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## SECTION=networking
# chrony configuration
menuconfig CHRONY
tristate
prompt "chrony "
select LIBC_M
select LIBCAP
select LIBSECCOMP if CHRONY_SECCOMP
select NETTLE if CHRONY_USE_NETTLE
select PPS_TOOLS if CHRONY_PPS_REFCLK
help
This will install the Chrony NTPD Daemon (chronyd)
Chrony is a pair of programs which are used to maintain
the accuracy of the system clock on a computer. The two
programs are called chronyd and chronyc .
Chronyd is a background (daemon) program, which can be
started at boot time, Chronyc provides a user interface
to chronyd for monitoring its performance and configuring
various settings.
See https://chrony.tuxfamily.org/ for details.
if CHRONY
config CHRONY_USE_NETTLE
bool
prompt "Use nettle crypto library"
help
Use nettle crypto library for stronger keys than MD5 in
NTP authentication.
config CHRONY_SECCOMP
bool
default y
prompt "Enable seccomp sandboxing"
help
Enables seccomp sandboxing to reduce the attack surface.
config CHRONY_ADVANCED_COMMAND
bool
prompt "Enable advanced monitoring command"
help
This allows getting advanced NTP time synchronization
status monitoring from the service.
config CHRONY_PPS_REFCLK
bool
prompt "Enable support for PPS devices"
help
Pulse per second devices signal the start of every second
with high precision.
comment "install options ---"
config CHRONY_INSTALL_CHRONY_COMMAND
bool
prompt "Install chrony command helper"
help
Install a command helper in /usr/bin/chrony_command,
which extracts the command access key from
/etc/chrony/chrony.keys and uses it to run
one given command. Note: The user needs access to
the chrony.keys file.
config CHRONY_INSTALL_CHRONY_STAT
bool
prompt "Install chrony statistics helper"
help
Install a convenience wrapper in /usr/bin/chrony_stat,
which gives a short overview for your configured time sources.
Usage /usr/bin/chrony_stat [ --full | --bool | --skew | --short-skew | --help ]
--full or no argument: show server name and verbose status
--bool show server name and
a) true, if timesource is currently synced
b) false otherwise
--skew show servername and
a) estimated error, if timesource is currently synced
b) false otherwise
--short-skew show estimated error, if timesource is currently synced
suppress all other servers
config CHRONY_INSTALL_CONFIG
bool
default y
prompt "Install chrony config files"
help
Install /etc/chrony/chrony.conf and /etc/chrony/chony.keys.
if CHRONY_INSTALL_CONFIG
config CHRONY_DEFAULT_ACCESS_KEY
string
prompt "setup default access key for chronyc"
default "undefined"
help
This will install a default access key with the
given content to the chrony.keys file. This is
used by /etc/init.d/chrony to access status
data, etc.
config CHRONY_DEFAULT_NTP_SERVER
string
prompt "setup default ntp peer"
default "10.1.1.2"
help
This will set the ntp server for simple
configurations.
endif
config CHRONY_STARTSCRIPT
bool
default y
depends on INITMETHOD_BBINIT
prompt "install /etc/init.d/chrony"
config CHRONY_SYSTEMD_UNIT
bool
default y
depends on INITMETHOD_SYSTEMD
prompt "install systemd unit files"
endif
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