关于Linux中网卡Teamd(分流容灾)的一些笔记

Posted 2022-04-20 山河已无恙

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篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了关于Linux中网卡Teamd(分流容灾)的一些笔记相关的知识，希望对你有一定的参考价值。

写在前面

嗯，准备RHCA，学习整理这部分知识
博文涉及内容：
- 网络teamd 配置Demo、网卡容灾机制演示
- 管理网络teamd的常用命令Demo

我感到难过,不是因为你欺骗了我，而是因为我再也不能相信你了。 ------尼采

保持服务应用高可用的前提，是要确保网络的可用性。只有在网络可用的前提下，才可以考虑通过应用服务的横向扩展，利用集群负载等方式避免单点故障，那么如何确保网络的高可用性呢？

在链路层的容灾处理中，一般通过冗余的方式，避免单点故障：

交换机之间可以通过链路聚合 Eth-Trunk的方式使多条网线成为一个逻辑链路，实现多条线路的负载均衡，提高带宽，同时提供容错，当一条线路失效时，不会造成全网中断。

华为交换机的Eth-Trunk配置，需要注意两个交换机都需要配置

#交换机之间增加了一条网线，两端接口均为 Ethernet 0/0/8
<Huawei>
<Huawei>system-view #进入系统视图
[Huawei]clear configuration interface Ethernet 0/0/7 #如果接口上之前做了配置，先清空接口信息
[Huawei]interface Ethernet0/0/7
[Huawei-Ethernet0/0/7]display this #发现shutdown，接口关闭，需要开启
[Huawei-Ethernet0/0/7]undo shutdown #开启接口
[Huawei]interface Eth-Trunk 1 #进入的同时会自己先创建链路聚合接口
[Huawei-Eth-Trunk1]trunkport Ethernet 0/0/7 0/0/8 #将两个接口一起加入Eth-Trunk1中
[Huawei-Eth-Trunk1]port link-type trunk
[Huawei-Eth-Trunk1]port trunk allow-pass vlan all
[Huawei-Eth-Trunk1]display this #可以查看到允许所以的vlan通过
[Huawei]display current-configuration #验证自己的配置结果
<Huawei>save #存盘
#配置完成，用ping命令测试，删除一条线，再次用ping命令测试,发现都OK

交换机到服务器之间的,链路层又是如何实现容灾的呢？

这就是今天要和小伙伴分享的，服务器通过冗余网络接口(网卡)的方式避免单点故障，将多个网络接口链接到一起形成一个聚合的逻辑网络接口，然后把流量分散到内部的多个网络接口上，实现容错和吞吐量，其实和线路上的链路聚合类似。

网络接口链路聚合具体的技术有很多，在红帽的发行版中，RHEL5、RHEL6中使用的是Bonding。而RHEL7、RHEL8使用Teaming用来实现网络接口链路聚合的功能，在RHEL7、RHEL8中，teaming和bonding它们是并存的，我们可以选择Teaming，也可以选Bonding。

通过Teaming(网络组)技术把同一台服务器上的多个物理网卡通过软件绑定成一个虚拟网卡(同理虚机中，将多个虚拟网卡绑定为一个逻辑网卡).

对于外部网络而言，这台服务器只有一个可用网络接口。对于任何应用程序和网络，这台服务器只有一个网络链接或者说只有一个可以访问的IP地址。
对于服务器内部而言，通过team将网络流量分散在多个网络接口上，从而实现故障转移或提高吞吐量。

配置网络Team

需要的软件包teamd

┌──[root@workstation.lab.example.com]-[~/web]
└─$yum list teamd
Last metadata expiration check: 0:41:27 ago on Sun 17 Apr 2022 08:34:23 PM CST.
Installed Packages
teamd.x86_64                   1.28-4.el8                    @anaconda
Available Packages
teamd.i686                     1.28-4.el8                    rhel-8.1-for-x86_64-baseos-rpms
┌──[root@workstation.lab.example.com]-[~/web]
└─$rpm -qc teamd
/etc/dbus-1/system.d/teamd.conf
/usr/lib/systemd/system/teamd@.service
┌──[root@workstation.lab.example.com]-[~/web]
└─$nmcli connection add  type team
team        team-slave

网络Team是由内核驱动程序和用户空间守护程序（teamd）实现：

内核驱动程序，有效地处理网络数据包。
teamd守护程序，处理逻辑和接口。

既然冗余，那一定会涉及负载，team通过runner来定义负载类型，常见的负载类型：

runner:	描述
activebackup	主备模式
roundrobin	轮询
broadcast	广播
loadbalance	哈希负载均衡
lacp	类似负载均衡
random	随机

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con add con-name team0 ifname team0 type team team.runner
activebackup  broadcast     lacp          loadbalance   random        roundrobin

所有网络交互均通过team接口（或master接口）完成。team interface包涵多个port interface（ports，slave interfaces）。

使用NetworkManager控制team接口时，特别是在查找故障时，请牢记以下几点：

启动team interface，不会自动启动其port interface
停止team interface，始终会停止port interface
启动port interface，始终启动team interface
停止port interface，不会停止team interface
不含port的team interface可以启动静态IP连接
在启动DHCP连接时，不含port interface的team interface将等待port
如果team interface具有DHCP连接且在等待port，则在添加具有载波信号的port interface时，它会完成激活。
如果team interface具有DHCP连接且在等待port，则在添加不具有载波信号的port时它会继续等待。

使用nmcli命令配置和管理team interface和port interfaces，包含4个步骤：

当前的环境

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con show
NAME                UUID                                  TYPE      DEVICE
ethO-static         7c6d44fe-8349-45ea-beb5-226fe674225b  ethernet  eth0
Wired connection 1  4ae4bb9e-8f2d-3774-95f8-868d74edcc3c  ethernet  --
Wired connection 2  c0e6d328-fcb8-3715-8d82-f8c37cb42152  ethernet  --
Wired connection 3  9b5ac87b-572c-3632-b8a2-ca242f22733d  ethernet  --
┌──[root@servera.lab.example.com]-[~]
└─$nmcli dev
DEVICE  TYPE      STATE         CONNECTION
eth0    ethernet  connected     ethO-static
eth1    ethernet  disconnected  --
eth2    ethernet  disconnected  --
lo      loopback  unmanaged     --

我们要创建一个team链路聚合网络接口，然后修改eth1和eth2这两个网络接口master为创建的team接口

创建team类型接口team0，设置负载类型为activebackup

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con add con-name team0 ifname team0 type team team.runner activebackup
Connection 'team0' (2053fe72-6785-4b16-90f0-256c2bf8c4f3) successfully added.
┌──[root@servera.lab.example.com]-[~]
└─$nmcli con show
NAME                UUID                                  TYPE      DEVICE
team0               2053fe72-6785-4b16-90f0-256c2bf8c4f3  team      team0
Wired connection 2  c0e6d328-fcb8-3715-8d82-f8c37cb42152  ethernet  eth1
Wired connection 3  9b5ac87b-572c-3632-b8a2-ca242f22733d  ethernet  eth2
ethO-static         7c6d44fe-8349-45ea-beb5-226fe674225b  ethernet  eth0
Wired connection 1  4ae4bb9e-8f2d-3774-95f8-868d74edcc3c  ethernet  --

我们要和serverd做ping测试,所以根据serverd的IP设置一个ip

┌──[root@workstation.lab.example.com]-[~/web]
└─$ansible serverd -m shell -a 'ip a'
serverd | CHANGED | rc=0 >>
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
。。。。。。。。
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 52:54:00:01:fa:0d brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.254/24 brd 192.168.0.255 scope global noprefixroute eth1
。。。。。。。
┌──[root@workstation.lab.example.com]-[~/web]
└─$

修改team0，添加ipv4的地址和掩码 192.168.0.100/24 (这个地址为创建team链路聚合后服务器的网卡IP)，并激活网络接口

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con modify team0 ipv4.method manual  ipv4.addresses 192.168.0.100/24
┌──[root@servera.lab.example.com]-[~]
└─$nmcli con up team0
Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/33)

添加eth1网络接口team0-port1，设置master为team0，并激活

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con add con-name team0-port1  type team-slave  ifname eth1 master team0
Connection 'team0-port1' (fd24db64-6f9a-41d3-87a5-79f825731d7f) successfully added.
┌──[root@servera.lab.example.com]-[~]
└─$nmcli con up team0-port1
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/29)

添加eth2网络接口team0-port2，设置master为team0，并激活

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con add con-name team0-port2  type team-slave  ifname eth2 master team0
Connection 'team0-port2' (16a95c2a-b581-4b99-ab5a-b9d5ea6b3a87) successfully added.
┌──[root@servera.lab.example.com]-[~]
└─$nmcli con up team0-port2
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/32)

查看当前的网络接口信息

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con show
NAME                UUID                                  TYPE      DEVICE
team0               2053fe72-6785-4b16-90f0-256c2bf8c4f3  team      team0
ethO-static         7c6d44fe-8349-45ea-beb5-226fe674225b  ethernet  eth0
team0-port1         fd24db64-6f9a-41d3-87a5-79f825731d7f  ethernet  eth1
team0-port2         16a95c2a-b581-4b99-ab5a-b9d5ea6b3a87  ethernet  eth2
。。。。。。。。
┌──[root@servera.lab.example.com]-[~]
└─$

使用ping 192.168.0.254(servera)测试,指定网卡，可以看到是通过我们设定的192.168.0.100出去的

┌──[root@servera.lab.example.com]-[~]
└─$ping -I team0 -c 4 192.168.0.254
PING 192.168.0.254 (192.168.0.254) from 192.168.0.100 team0: 56(84) bytes of data.
64 bytes from 192.168.0.254: icmp_seq=1 ttl=64 time=0.663 ms
64 bytes from 192.168.0.254: icmp_seq=2 ttl=64 time=0.675 ms
64 bytes from 192.168.0.254: icmp_seq=3 ttl=64 time=0.670 ms
64 bytes from 192.168.0.254: icmp_seq=4 ttl=64 time=0.701 ms

--- 192.168.0.254 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 69ms
rtt min/avg/max/mdev = 0.663/0.677/0.701/0.023 ms
┌──[root@servera.lab.example.com]-[~]
└─$ping  -c 4 192.168.0.254
PING 192.168.0.254 (192.168.0.254) 56(84) bytes of data.
64 bytes from 192.168.0.254: icmp_seq=1 ttl=64 time=1.32 ms
64 bytes from 192.168.0.254: icmp_seq=2 ttl=64 time=0.891 ms
64 bytes from 192.168.0.254: icmp_seq=3 ttl=64 time=1.10 ms
64 bytes from 192.168.0.254: icmp_seq=4 ttl=64 time=0.677 ms

--- 192.168.0.254 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 8ms
rtt min/avg/max/mdev = 0.677/0.997/1.323/0.240 ms
┌──[root@servera.lab.example.com]-[~]
└─$

通过teamdctl命令查看team接口信息

┌──[root@servera.lab.example.com]-[~]
└─$teamdctl team0 state
setup:
  runner: activebackup
ports:
  eth1
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
  eth2
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eth1
┌──[root@servera.lab.example.com]-[~]
└─$

我们可以看到，当前的负载模式为主备负载，即当前eth1为主网络接口，eth2为备用网络接口。当前的流量都是通过eth1通信。

持续ping 192.168.0.254

┌──[root@servera.lab.example.com]-[~]
└─$ping  192.168.0.254 > /dev/null  &
[1] 3324

监控网络接口的流量信息，会发现eht1持续发送ICMP包

┌──[root@servera.lab.example.com]-[~]
└─$tcpdump -i eth1
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 262144 bytes
01:55:45.049388 IP servera.lab.example.com > 192.168.0.254: ICMP echo request, id 3324, seq 47, length 64
01:55:45.050152 IP 192.168.0.254 > servera.lab.example.com: ICMP echo reply, id 3324, seq 47, length 64
01:55:45.833842 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8004, length 35
01:55:46.073251 IP servera.lab.example.com > 192.168.0.254: ICMP echo request, id 3324, seq 48, length 64
01:55:46.073964 IP 192.168.0.254 > servera.lab.example.com: ICMP echo reply, id 3324, seq 48, length 64
01:55:47.097140 IP servera.lab.example.com > 192.168.0.254: ICMP echo request, id 3324, seq 49, length 64
01:55:47.098096 IP 192.168.0.254 > servera.lab.example.com: ICMP echo reply, id 3324, seq 49, length 64
^C
7 packets captured
7 packets received by filter
0 packets dropped by kernel
┌──[root@servera.lab.example.com]-[~]
└─$

eth2没有流量通过，属于空闲状态

┌──[root@servera.lab.example.com]-[~]
└─$tcpdump -i eth2
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth2, link-type EN10MB (Ethernet), capture size 262144 bytes
01:56:11.817347 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8005, length 35
01:56:13.801263 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8005, length 35
01:56:15.121093 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 52:54:00:02:fa:0d (oui Unknown), length 286
01:56:15.849784 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8005, length 35
^C
4 packets captured
4 packets received by filter
0 packets dropped by kernel
┌──[root@servera.lab.example.com]-[~]
└─$

使用nmcli con down命令将eth1的连接中断，模拟eth1网络接口异常

┌──[root@servera.lab.example.com]-[~]
└─$nmcli con down team0-port1
Connection 'team0-port1' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/34)

监控网络接口的流量信息，会发现eht2持续发送ICMP包,eth1接口空闲。

┌──[root@servera.lab.example.com]-[~]
└─$tcpdump -i eth1
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 262144 bytes
01:57:15.817487 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8004, length 35
01:57:17.802205 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8004, length 35
01:57:19.849582 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8004, length 35
01:57:21.834175 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8004, length 35
^C
4 packets captured
4 packets received by filter
0 packets dropped by kernel

┌──[root@servera.lab.example.com]-[~]
└─$tcpdump -i eth2
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth2, link-type EN10MB (Ethernet), capture size 262144 bytes
01:57:25.721245 IP servera.lab.example.com > 192.168.0.254: ICMP echo request, id 3324, seq 146, length 64
01:57:25.722066 IP 192.168.0.254 > servera.lab.example.com: ICMP echo reply, id 3324, seq 146, length 64
01:57:25.801453 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8005, length 35
01:57:26.722599 IP servera.lab.example.com > 192.168.0.254: ICMP echo request, id 3324, seq 147, length 64
01:57:26.723161 IP 192.168.0.254 > servera.lab.example.com: ICMP echo reply, id 3324, seq 147, length 64
01:57:27.737269 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 52:54:00:01:fa:0a (oui Unknown), length 286
01:57:27.769125 IP servera.lab.example.com > 192.168.0.254: ICMP echo request, id 3324, seq 148, length 64
01:57:27.769796 IP 192.168.0.254 > servera.lab.example.com: ICMP echo reply, id 3324, seq 148, length 64
01:57:27.850081 STP 802.1d, Config, Flags [none], bridge-id 8000.52:54:00:d7:bc:61.8005, length 35
^C
9 packets captured
9 packets received by filter
0 packets dropped by kernel
┌──[root@servera.lab.example.com]-[~]
└─$

teamdctl team0 state查看网络接口状态，当前活动接口为eth2，且eth1接口不在team接口中

┌──[root@servera.lab.example.com]-[~]
└─$teamdctl team0 state
setup:
  runner: activebackup
ports:
  eth2
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eth2
┌──[root@servera.lab.example.com]-[~]
└─$

管理网络Team

网络Team网络配置文件在/etc/sysconfig/network-scripts，包括team interface和port interfaces。

┌──[root@servera.lab.example.com]-[~]
└─$cd /etc/sysconfig/network-scripts/
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$ls
ifcfg-ethO-static  ifcfg-team0  ifcfg-team0-port1  ifcfg-team0-port2  ifcfg-Wired_connection_1

查看ifcfg-team0配置文件信息

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$cat ifcfg-team0
TEAM_CONFIG=" \\"runner\\":  \\"name\\": \\"activebackup\\"  "
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=team0
UUID=2053fe72-6785-4b16-90f0-256c2bf8c4f3
DEVICE=team0
ONBOOT=yes
DEVICETYPE=Team
IPADDR=192.168.0.100
PREFIX=24

子接口ifcfg-team0-port1配置文件信息

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$cat ifcfg-team0-port1
NAME=team0-port1
UUID=fd24db64-6f9a-41d3-87a5-79f825731d7f
DEVICE=eth1
ONBOOT=yes
TEAM_MASTER=team0
DEVICETYPE=TeamPort
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$

创建team interface时，runner默认使用roundrobin，可以使用team.runner指定其他值。

命令行修改Team配置

nmcli con mod CONN_NAME team.config JSON-configuration-file-or-string JSON-configuration-file-or-string格式，参考man teamd.conf中EXAMPLES。

可以修改的字段

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$nmcli con modify team0 team.
team.config                       team.runner                       team.runner-sys-prio
team.link-watchers                team.runner-active                team.runner-tx-balancer
team.mcast-rejoin-count           team.runner-agg-select-policy     team.runner-tx-balancer-interval
team.mcast-rejoin-interval        team.runner-fast-rate             team.runner-tx-hash
team.notify-peers-count           team.runner-hwaddr-policy
team.notify-peers-interval        team.runner-min-ports

使用JSON串修改

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$nmcli con modify team0 team.config ' "runner":  "name": "activebackup"  '
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$nmcli con show team0 | grep run
team.config:                             "runner":  "name": "activebackup"  
team.runner:                            activebackup
team.runner-hwaddr-policy:              --
team.runner-tx-hash:                    --
team.runner-tx-balancer:                --
team.runner-tx-balancer-interval:       -1 (unset)
team.runner-active:                     yes
team.runner-fast-rate:                  no
team.runner-sys-prio:                   -1 (unset)
team.runner-min-ports:                  -1 (unset)
team.runner-agg-select-policy:          --
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$

teamdctl 命令

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamdctl
No team device specified.
teamdctl [options] teamdevname command [command args]
    -h --help                Show this help
    -v --verbose             Increase output verbosity
    -o --oneline             Force output to one line if possible
    -D --force-dbus          Force to use D-Bus interface
    -Z --force-zmq=ADDRESS   Force to use ZeroMQ interface [-Z[Address]]
    -U --force-usock         Force to use UNIX domain socket interface
Commands:
    config dump
    config dump noports
    config dump actual
    state
    state dump
    state view
    state item get ITEMPATH
    state item set ITEMPATH VALUE
    port add PORTDEV
    port remove PORTDEV
    port present PORTDEV
    port config update PORTDEV PORTCONFIG
    port config dump PORTDEV

根据team.conf配置文件修改team配置

导出配置文件

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamdctl team0 config dump >team.conf

修改配置文件

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$cat team.conf

    "device": "team0",
    "mcast_rejoin": 
        "count": 1
    ,
    "notify_peers": 
        "count": 1
    ,
    "ports": 
        "eth1": 
            "link_watch": 
                "name": "ethtool"  # 网卡监控方式
            
        ,
        "eth2": 
            "link_watch": 
                "name": "ethtool"
            
        
    ,
    "runner": 
        "name": "activebackup"

加载配置信息

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$nmcli con mod team0 team.config team.conf

激活team接口

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$nmcli con up team0
Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/51)

通过teamdctl操作team接口,添加删除子接口

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamdctl team0 state
setup:
  runner: activebackup
ports:
  eth2
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eth2

删除子接口eth2

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamdctl team0 port remove eth2
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamdctl team0 state
setup:
  runner: activebackup
runner:
  active port:

添加子接口eth2

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamdctl team0 port add eth2
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamdctl team0 state
setup:
  runner: activebackup
ports:
  eth2
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eth2
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$

teamnl 命令操作team

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamnl
No team device specified.

teamnl [options] teamdevname command [command args]
        -h --help                Show this help
        -p --port_name           team slave port name
        -a --array_index         team option array index
Commands:
        ports
        options
        getoption OPT_NAME
        setoption OPT_NAME OPT_VALUE
        monitor OPT_STYLE

查看子接口状态、id

┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamnl team0 port
 4: eth2: up 4294967295Mbit FD
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$teamnl team0  getoption activeport
4
┌──[root@servera.lab.example.com]-[/etc/sysconfig/network-scripts]
└─$

自动化管理网络Team

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