Hi,
Andrea Venturoli wrote:
Hello.
I've got two servers configured as follows:
a)
/etc/rc.conf:
ifconfig_xl0="inet 192.168.0.2 netmask 255.255.255.0"
ifconfig_fxp0="inet 192.168.101.4 netmask 255.255.255.0"
cloned_interfaces="carp0 carp1 carp2 carp3"
ifconfig_carp0="vhid 1 advskew 100 pass xxxx 192.168.101.10"
ifconfig_carp1="vhid 2 pass yyyy 192.168.101.10"
ifconfig_carp2="vhid 3 advskew 100 pass zzzz 192.168.0.4"
ifconfig_carp3="vhid 4 pass wwww 192.168.0.4"
/etc/sysctl.conf:
net.inet.carp.arpbalance=1
net.inet.carp.preempt=1
b)
/etc/rc.conf:
ifconfig_fxp0="inet 192.168.101.1 netmask 255.255.255.0"
ifconfig_fxp1="inet 192.168.0.3 netmask 255.255.255.0"
cloned_interfaces="carp0 carp1 carp2 carp3"
ifconfig_carp0="vhid 1 pass xxxx 192.168.101.10"
ifconfig_carp1="vhid 2 advskew 100 pass yyyy 192.168.101.10"
ifconfig_carp2="vhid 3 pass zzzz 192.168.0.4"
ifconfig_carp3="vhid 4 advskew 100 pass wwww 192.168.0.4"
/etc/sysctl.conf:
net.inet.carp.arpbalance=1
net.inet.carp.preempt=1
With this I would expect that, being both servers online, they should
have two MASTER and two BACKUP carp interfaces each.
Instead, one has all MASTERs and the other all BACKUPs.
a) ifconfig
carp0: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.101.10 netmask 0xffffff00
carp: BACKUP vhid 1 advbase 1 advskew 100
carp1: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.101.10 netmask 0xffffff00
carp: BACKUP vhid 2 advbase 1 advskew 0
carp2: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.0.4 netmask 0xffffff00
carp: BACKUP vhid 3 advbase 1 advskew 100
carp3: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.0.4 netmask 0xffffff00
carp: BACKUP vhid 4 advbase 1 advskew 0
b) ifconfig
carp0: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.101.10 netmask 0xffffff00
carp: MASTER vhid 1 advbase 1 advskew 0
carp1: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.101.10 netmask 0xffffff00
carp: MASTER vhid 2 advbase 1 advskew 100
carp2: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.0.4 netmask 0xffffff00
carp: MASTER vhid 3 advbase 1 advskew 0
carp3: flags=49<UP,LOOPBACK,RUNNING> mtu 1500
inet 192.168.0.4 netmask 0xffffff00
carp: MASTER vhid 4 advbase 1 advskew 100
Why?
man carp:
net.inet.carp.preempt Allow virtual hosts to preempt each
other. It
is also used to failover carp interfaces as a
group. When the option is enabled and one of
the carp enabled physical interfaces goes
down,
advskew is changed to 240 on all carp inter-
faces. See also the first example. Disabled
by default.
bye & Thanks
av.
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--
Best Wishes,
Stefan Lambrev
ICQ# 24134177
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