sysctl.d: default to fq_codel, fight bufferbloat

[elogind.git] / README

diff --git a/README b/README
index de159febbb33c41629e1b6322ac1bbc8aa308f77..e0edd41f176db91165047e107c2b0a0db0de4cc3 100644 (file)
--- a/README
+++ b/README
@@ -37,8 +37,7 @@ LICENSE:
         - except src/udev/* which is (currently still) GPLv2, GPLv2+
 
 REQUIREMENTS:
-        Linux kernel >= 3.0
-        Linux kernel >= 3.3 for loop device partition support features with nspawn
+        Linux kernel >= 3.7
         Linux kernel >= 3.8 for Smack support
 
         Kernel Config Options:
@@ -53,14 +52,14 @@ REQUIREMENTS:
           CONFIG_PROC_FS
           CONFIG_FHANDLE (libudev, mount and bind mount handling)
 
-        Udev will fail to work with the legacy layout:
+        udev will fail to work with the legacy sysfs layout:
           CONFIG_SYSFS_DEPRECATED=n
 
         Legacy hotplug slows down the system and confuses udev:
           CONFIG_UEVENT_HELPER_PATH=""
 
-        Userspace firmware loading is deprecated, will go away, and
-        sometimes causes problems:
+        Userspace firmware loading is not supported and should
+        be disabled in the kernel:
           CONFIG_FW_LOADER_USER_HELPER=n
 
         Some udev rules and virtualization detection relies on it:
@@ -115,13 +114,16 @@ REQUIREMENTS:
         libcryptsetup (optional)
         libaudit (optional)
         libacl (optional)
-        libattr (optional)
         libselinux (optional)
         liblzma (optional)
+        liblz4 >= 119 (optional)
         libgcrypt (optional)
         libqrencode (optional)
         libmicrohttpd (optional)
         libpython (optional)
+        libidn (optional)
+        gobject-introspection > 1.40.0 (optional)
+        elfutils >= 158 (optional)
         make, gcc, and similar tools
 
         During runtime, you need the following additional
@@ -187,18 +189,39 @@ USERS AND GROUPS:
         exist. During execution this network facing service will drop
         privileges and assume this uid/gid for security reasons.
 
-        Similar, the NTP daemon requires the "systemd-timesync" system
+        Similarly, the NTP daemon requires the "systemd-timesync" system
         user and group to exist.
 
-        Similar, the network management daemon requires the
+        Similarly, the network management daemon requires the
         "systemd-network" system user and group to exist.
 
-        Similar, the name resolution daemon requires the
+        Similarly, the name resolution daemon requires the
         "systemd-resolve" system user and group to exist.
 
-        Similar, the kdbus dbus1 proxy daemon requires the
+        Similarly, the kdbus dbus1 proxy daemon requires the
         "systemd-bus-proxy" system user and group to exist.
 
+NSS:
+        systemd ships with three NSS modules:
+
+        nss-myhostname resolves the local hostname to locally
+        configured IP addresses, as well as "localhost" to
+        127.0.0.1/::1.
+
+        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.
+
+        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.
+
+        The three modules should be used in the following order:
+
+                hosts: files mymachines resolve myhostname
+
 WARNINGS:
         systemd will warn you during boot if /etc/mtab is not a
         symlink to /proc/mounts. Please ensure that /etc/mtab is a