MAILING LIST:
http://lists.freedesktop.org/mailman/listinfo/systemd-devel
- http://lists.freedesktop.org/mailman/listinfo/systemd-commits
IRC:
#systemd on irc.freenode.org
- except src/udev/* which is (currently still) GPLv2, GPLv2+
REQUIREMENTS:
- Linux kernel >= 3.11
+ Linux kernel >= 3.12
Linux kernel >= 4.2 for unified cgroup hierarchy support
Kernel Config Options:
Note that systemd-localed.service and other systemd units use
PrivateNetwork and PrivateDevices so this is effectively required.
+ Required for PrivateUsers in service units:
+ CONFIG_USER_NS
+
Optional but strongly recommended:
CONFIG_IPV6
CONFIG_AUTOFS4_FS
CONFIG_TMPFS_XATTR
CONFIG_{TMPFS,EXT4,XFS,BTRFS_FS,...}_POSIX_ACL
CONFIG_SECCOMP
+ CONFIG_SECCOMP_FILTER (required for seccomp support)
CONFIG_CHECKPOINT_RESTORE (for the kcmp() syscall)
Required for CPUShares= in resource control unit settings
Required for CPUQuota= in resource control unit settings
CONFIG_CFS_BANDWIDTH
- For systemd-bootchart, several proc debug interfaces are required:
- CONFIG_SCHEDSTATS
- CONFIG_SCHED_DEBUG
-
For UEFI systems:
CONFIG_EFIVAR_FS
CONFIG_EFI_PARTITION
glibc >= 2.16
libcap
libmount >= 2.27.1 (from util-linux)
- libseccomp >= 1.0.0 (optional)
+ (util-linux *must* be built with --enable-libmount-force-mountinfo)
+ libseccomp >= 2.3.1 (optional)
libblkid >= 2.24 (from util-linux) (optional)
libkmod >= 15 (optional)
PAM >= 1.1.2 (optional)
util-linux >= v2.27.1 required
dbus >= 1.4.0 (strictly speaking optional, but recommended)
+ NOTE: If using dbus < 1.9.18, you should override the default
+ policy directory (--with-dbuspolicydir=/etc/dbus-1/system.d).
dracut (optional)
PolicyKit (optional)
under all circumstances. In fact, systemd-hostnamed will warn
if nss-myhostname is not installed.
+ Additional packages are necessary to run some tests:
+ - busybox (used by test/TEST-13-NSPAWN-SMOKE)
+ - nc (used by test/TEST-12-ISSUE-3171)
+ - python3-pyparsing
+ - python3-evdev (used by hwdb parsing tests)
+ - strace (used by test/test-functions)
+
USERS AND GROUPS:
Default udev rules use the following standard system group
names, which need to be resolvable by getgrnam() at any time,
Similarly, the name resolution daemon requires the
"systemd-resolve" system user and group to exist.
- Similarly, the kdbus dbus1 proxy daemon requires the
- "systemd-bus-proxy" system user and group to exist.
+ Similarly, the coredump support requires the
+ "systemd-coredump" system user and group to exist.
NSS:
- systemd ships with three NSS modules:
+ systemd ships with four glibc NSS modules:
nss-myhostname resolves the local hostname to locally
configured IP addresses, as well as "localhost" to
nss-resolve enables DNS resolution via the systemd-resolved
DNS/LLMNR caching stub resolver "systemd-resolved".
- nss-mymachines enables resolution of all local containers
- registered with machined to their respective IP addresses.
+ nss-mymachines enables resolution of all local containers registered
+ with machined to their respective IP addresses. It also maps UID/GIDs
+ ranges used by containers to useful names.
- To make use of these NSS modules, please add them to the
- "hosts: " line in /etc/nsswitch.conf. The "resolve" module
- should replace the glibc "dns" module in this file.
+ nss-systemd enables resolution of all dynamically allocated service
+ users. (See the DynamicUser= setting in unit files.)
- The three modules should be used in the following order:
+ To make use of these NSS modules, please add them to the "hosts:",
+ "passwd:" and "group:" lines in /etc/nsswitch.conf. The "resolve"
+ module should replace the glibc "dns" module in this file (and don't
+ worry, it chain-loads the "dns" module if it can't talk to resolved).
+ The four modules should be used in the following order:
+
+ passwd: compat mymachines systemd
+ group: compat mymachines systemd
hosts: files mymachines resolve myhostname
SYSV INIT.D SCRIPTS:
needs to look like, and provide an implementation at the marked places.
WARNINGS:
- systemd will freeze execution during boot if /etc/mtab exists
- but is not a symlink to /proc/mounts. Please ensure that
- /etc/mtab is a proper symlink.
-
systemd will warn you during boot if /usr is on a different
file system than /. While in systemd itself very little will
break if /usr is on a separate partition, many of its
servers if not specified otherwise at configure time. You
really should not ship an OS or device with this default
setting. See DISTRO_PORTING for details.
+
+ENGINEERING AND CONSULTING SERVICES:
+ Kinvolk (https://kinvolk.io) offers professional engineering
+ and consulting services for systemd. Please contact Chris Kühl
+ <chris@kinvolk.io> for more information.
projects / thirdparty / systemd.git / blobdiff