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authorChristian Breunig <christian@poessinger.com>2023-01-15 07:59:21 +0100
committerGitHub <noreply@github.com>2023-01-15 07:59:21 +0100
commit191e73e1d69bc844be8e06531f23f1af6666d36f (patch)
treeed45267be1bc83b74f08931850c7dcff2cdb7abc /docs/configuration/system
parentb2a2b3bc35e124d4fb5e5b778cfd9de2b806e29e (diff)
parenta499724dbb82dbe7eae50b2c96f4460490ed93bb (diff)
downloadvyos-documentation-191e73e1d69bc844be8e06531f23f1af6666d36f.tar.gz
vyos-documentation-191e73e1d69bc844be8e06531f23f1af6666d36f.zip
Merge pull request #923 from vyos/t3008-chrony
ntp: T3008: migrate from ntpd to chrony
Diffstat (limited to 'docs/configuration/system')
-rw-r--r--docs/configuration/system/index.rst1
-rw-r--r--docs/configuration/system/ntp.rst77
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diff --git a/docs/configuration/system/index.rst b/docs/configuration/system/index.rst
index 5bf781af..363c6141 100644
--- a/docs/configuration/system/index.rst
+++ b/docs/configuration/system/index.rst
@@ -17,7 +17,6 @@ System
lcd
login
name-server
- ntp
option
proxy
syslog
diff --git a/docs/configuration/system/ntp.rst b/docs/configuration/system/ntp.rst
deleted file mode 100644
index 223447f5..00000000
--- a/docs/configuration/system/ntp.rst
+++ /dev/null
@@ -1,77 +0,0 @@
-.. _ntp:
-
-###
-NTP
-###
-
-:abbr:`NTP (Network Time Protocol`) is a networking protocol for clock
-synchronization between computer systems over packet-switched, variable-latency
-data networks. In operation since before 1985, NTP is one of the oldest Internet
-protocols in current use.
-
-NTP is intended to synchronize all participating computers to within a few
-milliseconds of :abbr:`UTC (Coordinated Universal Time)`. It uses the
-intersection algorithm, a modified version of Marzullo's algorithm, to select
-accurate time servers and is designed to mitigate the effects of variable
-network latency. NTP can usually maintain time to within tens of milliseconds
-over the public Internet, and can achieve better than one millisecond accuracy
-in local area networks under ideal conditions. Asymmetric routes and network
-congestion can cause errors of 100 ms or more.
-
-The protocol is usually described in terms of a client-server model, but can as
-easily be used in peer-to-peer relationships where both peers consider the other
-to be a potential time source. Implementations send and receive timestamps using
-:abbr:`UDP (User Datagram Protocol)` on port number 123.
-
-NTP supplies a warning of any impending leap second adjustment, but no
-information about local time zones or daylight saving time is transmitted.
-
-The current protocol is version 4 (NTPv4), which is a proposed standard as
-documented in :rfc:`5905`. It is backward compatible with version 3, specified
-in :rfc:`1305`.
-
-Configuration
-=============
-
-.. cfgcmd:: set system ntp server <address>
-
- Configure one or more servers for synchronisation. Server name can be either
- an IP address or :abbr:`FQDN (Fully Qualified Domain Name)`.
-
- There are 3 default NTP server set. You are able to change them.
-
- * ``0.pool.ntp.org``
- * ``1.pool.ntp.org``
- * ``2.pool.ntp.org``
-
-.. cfgcmd:: set system ntp server <address> <noselect | pool | preempt | prefer>
-
- Configure one or more attributes to the given NTP server.
-
- * ``noselect`` marks the server as unused, except for display purposes. The
- server is discarded by the selection algorithm.
-
- * ``pool`` mobilizes persistent client mode association with a number of
- remote servers.
-
- * ``preempt`` a preemptable association is expendable.
-
- * ``prefer`` marks the server as preferred. All other things being equal,
- this host will be chosen for synchronization among a set of correctly
- operating hosts.
-
-.. cfgcmd:: set system ntp listen-address <address>
-
- NTP process will only listen on the specified IP address. You must specify
- the `<address>` and optionally the permitted clients. Multiple listen
- addresses can be configured.
-
-.. cfgcmd:: set system ntp allow-clients address <address>
-
- List of networks or client addresses permitted to contact this NTP server.
-
- Multiple networks can be configured.
-
-.. cfgcmd:: set system ntp vrf <name>
-
- Specify name of the :abbr:`VRF (Virtual Routing and Forwarding)` instance.