Ubuntu 网络

ifconfig
ifconfig ens33

root@k8s-n01:~# ifconfig ens33
ens33     Link encap:Ethernet  HWaddr 00:0c:29:50:52:36
          inet addr:192.168.0.181  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe50:5236/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:870490 errors:0 dropped:0 overruns:0 frame:0
          TX packets:832070 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:602840141 (602.8 MB)  TX bytes:263397395 (263.3 MB)

ip addr
ip addr show dev ens33

root@k8s-n01:~# ip addr show dev ens33
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:50:52:36 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.181/24 brd 192.168.0.255 scope global ens33
       valid_lft forever preferred_lft forever
    inet 10.10.50.104/24 brd 10.10.50.255 scope global ens33:1
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe50:5236/64 scope link
       valid_lft forever preferred_lft forever

vim /etc/network/interfaces

iface lo inet loopback
auto lo

# management
auto ens33
iface ens33 inet static
  address 192.168.0.181
  netmask 255.255.255.0
  gateway 192.168.0.1
  dns-nameservers 223.5.5.5
  #secondary 地址配置
auto ens33:1
iface ens33:1 inet static
        address 10.10.50.104
        netmask 255.255.255.0

# k8s-access
auto ens192
iface ens192 inet static
    address 10.0.0.10
    netmask 255.255.255.0
    gateway 10.0.0.1
    dns-nameservers    192.168.10.17
    dns-search    vmware.local

# k8s-transport（仅设置接口状态为 up）
auto ens224
iface ens224 inet manual
    ip link set ens224 up

ifconfig ens33 192.168.0.20 netmask 255.255.255.0 up

#添加 secondary 地址
ifconfig ens33 add 192.168.1.20 netmask 255.255.255.0 up

ip addr add 10.1.1.1/24 dev ens33

#删除地址配置
ip addr del 10.1.1.1/24 dev ens33

sudo route add default gw 10.1.1.1

#删除网关配置
sudo route del default gw 10.1.1.1

vim /etc/network/interfaces

auto ens33
iface ens33 inet static
  hwaddress ether 08:00:00:00:00:01

ifconfig ens33 hw ether 00:0c:29:ab:66:72

ip link show

ip link set dev ens33 address 00:0c:29:ab:66:73

ip link set dev ens33 mtu 8950

systemctl	restart networking

vim /etc/hosts

192.168.10.100 n01.vmware.local
192.168.10.91 m01.vmware.local
192.168.10.92 m02.vmware.local
192.168.10.93 m03.vmware.local

vim /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 223.6.6.6

apt-get install wget net-tools bridge-utils tcpdump -y

ip link veth0 type veth peer name veth1
ip addr add 10.1.1.1/24 dev veth0
ip addr add 10.1.1.2/24 dev veth1
ip link set veth0 up
ip link set veth1 up

ip link add name br0 type bridge
ip link set br0 up

brctl addbr br0 

ip addr add 10.1.1.1/24 dev br0

ip link set dev veth0 master br0
#或者
brctl addif br0 veth0

root@k8s-m01:~# bridge link
6: veth19269bd state UP @(null): <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 master docker0 state forwarding priority 32 cost 2

#或者
brctl show
root@k8s-n01:~# brctl show
bridge name     bridge id               STP enabled     interfaces
docker0         8000.02422c4c4531       no              veth057cc45
                  

ip netns add networkns1

ip netns exec networkns1 ip link list 

ip netns list 

ip netns delete networkns1 

ip link set veth1 netns networkns1 

#设置地址
ip netns exec networkns1 ifconfig veth1 10.1.1.2/24 up

systemctl stop ufw
ufw disable

ip addr

nano /etc/udev/rules.d/70-persistent-net.rules

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="xx:yy:xx:yy:xx:yy", NAME="INTERFACENAME"

ethernets:
INTERFACENAME:

nano /etc/default/grub

#将下列行替换为后面的内容
#GRUB_CMDLINE_LINUX=""

GRUB_CMDLINE_LINUX="net.ifnames=1 biosdevname=0"

update-grub