diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 86 |
1 files changed, 84 insertions, 2 deletions
@@ -6,7 +6,8 @@ CHANGES WITH 232 in spe the user or group of a service when that service exits. * The new ProtectKernelModules= option can be used to disable explicit - load and unload operations of kernel modules by a service. + load and unload operations of kernel modules by a service. In + addition access to /usr/lib/modules is removed if this option is set. * ProtectSystem= option gained a new value "strict", which causes the whole file system tree with the exception of /dev, /proc, and /sys, @@ -229,6 +230,87 @@ CHANGES WITH 232 in spe running services in a race-free manner, and in particular collect information about exit statuses and results. + * The nss-resolve module has been changed to strictly return UNAVAIL + when communication via D-Bus with resolved failed, and NOTFOUND when + a lookup completed but was negative. This means it is now possible to + neatly configure fallbacks using nsswitch.conf result checking + expressions. Taking benefit of this, the new recommended + configuration line for the "hosts" entry in /etc/nsswitch.conf is: + + hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname + + * A new setting CtrlAltDelBurstAction= has been added to + /etc/systemd/system.conf which may be used to configure the precise + behaviour if the user on the console presses Ctrl-Alt-Del more often + than 7 times in 2s. Previously this would unconditionally result in + an expedited, immediate reboot. With this new setting the precise + operation may be configured in more detail, and also turned off + entirely. + + * In .netdev files two new settings RemoteChecksumTx= and + RemoteChecksumRx= are now understood that permit configuring the + remote checksumming logic for VXLAN networks. + + * The service manager learnt a new "invocation ID" concept for invoked + services. Each runtime cycle of a service will get a new invocation + ID (a 128bit random UUID) assigned that identifies the current + run of the service uniquely and globally. A new invocation ID + is generated each time a service starts up. The journal will store + the invocation ID of a service along with any logged messages, thus + making the invocation ID useful for matching the online runtime of a + service with the offline log data it generated in a safe way without + relying on synchronized timestamps. In many ways this new service + invocation ID concept is similar to the kernel's boot ID concept that + uniquely and globally identifies the runtime of each boot. The + invocation ID of a service is passed to the service itself via an + environment variable ($INVOCATION_ID). A new bus call + GetUnitByInvocationID() has been added that is similar to GetUnit() + but instead of retrieving the bus path for a unit by its name + retrieves it by its invocation ID. The returned path is valid only as + long as the passed invocation ID is current. + + * systemd-resolved gained a new "DNSStubListener" setting in + resolved.conf. It either takes a boolean value or the special values + "udp" and "tcp", and configures whether to enable the stub DNS + listener on 127.0.0.53:53. + + * IP addresses configured via networkd may now carry additional + configuration settings supported by the kernel. New options include: + HomeAddress=, DuplicateAddressDetection=, ManageTemporaryAddress=, + PrefixRoute=, AutoJoin=. + + * The PAM configuration fragment file for "user@.service" shipped with + systemd (i.e. the --user instance of systemd) has been stripped to + the minimum necessary to make the system boot. Previously, it + contained Fedora-specific stanzas that did not apply to other + distributions. It is expected that downstream distributions add + additional configuration lines, matching their needs to this file, + using it only as rough template of what systemd itself needs. Note + that this reduced fragment does not even include an invocation of + pam_limits which most distributions probably want to add, even though + systemd itself does not need it. (There's also the new build time + option --with-pamconfdir=no to disable installation of the PAM + fragment entirely.) + + * If PrivateDevices=yes is set for a service the CAP_SYS_RAWIO + capability is now also dropped from its set (in addition to + CAP_SYS_MKNOD as before). + + * In service unit files it is now possible to connect a specific named + file descriptor with stdin/stdout/stdout of an executed service. The + name may be specified in matching .socket units using the + FileDescriptorName= setting. + + * A number of journal settings may now be configured on the kernel + command line. Specifically, the following options are now understood: + systemd.journald.max_level_console=, + systemd.journald.max_level_store=, + systemd.journald.max_level_syslog=, systemd.journald.max_level_kmsg=, + systemd.journald.max_level_wall=. + + * "systemctl is-enabled --full" will now show by which symlinks a unit + file is enabled in the unit dependency tree. + CHANGES WITH 231: * In service units the various ExecXYZ= settings have been extended @@ -2106,7 +2188,7 @@ CHANGES WITH 219: files. * systemd now provides a way to store file descriptors - per-service in PID 1.This is useful for daemons to ensure + per-service in PID 1. This is useful for daemons to ensure that fds they require are not lost during a daemon restart. The fds are passed to the daemon on the next invocation in the same way socket activation fds are |