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Add to the bottom of the /etc/network/interfaces file of the host,
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# Creates a macvlan interface called macvlan0 without an IP address iface mvlan0 inet manual pre-up ip link add mvlan0 link eth0 address 8a:38:2a:cc:d7:aa type macvlan mode bridge post-down ip link del macvlan0 auto mvlan0 |
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This macvlan0 is a placeholder on the host that will be used by a container interface. I have only purchased one additional static IP address so not all scenarios are tested. Please fill out the chart if you can,
If somebody gets to step 2 in below chart, please fill out for me. Otherwise, I'll try myself using my home network which is not exactly the same thing.
| # | Host | container1 | container2 | Results |
|---|---|---|---|---|
| 1 | mvlan0 | connect to mvlan0 with static-IP-1 with container2 off | connect to mvlan0 with static-IP-1 with container1 off | success |
| 2 | mvlan0 | connect to mvlan0 with static-IP-1 with container2 on | connect to mvlan0 with static-IP-2 with container1 on | Not sure... I need to buy another static IP to test |
Scenario 1 basically shows that a macvlan in the host may be used by multiple containers as long as only one host is offon at a time.
Scenario 2 may or may not in which case we would want to create a scenario 3 by adding an additional macvlan mvlan1.
Look at your existing network cards,
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ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:27:13:69:9c:9d
inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::227:13ff:fe69:9c9d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1185139 errors:0 dropped:0 overruns:0 frame:0
TX packets:779265 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:267212921 (267.2 MB) TX bytes:164973471 (164.9 MB)
Interrupt:20 Memory:fc400000-fc420000
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:125735 errors:0 dropped:0 overruns:0 frame:0
TX packets:125735 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:10929290 (10.9 MB) TX bytes:10929290 (10.9 MB)
lxcbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:10.0.3.1 Bcast:10.0.3.255 Mask:255.255.255.0
inet6 addr: fe80::4483:50ff:feb5:bbe4/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:1174 errors:0 dropped:0 overruns:0 frame:0
TX packets:1493 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:106747 (106.7 KB) TX bytes:2243760 (2.2 MB) |
Reboot your system to have the change take effect. Review your network card list,
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ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:27:13:69:9c:9d
inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::227:13ff:fe69:9c9d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:222 errors:0 dropped:0 overruns:0 frame:0
TX packets:177 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23794 (23.7 KB) TX bytes:19751 (19.7 KB)
Interrupt:20 Memory:fc400000-fc420000
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:534 errors:0 dropped:0 overruns:0 frame:0
TX packets:534 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:42672 (42.6 KB) TX bytes:42672 (42.6 KB)
lxcbr0 Link encap:Ethernet HWaddr e2:2a:05:fb:9a:ab
inet addr:10.0.3.1 Bcast:10.0.3.255 Mask:255.255.255.0
inet6 addr: fe80::e02a:5ff:fefb:9aab/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:648 (648.0 B)
mvlan0 Link encap:Ethernet HWaddr 8a:38:2a:cc:d7:aa
inet6 addr: fe80::8838:2aff:fecc:d7aa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:46 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3607 (3.6 KB) TX bytes:648 (648.0 B)
wlan0 Link encap:Ethernet HWaddr 00:26:c6:81:f7:4a
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) |
Notice mvlan0 is present with the hardware address you specified.
Connect Container to macvlan on Host
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# Specify static IPs per container name or mac address. # Addresses should be outside of range in /etc/default/lxc-net (10.0.3.100 to 10.0.3.254) dhcp-host=00:16:3e:a2:7d:54,10.0.3.10 dhcp-host=app,10.0.3.20 dhcp-host=database,10.0.3.30 |
The Because the container called "web" now has two interfaces. 1 static, 1 we still want to assign through dnsmasq. In order for dnsmasq to know which interface to use you must now specify by using the mac address.
Multiple Interfaces
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