User:JMCF125/OpenRC
OpenRC is a service manager maintained by the Gentoo developers. OpenRC is dependency based and works with the system provided init program, normally SysVinit.
Installation
There are 2 conflicting ways of installing OpenRC. Both have packages with the exact name of openrc. apg's tries to mantain compatibility with systemd, while artoo's is more suited for those who would like to remove systemd entirely or use it only as a udev provider.
For details on init components, see Init.
apg
OpenRC and accompanying packages are available in the AUR.
Install either the openrcAUR or openrc-gitAUR package. openrc-sysvinitAUR or busybox are used as the init process. Service files are available from the openrc-arch-services-gitAUR package.
To maintain compability with initscripts-forkAUR, configuration files are installed to /etc/openrc/. The sysvinit init binary is installed to /usr/bin/init-openrc for compability with systemd-sysvcompat or similar packages.
artoo
This method uses packages in the unnoficial user repository openrc-eudev. The source PKGBUILDs of these repositories are at github.
Configuration files are installed to /etc, similar to Gentoo.
A guide is available at [1].
Booting
apg
For booting with OpenRC add init=/usr/bin/init-openrc to the kernel parameters. To switch back to systemd, remove the parameter again.
The /etc/openrc/conf.d directory, and the /etc/openrc/rc.d file is used for configuration.
artoo
OpenRC is booted by default. To boot with systemd, add init=/usr/lib/systemd/systemd to the kernel line in your bootloader configuration.
The /etc/conf.d directory is used for configuration.
Configuration
/etc/openrc for apg, /etc for artoo.For general information on configuring OpenRC, see:
For more information specific to Arch Linux, refer to [2].
Preparation
See Init#Configuration.
Services
OpenRC services are enabled by issuing rc-update add service_name runlevel as root. It is recommended to at least enable the following services:
| Service name | Runlevel | Description |
|---|---|---|
| udev | sysinit | Device hot-plugging |
| alsa | default | ALSA state |
| acpid | default | ACPI events |
| dbus | default | Messaging bus |
| dcron | default | Scheduling |
| syslog-ng | default | System logs |
See also Native services and Daemons.
Network
See Network configuration for a detailed look at networking in general.
apg
The network is configured through newnet. Modify the /etc/openrc/conf.d/network file; both the ip (iproute2) and the ifconfig (net-tools) commands are supported. Below is an example configuration using ip.
ip_eth0="192.168.1.2/24" defaultiproute="via 192.168.1.1" ifup_eth0="ip link set \$int mtu 1500"
The network service is added to the boot runlevel by default, so no further action is required. See Network configuration for general networking information.
wpa_actiond). You could consult the official documentation or old wiki documentation (be aware of consulting version later than 2012-05-13)artoo
For network configuration, look at the /etc/conf.d/net file. By default it uses netifrc, which defaults to dhcpcd if not specified differently in /etc/conf.d/net
The dhcpcd-openrc package provides a specific dhcpcd script, not to be confused with netifrc default. It will start /etc/init.d/dhcpcd
To use a static route you need to create a symlink of net.lo that reflects your device's name:
ln -s /etc/init.d/net.lo /etc/init.d/net.eth0
See an article in the Gentoo Handbook for details.
For having a graphical network manager, networkmanager-openrc' can be installed. Other options are available, such as connman-openrc.
Boot logs
To enable boot logging, uncomment the rc_logger="YES" line in rcdir/rc.conf. When enabled, boot logs are stored in /var/log/rc.log. artoo enables it by default.
Hostname
OpenRC sets the hostname from rcdir/conf.d/hostname. The file looks as follows:
# Set to the hostname of this machine hostname="myhostname"
Kernel modules
OpenRC uses rcdir/conf.d/modules instead of /etc/modules-load.d. For example:
/etc/openrc/conf.d/modules
# You should consult your kernel documentation and configuration # for a list of modules and their options. modules="vboxdrv acpi_cpufreq"
Locale
Keyboard layout can be configured via rcdir/conf.d/keymaps and rcdir/conf.d/consolefont. You can also configure the settings through the /etc/locale.conf file, which is sourced via /etc/profile.d/locale.sh.
See [4] and Locale for details.
Troubleshooting
Error while unmounting /tmp
When shutting the system down, you might get an error message such as
* Unmounting /tmp ... * in use but fuser finds nothing [ !! ]
This can be fixed by adding
no_umounts="/tmp"
to rcdir/conf.d/localmount
Disabling IPv6 does not work
One option is to add:
# Disable ipv6 net.ipv6.conf.all.disable_ipv6 = 1
in a file with a .conf extension under rcdir/sysctl.d
During shutdown remounting root as read-only fails
If the above happens, edit the /etc/openrc/init.d/mount-ro file and put:
telinit u
after the following line:
# Flush all pending disk writes now sync; sync
/etc/sysctl.conf not found
By default, sysctl --system is called to load the sysctl configuration. [5] This includes the /etc/sysctl.conf file, which was removed from Arch. [6]
To prevent a missing file error, create the file:
# touch /etc/sysctl.conf
Using OpenRC with a desktop environment
If using OpenRC with a desktop environment, ConsoleKit may help. Install the service to rcdir/init.d, and enable it:
# rc-update add consolekit default
See ConsoleKit for more information.