Re: VMAC problems

Jon
On 06/25/2014 03:50 PM, Ranjith Rajaram wrote:
> Jon
>
> On 06/25/2014 05:35 AM, Jon Foster wrote:
>> I've been trying to use the vmac support without much success. First the
>> system details:
>>
>> Distro: Gentoo Linux x86_64 Linux current.
>> Kernel: Linux 3.10.17 x86_64
>> Keepalived: 1.2.12
>>
>> I've followed the "NOTE_vrrp_vmac.txt" file. And have a config like this:
>>
>>
>> -----
>> vrrp_instance vrrp-eth1-1 {
>>       state MASTER
>>       interface eth1
>>       virtual_router_id 19
>>       priority 100
>>       advert_int 2
>>       use_vmac
>>       vmac_xmit_base
>>       notify_master "/etc/keepalived/config_vmac vrrp/19"
>>       virtual_ipaddress {
>>           10.10.10.19
>>       }
>>       authentication {
>>           auth_type AH
>>           auth_pass SECret
>>       }
>>       smtp_alert
>> }
>> -----
>>
>> My notify script looks like this:
>>
>> -----
>> #!/bin/sh
>> # Tweak global ARP handling. All of these default to 0
>> sysctl -qw net.ipv4.conf.all.arp_ignore=1
> Can you try setting sysctl to 0 instead of 1 and check
> sysctl -w net.ipv4.conf.all.arp_ignore=0
>
> 1 - reply only if the target IP address is local address
> 	configured on the incoming interface
>

ignore this

>> sysctl -qw net.ipv4.conf.all.arp_announce=1
>> sysctl -qw net.ipv4.conf.all.arp_filter=0
>>
>> # Alter eth1 behavior
>> sysctl -qw net.ipv4.conf.eth1.arp_filter=1
>>
>> # Finally configure the virtual network adapter
>> sysctl -qw "net.ipv4.conf.$1.arp_filter=0"
>> sysctl -qw "net.ipv4.conf.$1.accept_local=1"
>> -----
>>
>>
>> The global ARP settings are setup as described in the notify script, so
>> the notify script is redundant for that purpose. Just making sure it
>> doesn't get changed by someone else.
>>
>> My problem is simple. No response from the virtual IP address. Except
>> for the notify script, use_vmac and vmax_xmit_base the configuration
>> works. When I add these lines I see the virtual adapter created but
>> can't ping it or get a response from it. It does however switch between
>> MASTER and BACKUP with its BACKUP server as expected.
>>
>> I've manually setup macvlan adapters with a Linux 3.2.0 i386 system and
>> configured the ARP settings the same and the virtual adapter works for
>> me. The only difference that I see from my test setup and the vmac setup
>> by keepalived is that I was using "bridge" mode and keepalived uses
>> "private".
>>
>> I should also mention that with my test macvlan adapters I had to
>> manually enable "promiscuous" mode on the real NIC for it to work. I had
>> modified my notify script to do that also... but to no avail.
>>
>> Anyone know what I'm doing wrong?
>>
>> THX - Jon
>>

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