[Keepalived-announce] [ANNOUNCE] Keepalived 1.2.9
Status: Beta
Brought to you by:
acassen
From: Alexandre C. <ac...@fr...> - 2013-11-10 14:15:49
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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 <ac...@li...> * 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 initalization/configuration. * 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 transition. * 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 Ãlafsson fixed VRRP unicast code to allow packet to be routed ! * Guðmundur Bjarni Ãlafsson 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 benefits: 1) The address becomes immediately usable after they're configured. 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 ! Enjoy, Alexandre |