centos7修改网卡名称、网卡双网卡绑定

Linux系统在大多数企业运用中都占据着及其重要的作用，但是从centos7开始我们发现安装完操作系统后，网卡名称发生了变化，不在是以前的eth0这样命名了。这对于我们使用起来有很多的不便。
本文将介绍如何修改网卡名称，及双网卡绑定。

[root@dwh ~]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1    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 forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:84:ec:d4 brd ff:ff:ff:ff:ff:ff    inet 192.168.12.143/24 brd 192.168.12.255 scope global dynamic ens33       valid_lft 1460sec preferred_lft 1460sec    inet6 fe80::43b6:8da1:941c:76a8/64 scope link        valid_lft forever preferred_lft forever

先修改网卡配置文件

[root@dwh ~]# cd /etc/sysconfig/network-scripts/[root@dwh network-scripts]# lsifcfg-ens33  ifdown-isdn      ifup          ifup-plip      ifup-tunnelifcfg-lo     ifdown-post      ifup-aliases  ifup-plusb     ifup-wirelessifdown       ifdown-ppp       ifup-bnep     ifup-post      init.ipv6-globalifdown-bnep  ifdown-routes    ifup-eth      ifup-ppp       network-functionsifdown-eth   ifdown-sit       ifup-ib       ifup-routes    network-functions-ipv6ifdown-ib    ifdown-Team      ifup-ippp     ifup-sitifdown-ippp  ifdown-TeamPort  ifup-ipv6     ifup-Teamifdown-ipv6  ifdown-tunnel    ifup-isdn     ifup-TeamPort[root@dwh network-scripts]# mv ifcfg-ens33 ifcfg-eth0[root@dwh network-scripts]# vim ifcfg-eth0 TYPE="Ethernet"BOOTPROTO="dhcp"DEFROUTE="yes"PEERDNS="yes"PEERROUTES="yes"IPV4_FAILURE_FATAL="no"NAME="eth0"UUID="18a685ec-ff6b-4a8f-be99-cfe597ada858"DEVICE="eth0"ONBOOT="yes"

禁用命名规则

[root@dwh network-scripts]# vim /etc/default/grubGRUB_CMDLINE_LINUX="rd.lvm.lv=cl/root rd.lvm.lv=cl/swap rhgb net.ifnames=0 biosdevname=0 quiet"[root@dwh network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ...Found linux image: /boot/vmlinuz-3.10.0-514.el7.x86_64Found initrd image: /boot/initramfs-3.10.0-514.el7.x86_64.imgFound linux image: /boot/vmlinuz-0-rescue-cd5074a9e6784fceb326c45e4293f6a2Found initrd image: /boot/initramfs-0-rescue-cd5074a9e6784fceb326c45e4293f6a2.imgdone

重启

[root@dwh network-scripts]# reboot[root@dwh network-scripts]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1    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 forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:84:ec:d4 brd ff:ff:ff:ff:ff:ff    inet 192.168.12.143/24 brd 192.168.12.255 scope global dynamic eth0       valid_lft 1118sec preferred_lft 1118sec    inet6 fe80::20c:29ff:fe84:ecd4/64 scope link        valid_lft forever preferred_lft forever

二、配置双网卡链路聚合

[root@dwh ~]# nmcli connection add type team con-name team0 ifname team0 config '{"runner":{"name":"activebackup"}}'Connection 'team0' (711bde84-1a1d-4aa2-a155-273d0110c031) successfully added.

添加IP

[root@dwh ~]# nmcli connection modify team0 ipv4.addresses "192.168.122.4/24" ipv4.method manual

添加网关、DNS

[root@dwh ~]# nmcli connection modify team0 ipv4.gateway "192.168.12.2" ipv4.dns "114.114.114.114"

[root@dwh ~]# nmcli connection add type team-slave con-name team0-p1 ifname eth0 master team0Connection 'team0-p1' (2f281758-344a-4dc1-8204-67ff9c66f4b6) successfully added[root@dwh ~]# nmcli connection add type team-slave con-name team0-p2 ifname eth1 master team0Connection 'team0-p2' (2a5e5242-32b9-49ec-ae6a-a4e4c2366e7e) successfully added.[root@dwh ~]# nmcli connection up team0Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)[root@dwh ~]# nmcli connection up team0-p1Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7)[root@dwh ~]# nmcli connection up team0-p2Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/8)[root@dwh ~]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1    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 forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:84:ec:d4 brd ff:ff:ff:ff:ff:ff    inet 192.168.12.143/24 brd 192.168.12.255 scope global dynamic eth0       valid_lft 1745sec preferred_lft 1745sec3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000    link/ether 52:54:00:54:55:bb brd ff:ff:ff:ff:ff:ff    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0       valid_lft forever preferred_lft forever4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN qlen 1000    link/ether 52:54:00:54:55:bb brd ff:ff:ff:ff:ff:ff5: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:84:ec:de brd ff:ff:ff:ff:ff:ff    inet 192.168.12.144/24 brd 192.168.12.255 scope global dynamic eth1       valid_lft 1749sec preferred_lft 1749sec8: team0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000    link/ether 9e:11:f7:2a:58:35 brd ff:ff:ff:ff:ff:ff    inet 192.168.122.4/24 brd 192.168.122.255 scope global team0       valid_lft forever preferred_lft forever