| New in version 4.2 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for NTPv4 extension field improving synchronisation |
| stability and resolution of root delay and dispersion (experimental) |
| * Add support for NTP over PTP (experimental) |
| * Add support for AES-CMAC and hash functions in GnuTLS |
| * Improve server interleaved mode to be more reliable and support |
| multiple clients behind NAT |
| * Update seccomp filter |
| * Add statistics about interleaved mode to serverstats report |
| |
| Bug fixes |
| --------- |
| * Fix RTC support with 64-bit time_t on 32-bit Linux |
| * Fix seccomp filter to work correctly with bind*device directives |
| * Suppress kernel adjustments of system clock (dosynctodr) on illumos |
| |
| Other changes |
| ------------- |
| * Switch Solaris support to illumos |
| |
| New in version 4.1 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for NTS servers specified by IP address (matching |
| Subject Alternative Name in server certificate) |
| * Add source-specific configuration of trusted certificates |
| * Allow multiple files and directories with trusted certificates |
| * Allow multiple pairs of server keys and certificates |
| * Add copy option to server/pool directive |
| * Increase PPS lock limit to 40% of pulse interval |
| * Perform source selection immediately after loading dump files |
| * Reload dump files for addresses negotiated by NTS-KE server |
| * Update seccomp filter and add less restrictive level |
| * Restart ongoing name resolution on online command |
| |
| Bug fixes |
| --------- |
| * Fix responding to IPv4 command requests on FreeBSD |
| * Fix dump files to not include uncorrected offset |
| * Fix initstepslew to accept time from own NTP clients |
| * Reset NTP address and port when no longer negotiated by NTS-KE server |
| |
| New in version 4.0 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for Network Time Security (NTS) authentication |
| * Add support for AES-CMAC keys (AES128, AES256) with Nettle |
| * Add authselectmode directive to control selection of unauthenticated sources |
| * Add binddevice, bindacqdevice, bindcmddevice directives |
| * Add confdir directive to better support fragmented configuration |
| * Add sourcedir directive and "reload sources" command to support dynamic |
| NTP sources specified in files |
| * Add clockprecision directive |
| * Add dscp directive to set Differentiated Services Code Point (DSCP) |
| * Add -L option to limit log messages by severity |
| * Add -p option to print whole configuration with included files |
| * Add -U option to allow start under non-root user |
| * Allow maxsamples to be set to 1 for faster update with -q/-Q option |
| * Avoid replacing NTP sources with sources that have unreachable address |
| * Improve pools to repeat name resolution to get "maxsources" sources |
| * Improve source selection with trusted sources |
| * Improve NTP loop test to prevent synchronisation to itself |
| * Repeat iburst when NTP source is switched from offline state to online |
| * Update clock synchronisation status and leap status more frequently |
| * Update seccomp filter |
| * Add "add pool" command |
| * Add "reset sources" command to drop all measurements |
| * Add authdata command to print details about NTP authentication |
| * Add selectdata command to print details about source selection |
| * Add -N option and sourcename command to print original names of sources |
| * Add -a option to some commands to print also unresolved sources |
| * Add -k, -p, -r options to clients command to select, limit, reset data |
| |
| Bug fixes |
| --------- |
| * Don't set interface for NTP responses to allow asymmetric routing |
| * Handle RTCs that don't support interrupts |
| * Respond to command requests with correct address on multihomed hosts |
| |
| Removed features |
| ---------------- |
| * Drop support for RIPEMD keys (RMD128, RMD160, RMD256, RMD320) |
| * Drop support for long (non-standard) MACs in NTPv4 packets (chrony 2.x |
| clients using non-MD5/SHA1 keys need to use option "version 3") |
| * Drop support for line editing with GNU Readline |
| |
| New in version 3.5.1 |
| ==================== |
| |
| Security fixes |
| -------------- |
| * Create new file when writing pidfile (CVE-2020-14367) |
| |
| New in version 3.5 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for more accurate reading of PHC on Linux 5.0 |
| * Add support for hardware timestamping on interfaces with read-only |
| timestamping configuration |
| * Add support for memory locking and real-time priority on FreeBSD, |
| NetBSD, Solaris |
| * Update seccomp filter to work on more architectures |
| * Validate refclock driver options |
| |
| Bug fixes |
| --------- |
| * Fix bindaddress directive on FreeBSD |
| * Fix transposition of hardware RX timestamp on Linux 4.13 and later |
| * Fix building on non-glibc systems |
| |
| New in version 3.4 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add filter option to server/pool/peer directive |
| * Add minsamples and maxsamples options to hwtimestamp directive |
| * Add support for faster frequency adjustments in Linux 4.19 |
| * Change default pidfile to /var/run/chrony/chronyd.pid to allow |
| chronyd without root privileges to remove it on exit |
| * Disable sub-second polling intervals for distant NTP sources |
| * Extend range of supported sub-second polling intervals |
| * Get/set IPv4 destination/source address of NTP packets on FreeBSD |
| * Make burst options and command useful with short polling intervals |
| * Modify auto_offline option to activate when sending request failed |
| * Respond from interface that received NTP request if possible |
| * Add onoffline command to switch between online and offline state |
| according to current system network configuration |
| * Improve example NetworkManager dispatcher script |
| |
| Bug fixes |
| --------- |
| * Avoid waiting in Linux getrandom system call |
| * Fix PPS support on FreeBSD and NetBSD |
| |
| New in version 3.3 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add burst option to server/pool directive |
| * Add stratum and tai options to refclock directive |
| * Add support for Nettle crypto library |
| * Add workaround for missing kernel receive timestamps on Linux |
| * Wait for late hardware transmit timestamps |
| * Improve source selection with unreachable sources |
| * Improve protection against replay attacks on symmetric mode |
| * Allow PHC refclock to use socket in /var/run/chrony |
| * Add shutdown command to stop chronyd |
| * Simplify format of response to manual list command |
| * Improve handling of unknown responses in chronyc |
| |
| Bug fixes |
| --------- |
| * Respond to NTPv1 client requests with zero mode |
| * Fix -x option to not require CAP_SYS_TIME under non-root user |
| * Fix acquisitionport directive to work with privilege separation |
| * Fix handling of socket errors on Linux to avoid high CPU usage |
| * Fix chronyc to not get stuck in infinite loop after clock step |
| |
| New in version 3.2 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Improve stability with NTP sources and reference clocks |
| * Improve stability with hardware timestamping |
| * Improve support for NTP interleaved modes |
| * Control frequency of system clock on macOS 10.13 and later |
| * Set TAI-UTC offset of system clock with leapsectz directive |
| * Minimise data in client requests to improve privacy |
| * Allow transmit-only hardware timestamping |
| * Add support for new timestamping options introduced in Linux 4.13 |
| * Add root delay, root dispersion and maximum error to tracking log |
| * Add mindelay and asymmetry options to server/peer/pool directive |
| * Add extpps option to PHC refclock to timestamp external PPS signal |
| * Add pps option to refclock directive to treat any refclock as PPS |
| * Add width option to refclock directive to filter wrong pulse edges |
| * Add rxfilter option to hwtimestamp directive |
| * Add -x option to disable control of system clock |
| * Add -l option to log to specified file instead of syslog |
| * Allow multiple command-line options to be specified together |
| * Allow starting without root privileges with -Q option |
| * Update seccomp filter for new glibc versions |
| * Dump history on exit by default with dumpdir directive |
| * Use hardening compiler options by default |
| |
| Bug fixes |
| --------- |
| * Don't drop PHC samples with low-resolution system clock |
| * Ignore outliers in PHC tracking, RTC tracking, manual input |
| * Increase polling interval when peer is not responding |
| * Exit with error message when include directive fails |
| * Don't allow slash after hostname in allow/deny directive/command |
| * Try to connect to all addresses in chronyc before giving up |
| |
| New in version 3.1 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for precise cross timestamping of PHC on Linux |
| * Add minpoll, precision, nocrossts options to hwtimestamp directive |
| * Add rawmeasurements option to log directive and modify measurements |
| option to log only valid measurements from synchronised sources |
| * Allow sub-second polling interval with NTP sources |
| |
| Bug fixes |
| --------- |
| * Fix time smoothing in interleaved mode |
| |
| New in version 3.0 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for software and hardware timestamping on Linux |
| * Add support for client/server and symmetric interleaved modes |
| * Add support for MS-SNTP authentication in Samba |
| * Add support for truncated MACs in NTPv4 packets |
| * Estimate and correct for asymmetric network jitter |
| * Increase default minsamples and polltarget to improve stability |
| with very low jitter |
| * Add maxjitter directive to limit source selection by jitter |
| * Add offset option to server/pool/peer directive |
| * Add maxlockage option to refclock directive |
| * Add -t option to chronyd to exit after specified time |
| * Add partial protection against replay attacks on symmetric mode |
| * Don't reset polling interval when switching sources to online state |
| * Allow rate limiting with very short intervals |
| * Improve maximum server throughput on Linux and NetBSD |
| * Remove dump files after start |
| * Add tab-completion to chronyc with libedit/readline |
| * Add ntpdata command to print details about NTP measurements |
| * Allow all source options to be set in add server/peer command |
| * Indicate truncated addresses/hostnames in chronyc output |
| * Print reference IDs as hexadecimal numbers to avoid confusion with |
| IPv4 addresses |
| |
| Bug fixes |
| --------- |
| * Fix crash with disabled asynchronous name resolving |
| |
| New in version 2.4.1 |
| ==================== |
| |
| Bug fixes |
| --------- |
| * Fix processing of kernel timestamps on non-Linux systems |
| * Fix crash with smoothtime directive |
| * Fix validation of refclock sample times |
| * Fix parsing of refclock directive |
| |
| New in version 2.4 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add orphan option to local directive for orphan mode compatible with ntpd |
| * Add distance option to local directive to set activation threshold |
| (1 second by default) |
| * Add maxdrift directive to set maximum allowed drift of system clock |
| * Try to replace NTP sources exceeding maximum distance |
| * Randomise source replacement to avoid getting stuck with bad sources |
| * Randomise selection of sources from pools on start |
| * Ignore reference timestamp as ntpd doesn't always set it correctly |
| * Modify tracking report to use same values as seen by NTP clients |
| * Add -c option to chronyc to write reports in CSV format |
| * Provide detailed manual pages |
| |
| Bug fixes |
| --------- |
| * Fix SOCK refclock to work correctly when not specified as last refclock |
| * Fix initstepslew and -q/-Q options to accept time from own NTP clients |
| * Fix authentication with keys using 512-bit hash functions |
| * Fix crash on exit when multiple signals are received |
| * Fix conversion of very small floating-point numbers in command packets |
| |
| Removed features |
| ---------------- |
| * Drop documentation in Texinfo format |
| |
| New in version 2.3 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for NTP and command response rate limiting |
| * Add support for dropping root privileges on Mac OS X, FreeBSD, Solaris |
| * Add require and trust options for source selection |
| * Enable logchange by default (1 second threshold) |
| * Set RTC on Mac OS X with rtcsync directive |
| * Allow binding to NTP port after dropping root privileges on NetBSD |
| * Drop CAP_NET_BIND_SERVICE capability on Linux when NTP port is disabled |
| * Resolve names in separate process when seccomp filter is enabled |
| * Replace old records in client log when memory limit is reached |
| * Don't reveal local time and synchronisation state in client packets |
| * Don't keep client sockets open for longer than necessary |
| * Ignore poll in KoD RATE packets as ntpd doesn't always set it correctly |
| * Warn when using keys shorter than 80 bits |
| * Add keygen command to generate random keys easily |
| * Add serverstats command to report NTP and command packet statistics |
| |
| Bug fixes |
| --------- |
| * Fix clock correction after making step on Mac OS X |
| * Fix building on Solaris |
| |
| New in version 2.2.1 |
| ==================== |
| |
| Security fixes |
| -------------- |
| * Restrict authentication of NTP server/peer to specified key (CVE-2016-1567) |
| |
| New in version 2.2 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for configuration and monitoring over Unix domain socket |
| (accessible by root or chrony user when root privileges are dropped) |
| * Add support for system call filtering with seccomp on Linux (experimental) |
| * Add support for dropping root privileges on NetBSD |
| * Control frequency of system clock on FreeBSD, NetBSD, Solaris |
| * Add system leap second handling mode on FreeBSD, NetBSD, Solaris |
| * Add dynamic drift removal on Mac OS X |
| * Add support for setting real-time priority on Mac OS X |
| * Add maxdistance directive to limit source selection by root distance |
| (3 seconds by default) |
| * Add refresh command to get new addresses of NTP sources |
| * Allow wildcard patterns in include directive |
| * Restore time from driftfile with -s option if later than RTC time |
| * Add configure option to set default hwclockfile |
| * Add -d option to chronyc to enable debug messages |
| * Allow multiple addresses to be specified for chronyc with -h option |
| and reconnect when no valid reply is received |
| * Make check interval in waitsync command configurable |
| |
| Bug fixes |
| --------- |
| * Fix building on NetBSD, Solaris |
| * Restore time from driftfile with -s option if reading RTC failed |
| |
| Removed features |
| ---------------- |
| * Drop support for authentication with command key (run-time configuration |
| is now allowed only for local users that can access the Unix domain socket) |
| |
| New in version 2.1.1 |
| ==================== |
| |
| Bug fixes |
| --------- |
| * Fix clock stepping by integer number of seconds on Linux |
| |
| New in version 2.1 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Add support for Mac OS X |
| * Try to replace unreachable and falseticker servers/peers specified |
| by name like pool sources |
| * Add leaponly option to smoothtime directive to allow synchronised |
| leap smear between multiple servers |
| * Use specific reference ID when smoothing served time |
| * Add smoothing command to report time smoothing status |
| * Add smoothtime command to activate or reset time smoothing |
| |
| Bug fixes |
| --------- |
| * Fix crash in source selection with preferred sources |
| * Fix resetting of time smoothing |
| * Include packet precision in peer dispersion |
| * Fix crash in chronyc on invalid command syntax |
| |
| New in version 2.0 |
| ================== |
| |
| Enhancements |
| ------------ |
| * Update to NTP version 4 (RFC 5905) |
| * Add pool directive to specify pool of NTP servers |
| * Add leapsecmode directive to select how to correct clock for leap second |
| * Add smoothtime directive to smooth served time and enable leap smear |
| * Add minsources directive to set required number of selectable sources |
| * Add minsamples and maxsamples options for all sources |
| * Add tempcomp configuration with list of points |
| * Allow unlimited number of NTP sources, refclocks and keys |
| * Allow unreachable sources to remain selected |
| * Improve source selection |
| * Handle offline sources as unreachable |
| * Open NTP server port only when necessary (client access is allowed by |
| allow directive/command or peer/broadcast is configured) |
| * Change default bindcmdaddress to loopback address |
| * Change default maxdelay to 3 seconds |
| * Change default stratumweight to 0.001 |
| * Update adjtimex synchronisation status |
| * Use system headers for adjtimex |
| * Check for memory allocation errors |
| * Reduce memory usage |
| * Add configure options to compile without NTP, cmdmon, refclock support |
| * Extend makestep command to set automatic clock stepping |
| |
| Bug fixes |
| --------- |
| * Add sanity checks for time and frequency offset |
| * Don't report synchronised status during leap second |
| * Don't combine reference clocks with close NTP sources |
| * Fix accepting requests from configured sources |
| * Fix initial fallback drift setting |
| |
| New in version 1.31.1 |
| ===================== |
| |
| Security fixes |
| -------------- |
| * Protect authenticated symmetric NTP associations against DoS attacks |
| (CVE-2015-1853) |
| * Fix access configuration with subnet size indivisible by 4 (CVE-2015-1821) |
| * Fix initialization of reply slots for authenticated commands (CVE-2015-1822) |
| |
| New in version 1.31 |
| =================== |
| |
| Enhancements |
| ------------ |
| * Support operation in other NTP eras (next era begins in 2036), |
| NTP time is mapped to [-50, +86] years around build date by default |
| * Restore time from driftfile with -s when RTC is missing/unsupported |
| * Close connected client sockets when not waiting for reply |
| * Use one client socket with random port when acquisitionport is 0 |
| * Use NTP packets instead of UDP echo for presend |
| * Don't adjust polling interval when sending fails |
| * Allow binding to addresses that don't exist yet |
| * Ignore measurements around leap second |
| * Improve detection of unexpected time jumps |
| * Include example of logrotate configuration, systemd services and |
| NetworkManager dispatcher script |
| |
| Bug fixes |
| --------- |
| * Reconnect client sockets for each request to follow changes |
| in network configuration automatically |
| * Restart timer when polling interval is changed on reset |
| |
| New in version 1.30 |
| =================== |
| |
| Enhancements |
| ------------ |
| * Add asynchronous name resolving with POSIX threads |
| * Add PTP hardware clock (PHC) refclock driver |
| * Add new generic clock driver to slew by adjusting frequency only |
| (without kernel PLL or adjtime) and use it on Linux |
| * Add rtcautotrim directive to trim RTC automatically |
| * Add hwclockfile directive to share RTC LOCAL/UTC setting with hwclock |
| * Add maxslewrate directive to set maximum allowed slew rate |
| * Add maxdispersion option for refclocks |
| * Add -q/-Q options to set clock/print offset once and exit |
| * Allow directives to be specified on chronyd command line |
| * Replace frequency scaling in Linux driver with retaining of tick |
| * Try to detect unexpected forward time jumps and reset state |
| * Exit with non-zero code when maxchange limit is reached |
| * Improve makestep to not start and stop slew unnecessarily |
| * Change default corrtimeratio to 3.0 to improve frequency accuracy |
| * Announce leap second only on last day of June and December |
| * Use separate connected client sockets for each NTP server |
| * Remove separate NTP implementation used for initstepslew |
| * Limit maximum minpoll set by KoD RATE to default maxpoll |
| * Don't send NTP requests with unknown key |
| * Print warning when source is added with unknown key |
| * Take leap second in PPS refclock from locked source |
| * Make reading of RTC for initial trim more reliable |
| * Don't create cmdmon sockets when cmdport is 0 |
| * Add configure option to set default user to drop root privileges |
| * Add configure option to compile with debug messages |
| * Print debug messages when -d is used more than once |
| * Change format of messages written to terminal with -d |
| * Write fatal messages also to stderr with -n |
| * Use IP_RECVERR socket option in chronyc to not wait unnecessarily |
| * Shorten default chronyc timeout for localhost |
| * Change default hostname in chronyc from localhost to 127.0.0.1 |
| * Print error message on invalid syntax with all chronyc commands |
| * Include simulation test suite using clknetsim |
| |
| Bug fixes |
| --------- |
| * Fix crash when selecting with multiple preferred sources |
| * Fix frequency calculation with large frequency offsets |
| * Fix code writing drift and RTC files to compile correctly |
| * Fix -4/-6 options in chronyc to not reset hostname set by -h |
| * Fix refclock sample validation with sub-second polling interval |
| * Set stratum correctly with non-PPS SOCK refclock and local stratum |
| * Modify dispersion accounting in refclocks to prevent PPS getting |
| stuck with large dispersion and not accepting new samples |
| |
| New in version 1.29.1 |
| ===================== |
| |
| Security fixes |
| -------------- |
| * Modify chronyc protocol to prevent amplification attacks (CVE-2014-0021) |
| (incompatible with previous protocol version, chronyc supports both) |
| |
| New in version 1.29 |
| =================== |
| |
| Security fixes |
| -------------- |
| * Fix crash when processing crafted commands (CVE-2012-4502) |
| (possible with IP addresses allowed by cmdallow and localhost) |
| * Don't send uninitialized data in SUBNETS_ACCESSED and CLIENT_ACCESSES |
| replies (CVE-2012-4503) (not used by chronyc) |
| |
| Other changes |
| ------------- |
| * Drop support for SUBNETS_ACCESSED and CLIENT_ACCESSES commands |
| |
| New in version 1.28 |
| =================== |
| |
| * Combine sources to improve accuracy |
| * Make config and command parser strict |
| * Add -a option to chronyc to authenticate automatically |
| * Add -R option to ignore initstepslew and makestep directives |
| * Add generatecommandkey, minsamples, maxsamples and user directives |
| * Improve compatibility with NTPv1 and NTPv2 clients |
| * Create sockets only in selected family with -4/-6 option |
| * Treat address bind errors as non-fatal |
| * Extend tracking log |
| * Accept float values as initstepslew threshold |
| * Allow hostnames in offline, online and burst commands |
| * Fix and improve peer polling |
| * Fix crash in config parsing with too many servers |
| * Fix crash with duplicated initstepslew address |
| * Fix delta calculation with extreme frequency offsets |
| * Set local stratum correctly |
| * Remove unnecessary adjtimex calls |
| * Set paths in documentation by configure |
| * Update chrony.spec |
| |
| New in version 1.27 |
| =================== |
| |
| * Support for stronger keys via NSS or libtomcrypt library |
| * Support reading leap second data from tz database |
| * Support for precise clock stepping on Linux |
| * Support for nanoseconds in SHM refclock |
| * Make offset corrections smoother on Linux |
| * Make transmit timestamps random below clock precision |
| * Add corrtimeratio and maxchange directives |
| * Extend tracking, sources and activity reports |
| * Wait in foreground process until daemon is fully initialized |
| * Fix crash with slow name resolving |
| * Fix iburst with jittery sources |
| * Fix offset stored in rtc data right after trimrtc |
| * Fix crash and hang with RTC or manual samples |
| * Don't use readonly adjtime on Linux kernels before 2.6.28 |
| * Changed chronyc protocol, incompatible with older versions |
| |
| New in version 1.26 |
| =================== |
| |
| * Add compatibility with Linux 3.0 and later |
| * Use proper source address in NTP replies on multihomed IPv6 hosts |
| * Accept NTP packets with versions 4, 3 and 2 |
| * Cope with unexpected backward time jumps |
| * Don't reset kernel frequency on start without drift file |
| * Retry on permanent DNS error by default |
| * Add waitsync command |
| |
| New in version 1.25 |
| =================== |
| |
| * Improve accuracy with NTP sources |
| * Improve accuracy with reference clocks |
| * Improve polling interval adjustment |
| * Improve stability with temporary asymmetric delays |
| * Improve source selection |
| * Improve initial synchronisation |
| * Add delayed server name resolving |
| * Add temperature compensation |
| * Add nanosecond slewing to Linux driver |
| * Add fallback drifts |
| * Add iburst, minstratum, maxdelaydevratio, polltarget, |
| prefer, noselect options |
| * Add rtcsync directive to enable Linux 11-minute mode |
| * Add reselectdist, stratumweight, logbanner, maxclockerror, |
| include directives |
| * Add -n option to not detach daemon from terminal |
| * Fix pidfile directive |
| * Fix name resolving with disabled IPv6 support |
| * Fix reloading sample histories with reference clocks |
| * Fix crash with auto_offline option |
| * Fix online command on auto_offline sources |
| * Fix file descriptor leaks |
| * Increase burst polling interval and stop on KoD RATE |
| * Set maxupdateskew to 1000 ppm by default |
| * Require password for clients command |
| * Update drift file at most once per hour |
| * Use system headers for Linux RTC support |
| * Reduce default chronyc timeout and make it configurable |
| * Avoid large values in chronyc sources and sourcestats output |
| * Add reselect command to force reselecting best source |
| * Add -m option to allow multiple commands on command line |
| |
| New in version 1.24 |
| =================== |
| |
| Security fixes |
| -------------- |
| * Don't reply to invalid cmdmon packets (CVE-2010-0292) |
| * Limit client log memory size (CVE-2010-0293) |
| * Limit rate of syslog messages (CVE-2010-0294) |
| |
| Bug fixes/Enhancements |
| ---------------------- |
| * Support for reference clocks (SHM, SOCK, PPS drivers) |
| * IPv6 support |
| * Linux capabilities support (to drop root privileges) |
| * Memory locking support on Linux |
| * Real-time scheduler support on Linux |
| * Leap second support on Linux |
| * Support for editline library |
| * Support for new Linux readonly adjtime |
| * NTP client support for KoD RATE |
| * Read kernel timestamps for received NTP packets |
| * Reply to NTP requests with correct address on multihomed hosts |
| * Retry name resolving after temporary failure |
| * Fix makestep command, make it available on all systems |
| * Add makestep directive for automatic clock stepping |
| * Don't require _bigadj kernel symbol on NetBSD |
| * Avoid blocking read in Linux RTC driver |
| * Support for Linux on S/390 and PowerPC |
| * Fix various bugs on 64-bit systems |
| * Fix valgrind errors and compiler warnings |
| * Improve configure to support common options and variables |
| * Improve status checking and printing in chronyc |
| * Return non-zero exit code on errors in chronyc |
| * Reduce request timeout in chronyc |
| * Print estimated offset in sourcestats |
| * Changed chronyc protocol, incompatible with older versions |
| |
| New in version 1.23 |
| =================== |
| |
| * Support for MIPS, x86_64, sparc, alpha, arm, FreeBSD |
| * Fix serious sign-extension error in handling IP addresses |
| * RTC support can be excluded at compile time |
| * Make sources gcc-4 compatible |
| * Fix various compiler warnings |
| * Handle fluctuations in peer distance better. |
| * Fixed handling of stratum zero. |
| * Fix various problems for 64-bit systems |
| * Flush chronyc output streams after each command, to allow it to be driven |
| through pipes |
| * Manpage improvements |
| |
| Version 1.22 |
| ============ |
| |
| This release number was claimed by a release that Mandriva made to patch |
| important bugs in 1.21. The official numbering has jumped to 1.23 as a |
| consequence. |
| |
| New in version 1.21 |
| =================== |
| |
| * Don't include Linux kernel header files any longer : allows chrony to compile |
| on recent distros. |
| * Stop trying to use RTC if continuous streams of error messages would occur |
| (Linux with HPET). |
| |
| New in version 1.20 |
| =================== |
| |
| * Many small tidy-ups and security improvements |
| * Improve documentation (RTC support in post 2.0 kernels) |
| * Remove trailing \n from syslog messages |
| * Syslog messages now include IP and port number when packet cannot be sent. |
| * Added the "acquisitionport" directive. (Kalle Olavi Niemitalo) |
| * Use uname(2) instead of /proc/version to get kernel version. |
| * Merge support for Linux on Alpha |
| * Merge support for 64bit architectures |
| * Don't link -lm if it's not needed |
| * Fix Solaris build (broken by 64bit change) |
| * Add detection of Linux 2.5 |
| * Allow arbitrary value of HZ in Linux kernel |
| * Fix for chrony.spec on SuSE (Paul Elliot) |
| * Fix handling of initstepslew if no servers are listed (John Hasler) |
| * Fix install rule in Makefile if chronyd is in use (Juliusz Chroboczek) |
| * Replace sprintf by snprintf to remove risk of buffer overrun (John Hasler) |
| * Add --help to configure script |
| |
| New in version 1.19 |
| =================== |
| |
| * Auto-detect kernel's timer interrupt rate (so-called 'HZ') when chronyd |
| starts instead of relying on compiled-in value. |
| * Fix 2 bugs in function that creates the directory for the log and dump files. |
| * Amended webpage URL and contact details. |
| * Generate more informative syslog messages before exiting on failed |
| assertions. |
| * Fix bugs in clamping code for the tick value used when slewing a large |
| offset. |
| * Don't chown files to root during install (should be pointless, and makes RPM |
| building awkward as ordinary user.) |
| * Include chrony.spec file for building RPMs |
| |
| New in version 1.18 |
| =================== |
| * Amend homepage and mailing list information to chrony.sunsite.dk |
| * Delete pidfile on exit from chronyd. |
| * Improvements to readline interface to chronyc |
| * Only generate syslog message when synchronisation is initially lost (instead |
| of on every failed synchronisation attempt) |
| * Use double fork approach when initialising daemon. |
| * More things in contrib directory. |
| * New options to help package builders: --infodir/--mandir for configure, and |
| DESTDIR=xxx for make. (See section 2.2 of chrony.txt for details). |
| * Changed the wording of the messages generated by mailonchange and logchange |
| directives. |
| |
| New in version 1.17 |
| =================== |
| * Port to NetBSD |
| * Configuration supports Linux on PPC |
| * Fix compilation warnings |
| * Several documentation improvements |
| * Bundled manpages (taken from the 'missing manpages project') |
| * Cope with lack of bzero function for Solaris 2.3 systems |
| * Store chronyd's pid in a file (default /var/run/chronyd.pid) and check if |
| chronyd may already be running when starting up. New pidfile directive in |
| configuration file. |
| * Any size subnet is now allowed in allow and deny commands. (Example: |
| 6.7.8/20 or 6.7.8.x/20 (any x) mean a 20 bit subnet). |
| * The environment variables CC and CFLAGS passed to configure can now be used |
| to select the compiler and optimisation/debug options to use |
| * Write syslog messages when chronyd loses synchronisation. |
| * Print GPL text when chronyc is run. |
| * Add NTP broadcast server capability (new broadcast directive). |
| * Add 'auto_offline' option to server/peer (conf file) or add server/peer (via |
| chronyc). |
| * Add 'activity' command to chronyc, to report how many servers/peers are |
| currently online/offline. |
| * Fix long-standing bug with how the system time quantum was calculated. |
| * Include support for systems with HZ!=100 (HZ is the timer interrupt |
| frequency). |
| * Include example chrony.conf and chrony.keys files (examples subdirectory). |
| * Include support for readline in chronyc. |
| |
| New in version 1.16.1 |
| ===================== |
| * Fix compilation problem on Linux 2.4.13 (spinlock.h / spinlock_t) |
| |
| New in version 1.16 |
| =================== |
| * More informative captions for 'sources' and 'sourcestats' commands in chronyc |
| (use 'sources -v' and 'sourcestats -v' to get them). |
| * Correct behaviour for Solaris versions>=2.6 (dosynctodr not required on these |
| versions.) |
| * Remove some compiler warnings (Solaris) |
| * If last line of keys file doesn't have end-of-line, don't truncate final |
| character of that key. |
| * Change timestamp format used in logfiles to make it fully numeric (to aid |
| importing data into spreadsheets etc) |
| * Minor documentation updates and improvements. |
| |
| New in version 1.15 |
| =================== |
| * Add contributed change to 'configure' to support Solaris 2.8 on x86 |
| * Workaround for assertion failure that arises if two received packets occur |
| close together. (Still need to find out why this happens at all.) |
| * Hopefully fix problem where fast slewing was incompatible with machines |
| that have a large background drift rate (=> tick value went out of range |
| for adjtimex() on Linux.) |
| * Fix rtc_linux.c compile problems with 2.4.x kernel include files. |
| * Include support for RTC device not being at /dev/rtc (new rtcdevice directive |
| in configuration file). |
| * Include support for restricting network interfaces for commands (new |
| bindcmdaddress directive in configuration file) |
| * Fix potential linking fault in pktlength.c (use of CROAK macro replaced by |
| normal assert). |
| * Add some material on bug reporting + contributing to the chrony.texi file |
| * Made the chrony.texi file "Vim6-friendly" (removed xrefs on @node lines, |
| added folding markers to chapters + sections.) |
| * Switched over to GPL for the licence |
| |
| New in version 1.14 |
| =================== |
| * Fix compilation for certain other Linux distributions (including Mandrake |
| 7.1) |
| |
| New in version 1.13 |
| =================== |
| * Fixed compilation problems on Redhat/SuSE installations with recent 2.2.x |
| kernels. |
| * Minor tidy-ups and documentation enhancements. |
| * Add support for Linux 2.4 kernels |
| |
| New in version 1.12 |
| =================== |
| |
| * Trial fix for long-standing bug in Linux RTC estimator when system time is |
| slewed. |
| * Fix bug in chronyc if -h is specified without a hostname |
| * Fixes to logging various error conditions when operating in daemon mode. |
| * More stuff under contrib/ |
| * Changes to README file (e.g. about the new chrony-users mailing list) |
| |
| New in version 1.11a |
| ==================== |
| |
| * Minor changes to contact details |
| * Minor changes to installation details (chrony subdirectory under doc/) |
| |
| New in version 1.11 |
| =================== |
| |
| * Improve robustness of installation procedure |
| * Tidy up documenation and contact details |
| * Distribute manual as .txt rather than as .ps |
| * Add -n option to chronyc to work with numeric IP addresses rather than |
| names. |
| * Add material in contrib subdirectory |
| * Improve robustness of handling drift file and RTC coefficients file |
| * Improve robustness of regression algorithm |
| |
| New in version 1.1 |
| ================== |
| |
| Bug fixes |
| --------- |
| |
| * Made linear regression more resistant to rounding errors (old one |
| occasionally generated negative variances which made everything go |
| haywire). Trap infinite or 'not-a-number' values being used to |
| alter system clock to increase robustness further. |
| |
| Other changes/Enhancements |
| -------------------------- |
| |
| * Support for Linux 2.1 and 2.2 kernels |
| |
| * New command 'makestep' in chronyc to immediately jump the system |
| time to match the NTP estimated time (Linux only) - a response to |
| systems booting an hour wrong after summertime/wintertime changes, |
| due to RTCs running on local time. Needs extending to Sun driver |
| files too. |
| |
| * New directives 'logchange' and 'mailonchange' to log to syslog or |
| email to a specific address respectively if chronyd detects a clock |
| offset exceeding a defined threshold. |
| |
| * Added capability to log all client/peer NTP accesses and command |
| accesses (can be turned off with conf file directive 'noclientlog'). |
| Added 'clients' command to chronyc to display this data. |
| |
| * Improved manual mode to use robust regression rather than 2 point |
| fit. |
| |
| * Added 'manual list' and 'manual delete' commands to chronyc to |
| allow display of entered timestamps and discretionary deletion of |
| outliers. |
| |
| * If host goes unsynchronised the dummy IP address 0.0.0.0 is detected |
| to avoid attempting a reverse name lookup (to stop dial on demand IP |
| links from being started) |
| |
| * Changed chronyc/chronyd protocol so messages are now all variable |
| length. Saves on network bandwidth particularly for large replies |
| from chronyd to chronyc (to support the clients command). |
| |
| * Added bindaddress directive to configuration file, to give |
| additional control over limiting which hosts can access the local |
| server. |
| |
| * Groundwork done for a port to Windows NT to compile with Cygwin |
| toolkit. chronyc works (to monitor another host). sys_winnt.c |
| needs finishing to use NT clock control API. Program structure |
| needs adapting to use Windows NT service functions, so it can be |
| started at boot time. Hopefully a Windows NT / Cygwin guru with |
| some spare time can take this port over :-) |
| |
| New in version 1.02 |
| =================== |
| |
| Bug fixes |
| --------- |
| |
| * Fix error messages in chronyc if daemon is not reachable. |
| |
| * Fix config file problem for 'allow all' and 'deny all' without a |
| trailing machine address. |
| |
| * Remove fatal failed assertion if command socket cannot be read from |
| in daemon. |
| |
| * Rewrote timezone handling for Linux real time clock, following |
| various reported problems related to daylight saving. |
| |
| Other changes/Enhancements |
| -------------------------- |
| |
| * Configure script recognizes BSD/386 and uses SunOS 4.1 driver for |
| it. |
| |
| * Log files now print date as day-month-year rather than as a day |
| number. Milliseconds removed from timestamps of logged data. |
| Banners included in file to give meanings of columns. |
| |
| * Only do 1 initial step (followed by a trimming slew) when |
| initialising from RTC on Linux (previously did 2 steps). |
| |
| New in version 1.01 |
| =================== |
| |
| Bug fixes |
| --------- |
| |
| * Handle timezone of RTC correctly with respect to daylight saving |
| time |
| |
| * Syntax check the chronyc 'local' command properly |
| |
| * Fixed assertion failed fault in median finder (used by RTC |
| regression fitting) |
| |
| Other changes/Enhancements |
| -------------------------- |
| |
| * Log selection of new NTP reference source to syslog. |
| |
| * Don't zero-pad IP address fields |
| |
| * Add new command to chronyc to allow logfiles to be cycled. |
| |
| * Extend allow/deny directive syntax in configuration file to so |
| directive can apply to all hosts on the Internet. |
| |
| * Tidy up printout of timestamps to make it clear they are in UTC |
| |
| * Make 'configure' check the processor type as well as the operating |
| system. |
