Questions tagged [systemd]
systemd is an alternative approach to SystemV and Upstart init daemons for Linux. It is intended to provide a better framework for expressing services' dependencies, allow more work to be done in parallel at system startup, and to reduce shell overhead.
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systemd service on shutdown with disk access [backup]
I'd like to run a little backup script (btrfs snapshot + transfer to usb) on system shutdown.
The following service executes perfectly fine on shutdown, but not on reboot as intended:
[Unit]
...
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Systemd service - what is `multi-user.target`
I have come across a .service that contains the following:
[Install]
WantedBy=multi-user.target
The original .service file can be found here.
What is the the meaning of multi-user.target?
I am on ...
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How do I manually trigger systemd's "auto mounting" of encrypted partitions/drives?
I set up two LUKS encrypted drives to automount on system startup (using crypttab and a LUKS file key). It works fine, but unfortunately, if I disconnect one of the drives, the "auto decrypting&...
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Can't upgrade firmware -- fwupd fails to start
I have a Thinkpad T470s running Pop_OS 22.04 and since I got it a year ago, I haven't been able to do any firmware upgrades as fwupd fails to start.
When I run sudo systemctl status fwupd I get:
× ...
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1
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Managing systemd services on read-only filesystem
I am looking for strategies how to manage enabling and disabling of systemd services on a read-only filesystem. It's not possible as the multi-user.target.wants directory contents get modified.
...
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Suppress systemd: "Directory to mount over is not empty, mounting anyway."
I am purposefully mounting a read-write copy of a directory on top of the read-only version of itself.
This generates a log message such as:
Aug 27 14:31:02 svelte systemd[1]: mnt-btrfs\x2dvol-...
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1
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Force reboot if `fstab` mount fails instead of going to emergency mode
I have a fstab with read-only root-fs and also a rw /var mounted on a USB reader with a uSD in it.
Sometimes at boot time system fails to mount /var. It looks like that the system cannot find the ...
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unable to restart ser2net on docker container after editing ser2net.yml ad restarting docker
Edited /etc/ser2net.yml file in docker container.
Added following entry in the ser2net file:
connection: &con40000
accepter: tcp,40000
enable: on
options:
banner: *banner
...
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1
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How do I configure loginctl lock-sessions with i3?
Currently, I'm using i3 with xscreensaver. I would like to configure loginctl such that lock-session and lock-sessions. How is this supposed to be done?
lock-session [ID...], unlock-session [ID...]
...
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What are the systemctl options to "List all failed units"
systemctl
Returns a list of the units, whether they are loaded, active, their sub and description.
systemctl is-failed
Returns a list of status only.
What is the syntax to return the details of ...
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Starting httpd fails in Fedora 39 on WSL2
I installed via WSL2 Fedora version 39, I also installed httpd, but when I run one of this two commands:
systemctl status httpd
service httpd status
I get this error:
System has not been booted with ...
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1
answer
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Custom location for the "installation symlink" of a systemd unit file?
Enabling a systemd service to start at boot is done by enabling it.
Enabling creates a symlink at a specific location.
Example:
$ systemctl enable rsyslog ...
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0
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systemd service getting disabled - why?
I have a systemd service definition (see below) and I've enabled it but in some conditions the target python script starts and returns an error after 10-20 seconds. In this condition systemd loops ...
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logging with util-linux without systemd unit specified
If I log with util-linux logger as below:
/bin/logger "hello world"
I can see through journalctl my log line:
journalctl --since "-1m"
Oct 08 09:12:17 myhomepc duda[11670]: hello world
however ...
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How do I Get My Fingerprint Sensor to work with SDDM Login in NixOS (Plasma 6)
My fingerprint sensor works fine, in fact it works quite well except when it comes to SDDM. I use fprintd and systemd.
I have looked online for solutions, one involved changing some code in a systemd ...
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1
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Systemd and group credentials: failed at GROUP spawning
Recently, one of my servers running Deb 10 stopped responding to everything except SSH. After solving an issue where the filesystem was read-only due to a botched fstab, I am now met with almost all ...
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1
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How to hide boot messages (silent boot) in debian jessie (raspberry pi)?
I'm working with raspberry pi. Previously (debian wheezy), I used the following codes to hide boot messages and have a silent boot, until a code (playing omxplayer on loop) would run from /etc/rc....
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How to change boot order in systemd (PopOS) UEFI?
I habe Windows 10 on one partition, PopOS 22.04 on another. I managed to get them working with the systemd boot manager. How can I change the boot order in the boot menu? (I want Windows to be first, ...
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socat: call from script, bashrc or systemd?
I want to use socat to direct serial commands over ethernet
to an ethernet-serial converter (static IP address).
I am wondering what would be a good way of starting socat.
As I understand it, systemd ...
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answers
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Systemd: do not suspend if operation is performed
How to configure systemd so if an operation is being performed, do nothing on systemctl suspend and optionally suspend after the operation is completed?
Operations example: archive extraction, rsync, ...
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Is there a way to schedule a lazy timer relative to another timer?
(x-mas.service)
[Unit]
Description=Celebrate X-Mas
[Service]
Type=simple
ExecStart=/usr/sbin/x-mas-day
[Install]
WantedBy=multi-user.target
(x-mas.timer)
[Unit]
Description=Add "X-Mas" to ...
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How to set default boot partition if I have two EFI partitions?
I dual boot Windows and Pop_OS!, and recently, Windows updated and screwed things up :(
I have two EFI partitions on one drive, one small (old) one that I previously used for Ubuntu/Windows, and a new ...
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5
answers
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Writing a systemd service to be executed at resume
my Dell laptop is subject to this bug with kernel 3.14. As a workaround I wrote a simple script
/usr/bin/brightness-fix:
#!/bin/bash
echo 0 > /sys/class/backlight/intel_backlight/brightnes
(and ...
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1
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How can I make auto-complete systemd unit names be case-insenstive?
Bash auto-complete helped immensely with the php-like naming conventions to systemd unit names. It completely solves the mix of Kebab-case, snake_case, camelCase.
But I still get frustrated with ...
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Login not chdir()ing to correct home directory (AD/realmd/sssd)
I'm forced (ugh) to join several linux machines to a domain. I'm currently using debian stable, and am joining the machines using a join script I wrote (at https://rbmj.github.io/join.sh for ...
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Howto reboot system after systemd unit started?
On Ubuntu 16 Xenial (systemd version 229) I have the following systemd service:
[Unit]
Description=Example unit
Documentation=man:apt(8)
ConditionACPower=true
After=apt-daily.service
[Service]
Type=...
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How to see full log from systemctl status service?
I check service status with systemctl status service-name.
By default, I see few rows only, so I add -n50 to see more.
Sometimes, I want to see full log, from start. It could have 1000s of rows.
Now,...
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0
answers
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why systemd --user termination triggers check on every other systemd --user process?
I've a debian host with hundreds of users. Each time a user logs out, the user termination process reports a run-user-<user-id>.mount: Succeeded for every user logged in the system, causing a ...
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4
answers
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Automatically enable systemd services installed using deb?
I'm building a bunch of services to install on my own (automatically created) servers. I'm migrating from upstart on Ubuntu 14.04, where services are enabled by default (we have to do extra work if we ...
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How to create rootfs for user mode Linux on Fedora 18?
I want to create a rootfs to be used with an UML kernel and be able to use the internet. I was using febootstrap with packages: bash, coreutils, net-tools, iputils. After using febootstrap-supermin-...
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0
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Disable hibernate until next reboot
I have a dedicated GPU on my laptop (Microsoft Surface Book 1) which is running nixos, with systemd. The GPU is detachable and power management is a bit of a mess. So I have a script that awakens the ...
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How do I reload a group of systemd services?
I want to reload (not restart!) a group of services upon an event.
For example, if I update my SSL certificates, I want every service that uses them reloaded (nginx and postfix come to mind). Neither ...
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Can I group a set of related systemd service files into a common directory under `/etc/systemd/system`?
The usual directory to place systemd unit files is
/etc/systemd/system/
It contains a number of service files by default.
If I have a number of related service files which are all part of the same ...
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How to disable LLMNR on Ubuntu 17.10
My understanding is that if I am using third party DNS (Google, etc.)
or DNS provided by my ISP (Comcast, etc.),
I do not need the LLMNR feature on.
I am attempting to disable it, but setting LLMNR=...
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2
answers
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Make OpenVPN restart upon new network connection on systemd
How would you go about making OpenVPN automatically restart upon connecting to a network?
The issue is that every time a network connection is lost, or if the computer is booted without a network ...
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0
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systemd-networkd client-identifier DHCP Server and client DUID assignment with B.A.T.M.A.N mesh
I have 3 Linux boxes running kernel 5.15 and systemd version 250.5+.
I have one of the boxes running as a B.A.T.M.A.N mesh master, with a DHCP Server managed by SystemD, and the other two are mesh ...
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How to enable DNS over HTTPS (DoH) on Pop!_OS 22.04
I recently started using Quad9 DNS and now want to enable DoH(not DoT). I was looking to enable it without any third party software (This is already possible on Windows). All the guides I can find are ...
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reboot via dbus-send without interaction?
trying to investigate why handbrake and kodi cannot shutdown or reboot my system, I narrowed the problem down to these "Interactive authentication required" messages:
% dbus-send --system --...
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systemd service restarting without any obvious cause
I have two Spring applications that chug along nicely, nothing special happening, and then out of the blue the applications restart; journalctl shows these lines:
Jan 15 04:43:11 nyota.softworks.nl ...
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Systemd logging to journal stops after service outputs very long lines
I have a process that outputs its logs to standard error, and I'm running it as a systemd service with Type=simple. I have left the StandardError and StandardOutput fields at their default values (...
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Executing ExecStopPost on reboot
How to configure the service correctly so that the command from ExecStopPost is executed when the OS is rebooted.
my.service
[Unit]
Description=my.service
After=syslog.target
After=network.target
...
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openvpn with systemd: reconnect
I'm using openvpn enabled as a service. It works well, but once I get assigned a new IP address or lose the connection, I can't access to the internet any more. Then I have to systemctl restart ...
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fstab and systemd automount overlay
On an embedded device based on Yocto Linux my rootfs is RO, while I have an additional partition for RW data. Now I want to automount at boot an overlay onto /etc stored on a different partition. Here ...
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Proper way to start a shell in single user mode under systemd?
What is the equivalent way to start a shell under systemd enabled system?
in sysinit/grub I would simply mount the root filesystem as rw and pass init=/bin/bash to the kernel, and optionally set it to ...
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D-bus monitoring does work from the command line, but not as a systemd service
I wrote a bash script reading SMS messages using the ModemManager, mostly with mmcli. It works fine from the command line, but not when started as a systemd service.
I quickly found out that this line ...
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X2Go: How to enable/disable
Documentation and various internet answers suggest x2goserver will have a service on systemd systems which can be started (or stopped, etc) with systemctl start x2goserver.
However, there is no such ...
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Kill systemd oneshot service after timeout
Is it possible to kill a oneshot service after a timeout?
Suppose a service is triggered periodically by a timer. The service typically takes 3 seconds to finish. However, your service is also buggy ...
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systemd & python logging
I wrote a simple python3 skript and want to make a service from it. Here are the two files
#!/bin/python3
while True:
print('True')
Systemd Service:
[Unit]
Description=True Service
[Service]
...
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1
answer
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Managing ordering dependencies between systemd template instances
Abstracted example:
I have two recurring tasks A and B that I want to setup as systemd services. As the tasks are quite similar to each other, I am using a template [email protected]; A and B will be ...
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High CPU Usage from systemd-udevd
I have a dell studio 1569 and just installed linux onto it. I noticed that the cpu has been running high due to systemd-udevd. Going though different posts on the web including this one, I used "...
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