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Diffstat (limited to 'network/chrony/README')
| -rw-r--r-- | network/chrony/README | 56 |
1 files changed, 29 insertions, 27 deletions
diff --git a/network/chrony/README b/network/chrony/README index 23bbc1c4ee..4d49d75ee5 100644 --- a/network/chrony/README +++ b/network/chrony/README @@ -1,43 +1,45 @@ -chrony is a versatile implementation of the Network Time Protocol (NTP). It -can synchronise the system clock with NTP servers, reference clocks (e.g. -GPS receiver), and manual input using wristwatch and keyboard. It can also -operate as an NTPv4 (RFC 5905) server and peer to provide a time service to -other computers in the network. +chrony is a versatile implementation of the Network Time Protocol +(NTP). It can synchronise the system clock with NTP servers, reference +clocks (e.g. GPS receiver), and manual input using wristwatch and +keyboard. It can also operate as an NTPv4 (RFC 5905) server and peer +to provide a time service to other computers in the network. It is designed to perform well in a wide range of conditions, including intermittent network connections, heavily congested networks, changing -temperatures (ordinary computer clocks are sensitive to temperature), and -systems that do not run continuously, or run on a virtual machine. +temperatures (ordinary computer clocks are sensitive to temperature), +and systems that do not run continuously, or run on a virtual machine. -Two programs are included in chrony, chronyd is a daemon that is started at -boot time and chronyc is a command-line interface program which can be used -to monitor chronyd's performance and to change various operating parameters -whilst it is running. +Two programs are included in chrony, chronyd is a daemon that is +started at boot time and chronyc is a command-line interface program +which can be used to monitor chronyd's performance and to change +various operating parameters whilst it is running. Note 1: You must have the 'chrony' group and user to run this script: $ groupadd -g 354 chrony $ useradd -u 354 -d /var/lib/chrony -s /bin/false -g chrony chrony -Feel free to use a different uid and gid if desired, but 354 is recommended -to avoid conflicts with other stuff from SlackBuilds.org. +Feel free to use a different uid and gid if desired, but 354 is +recommended to avoid conflicts with other stuff from SlackBuilds.org. Note 2: -If you are upgrading from previous version, where the daemon was running -under 'root' user as opposed to 'chrony' user, you need to ensure correct -permissions for /var/run/chrony directory and files under /var/lib/chrony -directory. +If you are upgrading from previous version, where the daemon was +running under 'root' user as opposed to 'chrony' user, you need to +ensure correct permissions for /var/run/chrony directory and files +under /var/lib/chrony directory. -If possible (i.e. you don't have any precious files there), before starting -the daemon, remove /var/run/chrony directory (cronyd will recreate it) and -remove files under /var/lib/chrony directory (cronyd will recreate them). +If possible (i.e. you don't have any precious files there), before +starting the daemon, remove /var/run/chrony directory (cronyd will +recreate it) and remove files under /var/lib/chrony directory (cronyd +will recreate them). Note 3: -The provided configuration file sets up chrony to operate in the most common -scenario, that is NTP client for synchronising local machine time with the -remote NTP server(s) time (using pool.ntp.org by default). See the man pages -for chronyd and chrony.conf (and the contrib and examples directories) for -more details on possible configuration options. +The provided configuration file sets up chrony to operate in the most +common scenario, that is NTP client for synchronising local machine +time with the remote NTP server(s) time (using pool.ntp.org by +default). See the man pages for chronyd and chrony.conf (and the +contrib and examples directories) for more details on possible +configuration options. Note 4: -The provided /etc/rc.d/rc.chrony script can be used to launch the daemon at -boot and to stop it at shutdown. +The provided /etc/rc.d/rc.chrony script can be used to launch the +daemon at boot and to stop it at shutdown. |