帶開放式vSwitch的LXC

我想嘗試OVS（軟件Linux交換機）http://openvswitch.org/與我的LXC容器與Ubuntu作爲主機和來賓。所以，我已經安裝了它：帶開放式vSwitch的LXC

# lxc-create -t ubuntu -n veth03-ovs -- -r trusty

創建OVS橋樑和分配的IP給它：

# ovs-vsctl add-br switch0 
# ip add add 192.168.100.1/24 dev switch0

# apt-get install openvswitch-switch

根據這個文檔https://infologs.wordpress.com/2015/06/19/how-to-attach-lxc-container-to-ovs-openvswitch/

創建的測試容器配置

讓它成爲新的網絡192.168.100.0/24和switch0（根據我的理解）將在那裏的第一個地址（網關）。

看起來很好：

# ip a 
... 
4: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default 
    link/ether 52:9d:e1:60:1d:56 brd ff:ff:ff:ff:ff:ff 
5: switch0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default 
    link/ether 16:63:eb:47:13:41 brd ff:ff:ff:ff:ff:ff 
    inet 192.168.100.1/24 scope global switch0 
     valid_lft forever preferred_lft forever

橋接口狀態：

# ovs-vsctl show 
1b236728-4637-42a5-8b81-53d4c93a6803 
    Bridge "switch0" 
     Port "switch0" 
      Interface "switch0" 
       type: internal 
    ovs_version: "2.3.2"

被修改LXC配置爲veth03-OVS容器使用這種橋：

# vim /var/lib/lxc/veth03-ovs/config 
... 
lxc.network.type = veth 
lxc.network.flags = up 

lxc.network.script.up = /etc/lxc/ifup 
lxc.network.script.down = /etc/lxc/ifdown 
# lxc.network.veth.pair = lxc0 
lxc.network.hwaddr = 00:16:3e:15:b3:62 
lxc.network.ipv4 = 192.168.100.10

所以我想指出192.168.100.10爲容器的內部接口。

的/ etc/LXC/ifup的和的/ etc/LXC/ifdown你添加/刪除端口啓動/停止容器後，此橋。

# cat /etc/lxc/ifup 
#!/bin/bash 

BRIDGE=」switch0″ 
ovs-vsctl –may-exist add-br $BRIDGE 
ovs-vsctl –if-exists del-port $BRIDGE $5 
ovs-vsctl –may-exist add-port $BRIDGE $5 

# cat /etc/lxc/ifdown 
#!/bin/bash 
ovsBr=’switch0′ 
ovs-vsctl –if-exists del-port ${ovsBr} $5

所以現在我要開始容器，但得到：

# lxc-start -n veth03-ovs --logfile /tmp/log 
lxc-start: lxc_start.c: main: 344 The container failed to start. 
lxc-start: lxc_start.c: main: 346 To get more details, run the container in foreground mode. 
lxc-start: lxc_start.c: main: 348 Additional information can be obtained by setting the --logfile and --logpriority options. 

# cat /tmp/log 
    lxc-start 1448974395.199 ERROR lxc_conf - conf.c:run_buffer:342 - Script exited with status 1 
    lxc-start 1448974395.225 ERROR lxc_conf - conf.c:lxc_create_network:3079 - failed to create netdev 
    lxc-start 1448974395.225 ERROR lxc_start - start.c:lxc_spawn:950 - failed to create the network 
    lxc-start 1448974395.225 ERROR lxc_start - start.c:__lxc_start:1213 - failed to spawn 'veth03-ovs' 
    lxc-start 1448974400.730 ERROR lxc_start_ui - lxc_start.c:main:344 - The container failed to start. 
    lxc-start 1448974400.730 ERROR lxc_start_ui - lxc_start.c:main:346 - To get more details, run the container in foreground mode. 
    lxc-start 1448974400.730 ERROR lxc_start_ui - lxc_start.c:main:348 - Additional information can be obtained by setting the --logfile and --logpriority options.

我想在的錯誤lxc.network.script.up/lxc.network.script.down腳本和它沒有得到$5參數，這應該是LXC傳遞給OVS的中間接口。但我不確定。

LXC是否支持Open vSwitch？ https://github.com/lxc/lxc/issues/256

來源

2015-12-01 ipeacocks

這是我的錯。我剛剛從WordPress博客複製了ifup/ifdown腳本。但也有錯別字：

ovs-vsctl –may-exist add-br $BRIDGE

，但應該是：

ovs-vsctl --may-exist add-br $BRIDGE

--，不只是-之前may。在ifup/ifdown腳本中處處相同。所以他們應該看起來像這些：

# cat /etc/lxc/ifup 
#!/bin/bash 

BRIDGE=switch0 
ovs-vsctl --may-exist add-br $BRIDGE 
ovs-vsctl --if-exists del-port $BRIDGE $5 
ovs-vsctl --may-exist add-port $BRIDGE $5 

# cat /etc/lxc/ifdown 
#!/bin/bash 
ovsBr=switch0 
ovs-vsctl --if-exists del-port ${ovsBr} $5

來源

2015-12-02 09:16:52 ipeacocks

帶開放式vSwitch的LXC

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