I'm trying to list services on my CentOS image running in Docker using
systemctl list-units
but I get this error message:
Failed to get D-Bus connection: Operation not permitted
Any suggestions what the problem might be?
I'm creating a systemd .service file and I need help understanding the difference between Requires= and After=. The man page says that Requires= "Configures requirement dependencies on other units." and After= "Configures ordering dependencies between units." What's the difference?
Let's say I write a mine.service file. Then I use systemctl enable mine.service.
If I later decide to edit mine.service, do I have to tell systemd that mine.service was changed? If so, how do I do that?
There are many different places where systemd unit files may be placed. Is there a quick and easy way to ask systemd where it read a service’s declaration from, given just the service name?
I have an Arch Linux system with systemd and I've created my own service. The configuration service at /etc/systemd/system/myservice.service looks like this:
[Unit]
Description=My Daemon
[Service]
ExecStart=/bin/myforegroundcmd
[Install]
WantedBy=multi-user.target
Now I want to have an environment variable set for the /bin/myforegroundcmd. How do I do that?