CentOS 7网络配置工具
CentOS 7网络配置工具
作者：尹正杰
版权声明：原创作品，谢绝转载！否则将追究法律责任。
一.网卡命名机制
CentOS 6之前，网络接口使用连续号码命名：eth0、eth1等,当增加或删除网卡时，名称可能会发生变化 CentOS 7使用基于硬件，设备拓扑和设置类型命名,systemd对网络设备的命名方式规则如下: (1)如果Firmware或BIOS为主板上集成的设备提供的索引信息可用，且可预测则根据此索引进行命名，例如eno1 (2)如果Firmware或BIOS为PCI-E扩展槽所提供的索引信息可用，且可预测，则根据此索引进行命名，例如ens1 (3)如果硬件接口的物理位置信息可用，则根据此信息进行命名，例如enp2s0 (4)如果用户显式启动，也可根据MAC地址进行命名，例如enx2387a1dc56 (5)上述均不可用时，则使用传统命名机制，例如:eth0,eth1
为什么CentOS 6和CentOS 7之间网卡命名会有如此大的变化呢？
因为早期有客户反应为服务器扩展物理网卡时出现了配置文件与服务器网卡不对应的情况。如,原来服务器只有一块网卡，运维人员为其定义了一个配置文件"ifcf-eth0",当添加第二块物理网卡时，发现重启操作后,之前定义的"ifcf-eth0"配置文件竟然识别了新的物理网卡的显现!由此，对网卡的命名推出了以上一系列措施，不过看上面的策略看起来还是不错的。
由于生成环境中我们很少碰到频繁更换物理网卡的现象，我们可以采用传统式命名，为了运维自动化打好基础，首先得标准化(我们先从网卡命名规则统一开始)。
1>.基于BIOS支持启用biosdevname(dell公司研发)软件
Dell服务器的内置网卡命名规则：
em1,em2
Dell外接的pci网卡命名规则：
pYpX Y：slot ,X:port
2>.名称组成格式
en:
Ethernet 有线局域网
wl:
wlan 无线局域网
ww:
wwan无线广域网
3>.名称类型
o<index>: 集成设备的设备索引号 s<slot>:
扩展槽的索引号 x<MAC>:
基于MAC地址的命名 p<bus>s<slot>:
基于硬件接口的物理位置信息如:enp2s1
4>.采用传统命名方式
具体步骤如下:
(1)编辑/etc/default/grub配置文件(或：修改/boot/grub2/grub.cfg) GRUB_CMDLINE_LINUX="... rhgb quiet net.ifnames=0" (2)为grub2生成其配置文件 grub2-mkconfig -o /etc/grub2.cfg(该文件是一个软连接)
(3)重启系统
(4)别忘记修改网卡的配置文件哟~
[root@node101.yinzhengjie.org.cn ~]# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet" GRUB_DISABLE_RECOVERY="true" [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# vim /etc/default/grub [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet net.ifnames=0" GRUB_DISABLE_RECOVERY="true" [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# cat /boot/grub2/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by grub2-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### set pager=1 if [ -s $prefix/grubenv ]; then load_env fi if [ "${next_entry}" ] ; then set default="${next_entry}" set next_entry= save_env next_entry set boot_once=true else set default="${saved_entry}" fi if [ x"${feature_menuentry_id}" = xy ]; then menuentry_id_option="--id" else menuentry_id_option="" fi export menuentry_id_option if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function load_video { if [ x$feature_all_video_module = xy ]; then insmod all_video else insmod efi_gop insmod efi_uga insmod ieee1275_fb insmod vbe insmod vga insmod video_bochs insmod video_cirrus fi } terminal_output console if [ x$feature_timeout_style = xy ] ; then set timeout_style=menu set timeout=5 # Fallback normal timeout code in case the timeout_style feature is # unavailable. else set timeout=5 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/00_tuned ### set tuned_params="" set tuned_initrd="" ### END /etc/grub.d/00_tuned ### ### BEGIN /etc/grub.d/01_users ### if [ -f ${prefix}/user.cfg ]; then source ${prefix}/user.cfg if [ -n "${GRUB2_PASSWORD}" ]; then set superusers="root" export superusers password_pbkdf2 root ${GRUB2_PASSWORD} fi fi ### END /etc/grub.d/01_users ### ### BEGIN /etc/grub.d/10_linux ### menuentry 'CentOS Linux (3.10.0-957.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menue ntry_id_option 'gnulinux-3.10.0-957.el7.x86_64-advanced-7e5d6996-5762-4909-8717-6dd8d6d30a0e' { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod xfs set root='hd0,msdos1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd 0,msdos1' 343e9f9c-8324-4918-a10d-541627af8e04 else search --no-floppy --fs-uuid --set=root 343e9f9c-8324-4918-a10d-541627af8e04 fi linux16 /vmlinuz-3.10.0-957.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/ swap rhgb quiet LANG=en_US.UTF-8 #温馨提示，其实咱们也可以直接修改这里，在这后面直接添加"net.ifnames=0"即可。 initrd16 /initramfs-3.10.0-957.el7.x86_64.img } menuentry 'CentOS Linux (0-rescue-9ccdf621e5984f3b8626614f6fa15a48) 7 (Core)' --class centos --class gnu-linux --class gnu --class os - -unrestricted $menuentry_id_option 'gnulinux-0-rescue-9ccdf621e5984f3b8626614f6fa15a48-advanced-7e5d6996-5762-4909-8717-6dd8d6d30a0e' { load_video insmod gzio insmod part_msdos insmod xfs set root='hd0,msdos1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd 0,msdos1' 343e9f9c-8324-4918-a10d-541627af8e04 else search --no-floppy --fs-uuid --set=root 343e9f9c-8324-4918-a10d-541627af8e04 fi linux16 /vmlinuz-0-rescue-9ccdf621e5984f3b8626614f6fa15a48 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/ro ot rd.lvm.lv=centos/swap rhgb quiet initrd16 /initramfs-0-rescue-9ccdf621e5984f3b8626614f6fa15a48.img } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_ppc_terminfo ### ### END /etc/grub.d/20_ppc_terminfo ### ### BEGIN /etc/grub.d/30_os-prober ### ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f ${config_directory}/custom.cfg ]; then source ${config_directory}/custom.cfg elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ### [root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# ll /etc/grub2.cfg lrwxrwxrwx. 1 root root 22 Jul 8 16:23 /etc/grub2.cfg -> ../boot/grub2/grub.cfg [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# grub2-mkconfig -o /etc/grub2.cfg #为grub2生成其配置文件 Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.10.0-957.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-957.el7.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-9ccdf621e5984f3b8626614f6fa15a48 Found initrd image: /boot/initramfs-0-rescue-9ccdf621e5984f3b8626614f6fa15a48.img done [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
二.CentOS 7网络配置工具-nmcli命令
1>.CentOS 7网络配置工具概述
图形工具：nm-connection-editor
字符配置tui工具：nmtui
命令行工具：nmcli
2>.nmcli支持命令补全(最小化安装需要安装额外的包)
[root@node104.yinzhengjie.org.cn ~]# yum -y install bash-completion.noarch Loaded plugins: fastestmirror Determining fastest mirrors * base: mirror.jdcloud.com * extras: mirrors.tuna.tsinghua.edu.cn * updates: mirrors.tuna.tsinghua.edu.cn base | 3.6 kB 00:00:00 extras | 2.9 kB 00:00:00 updates | 2.9 kB 00:00:00 (1/4): base/7/x86_64/group_gz | 165 kB 00:00:05 (2/4): extras/7/x86_64/primary_db | 153 kB 00:00:06 (3/4): base/7/x86_64/primary_db | 6.0 MB 00:00:07 (4/4): updates/7/x86_64/primary_db | 4.2 MB 00:00:09 Resolving Dependencies --> Running transaction check ---> Package bash-completion.noarch 1:2.1-6.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================================================================================= Package Arch Version Repository Size ================================================================================================================================================= Installing: bash-completion noarch 1:2.1-6.el7 base 85 k Transaction Summary ================================================================================================================================================= Install 1 Package Total download size: 85 k Installed size: 259 k Downloading packages: bash-completion-2.1-6.el7.noarch.rpm | 85 kB 00:00:05 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : 1:bash-completion-2.1-6.el7.noarch 1/1 Verifying : 1:bash-completion-2.1-6.el7.noarch 1/1 Installed: bash-completion.noarch 1:2.1-6.el7 Complete! [root@node104.yinzhengjie.org.cn ~]#
3>.查看网卡的状态(如当前主机的接口是否正常)
[root@node101.yinzhengjie.org.cn ~]# nmcli device DEVICE TYPE STATE CONNECTION eth0 ethernet connected Wired connection 1 eth1 ethernet connected System eth1 lo loopback unmanaged -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
3>.显示所有(包括不活动)连接
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# ll /etc/sysconfig/network-scripts/ifcfg-* -rw-r--r--. 1 root root 54 Jul 8 18:36 /etc/sysconfig/network-scripts/ifcfg-enp0s3 -rw-r--r--. 1 root root 137 Jul 8 18:37 /etc/sysconfig/network-scripts/ifcfg-enp0s8 -rw-r--r-- 1 root root 135 Nov 18 06:28 /etc/sysconfig/network-scripts/ifcfg-eth1 -rw-r--r--. 1 root root 254 Aug 24 2018 /etc/sysconfig/network-scripts/ifcfg-lo [root@node101.yinzhengjie.org.cn ~]#
4>.显示所有活动连接
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show --active NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
5>.显示网络连接配置
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show System\ eth1 connection.id: System eth1 connection.uuid: 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 connection.stable-id: -- connection.type: 802-3-ethernet connection.interface-name: eth1 connection.autoconnect: yes connection.autoconnect-priority: 0 connection.autoconnect-retries: -1 (default) connection.auth-retries: -1 connection.timestamp: 1574031514 connection.read-only: no connection.permissions: -- connection.zone: -- connection.master: -- connection.slave-type: -- connection.autoconnect-slaves: -1 (default) connection.secondaries: -- connection.gateway-ping-timeout: 0 connection.metered: unknown connection.lldp: default connection.mdns: -1 (default) 802-3-ethernet.port: -- 802-3-ethernet.speed: 0 802-3-ethernet.duplex: -- 802-3-ethernet.auto-negotiate: no 802-3-ethernet.mac-address: -- 802-3-ethernet.cloned-mac-address: -- 802-3-ethernet.generate-mac-address-mask:-- 802-3-ethernet.mac-address-blacklist: -- 802-3-ethernet.mtu: auto 802-3-ethernet.s390-subchannels: -- 802-3-ethernet.s390-nettype: -- 802-3-ethernet.s390-options: -- 802-3-ethernet.wake-on-lan: default 802-3-ethernet.wake-on-lan-password: -- ipv4.method: manual ipv4.dns: 172.30.1.254 ipv4.dns-search: -- ipv4.dns-options: "" ipv4.dns-priority: 0 ipv4.addresses: 172.30.1.101/24 ipv4.gateway: 172.30.1.254 ipv4.routes: -- ipv4.route-metric: -1 ipv4.route-table: 0 (unspec) ipv4.ignore-auto-routes: no ipv4.ignore-auto-dns: no ipv4.dhcp-client-id: -- ipv4.dhcp-timeout: 0 (default) ipv4.dhcp-send-hostname: yes ipv4.dhcp-hostname: -- ipv4.dhcp-fqdn: -- ipv4.never-default: no ipv4.may-fail: yes ipv4.dad-timeout: -1 (default) ipv6.method: ignore ipv6.dns: -- ipv6.dns-search: -- ipv6.dns-options: "" ipv6.dns-priority: 0 ipv6.addresses: -- ipv6.gateway: -- ipv6.routes: -- ipv6.route-metric: -1 ipv6.route-table: 0 (unspec) ipv6.ignore-auto-routes: no ipv6.ignore-auto-dns: no ipv6.never-default: no ipv6.may-fail: yes ipv6.ip6-privacy: -1 (unknown) ipv6.addr-gen-mode: stable-privacy ipv6.dhcp-duid: -- ipv6.dhcp-send-hostname: yes ipv6.dhcp-hostname: -- ipv6.token: -- proxy.method: none proxy.browser-only: no proxy.pac-url: -- ipv6.dhcp-duid: -- ipv6.dhcp-send-hostname: yes ipv6.dhcp-hostname: -- ipv6.token: -- proxy.method: none proxy.browser-only: no proxy.pac-url: -- proxy.pac-script: -- GENERAL.NAME: System eth1 GENERAL.UUID: 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 GENERAL.DEVICES: eth1 GENERAL.STATE: activated GENERAL.DEFAULT: no GENERAL.DEFAULT6: no GENERAL.SPEC-OBJECT: -- GENERAL.VPN: no GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/ActiveConnection/2 GENERAL.CON-PATH: /org/freedesktop/NetworkManager/Settings/2 GENERAL.ZONE: -- GENERAL.MASTER-PATH: -- IP4.ADDRESS[1]: 172.30.1.101/24 IP4.GATEWAY: 172.30.1.254 IP4.ROUTE[1]: dst = 172.30.1.0/24, nh = 0.0.0.0, mt = 101 IP4.ROUTE[2]: dst = 0.0.0.0/0, nh = 172.30.1.254, mt = 101 IP4.DNS[1]: 172.30.1.254 IP6.GATEWAY: --
6>.显示设备状态
[root@node101.yinzhengjie.org.cn ~]# nmcli device status DEVICE TYPE STATE CONNECTION eth0 ethernet connected Wired connection 1 eth1 ethernet connected System eth1 lo loopback unmanaged -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli dev status DEVICE TYPE STATE CONNECTION eth0 ethernet connected Wired connection 1 eth1 ethernet connected System eth1 lo loopback unmanaged -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
7>.显示网络接口属性
[root@node101.yinzhengjie.org.cn ~]# nmcli device show eth1 GENERAL.DEVICE: eth1 GENERAL.TYPE: ethernet GENERAL.HWADDR: 08:00:27:C1:C7:46 GENERAL.MTU: 1500 GENERAL.STATE: 100 (connected) GENERAL.CONNECTION: System eth1 GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/2 WIRED-PROPERTIES.CARRIER: on IP4.ADDRESS[1]: 172.30.1.101/24 IP4.GATEWAY: 172.30.1.254 IP4.ROUTE[1]: dst = 172.30.1.0/24, nh = 0.0.0.0, mt = 101 IP4.ROUTE[2]: dst = 0.0.0.0/0, nh = 172.30.1.254, mt = 101 IP4.DNS[1]: 172.30.1.254 IP6.GATEWAY: -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
8>.创建新连接default的配置文件，IP自动通过dhcp获取
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection add con-name default type ethernet ifname eth2 Connection 'default' (ccf4df33-797b-4ab3-8cf0-cc2f39691040) successfully added. [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 default ccf4df33-797b-4ab3-8cf0-cc2f39691040 ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# ll /etc/sysconfig/network-scripts/ifcfg-* -rw-r--r-- 1 root root 281 Nov 18 07:06 /etc/sysconfig/network-scripts/ifcfg-default -rw-r--r--. 1 root root 54 Jul 8 18:36 /etc/sysconfig/network-scripts/ifcfg-enp0s3 -rw-r--r--. 1 root root 137 Jul 8 18:37 /etc/sysconfig/network-scripts/ifcfg-enp0s8 -rw-r--r-- 1 root root 135 Nov 18 06:28 /etc/sysconfig/network-scripts/ifcfg-eth1 -rw-r--r--. 1 root root 254 Aug 24 2018 /etc/sysconfig/network-scripts/ifcfg-lo [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# cat /etc/sysconfig/network-scripts/ifcfg-default TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=dhcp 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=default UUID=ccf4df33-797b-4ab3-8cf0-cc2f39691040 DEVICE=eth2 ONBOOT=yes [root@node101.yinzhengjie.org.cn ~]#
9>.删除连接default的配置文件
[root@node101.yinzhengjie.org.cn ~]# ll /etc/sysconfig/network-scripts/ifcfg-* -rw-r--r-- 1 root root 281 Nov 18 07:06 /etc/sysconfig/network-scripts/ifcfg-default -rw-r--r--. 1 root root 54 Jul 8 18:36 /etc/sysconfig/network-scripts/ifcfg-enp0s3 -rw-r--r--. 1 root root 137 Jul 8 18:37 /etc/sysconfig/network-scripts/ifcfg-enp0s8 -rw-r--r-- 1 root root 135 Nov 18 06:28 /etc/sysconfig/network-scripts/ifcfg-eth1 -rw-r--r--. 1 root root 254 Aug 24 2018 /etc/sysconfig/network-scripts/ifcfg-lo [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 default ccf4df33-797b-4ab3-8cf0-cc2f39691040 ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection delete default Connection 'default' (ccf4df33-797b-4ab3-8cf0-cc2f39691040) successfully deleted. [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# ll /etc/sysconfig/network-scripts/ifcfg-* -rw-r--r--. 1 root root 54 Jul 8 18:36 /etc/sysconfig/network-scripts/ifcfg-enp0s3 -rw-r--r--. 1 root root 137 Jul 8 18:37 /etc/sysconfig/network-scripts/ifcfg-enp0s8 -rw-r--r-- 1 root root 135 Nov 18 06:28 /etc/sysconfig/network-scripts/ifcfg-eth1 -rw-r--r--. 1 root root 254 Aug 24 2018 /etc/sysconfig/network-scripts/ifcfg-lo [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
10>.创建新连接static的配置文件 ，指定静态IP，不自动连接
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection add con-name static ifname eth2 autoconnect no type ethernet ipv4.addresses 172.30.1.100/24 ipv4.gateway 172.30.1.254 Connection 'static' (c004fcc2-0473-4e0d-a132-8e28b2582fad) successfully added. [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# ll /etc/sysconfig/network-scripts/ifcfg-* -rw-r--r--. 1 root root 54 Jul 8 18:36 /etc/sysconfig/network-scripts/ifcfg-enp0s3 -rw-r--r--. 1 root root 137 Jul 8 18:37 /etc/sysconfig/network-scripts/ifcfg-enp0s8 -rw-r--r-- 1 root root 135 Nov 18 06:28 /etc/sysconfig/network-scripts/ifcfg-eth1 -rw-r--r--. 1 root root 254 Aug 24 2018 /etc/sysconfig/network-scripts/ifcfg-lo -rw-r--r-- 1 root root 330 Nov 18 07:11 /etc/sysconfig/network-scripts/ifcfg-static [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# cat /etc/sysconfig/network-scripts/ifcfg-static TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=dhcp IPADDR=172.30.1.100 PREFIX=24 GATEWAY=172.30.1.254 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=static UUID=c004fcc2-0473-4e0d-a132-8e28b2582fad DEVICE=eth2 ONBOOT=no [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
11>.禁用连接配置
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection down Wired\ connection\ 1 Connection 'Wired connection 1' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/1) [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet -- [root@node101.yinzhengjie.org.cn ~]#
12>.启用连接配置(前提是该配置文件绑定的设备的确存在，否则会报错设备不存在哟~)
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection up Wired\ connection\ 1 Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/3) [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
13>.查看帮助
[root@node101.yinzhengjie.org.cn ~]# nmcli connection add help Usage: nmcli connection add { ARGUMENTS | help } ARGUMENTS := COMMON_OPTIONS TYPE_SPECIFIC_OPTIONS SLAVE_OPTIONS IP_OPTIONS [-- ([+|-]<setting>.<property> <value>)+] COMMON_OPTIONS: type <type> ifname <interface name> | "*" [con-name <connection name>] [autoconnect yes|no] [save yes|no] [master <master (ifname, or connection UUID or name)>] [slave-type <master connection type>] TYPE_SPECIFIC_OPTIONS: ethernet: [mac <MAC address>] [cloned-mac <cloned MAC address>] [mtu <MTU>] wifi: ssid <SSID> [mac <MAC address>] [cloned-mac <cloned MAC address>] [mtu <MTU>] [mode infrastructure|ap|adhoc] wimax: [mac <MAC address>] [nsp <NSP>] pppoe: username <PPPoE username> [password <PPPoE password>] [service <PPPoE service name>] [mtu <MTU>] [mac <MAC address>] gsm: apn <APN> [user <username>] [password <password>] cdma: [user <username>] [password <password>] infiniband: [mac <MAC address>] [mtu <MTU>] [transport-mode datagram | connected] [parent <ifname>] [p-key <IPoIB P_Key>] bluetooth: [addr <bluetooth address>] [bt-type panu|nap|dun-gsm|dun-cdma] vlan: dev <parent device (connection UUID, ifname, or MAC)> id <VLAN ID> [flags <VLAN flags>] [ingress <ingress priority mapping>] [egress <egress priority mapping>] [mtu <MTU>] bond: [mode balance-rr (0) | active-backup (1) | balance-xor (2) | broadcast (3) | 802.3ad (4) | balance-tlb (5) | balance-alb (6)] [primary <ifname>] [miimon <num>] [downdelay <num>] [updelay <num>] [arp-interval <num>] [arp-ip-target <num>] [lacp-rate slow (0) | fast (1)] bond-slave: master <master (ifname, or connection UUID or name)> team: [config <file>|<raw JSON data>] team-slave: master <master (ifname, or connection UUID or name)> [config <file>|<raw JSON data>] bridge: [stp yes|no] [priority <num>] [forward-delay <2-30>] [hello-time <1-10>] [max-age <6-40>] [ageing-time <0-1000000>] [multicast-snooping yes|no] [mac <MAC address>] bridge-slave: master <master (ifname, or connection UUID or name)> [priority <0-63>] [path-cost <1-65535>] [hairpin yes|no] vpn: vpn-type vpnc|openvpn|pptp|openconnect|openswan|libreswan|ssh|l2tp|iodine|... [user <username>] olpc-mesh: ssid <SSID> [channel <1-13>] [dhcp-anycast <MAC address>] adsl: username <username> protocol pppoa|pppoe|ipoatm [password <password>] [encapsulation vcmux|llc] tun: mode tun|tap [owner <UID>] [group <GID>] [pi yes|no] [vnet-hdr yes|no] [multi-queue yes|no] ip-tunnel: mode ipip|gre|sit|isatap|vti|ip6ip6|ipip6|ip6gre|vti6 remote <remote endpoint IP> [local <local endpoint IP>] [dev <parent device (ifname or connection UUID)>] macsec: dev <parent device (connection UUID, ifname, or MAC)> mode <psk|eap> [cak <key> ckn <key>] [encrypt yes|no] [port 1-65534] macvlan: dev <parent device (connection UUID, ifname, or MAC)> mode vepa|bridge|private|passthru|source [tap yes|no] vxlan: id <VXLAN ID> remote <IP of multicast group or remote address> [local <source IP>] [dev <parent device (ifname or connection UUID)>] [source-port-min <0-65535>] [source-port-max <0-65535>] [destination-port <0-65535>] dummy: SLAVE_OPTIONS: bridge: [priority <0-63>] [path-cost <1-65535>] [hairpin yes|no] team: [config <file>|<raw JSON data>] IP_OPTIONS: [ip4 <IPv4 address>] [gw4 <IPv4 gateway>] [ip6 <IPv6 address>] [gw6 <IPv6 gateway>] [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
14>.修改连接设置
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet eth0 static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# cat /etc/sysconfig/network-scripts/ifcfg-static TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=dhcp IPADDR=172.30.1.100 PREFIX=24 GATEWAY=172.30.1.254 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=static UUID=c004fcc2-0473-4e0d-a132-8e28b2582fad DEVICE=eth2 ONBOOT=no [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static connection.autoconnect no [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static ipv4.dns 219.141.136.10 [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static +ipv4.dns 219.141.140.10 [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static +ipv4.dns 114.114.114.114 [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static +ipv4.dns 8.8.8.8 [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static -ipv4.dns 8.8.8.8 [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static ipv4.addresses "172.30.1.200" [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static +ipv4.addresses 1.1.1.1/16 [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# cat /etc/sysconfig/network-scripts/ifcfg-static TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=dhcp IPADDR=172.30.1.200 PREFIX=32 GATEWAY=172.30.1.254 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=static UUID=c004fcc2-0473-4e0d-a132-8e28b2582fad DEVICE=eth2 ONBOOT=no DNS1=219.141.136.10 DNS2=219.141.140.10 DNS3=114.114.114.114 IPADDR1=1.1.1.1 PREFIX1=16 [root@node101.yinzhengjie.org.cn ~]#
15>.DNS设置，存放在/etc/resolv.conf文件中
[root@node101.yinzhengjie.org.cn ~]# cat /etc/sysconfig/network-scripts/ifcfg-static TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=dhcp IPADDR=172.30.1.200 PREFIX=32 GATEWAY=172.30.1.254 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=static UUID=c004fcc2-0473-4e0d-a132-8e28b2582fad DEVICE=eth2 ONBOOT=no DNS1=219.141.136.10 DNS2=219.141.140.10 DNS3=114.114.114.114 IPADDR1=1.1.1.1 PREFIX1=16 [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify static ipv4.ignore-auto-dns yes [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# cat /etc/sysconfig/network-scripts/ifcfg-static TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=dhcp IPADDR=172.30.1.200 PREFIX=32 GATEWAY=172.30.1.254 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=static UUID=c004fcc2-0473-4e0d-a132-8e28b2582fad DEVICE=eth2 ONBOOT=no DNS1=219.141.136.10 DNS2=219.141.140.10 DNS3=114.114.114.114 IPADDR1=1.1.1.1 PREFIX1=16 PEERDNS=no [root@node101.yinzhengjie.org.cn ~]#
16>.修改连接配置后，需要重新加载配置
nmcli con reload
nmcli con down “system eth0” #可被自动激活
nmcli con up “system eth0”
nmcli dev dis eth0 #禁用网卡，访止被自动激活
17>.图形工具
nm-connection-editor #图形操作工具，需要安装Linux桌面版本
18>.字符工具
nmtui #和Linux的setup用法类似。 nmtui-connect nmtui-edit nmtui-hostname
19>.nmcli实现bonding
添加bonding接口 nmcli con add type bond con-name mybond0 ifname mybond0 mode active-backup 添加从属接口 nmcli con add type bond-slave ifname ens7 master mybond0 nmcli con add type bond-slave ifname ens3 master mybond0 注：如无为从属接口提供连接名，则该名称是接口名称加类型构成 要启动绑定，则必须首先启动从属接口 nmcli con up bond-slave-eth0 nmcli con up bond-slave-eth1 启动绑定 nmcli con up mybond0
20>.修改连接配置文件的名字
[root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- Wired connection 1 80a31b55-2247-3880-8aae-5154a3b47040 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection modify Wired\ connection\ 1 connection.id eth0 [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# nmcli connection show NAME UUID TYPE DEVICE System eth1 9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04 ethernet eth1 eth0 80a31b55-2247-3880-8aae-5154a3b47040 ethernet -- static c004fcc2-0473-4e0d-a132-8e28b2582fad ethernet -- System enp0s3 3c36b8c2-334b-57c7-91b6-4401f3489c69 ethernet -- System enp0s8 00cb8299-feb9-55b6-a378-3fdc720e0bc6 ethernet -- [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# ll /etc/sysconfig/network-scripts/ifcfg-* -rw-r--r--. 1 root root 54 Jul 8 18:36 /etc/sysconfig/network-scripts/ifcfg-enp0s3 -rw-r--r--. 1 root root 137 Jul 8 18:37 /etc/sysconfig/network-scripts/ifcfg-enp0s8 -rw-r--r-- 1 root root 317 Nov 18 07:37 /etc/sysconfig/network-scripts/ifcfg-eth0 -rw-r--r-- 1 root root 135 Nov 18 06:28 /etc/sysconfig/network-scripts/ifcfg-eth1 -rw-r--r--. 1 root root 254 Aug 24 2018 /etc/sysconfig/network-scripts/ifcfg-lo -rw-r--r-- 1 root root 429 Nov 18 07:28 /etc/sysconfig/network-scripts/ifcfg-static [root@node101.yinzhengjie.org.cn ~]#
三.网络组Network Teaming
1>.网络组概述
网络组：是将多个网卡聚合在一起方法，从而实现冗错和提高吞吐量 网络组不同于旧版中bonding技术，提供更好的性能和扩展性 网络组由内核驱动和teamd守护进程实现. 多种方式runner broadcast roundrobin activebackup loadbalance lacp (implements the 802.3ad Link Aggregation Control Protocol) 启动网络组接口不会自动启动网络组中的port接口 启动网络组接口中的port接口总会自动启动网络组接口 禁用网络组接口会自动禁用网络组中的port接口 没有port接口的网络组接口可以启动静态IP连接 启用DHCP连接时，没有port接口的网络组会等待port接口的加入
2>.创建网络组接口
nmcli con add type team con-name CNAME ifname INAME [config JSON] CNAME 连接名，INAME 接口名 JSON 指定runner方式 格式：'{"runner": {"name": "METHOD"}}' METHOD 可以是broadcast, roundrobin,activebackup, loadbalance, lacp
3>.创建port接口:
nmcli con add type team-slave con-name CNAME ifname INAME master TEAM CNAME 连接名 INAME 网络接口名 TEAM 网络组接口名 连接名若不指定，默认为team-slave-IFACE nmcli dev dis INAME nmcli con up CNAME INAME 设备名 CNAME 网络组接口名或port接口
4>.网络组示例
nmcli con add type team con-name team0 ifname team0 config ‘{“runner”: {“name”: “loadbalance”}}‘ ipv4.addresses 192.168.1.100/24 ipv4.method manual
nmcli con add con-name team0-eth1 type team-slave ifname eth1 master team0
nmcli con add con-name team0-eth2 type team-slave ifname eth2 master team0
nmcli con up team0
nmcli con up team0-eth1
nmcli con up team0-eth2
teamdctl team0 state
nmcli dev dis eth1
5>.实验:创建网络组
ip link
nmcli con add type team con-name team0 ifname team0 config '{"runner": {"name": "activebackup"}}'
nmcli con mod team0 ipv4.addresses '192.168.0.100/24'
nmcli con mod team0 ipv4.method manual
nmcli con add con-name team0-port1 type team-slave ifname eth1 master team0
nmcli con add con-name team0-port2 type team-slave ifname eth2 master team0
teamdctl team0 state
ping -I team0 192.168.0.254
nmcli dev dis eno1
teamdctl team0 state
nmcli con up team0-port1
nmcli dev dis eno2
teamdctl team0 state
nmcli con up team0-port2
teamdctl team0 state
6>.管理网络组配置文件
/etc/sysconfig/network-scripts/ifcfg-team0 DEVICE=team0 DEVICETYPE=Team TEAM_CONFIG="{\"runner\": {\"name\": \"broadcast\"}}" BOOTPROTO=none IPADDR0=172.25.5.100 PREFIX0=24 NAME=team0 ONBOOT=yes /etc/sysconfig/network-scripts/ifcfg-team0-eth1 DEVICE=eth1 DEVICETYPE=TeamPort TEAM_MASTER=team0 NAME=team0-eth1 ONBOOT=yes
7>.删除网络组
nmcli connection down team0
teamdctl team0 state
nmcli connection show
nmcli connectioni delete team0-eth0
nmcli connectioni delete team0-eth1
nmcli connection show
四.ethtool工具
[root@node101.yinzhengjie.org.cn ~]# ethtool eth1 Settings for eth1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Supported FEC modes: Not reported Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on MDI-X: off (auto) Supports Wake-on: umbg Wake-on: d Current message level: 0x00000007 (7) drv probe link Link detected: yes [root@node101.yinzhengjie.org.cn ~]#
五.mii-tools工具
[root@node101.yinzhengjie.org.cn ~]# mii-tool eth1 eth1: no autonegotiation, 1000baseT-FD flow-control, link ok [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]# mii-tool eth1 -v eth1: no autonegotiation, 1000baseT-FD flow-control, link ok product info: Yukon 88E1011 rev 4 basic mode: autonegotiation enabled basic status: autonegotiation complete, link ok capabilities: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD advertising: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD [root@node101.yinzhengjie.org.cn ~]# [root@node101.yinzhengjie.org.cn ~]#
六.测试网络工具
在命令行下测试网络的连通性 显示主机名 hostname 测试网络连通性 ping 显示正确的路由表 ip route 跟踪路由 traceroute tracepath mtr 确定名称服务器使用 nslookup host dig
七.网络客户端工具
ftp，lftp：子命令：get、mget、ls、help lftp [-p port] [-u user[,password]] SERVER lftpget URL wget [option]... [URL]... -q 静默模式 -c 断点续传 -P /path 保存在指定目录 -O filename 保存为指定文件名，filename 为 – 时，发送至标准输出 --limit-rate= 指定传输速率，单位K，M等 links URL --dump --source
当你的才华还撑不起你的野心的时候，你就应该静下心来学习。当你的能力还驾驭不了你的目标的时候，你就应该沉下心来历练。问问自己，想要怎样的人生。
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