我有 1 个公共 IP，想与运行 Centos 的 LXC 容器共享互联网连接（在此设置中），主机运行 proxmox（基于 debian）。如果我理解正确的话，我需要 NAT 伪装，问题是，我创建的第二个容器无法访问网络。
主机上的设置：
ifconfig 命令：
eth0 Link encap:Ethernet HWaddr 0c:c4:7a:d9:1f:e8
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:15789748 errors:0 dropped:3170 overruns:0 frame:0
TX packets:6323926 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:13693916365 (12.7 GiB) TX bytes:1077829250 (1.0 GiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:11041 errors:0 dropped:0 overruns:0 frame:0
TX packets:11041 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:3907254 (3.7 MiB) TX bytes:3907254 (3.7 MiB)
veth104i0 Link encap:Ethernet HWaddr fe:b4:26:dc:aa:ac
inet6 addr: fe80::fcb4:26ff:fedc:aaac/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:663 errors:0 dropped:0 overruns:0 frame:0
TX packets:10100 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:62852 (61.3 KiB) TX bytes:883353 (862.6 KiB)
veth105i0 Link encap:Ethernet HWaddr fe:69:8f:16:a3:40
inet6 addr: fe80::fc69:8fff:fe16:a340/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:447158 errors:0 dropped:0 overruns:0 frame:0
TX packets:401684 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:46903237 (44.7 MiB) TX bytes:5625117349 (5.2 GiB)
vmbr0 Link encap:Ethernet HWaddr 0c:c4:7a:d9:1f:e8
inet addr:*public IP* Bcast:***** Mask:255.255.0.0
inet6 addr:**** Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:503891 errors:0 dropped:0 overruns:0 frame:0
TX packets:527129 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5637105768 (5.2 GiB) TX bytes:61721641 (58.8 MiB)
vmbr1 Link encap:Ethernet HWaddr fe:69:8f:16:a3:40
inet addr:10.10.10.254 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::b42e:2eff:fe1a:5640/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:447158 errors:0 dropped:0 overruns:0 frame:0
TX packets:401684 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:40643025 (38.7 MiB) TX bytes:5625117349 (5.2 GiB)
iptables -t nat -L
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
MASQUERADE all -- 10.10.10.0/24 !10.10.10.0/24
MASQUERADE all -- 10.10.10.0/24 anywhere
MASQUERADE all -- 10.10.10.0/24 !10.10.10.0/24
/etc/网络/接口
auto lo
iface lo inet loopback
iface eth0 inet manual
auto vmbr0
iface vmbr0 inet dhcp
netmask 255.255.255.0
gateway 143.169.254.254
bridge_ports eth0
bridge_stp off
bridge_fd 0
auto vmbr1
iface vmbr1 inet static
address 10.10.10.254
netmask 255.255.255.0
network 10.10.10.0
broadcast 10.10.10.255
bridge_ports none
bridge_stp off
bridge_fd 0
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up iptables -t nat -A POSTROUTING -s '10.10.10.0/24' -o vmbr0 -j MASQUERADE
post-up iptables -t nat -A POSTROUTING -s '10.10.10.0/24' ! -d '10.10.10.0/24' -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '10.10.10.0/24' -o vmbr0 -j MASQUERADE
路线-n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 *public gateway* 0.0.0.0 UG 0 0 0 vmbr0
10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 vmbr1
xxx.xxx.0.0 0.0.0.0 255.255.0.0 U 0 0 0 vmbr0
在两个容器上（私有IP不同）：
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.10.10.254 0.0.0.0 UG 0 0 0 eth0
10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1031 0 0 eth0
是否配置
eth0 Link encap:Ethernet HWaddr 2E:15:95:39:D1:17
inet addr:10.10.10.4 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::2c15:95ff:fe39:d117/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12437 errors:0 dropped:38 overruns:0 frame:0
TX packets:665 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1106036 (1.0 MiB) TX bytes:63024 (61.5 KiB)
/etc/sysconfig/网络脚本/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
IPADDR=10.10.10.4
NETMASK=255.255.255.0
GATEWAY=10.10.10.254
我如何让网络连接到两个容器？系统管理员如何才能找出这里出了什么问题？我可以从第一个容器 ping 到主机。但不能从第二个容器 ping 到主机或邻居。
答案1
在 proxmox 界面中有一个选项，可以设置指向哪个虚拟桥。这个设置是错误的：
