Added some assertion tests in memory framework. Fixed a VRRP issue using syncd configuration. Some cosmetics patches in Makefiles and autoconf. Jacob Rief put THC enabled release here. Thomas Halwax contributed writing a scripting framework for VRRP notify helpers.

Fixed a VRRP scheduling issues. Fixed a linkbeat issues. Extended ipvswrapper code to support 2.6 kernel IPVS code. Updated autoconf and Makefiles to support 2.6 kernel IPVS code. Extended VRRP dropping strategy to siliently drop bogus incoming adverts. Somes cosmetics patches.

Created Keepalived manpages. Fixed a VRRP length issue while testing password field for auth_pass method. Fixed a watchdog quick loop timer. Extended scheduler to support stable scheduling time. Updated default media link failure detection strategy. Some cosmetics cleanup.

Updated autoconf script. Extended daemon design to work-around the SMP forking issue. Extended media link failure detection to support linkwatch subsystem. Extended MII BMSR polling to be fully asynchronous. Optimized a VRRP timer computation. Some cosmetic patches. Wrote a small paper explaining LinkWatch design from Stefan Rompf, <sux <at> loplof <dot> de>.

Extended ip address framework to support broadcast ip address selection. Extended scheduling framework to support long timer and micro-sec second overlap. Extended VRRP and checkers frameworks to support new scheduling long timer. Added support to main daemon log_level selection. Extended HTTP checker to support non blocking read. Fixed a notify script issue. Extended scheduling framework to support child thread while computing global scheduling timer. Extended VRRP FSM to support BACKUP state notifiers and smtp_alert during VRRP initialization.

Extended healthchecker framework to support multiple checkers per realserver. Extended TCP, HTTP & SSL checkers to support binding selection. Reviewed the watchdog calling location, watchdog is reinitialized during a daemon reload event. Extended the global parser to support default handlers. Fixed some code dependencies. Extended VRRP ethtool code to detect ETHTOOL_GLINK availability. Fixed some VRRP IPSEC issues. Fixed a bug while setting static_ipaddress. Fixed a VRRP reloading issue introducing a noisy daemon crash.

Fixed a VRRP dereferencing pointer while processing configuration file reload. Fixed misc checker to perform server state according to checker result.

This release is focused on VRRP high performance and optimizations. Added support to a global shared buffer for incoming advert handling. Added support to pre-allocated shared buffer for outgoing adverts. Extended socket pool design to support shared fd for outbound channel. Added support to static_ipaddress as global keyword. Extended track_interface to support multiple interface tracking. Review the instance lookup design to use o(1) scheduling design to reduce VRRP scheduling jitter using a customized hash index. Review the sync_group design to speed up synchronization using a pre-computed index. Optimized VRRP timer fd lookup using a one pass lookup. Bradley Baetz, extended the scheduler framework to support child process handling. Bradley Baetz, fixed the misc_check healthchecker using new thread child scheduling facility. Added support to a shared kernel netlink command channel. Extended logging code to support verbose log output. Extended gratuitous ARP code to support shared buffer and shared socket. Fixed a gratuitous ARP issue, extended the code for sending garp over device ipaddess belong to. Extended the ipaddress framework to point directly to interface reflected by netlink channel instead of storing device index. Extended VRRP scheduling timer computation to support timer auto-recalibration to provide overhead auto-adaptation. Extended VRRP scheduler to support fd hash table design, this speed up instance lookup while computing instance sands. Extended vrrp new socket creation to replace refreshed instance fd into fd hash table index. Extended vrrp framework to support blank virtual_ipaddress block. Extended watchdog framework to support polling delay selection via daemon command line. Extended the genhash code to support verbose output selection, command arg '-v' will generate a very verbose output. list library has been extended to support multi-sized list & specific element deletion. Some name clean-up, cosmetics extensions.

Updated the Software Design page to introduce new Keepalived internal design (watchdog, parser splitting, ..)


This release has been sponsored by Tiscover AG, thanks go to their IT team and especially to Jacob Rief for design discussions and testing time. Please visit sponsor Homepage at www.tiscover.com. This release is a major daemon re-design to increase security and availability of Keepalived itself. The daemon is split into 3 process, one parent and 2 childrens. Parent monitor children availability. One children for VRRP and another for Healthcheckers. Added support to a modularized watchdog framework. Watchdog estart children if they die or enter scheduling deadloop. Splitted parsing keyword tree for each relevant daemon. Added dedicated syslog facility for each children. Modularized parser. Extended pidfile & memory framework. Fixed a virtual_server_group issue while reloading conf. Extended IPVS wrapper. Extended netlink code to support scope selection. Vince Worthington created the Keepalived-lvs-nat-director-proxyarp-firewall-howto.


This release has been sponsored by edNET, thanks to them for supporting Keepalived project. Please visit sponsor homepage at www.ednet.co.uk. This release added support to virtual_server_group that provide support for real_server to belong to multiple virtual_server without launching a bunch of healthcheckers. Extended the differentiate configuration parser to support virtual_server_group differentiate entries and preserve IPVS working topology. Added support to IP address range support for virtual_server_group. SIGCHLD extension. Extended VRRP virtual_routes to support source route selection. Some cosmetics patches.


This release has been sponsorized by "Ecomdevel LLC", clever and open minded people here, please visit sponsor homepage at www.gigenet.com. Extended netlink kernel reflection to support routings. Added support to static_routes set/removed during daemon bootstrap/shutdown. Added support to virtual_routes set/removed according to VRRP FSM. Extended virtual_ipaddress and virtual_ipaddress_excluded block to specify dedicated device interface for each ipaddress. Added support to track_interface for interface state monitoring (same as HSRP). Rewrote the VRRP VIP & E-VIP memory representation. Optimized code dependence selection. Enhanced HTTP|SSL checkers to support 2KB buffer lenght GET query. Some cosmetics and code cleaning work.

Wrote the draft-ietf-vrrp-ipsecah-spec paper to present VRRP stack implementation of IPSEC-AH authentication method.

Reviewed the website design and created a documentation explaining the Keepalived internal software design.

This is the FIRST STABLE and production ready RELEASE. Enhanced initscript. Added support to ha_suspend. Extended real_server block to support notify_up and notify_down script launch. Set default realserver weight to 1. Fixed a layer4.c issue. Reviewed the SIGCHLD handler. Extended parser to support ecapsulated quoted string. More logging messages. Review HTTP|SSL retry code. Added VRRP sync_group smtp_alert support. Fixed some IPSEC_AH seq_num synchronizations. Extended the VRRP TSM. Some VRRP FSM state optimizations. Extended parser to support sync_group declaration before or after instances declarations. Created keepalived.conf.SYNOPSIS file to describe all keywords available.

Created a common code lib. Rewrote the genhash utility. Review autoconf and Makefiles scripts. Created an html util lib. Extended HTTP and SSL checkers to support remote webserver HTTP header status_code. Modularized the md5sum stream handling for HTTP and SSL checkers. Fixed a premature socket fd close during SMTP notification in HTTP and SSL code. Rewrote the gratuitous ARP code. Some VRRP messages logging. Fixed an issue during VRRP packet building. Remove the previous VRRP ARP packet building. Rewrote the VRRP packet sending process. Extended the interface lib. Extended the VRRP code to support IPSEC-AH authentication. Optimize the VRRP TSM. Some cosmetics patches. Consider this release as a 1.0.0 STABLE release candidate code.

Fixed a misc_check register issue.Extended ipfwwrapper to select ipchains setting or not. Added a gratuitous ARP delayed thread for VRRP MASTER state transition. Review the gratuitous ARP helper function to only send ARP when VRRP VIPs are set. Review the whole VRRP FSM to prevent against junky flapping issues. Added support to a Transition State Matrix (TSM) design to speed synchronization. Optimize the VRRP FAULT state fallback synchronization. Extended the VRRP smtp notifier to notify transition to MASTER or BACKUP states. Adam Fletcher created the LVS-NAT + Keepalived HOWTO.

Fixed a VRRP VIPs reflection set flag issue. Fixed a VRRP framework code selection issue.

Added support to reload configuration file on the fly on SIGHUP receive. Fixed some code dependencies. Added 2 new daemon arguments that permit to not release VRRP VIPs and IPVS topology on daemon stop. Fixed a MISC_CHECK forking issue. Review IPVS wrapper to use allocated IPVS rules. Extended keepalived.init redhat script to support restart and reload arguments. Fixed some typo. Some code cleanup.

Our primary LVS website has terribly crashed down !!! Horms offers vergenet temp hosting with a dynamic content replication provided by Super Sparrow technology. Set Keepalived website to sourceforge as backup location.

Fixed a SMTP stream handling assertion. Added support to inhibit_on_failure for a real_server, this set real_server weight to 0 if checker report a failure. Added kernel check for netlink support.

Rewrote the SMTP notifier framework to use strong FSM design. Extended the VRRP multicast membership subscription to not degrade global scheduling timer on retry. Fixed a buffer overflow during the sending advert interface binding process. Some more cosmetics patches.

Fine the coding style. Review the code source tree. Review Makefile(s) for better code selection on libipvs and libipfwc, added code dependence. Added modprobe_ipvs() during ipvswrapper bootstrap. Review the ipvswrapper to only stop daemon on criticals events. Extend VRRP framework bootstrap sequence to handle interface in shut state during intialization. Updated TODO list. Some cosmetics patches.

Review the coding style. Fixed a null pointer exception. Added RedHat spec file. some cosmetics patches.

Rewrote previous ip address convertion utilities. Extented VRRP notify script to vrrp_sync_group. Added support to libipvs. Some cosmetics patches.

Fixed a vrrp_sync_group flapping issue. Fixed autoconf/automake issues. Cosmetics patches.

Enhanced autoconf/automake scripts. Fixed some memory issues. Enhanced SMTP notification framework.

Added support to CI/SSI heathcheckers mechanism. Linked Healthcheckers activities with Kernel netlink reflector. Review the VRRP synchronization policy to sync many instances at a time. Added support to CIDR notation for VRRP VIPs declarations. Added support to VRRP mcast src ip address selection in adverts. Extented link media failure detection to support ETHTOOL interface. Updated the UserGuide.pdf.

Started a realserver_group definition integration. Review the VRRP script notification. Added support to quoted strings for VRRP script config. Added a VRRP protocol extension "virtual_ipaddress_excluded". More logging facility. Review the VRRP FSM to use more conventional design. Fixed a VRRP instance state flapping issue.

Added an OpenSSL Licence exception. Added connection port selection for healthcheckers. Fixed IPVS exclusion code selection. Added support to VirtualHost selection using HTTP|SSL_GET checkers. Review IPVS syncd state transition. Added support to quoted string for MISC_CHECK. Fixed a VRRP passwd length exception. Enhance VRRP MASTER state.

Review autoconf/automake scripts to permit framework compiling selection. Fixed a SSL stream handling bug. Fixed somes issues in configuration file parser. Limit maximum number of VRRP VIPs to 20 per VRRP Instance. Added IPVS wrapper framework support to persistence granularity mask. Added support to smtp notification for VRRP MASTER state transition. Fixed the UserGuide.pdf.

Fixed some state machine side effects. Registered keepalived domains.

As a VRRP bugfixes & rewrite. Review the VRRP data structure. Remove ioctl system call. Created a NIC interface library. Created a kernel netlink reflector instead of delayed poller. Added support to NIC that supports MII transceiver, monitoring MII BMSR into a delayed MII status register thread poller. Review the VRRP state machine to be more robust. Better multicast handling. Added support LVS sync daemon. Review automake/autoconf scripts. Some cosmetics patches. !!! WARN !!! IPSEC-AH support need to be tuned for sequence number synchronization in fallback state !!!WARN !!!

Added autoconf/automake scripts. Rewrite configuraiton file parser to use some compiler design. Re-design global data strucuture. Created some template library (vector, list). Created a checker API. Fixed an SSL stream handling race condition. Revisited the hole code to use new templates structures. Finish to stabilise the framework.

Created the Keepalived User Guide. Patched a vrrp scheduling memory leak (GCC bug). Jan review memory management framework. Some cosmetics patches. Fine vrrp vips handling.

Created the Keepalived LOGO.

Added memory managment framework. Added support to SSL_GET. Rewrote HTTP_GET to use fully asynchronous stream handling. Patched some memory leaks. Added command lines arguements. Added a bootstrap delay for checkers registration. Added possibility to launch extra script during VRRP state transition. Some cosmetics patches. Rewrote the genhash utility. Started keepalived checkers API specs. Thanks goes to Jan Holmberg for nice thoughts (look at changelog file).

Rewrite the whole VRRP previous code. Created a hierarchic scheduling framework for VRRP Instances (de)multiplexing. Created a socket pool thread register. Review the VRRP multicast binding for outbound/inbound binding. Created a VRRP packet dispatcher to handle VRRP Instances finites states. Created a VRRP Instances synchronization for Instance monitoring. Rewrite the netlink interface. Remove the VRRP VMAC handling. Patched pidfile handling. Patched global scheduling timer race condition. Created a paper presenting VRRP internals implementation. Started VRRP documentation.

Added support to native LVS iptable code. Added support to LVS Direct routing & tunneling. Review the keepalived.init script to be plateforme independent. Some cosmetics patch.

Added support to LVS kernel 2.4 implementation. Right now keepalived support both LVS release, LVS for kernel 2.2 and kernel 2.4.

Added a new devel branch. Added VRRP support using our sheduling I/O multiplexer. VRRP implementation support IPSEC-AH using HMAC-MD5-96bits. Added netlink kernel routing table fetcher for VRRP. Added support to dropping bogus VRRP packets. !!! WARN !!! VRRP code is stable with one instance... the code still under heavy hacking !!! WARN !!!

Patched some race conditions. Eric Jarman added MISC CHECKER, It Perform a system call to run an extra system or script.

Rewrite the whole previous code. Added multithreaded framework using an I/O multiplexer. Rewrite the signal handling, log event using syslog, pidfile handling, configuration file parser, smtp connector, IPVS & IPFW wrappers. Added support for NAT mask on IP MASQ rules. Rewrite checkers. Added sorry server facility.
Futur work : Since we have now a strong scheduling framework, will work on the VRRP integration using "monitored circuit" for LVS. New checkers (LDAP, RADIUS, SSL).

Contributed to the VRRP implementation made by jerome etienne. Added IPSEC-AH using HMAC-MD5-96bits. Added some enhancements. Will be added into the next keepalived release to add director "keepalive" (failover). Please refer to the download page.

Update the documentation with the "Keepalived Quick Start Guide".

Minor bugfixes, cosmetics patches, added ip firewall kernel wrapper. Entering in a documentation state.

Review the dynamic data structure. Added configuration keywords. Move libmd to L. Peter Deutsch independent md5 implementation. Added an smtpwrapper for mail alerte notification (using nonblock/timeouted tcp connection). Move half open connection check to vanilla tcp check (using a nonblock/so_linger/timeouted tcp connection). Review the initial HTTP GET initial implementation, added support for multi-url http get check over the same tcp service (usefull for http servers owning multiple applications servers), added HTTP GET retry, added delay before get retry.
Futur work : Using thread, adding HSRP protocol RFC2281 support, adding SSL get check, adding tcp stream parser, adding Service Level Agreement (SLA) statistic informations, create an ASN.1 frameset to administrate the daemon & LVS services (needed for handling keepalive facility using DR or TUN LVS topology), ... and the folk.

Patch the TCP/ICMP checks functions adding a two level timer.

Initial release as version 0.2.1. This software must be considered as a stable beta version.