fedora-docs-l10n/fedora-system-administrat/f38/pages/servers/Configuring_NTP_Using_the_chrony_Suite

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	`ntpd` includes drivers for many reference clocks whereas `chronyd` relies on other programs, for example [application]gpsd, to access the data from the reference clocks.
	Choosing Between NTP Daemons	NTP 데몬 사이에서 선택하기
	[application]Chrony should be considered for all systems which are frequently suspended or otherwise intermittently disconnected and reconnected to a network. Mobile and virtual systems for example.
	The `NTP` daemon (`ntpd`) should be considered for systems which are normally kept permanently on. Systems which are required to use broadcast or multicast `IP`, or to perform authentication of packets with the `Autokey` protocol, should consider using `ntpd`. [application]Chrony only supports symmetric key authentication using a message authentication code (MAC) with MD5, SHA1 or stronger hash functions, whereas `ntpd` also supports the `Autokey` authentication protocol which can make use of the PKI system. `Autokey` is described in [citetitle]_RFC 5906_.
	Understanding chrony and Its Configuration	chrony와 이 구성 이해하기
	Understanding chronyd	chronyd 이해하기
	The [application]chrony daemon, `chronyd`, running in user space, makes adjustments to the system clock which is running in the kernel. It does this by consulting external time sources, using the `NTP` protocol, when ever network access allows it to do so. When external references are not available, `chronyd` will use the last calculated drift stored in the drift file. It can also be commanded manually to make corrections, by [application]chronyc.
	Understanding chronyc	chronyc 이해하기
	The [application]chrony daemon, `chronyd`, can be controlled by the command line utility [application]chronyc. This utility provides a command prompt which allows entering of a number of commands to make changes to `chronyd`. The default configuration is for `chronyd` to only accept commands from a local instance of [application]chronyc, but [application]chronyc can be used to alter the configuration so that `chronyd` will allow external control. [application]chronyc can be run remotely after first configuring `chronyd` to accept remote connections. The `IP` addresses allowed to connect to `chronyd` should be tightly controlled.
	Understanding the chrony Configuration Commands	chrony 구성 명령을 이해하기
	The default configuration file for `chronyd` is `/etc/chrony.conf`. The [option]`-f` option can be used to specify an alternate configuration file path. See the `chronyd` man page for further options. For a complete list of the directives that can be used see [citetitle]_link:++https://chrony-project.org/doc/4.4/chrony.conf.html++[https://chrony-project.org/doc/4.4/chrony.conf.html]_. Below is a selection of configuration options:
	Comments	주석
	Comments should be preceded by #, %, ; or !	주석 앞에는 y #, %, ; 또는 !
	allow	허용
	Optionally specify a host, subnet, or network from which to allow `NTP` connections to a machine acting as `NTP` server. The default is not to allow connections. Examples:
	[subs="quotes"]	[subs="quotes"]
	allow server1.example.com	allow server1.example.com
	Use this form to specify a particular host, by its host name, to be allowed access.	이와 같은 형식을 사용하여 접근이 허용된 호스트 이름으로 특정 호스트를 지정합니다.
	allow 192.0.2.0/24	allow 192.0.2.0/24
	Use this form to specify a particular network to be allowed access.	이와 같은 형식을 사용하여 접근을 허용 할 특정한 네트워크를 지정합니다.
	allow 2001:db8::/32	allow 2001:db8::/32
	Use this form to specify an `IPv6` address to be allowed access.	이와 같은 형식을 사용하여 접근을 허용 할 `IPv6` 주소를 지정합니다.
	cmdallow	cmdallow
	This is similar to the [command]#allow# directive (see section [command]#allow#), except that it allows control access (rather than `NTP` client access) to a particular subnet or host. (By "`control access`" is meant that [application]chronyc can be run on those hosts and successfully connect to `chronyd` on this computer.) The syntax is identical. There is also a [command]#cmddeny all# directive with similar behavior to the [command]#cmdallow all# directive.
	dumpdir	덤프디렉토리
	Path to the directory to save the measurement history across restarts of `chronyd` (assuming no changes are made to the system clock behavior whilst it is not running). If this capability is to be used (via the [command]#dumponexit# command in the configuration file, or the [command]#dump# command in [application]chronyc), the [command]#dumpdir# command should be used to define the directory where the measurement histories are saved.
	dumponexit	dumponexit
	If this command is present, it indicates that `chronyd` should save the measurement history for each of its time sources recorded whenever the program exits. (See the [command]#dumpdir# command above).
	local	로컬
	The [command]#local# keyword is used to allow `chronyd` to appear synchronized to real time from the viewpoint of clients polling it, even if it has no current synchronization source. This option is normally used on the "`master`" computer in an isolated network, where several computers are required to synchronize to one another, and the "`master`" is kept in line with real time by manual input.
	An example of the command is:	명령의 예는 다음과 같습니다:

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