[ovs-discuss] n00b Requesting Help - I'm Missing Something Basic
Dan Sneddon
dsneddon at redhat.com
Fri Apr 2 18:43:53 UTC 2021
That is part of the answer. If you really want two interfaces on the
same subnet you will need to set up source routing to make packets go
out the same interface they were received on:
https://access.redhat.com/solutions/19596
However, I think the issue with the IP address on the bridge may be that
you need to use NetworkManager to configure the interface, not the ifcfg
file. If you were using network-scripts instead of NetworkManager to
manage the interface, you could edit the ifcfg file to include
"NM_CONTROLLED=no", but you probably want to use nmcli or nmstate. The
network-scripts package is deprecated and not installed by default on
CentOS 8, and will be removed in CentOS 9.
--
Dan Sneddon | Senior Principal Software Engineer
dsneddon at redhat.com | redhat.com/cloud
dsneddon:irc | @dxs:twitter
On 3/31/21 9:12 PM, duluxoz wrote:
> Hi Greg,
>
> Nope, not the answer (or not the whole answer) - I changed eno3's IP
> address to a different subnet and I've still got the exact same issue.
>
> Any other ideas?
>
> On 01/04/2021 08:56, Gregory Rose wrote:
>>
>>
>> On 3/30/2021 7:01 PM, duluxoz wrote:
>>> Hi Greg,
>>>
>>> Thanks for getting back to me.
>>>
>>
>> Hi,
>>
>> I think (at least part of) the problem is that you have two IP addresses
>> on the same subnet assigned to two interfaces. But in Linux the OS
>> owns the IP address, not the interface. Perhaps try a different subnet?
>>
>> Otherwise I think it should work.
>>
>> - Greg
>>
>>
>>> ip link show:
>>>
>>> ~~~
>>> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
>>> mode DEFAULT group default qlen 1000
>>> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>>> 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master
>>> team1 state UP mode DEFAULT group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> 3: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master
>>> team1 state UP mode DEFAULT group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> 4: eno3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
>>> mode DEFAULT group default qlen 1000
>>> link/ether 00:1b:21:e4:a6:f4 brd ff:ff:ff:ff:ff:ff
>>> 5: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
>>> mode DEFAULT group default qlen 1000
>>> link/ether 6a:e9:90:3b:d0:47 brd ff:ff:ff:ff:ff:ff
>>> 6: ovs1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
>>> state UNKNOWN mode DEFAULT group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> 7: team1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
>>> master ovs-system state UP mode DEFAULT group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> ~~~
>>>
>>> ip addr show:
>>>
>>> ~~~
>>> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
>>> group default qlen 1000
>>> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>>> inet 127.0.0.1/8 scope host lo
>>> valid_lft forever preferred_lft forever
>>> inet6 ::1/128 scope host
>>> valid_lft forever preferred_lft forever
>>> 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master
>>> team1 state UP group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> 3: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master
>>> team1 state UP group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> 4: eno3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
>>> group default qlen 1000
>>> link/ether 00:1b:21:e4:a6:f4 brd ff:ff:ff:ff:ff:ff
>>> inet 192.168.0.16/24 brd 192.168.0.255 scope global
>>> noprefixroute eno3
>>> valid_lft forever preferred_lft forever
>>> inet6 fe80::21b:21ff:fee4:a6f4/64 scope link
>>> valid_lft forever preferred_lft forever
>>> 5: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
>>> group default qlen 1000
>>> link/ether 6a:e9:90:3b:d0:47 brd ff:ff:ff:ff:ff:ff
>>> 6: ovs1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
>>> state UNKNOWN group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> 7: team1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
>>> master ovs-system state UP group default qlen 1000
>>> link/ether ac:1f:6b:3c:cc:e8 brd ff:ff:ff:ff:ff:ff
>>> inet6 fe80::ae1f:6bff:fe3c:cce8/64 scope link
>>> valid_lft forever preferred_lft forever
>>> ~~~
>>>
>>> ovs-vsctl show
>>>
>>> ~~~
>>> 49b8d126-5e44-4ebc-8daa-8a73683d08a5
>>> Bridge "ovs1"
>>> Port "ovs1"
>>> Interface "ovs1"
>>> type: internal
>>> Port "team1"
>>> Interface "team1"
>>> ovs_version: "2.12.0"
>>> ~~~
>>>
>>> Cheers
>>>
>>> Dulux-Oz
>>>
>>> On 31/03/2021 03:21, Gregory Rose wrote:
>>>>
>>>>
>>>> On 3/29/2021 12:00 AM, duluxoz wrote:
>>>>> Hi All,
>>>>>
>>>>> Sorry if this is the wrong place to post this and/or I missed the
>>>>> answer in the doco.
>>>>>
>>>>> I'm new to OVS and have been struggling for days with this issue -
>>>>> I hope someone can help.
>>>>>
>>>>> I have a Centos 8 box loaded with kvm/qemu/libvert,
>>>>> NetworkManager-ovs, and ovs (v12.2). The box has three nics in it
>>>>> (en01, en02, en03). I am using eno3 as a management-nic (with an ip
>>>>> address of 192.168.0.16) for the box itself, and the other two nics
>>>>> set up as a lacp team (team1, no ip address, with team1-slave1
>>>>> (eno1) and team1-slave2 (eno2)).
>>>>>
>>>>> Everything is working correctly, and my physical switch has the two
>>>>> team nics both active and load-balanced.
>>>>>
>>>>> I created an ovs (ovs1) and set it up with a static ipv4 address
>>>>> (192.168.0.17). I also modified the ifcfg-team1 file to include the
>>>>> references to ovs1.
>>>>>
>>>>> But I can't ping ovs1 and nmcli says that ovs1 is down - and yes, I
>>>>> have tried bringing it up (nmcli c up ovs1) - which gives an error.
>>>>
>>>> What is the output of 'ip link show', 'ip addr show' and 'ovs-vsctl
>>>> show'?
>>>>
>>>> - Greg
>>>>
>>>>>
>>>>> I have include the relevant ifcfg-* files below.
>>>>>
>>>>> Can someone please tell/show me what I'm doing wrong - thanks.
>>>>>
>>>>> ifcfg-ovs1:
>>>>>
>>>>> ~~~
>>>>> DEVICE=ovs1
>>>>> ONBOOT=yes
>>>>> DEVICETYPE=ovs
>>>>> TYPE=OVSBridge
>>>>> BOOTPROTO=none
>>>>> IPADDR=192.168.0.17
>>>>> PREFIX=24
>>>>> DEFROUTE=yes
>>>>> GATEWAY=192.168.0.1
>>>>> DNS1=192.168.0.2
>>>>> DNS2=192.168.0.3
>>>>> IPV6INIT=no
>>>>> HOTPLUG=no
>>>>> ~~~
>>>>>
>>>>> ifcfg-team1:
>>>>>
>>>>> ~~~
>>>>> TEAM_CONFIG=$'{\"runner\": {\"name\": \"lacp\", \"active\": true,
>>>>> \"fast_rate\": false, \"agg_select_policy\": \"lacp_prio\"},
>>>>> \"link_watch\": {\"name\": \"ethtool\"}}'
>>>>> PROXY_METHOD=none
>>>>> BROWSER_ONLY=no
>>>>> BOOTPROTO=none
>>>>> DEFROUTE=yes
>>>>> IPV4_FAILURE_FATAL=no
>>>>> IPV6INIT=no
>>>>> NAME=team1
>>>>> DEVICE=team1
>>>>> ONBOOT=yes
>>>>> DEVICETYPE=ovs
>>>>> TYPE=OVSPort
>>>>> OVS_BRIDGE=ovs1
>>>>> ~~~
>>>>>
>>>>> ifcfg-team1-slave1:
>>>>>
>>>>> ~~~
>>>>> ETHTOOL_OPTS="autoneg off speed 1000 duplex full"
>>>>> NAME=team1-slave1
>>>>> DEVICE=eno1
>>>>> ONBOOT=yes
>>>>> TEAM_MASTER=team1
>>>>> DEVICETYPE=TeamPort
>>>>> ~~~
>>>>>
>>>>> ifcfg-team1-slave2:
>>>>>
>>>>> ~~~
>>>>> ETHTOOL_OPTS="autoneg off speed 1000 duplex full"
>>>>> NAME=team1-slave2
>>>>> DEVICE=eno2
>>>>> ONBOOT=yes
>>>>> TEAM_MASTER=team1
>>>>> DEVICETYPE=TeamPort
>>>>> ~~~
>>>>>
>>>>> Finally, nmcli d status give:
>>>>>
>>>>> ~~~
>>>>>
>>>>> DEVICE TYPE STATE CONNECTION
>>>>> eno1 ethernet connected team1-slave1
>>>>> eno2 ethernet connected team1-slave2
>>>>> eno3 ethernet connected eno3
>>>>> team1 team connected team1
>>>>> ovs1 ovs-interface disconnected --
>>>>> lo loopback unmanaged --
>>>>> ovs1 ovs-bridge unmanaged --
>>>>> team1 ovs-port unmanaged --
>>>>> ovs1 ovs-port unmanaged --
>>>>> ~~~
>>>>>
>>>>> Cheers
>>>>>
>>>>> Dulux-Oz
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> discuss mailing list
>>>>> discuss at openvswitch.org
>>>>> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>>>>>
> --
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