Keepalived 1.0.3

Hi all,

I have just published the release. This release is a major daemon re-design
release. This release has been sponsorized by Tiscover AG, thanks for helping
project.

The ChangeLog for the release is :

2003-05-12  Alexandre Cassen  <[email protected]>
        * keepalived-1.0.3 released.
        * This release has been sponsorized by :
          Tiscover AG, <www.tiscover.com>
          Please visit sponsor homepage. I would just like to
          thanks their IT team for interresting design discussions
          and testing time, especially Jacob Rief.
        * This release consist of a major daemon re-design to
          increase security and availability of Keepalived.
          The daemon has been splitted into 3 distinct process.
          The global design is based on a minimalistic parent
          process responsible for monitoring its forked children
          process. Then 2 children process, one responsible for
          VRRP framework and the other for healthchecking. Each
          children process has its own scheduling I/O multiplexer,
          that way VRRP scheduling jitter is optimized since VRRP
          scheduling must be more sensible than healthcheckers. On
          the other hand this splitted design minimalize for
          healthchecking the usage of foreign librairies and
          minimalize its own action down to and idle mainloop in
          order to avoid malfunctions caused by itself. The parent
          process monitoring framework has been called watchdog,
          the design is : each children process open an accept unix
          domain socket, then while daemon bootstrap, parent process
          connect to those unix domain socket and send periodic (5s)
          hello packets to children. If parent cannot send hello
          packet to remote connected unix domain socket it simply
          restart children process. This watchdog design offer 2
          benefit, first of all hello packets sent from parent
          process to remote connected children is done throught I/O
          multiplexer scheduler that way it can detect deadloop in
          the children scheduling framework. The second benefit is
          brought by the uses of sysV signal to detect dead children.
          When running you will see in process list :
            PID
            111  keepalived     <-- parent process monitoring child
            112   \_ keepalived <-- VRRP children
            113   \_ keepalived <-- Healthchecking children

        * Parent : Created a global data and global keyword parser
          structure.
        * Healthcheck framework : Defined check_conf_data to handle
          related checker data structures. Created specific checker
          framework parser.
        * VRRP framework : Defined vrrp_conf_data to handle related
          vrrp data structures. Created specific vrrp framework parser.
        * Each child process has its own syslog facility. VRRP use
          LOG_LOCAL1 and Healthchecker LOG_LOCAL2. To split log you
          can so configure your syslog to log both facilities in a
          different logfile.
        * Modularized the configuration parser to limit code
          duplication.
        * Created modularized software watchdog.
        * Extended the recursive stream parser to use sublevel
          detection while stream processing. Used to skip end-of-block
          handling if still at keyword root level to prevent against
          end parsing if unknown block is parsed.
        * Extended pidfile framework to be more generic.
        * Extended memory framework to log specific child data.
        * Fixed a virtual_server_group issue while healthchecker
          bringing back real_servers. Modularized virtual_server_group
          API.
        * Fixed a virtual_server_group issue will reloading
          configuration. Remove vsgname test from the VS_ISEQ macro.
          strcmp(...) comparing null pointer... this must have been
          done in libc :)
        * ipwrapper : set alive flag after ipvs_cmd(...) has been
          performed.
        * VRRP : Extended the netlink framework to support SCOPE
          selection for both ipaddress and routes fonctionnalities.
          SCOPE available are site, link, host, nowhere & global.
          Default value is set to global.
          look at doc/keepalived.conf.SYNOPSIS for more informations.
        * Renamed doc/samples/keepalived.conf.routes to
          doc/samples/keepalived.conf.vrrp.routes.
        * Updated Makefile include dependencies.
        * Vince Worthington created
          'Keepalived-lvs-nat-director-proxyarp-firewall-howto'

All comments are welcome.

Best regards,
Alexandre


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