On 2012-11-29 12:53, Fleuriot Damien wrote:
On Nov 29, 2012, at 6:43 PM, dweimer <dwei...@dweimer.net> wrote:
I was trying to setup a test of CARP on two virtual machines running
in VirtualBox 4.2.4r81684 I am not sure if I have something wrong with
my CARP configuration or if VirtualBox just doesn't work right with
it. I can only ping the CARP interface IP address from the machine
listed as MASTER, if I do an ifconfig carp0 down on the MASTER the
other machine correctly switches form BACKUP to MASTER and then I can
ping the interface from it but not from the Original system.
The VirtualBox systems are both using bridged networking, and the
host cannot ping the carp0 IP address but can ping the interface IP
address.
Before I go through more trouble shooting, does anyone know if CARP
doesn't work with VirtualBox?
carp configuration
Machine1:
ifconfig_em0="UP"
ifconfig_em0_name="LAN"
ipv4_addrs_LAN="10.20.190.201/16"
defaultrouter="10.20.111.2"
cloned_interfaces="carp0"
ifconfig_carp0="vhid 1 advskew 100 pass ReduntantCarpTest
10.20.190.203/16
ifconfig carp0:
carp0 flags=49<UP,LOOPBACK,RUNNING> metric 0 mtu 1500
inet 10.20.190.203 netmask 0xffff0000
nd6 options=29<PREFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
carp: MASTER vhid 1 advbase 1 advskew 100
Machine2:
ifconfig_em0="UP"
ifconfig_em0_name="LAN"
ipv4_addrs_LAN="10.20.190.202/16"
defaultrouter="10.20.111.2"
cloned_interfaces="carp0"
ifconfig_carp0="vhid 1 pass ReduntantCarpTest 10.20.190.203/16
ifconfig carp0:
carp0 flags=49<UP,LOOPBACK,RUNNING> metric 0 mtu 1500
inet 10.20.190.203 netmask 0xffff0000
nd6 options=29<PREFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
carp: BACKUP vhid 1 advbase 1 advskew 0
FreeBSD version is 9.1RC3 on both test machines.
We're using FreeBSD and CARP in virtualized environments at work,
albeit not on VirtualBox but on Proxmox/KVM.
First, I would advise replacing 10.20.190.203/16 with
10.20.190.203/32
I notice your carp0 is MASTER on machine1 with an advskew of 100 vs
machine 2 advskew 0, same advbase.
Confirm this is *after* you've set carp0 down on machine2.
If both carps are up and machine1 with advskew 100 beats machine2
with advskew 0, you have an additional problem.
See if you have any more luck with the /32 address on carp0 anyway.
The documentation shows the mask matching that of the interface:
hostname="hostb.example.org"
ifconfig_fxp0="inet 192.168.1.4 netmask 255.255.255.0"
cloned_interfaces="carp0"
ifconfig_carp0="vhid 2 pass testpass 192.168.1.51/24"
This is consistent with the man page for CARP on the system as well.
Regardless I tried with the /32 and had the same result as I did with
the /16. I had done various UP/DOWN on interfaces so the current MASTER
was just the last one to have not been DOWN. I think I might just copy
these VMs to my VMWARE Workstation 9 install on my home PC after work
tonight and see if the problem persists.
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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