[lvs-users] [ANNOUNCE] Keepalived 1.2.9

To: keepalived-devel@xxxxxxxxxxxxxxxxxxxxx, keepalived-annouce@xxxxxxxxxxxxxxxxxxxxx, lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: [lvs-users] [ANNOUNCE] Keepalived 1.2.9
From: Alexandre Cassen <acassen@xxxxxxxxxx>
Date: Sun, 10 Nov 2013 15:10:23 +0100 (CET)
Hi folks,

Well, sunday dutty on a raining day ! :) I just pushed a new release extending and fixing some pending issues. Please read the changelog for credits ! and thanks to contributors for their work.

ChangeLog for this release is :

2013-11-10  Alexandre Cassen  <acassen@xxxxxxxxxxxx>
        * keepalived-1.2.9 released.
        * Alexey Andriyanov fixed inaccuracy in VS_ISEQ macro.
        * Alexey Andriyanov fixed hysteresis which could be >= quorum now.
        * Alexey Andriyanov extended checker framework so that status_code
          and digest can be set together.
        * Alexey Andriyanov extended/fixed checker framework for better
          SIGHUP support.
        * Jonas Johansson fixed VRRP sync group by sending prio 0 when
          entering FAULT state. This fix will send prio 0 (VRRP_PRIO_STOP)
          when the VRRP router transists from MASTER to FAULT state. This
          will make a sync group leave the MASTER state more quickly by
          notifying the backup router(s) instead of having them to wait
          for time out.
        * Jonas Johansson extended VRRP VMAC interface flags (up/down
          status) to follow base interface. When using a VMAC interface,
          this fix will reflect the base interface flags, i.e. up/down
          status, to the VMAC interface. This is useful when using sync
          groups (in combination with VMAC) and a link for one of the
          members in the MASTER sync group goes down. Before this fix,
          this member will not detect the link fault, due to that the
          VMAC interface always is UP regardless of the actual status of
          the base interface, and the sync group will continue to be
          MASTER as if nothing has happend. This fix will however reflect
          the status of the base interface onto the VMAC interface, so if
          the link goes down the member will transit to FAULT state, which
          will make the sync group transit to BACKUP state.
        * Jonas Johansson fixed VRRP wrong interface flags corner case.
          If a link event arrives between the initial scanning for
          interfaces and configuration file parsing, the VRRP instance
          will enter an unrecoverable state. This fix will update the
          interface flags even when the interface exists, not only for
          the inital scan.  Note that when all is up and running the link
          events will be properly handled by netlink, so this fix only
          fixes the special case when a link changes state during
        * Jonas Johansson fixed VRRP to honor preempt_delay setting on
          startup. If the preempt_delay is set we cannot yet transition
          to master state. We must await the timeout of our preempt_delay.
          The preemption delay is used when starting up, or rebooting, a
          node which needs time to sort out its routing table (e.g., BGP
          or OSPF) before it can assume the master role.
        * Jonas Johansson extended VRRP code for faster sync group
        * Jonas Johansson replaced popt with getopt. In a embedded
          environment you might not want to have to add yet another
          library dependency. This commit refactors parse_cmdline() to
          use getopt_long() instead och popt.
        * EyckWigo proposed to increase defaut socket buf size to handle
          env with lot of IP addresses, Default is now set to 64K on
          netlink socket.
        * Guðmundur Bjarni �lafsson fixed VRRP unicast code to allow
          packet to be routed !
        * Guðmundur Bjarni �lafsson fixed VRRP checksum before
          computation. When running in unicast mode with multiple peers,
          the checksum was being calculated into itself for consequent
          peers, causing incorrect checksums.
        * Extended VRRP framework tweaking IPv6 VIP install by disabling
          DAD algo and setting deprecated.
          Lot of discussions have been made around those 2 topics. First
          idea and initial patch where provided by Leo Baltus. This patch
          fix the use case where VRRP VIPv6 are used in conjonction of
          IPVS healthchecking. If deprecated flag is not set (which is
          the default linux behaviour), then VRRP VIP can be used as
          source address of healthcheking packet. Since this VIP address
          is also present, in most use-cases, on realserver directly so
          return packets never reach the healthchecker and hence no
          realserver was injected in IPVS table. At the same time, I
          decided to merge Tore Anderson  suggestion of disabling
          Duplicate Address Detection algorithm. Tore's arguments
          are nice ! Thanks Tore : Using the nodad flag has the following
          1) The address becomes immediately usable after they're
          2) In the case of a temporary layer-2 / split-brain problem we
             can avoid that the active VIP transitions into the dadfailed
             phase and stays there forever - leaving us without service.
             HA/VRRP setups have their own "DAD"-like functionality, so
             it's not really needed from the IPv6 stack.

          Acknowledgements to Mark Schouten and Frank Baalbergen for
          pushing me by testing this features !

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