CARP forcing failover

[Aristedes Maniatis]

My experience is that it doesn't cause them all the failover, even though an interface going down does cause them all to failover with the pre-emption feature enabled.

Ari


On 1/3/17 2:31pm, Freddie Cash wrote:
> Doesn't "ifconfig vhid XX state master" do what you want? It forces that vhid over to master, which should preempt the other interfaces to switch as well.
> 
> One command.
> 
> On Feb 28, 2017 5:10 PM, "Aristedes Maniatis" <ari at ish.com.au <mailto:ari at ish.com.au>> wrote:
> 
>     Yes, the automatic failover is great and works perfectly to bring all interfaces over at once. But to manually force a failover I need to change the advskew one interface at a time with ifconfig.
> 
>     Ari
> 
> 
>     On 1/3/17 12:04pm, Freddie Cash wrote:
>     > Do you have the preemption sysctl enabled? That will fail-over all carp interfaces when any one fails.
>     >
>     > "sysctl -a | grep carp"
>     >
>     > I'm pretty sure there's also an ifconfig command to force the state as either master or backup. Check the man page.
>     >
>     >
>     > On Feb 28, 2017 5:01 PM, "Aristedes Maniatis" <ari at ish.com.au <mailto:ari at ish.com.au> <mailto:ari at ish.com.au <mailto:ari at ish.com.au>>> wrote:
>     >
>     >     I have a pair network gateway boxes running FreeBSD 11 and pf. Upstream runs VRRP to provide redundant links, one to each gateway. Internally I'm using CARP for failover.
>     >
>     >     All works well, but I find that manually failing over the link is a bit complicated. In short I have this:
>     >
>     >     em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>     >             media: Ethernet autoselect (100baseTX <full-duplex>)
>     >             status: active
>     >             carp: BACKUP vhid 1 advbase 1 advskew 50
>     >     igb0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>     >             media: Ethernet autoselect (1000baseT <full-duplex>)
>     >             status: active
>     >             carp: BACKUP vhid 2 advbase 1 advskew 50
>     >     igb0.2: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>     >             status: active
>     >             vlan: 2 vlanpcp: 0 parent interface: igb0
>     >             carp: BACKUP vhid 3 advbase 1 advskew 50
>     >             groups: vlan
>     >
>     >     That's two internal vlans and one external network. Each interface has its own vhid since that's the advice I had in the past.
>     >
>     >     Now, what command can I type that I could run remotely (SSH over the em0 link) to force all the CARP addresses simultaneously to decrease the advskew and become MASTER. Alternatively I could run something on the MASTER to make it BACKUP. Everything I've done so far is one command per interface which has got me in trouble before as I manage to accidentally remove my own access to the box before I'm done.
>     >
>     >     Cheers
>     >     Ari
>     >
>     >     please cc me.
>     >
>     >     --
>     >     -------------------------->
>     >     Aristedes Maniatis
>     >     CEO, ish
>     >     https://www.ish.com.au
>     >     GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A
>     >
> 
>     --
>     -------------------------->
>     Aristedes Maniatis
>     CEO, ish
>     https://www.ish.com.au
>     GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A
> 

-- 
-------------------------->
Aristedes Maniatis
CEO, ish
https://www.ish.com.au
GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A

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