How to start dhclient with systemd at startup? [SOLVED]

I have eth0 connected to DHCP server and want to use dhclient instead of dhcpcd. How can I start dhclient with systemd? Is there something similar to
systemctl enable dhcpcd@eth0
Last edited by mpelikan (2012-12-18 13:43:28)

dhcpcd comes in package with completed systemd unit (/usr/lib/systemd/system/dhcpcd.service and /usr/lib/systemd/system/[email protected]) by package developer, but dhclient doesn't.
mpelikan, you should write your own systemd unit for dhclient for yourself using
1) dhcpcd units as example
2) wiki page https://wiki.archlinux.org/index.php/Sy … vice_files
3) man page for dhclient to get the right options
Also I'm sure I saw somewhere an example of dhclient unit but I can't find it now. Anyway, it was not working out-of-box in Arch.
I've done this previously but then I've realized disadvantages of dhclient (so I've removed it).
Firstly, I didn't like how it's working in daemon-mode after some testing.
Secondly, it depends on deprecated net-tools.
You should try dhcpcd. If it doesn't work, you can make it work by editing configuration files / kernel options (like switching off IPv6 if you think you have an issues with it) or adding some parameters.

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Getting sasc-ng to work properly with systemd service files [SOLVED]

This thread is intended for getting the following AUR packages to work with each other with systemd service scripts:
https://aur.archlinux.org/packages/open-sasc-ng-dkms/
https://aur.archlinux.org/packages/open-sasc-ng/
https://aur.archlinux.org/packages/oscam-svn/ (this is a related package as it must properly execute prior to sasc-ng)
So my server is now on a fresh Arch install with systemd. All is well (& very fast) except I cannot get sasc-ng to function with systemd service init files. Prior to systemd the system worked fine with the rc initscripts & was very stable with the following setup:
rc.local
/etc/rc.d/oscam start
sleep 15
/etc/rc.d/sasc-ng start
sleep 4
/etc/rc.d/mythbackend start
/etc/conf.d/sasc-ng.conf
SASCNG_ARGS="-j 0:3 -j 1:4 -j 2:5" -b 16M --sid-allpid --sid-nocache --cam-budget"
DVBLOOPBACK_ARGS="num_adapters=3"
LOGDIR="/home/mythtv/logs/"
CAMDIR="/etc/camdir"
/etc/camdir/cardclient.conf
camd35:localhost:15050:1/0000/0000:mythtv:mythtv
I'll leave out the oscam stuff as that loads fine and doesn't appear to be a part of the problem
I've tried this with the systemd service file that comes with the open-sasc-ng-dkms package and when it was not sucessful I tried a bunch of variants including using "Type=simple" ect. "Type=Forked" seems to be only option that actually tries to start the processes. I also "hardcoded" the service files for the 2 sasc-ng components to find a few issues with the EnvironmentFile variables. The log variable has been removed for now as this seems to cause a fatal error but the rest of the variables load fine now. I also tested spliting up the DVB loopback module from the sasc-ng binary but this also gives similar results as the following script stands now. Running them manually with systemctl start commands doesn't make a difference but that is not surprising. The service file I'm fiddling with now which I feel has the best potential become working is:
sasc-ng.service
[Unit]
Description=Sasc-ng
After=oscam.service
[Service]
Type=forking
EnvironmentFile=/etc/conf.d/sasc-ng
ExecStartPre=/sbin/modprobe dvbloopback $DVBLOOPBACK_ARGS
TimeoutSec=2
ExecStart=/usr/sbin/sasc-ng -D $SASCNG_ARGS --cam-dir=$CAMDIR
TimeoutSec=4
[Install]
WantedBy=multi-user.target
Mythbackend always runs fine (even without DTV via sasc-ng) with the following mythbackend.service:
[Unit]
Description=MythTV_backend
After=sasc-ng.service
[Service]
Type=simple
Environment=MYTHCONFDIR=/etc/conf.d/mythbackend
Environment=HOME=/usr/share/mythtv
User=mythtv
ExecStart=/usr/bin/mythbackend --logpath /var/log/mythtv
[Install]
WantedBy=multi-user.target
oscam.service taken mostly from AUR package also seems fine. I added the TimeoutSec=15 to give time for oscam to load the SC and client protocol before moving on or else sasc-ng fails
Unit]
Description=An Open Source Conditional Access Module software
After=network.target
[Service]
Type=forking
EnvironmentFile=/etc/conf.d/oscam
ExecStart=/usr/bin/oscam $OSCAM_ARGS
TimeoutSec=15
[Install]
WantedBy=multi-user.target
Below is the output of the systemctl status commands. Despite the noise in the sasc-ng binary status, it is the loopback module that is " inactive (dead)" and there are no virtual DVB devices being created:
[mythtv@server ~]$ sudo systemctl status oscam.service
oscam.service - An Open Source Conditional Access Module software
Loaded: loaded (/usr/lib/systemd/system/oscam.service; enabled)
Active: active (running) since Tue, 2012-11-27 21:10:17 CET; 1min 7s ago
Process: 338 ExecStart=/usr/bin/oscam $OSCAM_ARGS (code=exited, status=0/SUCCESS)
Main PID: 377 (oscam)
CGroup: name=systemd:/system/oscam.service
├ 377 /usr/bin/oscam -b -c /etc/oscam
└ 378 /usr/bin/oscam -b -c /etc/oscam
Nov 27 21:10:17 server systemd[1]: Started An Open Source Conditional Acces...e.
[mythtv@server ~]$ sudo systemctl status loopback.service
loopback.service - Sasc-ng DVB Loopback Module
Loaded: loaded (/etc/systemd/system/loopback.service; enabled)
Active: inactive (dead) since Tue, 2012-11-27 21:10:28 CET; 1min 27s ago
Process: 907 ExecStart=/sbin/modprobe dvbloopback num_adapters=3 (code=exited, status=0/SUCCESS)
CGroup: name=systemd:/system/loopback.service
Nov 27 21:10:28 server systemd[1]: Started Sasc-ng DVB Loopback Module.
[mythtv@server ~]$ sudo systemctl status sasc-ng.service
sasc-ng.service - Sasc-ng
Loaded: loaded (/etc/systemd/system/sasc-ng.service; enabled)
Active: failed (Result: exit-code) since Tue, 2012-11-27 21:10:47 CET; 1min 45s ago
Process: 913 ExecStart=/usr/sbin/sasc-ng -D -j 0:3 -j 1:4 -j 2:5" -b 16M --sid-allpid --sid-nocache --cam-budget --cam-dir=/etc/camdir -l /home/mythtv/logs/sasc-ng.log (code=exited, status=0/SUCCESS)
Main PID: 921 (code=exited, status=255)
CGroup: name=systemd:/system/sasc-ng.service
Nov 27 21:10:39 server sasc-ng[921]: [921] [general.error] failed open /etc...ry
Nov 27 21:10:40 server sasc-ng[921]: [921] [general.error] failed open /etc...ry
Nov 27 21:10:40 server sasc-ng[921]: [921] [general.error] failed open /etc...ry
Nov 27 21:10:40 server sasc-ng[921]: [921] [general.info] loading cardclien...nf
Nov 27 21:10:42 server sasc-ng[921]: [1062] Netwatcher thread started (pid=...6)
Nov 27 21:10:42 server sasc-ng[921]: [921] [general.error] no keys loaded f...m!
Nov 27 21:10:46 server sasc-ng[921]: [1098] SC housekeeper thread started (...2)
Nov 27 21:10:47 server sasc-ng[921]: [1062] Netwatcher thread ended (pid=92...6)
Nov 27 21:10:47 server systemd[1]: sasc-ng.service: main process exited, co.../a
Nov 27 21:10:47 server systemd[1]: Unit sasc-ng.service entered failed state
[mythtv@server ~]$ sudo systemctl status sasc-ng.service
sasc-ng.service - Sasc-ng
Loaded: loaded (/etc/systemd/system/sasc-ng.service; enabled)
Active: failed (Result: exit-code) since Tue, 2012-11-27 21:10:47 CET; 2min 9s ago
Process: 913 ExecStart=/usr/sbin/sasc-ng -D -j 0:3 -j 1:4 -j 2:5" -b 16M --sid-allpid --sid-nocache --cam-budget --cam-dir=/etc/camdir -l /home/mythtv/logs/sasc-ng.log (code=exited, status=0/SUCCESS)
Main PID: 921 (code=exited, status=255)
CGroup: name=systemd:/system/sasc-ng.service
Nov 27 21:10:39 server sasc-ng[921]: [921] [general.error] failed open /etc/camdir/smartcard.conf: No such file or directory
Nov 27 21:10:40 server sasc-ng[921]: [921] [general.error] failed open /etc/camdir/cardslot.conf: No such file or directory
Nov 27 21:10:40 server sasc-ng[921]: [921] [general.error] failed open /etc/camdir/SoftCam.Key: No such file or directory
Nov 27 21:10:40 server sasc-ng[921]: [921] [general.info] loading cardclient config from /etc/camdir/cardclient.conf
Nov 27 21:10:42 server sasc-ng[921]: [1062] Netwatcher thread started (pid=921, tid=140074379712256)
Nov 27 21:10:42 server sasc-ng[921]: [921] [general.error] no keys loaded for softcam!
Nov 27 21:10:46 server sasc-ng[921]: [1098] SC housekeeper thread started (pid=921, tid=140074371319552)
Nov 27 21:10:47 server sasc-ng[921]: [1062] Netwatcher thread ended (pid=921, tid=140074379712256)
Nov 27 21:10:47 server systemd[1]: sasc-ng.service: main process exited, code=exited, status=255/n/a
Nov 27 21:10:47 server systemd[1]: Unit sasc-ng.service entered failed state
[mythtv@server ~]$
Any ideas?
Last edited by wdirksen (2012-12-10 19:54:43)

After some head scratching it seems to be all good now. Considering there have been no replies to this I've come to wonder if I might be the only one with this issue. I could get it working somewhat using service files but never ideal, ex. sasc-ng only using a few of the entitlements from oscam because it started too quick etc. Anyway this might help a few and I'm hoping the linux savvy who find what I'm writing here painfully newbie like or flawed will reply and educate me a bit if what's provided here needs some sharpening up:
1) Systemd was confusing the sasc-ng binary shorthand arguments with Linux init arguments and a few were misinterpreted if they were not nested into the environment specifiers. So the -l (log) was causing problems and -b (buffer) wasn't loading. To be safe I'm using only the sasc-ng longhand specifiers from now on (two "--" and more verbose) so that they can never be confused even if safely nested in an environment parameter. That means that /etc/conf.d/sasc-ng will also need to be changed to reflect this. I also decided to simplify the LOGFILE parameter to include the whole argument syntax.
2) Oscam.service needs to be initiated with oneshot and RemainAfterExit=yes to make sure the delay (15 seconds in my config) gets counted out before sasc-ng initiates.
[EDIT 12/12/2012: Initially I had a second TimeoutSec=2 after ExecStart in sasc-ng.service but this had no function. Turns out that it almost always does work without this delay but not always with my setup. Adding TimeoutSec=2 to mythbackend.service prior to ExecStart command does function and makes things init more consistant]
sasc-ng.service
[Unit]
Description=Sasc-ng
After=oscam.service
[Service]
Type=simple
EnvironmentFile=/etc/conf.d/sasc-ng
ExecStartPre=/sbin/modprobe dvbloopback $DVBLOOPBACK_ARGS
TimeoutSec=2
ExecStart=/usr/sbin/sasc-ng $SASCNG_ARGS --cam-dir $CAMDIR --log $LOGFILE
[Install]
WantedBy=multi-user.target
/etc/conf.d/sasc-ng
SASCNG_ARGS="--join 0:3 --join 1:4 --join 2:5 --buffer 16M --sid-allpid --sid-nocache --cam-budget"
DVBLOOPBACK_ARGS="num_adapters=3"
LOGFILE="/home/mythtv/logs/sasc-ng.log"
CAMDIR="/etc/camdir"
oscam.service
[Unit]
Description=An Open Source Conditional Access Module software
After=network.target
[Service]
Type=oneshot
EnvironmentFile=/etc/conf.d/oscam
ExecStart=/usr/bin/oscam $OSCAM_ARGS
TimeoutSec=15
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target
mythbackend.service
[Unit]
Description=MythTV_backend
After=sasc-ng.service
[Service]
Type=simple
TimeoutSec=2
Environment=MYTHCONFDIR=/etc/conf.d/mythbackend
Environment=HOME=/usr/share/mythtv
User=mythtv
ExecStart=/usr/bin/mythbackend --logpath /var/log/mythtv
[Install]
WantedBy=multi-user.target
I will make the related changes to the open-sasc-ng AUR package which I currently maintain
Last edited by wdirksen (2012-12-23 14:40:43)

How can I start Jack with systemd?

Hello everyone,
I switched to systemd and removed initscripts and sysvinit a while ago. I am using my computers for audio production, and I need both jack and pulseaudio.
I followed the directions in the wiki for JACK: A GUI-Based Setup and Pulseaudio will run through Jack -- as long as Jack starts first. Qjackctl is autostarted with KDE, but Pulseaudio starts up first. Therefore, once Jack starts, it disconnects Pulseaudio so only Jack programs output audio. The wiki recommends adding "sudo -u uname jack_start" to /etc/rc.local. However, I have already switched away from initscripts.
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Description=JACK
[Service]
ExecStart=/usr/bin/jack_control start
[Install]
WantedBy=multi-user.target
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Nov 23 12:01:58 silverstone jack_control[280]: File "/usr/bin/jack_control", line 336, in <module>
Nov 23 12:01:58 silverstone jack_control[280]: main()
Nov 23 12:01:58 silverstone jack_control[280]: File "/usr/bin/jack_control", line 132, in main
Nov 23 12:01:58 silverstone jack_control[280]: bus = dbus.SessionBus()
Nov 23 12:01:58 silverstone jack_control[280]: File "/usr/lib/python2.7/site-packages/dbus/_dbus.py", line 211, in __new__
Nov 23 12:01:58 silverstone jack_control[280]: mainloop=mainloop)
Nov 23 12:01:58 silverstone jack_control[280]: File "/usr/lib/python2.7/site-packages/dbus/_dbus.py", line 100, in __new__
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Nov 23 12:01:58 silverstone jack_control[280]: File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 122, in __new__
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Nov 23 12:02:01 silverstone pulseaudio[337]: [pulseaudio] module-jack-sink.c: JACK error >Cannot use real-time scheduling (RR/5)(1: Operation not permitted)<
Nov 23 12:02:01 silverstone pulseaudio[337]: [pulseaudio] module-jack-sink.c: JACK error >JackClient::AcquireSelfRealTime error<
Nov 23 12:02:01 silverstone pulseaudio[337]: [pulseaudio] module-jack-source.c: JACK error >Cannot use real-time scheduling (RR/5)(1: Operation not permitted)<
Nov 23 12:02:01 silverstone pulseaudio[337]: [pulseaudio] module-jack-source.c: JACK error >JackClient::AcquireSelfRealTime error<
Nov 23 12:02:01 silverstone pulseaudio[337]: [pulseaudio] main.c: Source jack_in does not exist.
Can anyone help me write a service file to start Jack?
Thanks,
Nicholas

Thanks for the hint tomk! From what I can understand systemd was starting Jack as root, but since Jack is pretty much a single-user program, it needs to be started by the user intending to use it. So it was throwing errors because I have no display set for root (I don't even know how to do that).
This explains why the wiki used sudo to start Jack. So I changed the service file to:
[Unit]
Description=JACK
[Service]
ExecStart=/usr/bin/sudo -u lion /usr/bin/jack_control start
[Install]
WantedBy=multi-user.target
lion is my username. There is no jack_start, I have to use jack_control start.
And it gives me:
Nov 23 22:21:35 silverstone sudo[289]: root : TTY=unknown ; PWD=/ ; USER=lion ; COMMAND=/usr/bin/jack_control start
Nov 23 22:21:36 silverstone sudo[289]: File "/usr/bin/jack_control", line 336, in <module>
Nov 23 22:21:36 silverstone sudo[289]: File "/usr/bin/jack_control", line 132, in main
Nov 23 22:21:36 silverstone systemd[1]: jack.service: main process exited, code=exited, status=1/FAILURE
Nov 23 22:21:36 silverstone systemd[1]: Unit jack.service entered failed state
Nov 23 22:21:38 silverstone pulseaudio[353]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket err = No such file or directory<
Nov 23 22:21:38 silverstone pulseaudio[353]: [pulseaudio] module-jack-sink.c: JACK error >Cannot connect to server socket<
Nov 23 22:21:39 silverstone pulseaudio[353]: [pulseaudio] module-jack-sink.c: JACK error >Cannot use real-time scheduling (RR/5)(1: Operation not permitted)<
Nov 23 22:21:39 silverstone pulseaudio[353]: [pulseaudio] module-jack-sink.c: JACK error >JackClient::AcquireSelfRealTime error<
Nov 23 22:21:39 silverstone pulseaudio[353]: [pulseaudio] module-jack-source.c: JACK error >Cannot use real-time scheduling (RR/5)(1: Operation not permitted)<
Nov 23 22:21:39 silverstone pulseaudio[353]: [pulseaudio] module-jack-source.c: JACK error >JackClient::AcquireSelfRealTime error<
Nov 23 22:21:39 silverstone pulseaudio[353]: [pulseaudio] main.c: Source jack_in does not exist.
However, the audio setup seems to be working fine. The only other idea I have is that Jack is becoming a dbus socket and makes systemd think it failed. But Pulseaudio is also claiming that it can't connect to jack., so I don't know whether it's working or not.
I saw a way to set up a .service file for dbus sockets but it required the dbus name of the program, which I don't know how to find.

How to start weblogic 8.1 at startup in Linux?

hello,
i am having weblogic 8.1 for Linux.
Our client wants that this server(weblogic) should start when machine is bootup
so no need for manually starting .
please tell me detailedway of how to do this and all commands in detail as i am
novice to Linux
waiting for your reply.
Thanks.
sejal

You can do that without going in the BIOS(UEFI). At the Start screen, type System Settings and hit Enter. There is a Boot Options tab there where you can make your boot choice. However, for when you do need to get in the BIOS in Windows 8.x, Shutdown the computer while holding down the Shift key. Then, on Startup, hold down or rapidly tap F2 while hitting the Power button.
Yes, you do have a Recovery partition on your HDD and you were advised to make recovery media when first using your machine for even further protection in the future. It's up to you whether you wish to make even further images. I do and I use Macrium also.
You need to spend some time with your User's Guide particularly starting on page 46 "Recovery of The Internal Storage Drive".
C.B.
Toshiba Sat. C75D-B7260 Win 8.1 64 Bit--Toshiba Sat. L775D-S7132 Win 7 HP SP1 64 Bit and Win 10 PRO Technical Preview--Toshiba Sat. L305-S5921 Win Vista SP2 32 Bit

How to replace Consolekit with systemd-loginctl

Is systemd's new multiseat ready to replace consolekit?
And if, how can I achieve that?
My Background:
- I use systemd as my init system
- login into a getty
- which create a new X session with startx through a login script
I have had a hard time before I had the right setup to supervise everything with *ck-launch-session* and *dbus-launch* (order matters).
And sometimes without a reason, something breaks and I'm not allowed to mount USB drives or shutdown as a user without a reboot.
Last edited by Mic92 (2012-06-01 13:36:59)

I do have a session:
┌─[jente @ lappy ~] 21:48:14
└─■ loginctl
SESSION UID USER SEAT
1 1000 jente seat0
1 sessions listed.
I start Udiskie through .xinitrc, like so:
if test -z "$DBUS_SESSION_BUS_ADDRESS" ; then
eval `dbus-launch --sh-syntax --exit-with-session`
fi
exec bash -c "udiskie & $HOME/.bin/dwm_start"
With .bin/dwm_start:
#!/bin/bash
while true; do
dwm >/dev/null 2>&1
done
EDIT: Here's udiskie's output when I plug in my external HD:
attempting to mount device /org/freedesktop/UDisks/devices/sdb2 (ext4:[])
failed to mount device /org/freedesktop/UDisks/devices/sdb2: org.freedesktop.UDisks.Error.PermissionDenied: Not Authorized
attempting to mount device /org/freedesktop/UDisks/devices/sdb1 (ntfs:[])
failed to mount device /org/freedesktop/UDisks/devices/sdb1: org.freedesktop.UDisks.Error.PermissionDenied: Not Authorized
EDIT2:
Changing my .xinitrc to the following didn't help either:
udiskie &
exec $HOME/.bin/dwm_start
Also, I found out I have to enter my root password to shutdown/reboot, whereas I didn't have to before.
Last edited by Unia (2012-09-05 19:55:23)

How to start dhclient with systemd at startup? [SOLVED]

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