== ==== emergency mode  ====
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 === Remove startup console clearing === === Remove startup console clearing ===
-<code> +<file | /etc/systemd/system/getty@tty1.service.d/noclear.conf>
-/etc/systemd/system/getty@tty1.service.d/noclear.conf+
  
 [Service] [Service]
 TTYVTDisallocate=no TTYVTDisallocate=no
-</code>+</file>
  
 === udev === === udev ===
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 </code> </code>
 And now device is visible from systemd: And now device is visible from systemd:
-<code>+<code bash>
 systemctl -l -a systemctl -l -a
   dev-input-event0.device                                                                        loaded    active   plugged   /dev/input/event0   dev-input-event0.device                                                                        loaded    active   plugged   /dev/input/event0
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 <code>/etc/systemd/system/ev-input-lcd_sandwich_touchscreen.device.wants</code> <code>/etc/systemd/system/ev-input-lcd_sandwich_touchscreen.device.wants</code>
  
 +=== udev: start service ===
 +To start service if device is inserted:
 +<file | mu.rule>
 +..., TAG+="systemd", ENV{SYSTEMD_WANTS}="netctl-auto@mywifi.service"
 +</file>
 +
 +=== do not mount crypted volumes ===
 +After switching to systemd by command <code bash>apt-get install systemd-sysv</code>, new problem occurs: 
 +system boot stops and waits for password for encrypted partition (with user data - no needed to system start).
 +
 +To prevent automount of crypted volumes, additional parameters 'noauto' and 'noearly' must be added to /etc/crypttab:
 +<file | /etc/crypttab>
 +/MyMountPoint /dev/vg_MyName/lv_MyName none luks,noauto,noearly
 +</file>
 +
 +=== Debian: Set network service timeout ===
 +System startup can hang forever if there is no link on ethernet cable:
 +<code>[    **] A start job is running for LSB: Raise network interf...38s / no limit)</code>
 +To set timeout, add file:
 +<file | /etc/systemd/system/networking.service.d/reduce-timeout.conf>
 +[Service]
 +TimeoutStartSec=15
 +</file>