ホスト間LXCの移行

ホスト間LXCの移行

LXCでテストシステムを設定し、Webサーバーをインストールするなど問題はありませんでした。しかし、今私は別のホストシステムに切り替えたいと思い、/var/lib/lxc/webserverを圧縮して別のホストにコピーしました。しかし、いくつかのエラーが発生します。

lxc-start: failed to attach 'vethO5HJ2b' to the bridge 'lxcbr0' : No such device
lxc-start: failed to create netdev
lxc-start: failed to create the network
lxc-start: failed to spawn 'webserver'

構成でネットワーク設定が見つかりました。ネットワークの問題を解決したり、ホスト間の移行を終了したりするより良い方法についてのアイデアはありますか?

ifconfig-a

Host1(仮想マシンはここで動作しています)

eth0      Link encap:Ethernet  Hardware Adresse 00:25:90:d2:c2:d6  
          inet Adresse:85.xxx.xxx.43  Bcast:85.xxx.xxx.43  Maske:255.255.255.255
          inet6-Adresse: fe80::225:90ff:fed2:c2d6/64 Gültigkeitsbereich:Verbindung
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1
          RX packets:186831047 errors:0 dropped:0 overruns:0 frame:0
          TX packets:170397357 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX-Bytes:14641876568 (14.6 GB)  TX-Bytes:32363758586 (32.3 GB)
          Speicher:f7100000-f7180000 

eth0:1    Link encap:Ethernet  Hardware Adresse 00:25:90:d2:c2:d6  
          inet Adresse:81.xxx.xxx.247  Bcast:81.xxx.xxx.255  Maske:255.255.255.255
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1
          Speicher:f7100000-f7180000 

eth1      Link encap:Ethernet  Hardware Adresse 00:25:90:d2:c2:d7  
          BROADCAST MULTICAST  MTU:1500  Metrik:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX-Bytes:0 (0.0 B)  TX-Bytes:0 (0.0 B)
          Interrupt:20 Speicher:f7200000-f7220000 

lo        Link encap:Lokale Schleife  
          inet Adresse:127.0.0.1  Maske:255.0.0.0
          inet6-Adresse: ::1/128 Gültigkeitsbereich:Maschine
          UP LOOPBACK RUNNING  MTU:65536  Metrik:1
          RX packets:22574 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22574 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:0 
          RX-Bytes:4393152 (4.3 MB)  TX-Bytes:4393152 (4.3 MB)

lxcbr0    Link encap:Ethernet  Hardware Adresse ee:2c:00:bf:f0:a9  
          inet Adresse:10.0.3.1  Bcast:10.0.3.255  Maske:255.255.255.0
          inet6-Adresse: fe80::ec2c:ff:febf:f0a9/64 Gültigkeitsbereich:Verbindung
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:0 
          RX-Bytes:0 (0.0 B)  TX-Bytes:468 (468.0 B)

bridge name bridge id       STP enabled interfaces
lxcbr0      8000.000000000000   no  

ls: Zugriff auf /var/log/upstart/lxc* nicht möglich: Datei oder Verzeichnis nicht gefunden (in English, not found)  

$ brctl show
bridge name bridge id       STP enabled interfaces
lxcbr0      8000.000000000000   no      
minecraft@h2210663:~$ ls -l /var/log/upstart/lxc*
ls: Zugriff auf /var/log/upstart/lxc* nicht möglich: Datei oder Verzeichnis nicht gefunden
minecraft@h2210663:~$ cat /etc/default/lxc
# MIRROR to be used by ubuntu template at container creation:
# Leaving it undefined is fine
#MIRROR="http://archive.ubuntu.com/ubuntu"
# or 
#MIRROR="http://<host-ip-addr>:3142/archive.ubuntu.com/ubuntu"

# LXC_AUTO - whether or not to start containers symlinked under
# /etc/lxc/auto
LXC_AUTO="true"

# Leave USE_LXC_BRIDGE as "true" if you want to use lxcbr0 for your
# containers.  Set to "false" if you'll use virbr0 or another existing
# bridge, or mavlan to your host's NIC.
USE_LXC_BRIDGE="true"

# If you change the LXC_BRIDGE to something other than lxcbr0, then
# you will also need to update your /etc/lxc/default.conf as well as the
# configuration (/var/lib/lxc/<container>/config) for any containers
# already created using the default config to reflect the new bridge
# name.
# If you have the dnsmasq daemon installed, you'll also have to update
# /etc/dnsmasq.d/lxc and restart the system wide dnsmasq daemon.
LXC_BRIDGE="lxcbr0"
LXC_ADDR="10.0.3.1"
LXC_NETMASK="255.255.255.0"
LXC_NETWORK="10.0.3.0/24"
LXC_DHCP_RANGE="10.0.3.2,10.0.3.254"
LXC_DHCP_MAX="253"

LXC_SHUTDOWN_TIMEOUT=120

$ cat /etc/init/lxc-net.conf
description "lxc network"
author "Serge Hallyn <[email protected]>"

start on starting lxc
stop on stopped lxc

env USE_LXC_BRIDGE="false"
env LXC_BRIDGE="lxcbr0"
env LXC_ADDR="10.0.3.1"
env LXC_NETMASK="255.255.255.0"
env LXC_NETWORK="10.0.3.0/24"
env LXC_DHCP_RANGE="10.0.3.2,10.0.3.254"
env LXC_DHCP_MAX="253"
env varrun="/var/run/lxc"

pre-start script
    [ -f /etc/default/lxc ] && . /etc/default/lxc

    [ "x$USE_LXC_BRIDGE" = "xtrue" ] || { stop; exit 0; }

    cleanup() {
        # dnsmasq failed to start, clean up the bridge
        iptables -t nat -D POSTROUTING -s ${LXC_NETWORK} ! -d ${LXC_NETWORK} -j MASQUERADE || true
        ifconfig ${LXC_BRIDGE} down || true
        brctl delbr ${LXC_BRIDGE} || true
    }

    if [ -d /sys/class/net/${LXC_BRIDGE} ]; then
        if [ ! -f ${varrun}/network_up ]; then
            # bridge exists, but we didn't start it
            stop;
        fi
        exit 0;
    fi

    # set up the lxc network
    echo 1 > /proc/sys/net/ipv4/ip_forward
    mkdir -p ${varrun}
    brctl addbr ${LXC_BRIDGE}
    ifconfig ${LXC_BRIDGE} ${LXC_ADDR} netmask ${LXC_NETMASK} up
    iptables -t nat -A POSTROUTING -s ${LXC_NETWORK} ! -d ${LXC_NETWORK} -j MASQUERADE
    dnsmasq -u lxc-dnsmasq --strict-order --bind-interfaces --pid-file=${varrun}/dnsmasq.pid --conf-file= --listen-address ${LXC_ADDR} --dhcp-range ${LXC_DHCP_RANGE} --dhcp-lease-max=${LXC_DHCP_MAX} --dhcp-no-override --except-interface=lo --interface=${LXC_BRIDGE} --dhcp-leasefile=/var/lib/misc/dnsmasq.${LXC_BRIDGE}.leases --dhcp-authoritative || cleanup
    touch ${varrun}/network_up
end script

post-stop script
    [ -f /etc/default/lxc ] && . /etc/default/lxc
    [ -f "${varrun}/network_up" ] || exit 0;
    # if $LXC_BRIDGE has attached interfaces, don't shut it down
    ls /sys/class/net/${LXC_BRIDGE}/brif/* > /dev/null 2>&1 && exit 0;

    if [ -d /sys/class/net/${LXC_BRIDGE} ]; then
        ifconfig ${LXC_BRIDGE} down
        iptables -t nat -D POSTROUTING -s ${LXC_NETWORK} ! -d ${LXC_NETWORK} -j MASQUERADE || true
        pid=`cat ${varrun}/dnsmasq.pid 2>/dev/null` && kill -9 $pid || true
        rm -f ${varrun}/dnsmasq.pid
        brctl delbr ${LXC_BRIDGE}
    fi
    rm -f ${varrun}/network_up
end script

ホスト2(対象)

eth0      Link encap:Ethernet  Hardware Adresse 00:25:90:ae:09:6a  
          inet Adresse:2xx.xx4.xxx.217  Bcast:2xx.xx4.xxx.255  Maske:255.255.255.192
          inet6-Adresse: fe80::225:90ff:feae:96a/64 Gültigkeitsbereich:Verbindung
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1
          RX packets:2876153658 errors:0 dropped:48779 overruns:0 frame:0
          TX packets:2680725017 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX bytes:234344379020 (218.2 GiB)  TX bytes:710758489234 (661.9 GiB)
          Interrupt:16 Speicher:df900000-df920000 

eth0:1    Link encap:Ethernet  Hardware Adresse 00:25:90:ae:09:6a  
          inet Adresse:2xx.xx4.xxx.252  Bcast:2xx.xx4.xxx.255  Maske:255.255.255.192
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1
          Interrupt:16 Speicher:df900000-df920000 

eth1      Link encap:Ethernet  Hardware Adresse 00:25:90:ae:09:6b  
          BROADCAST MULTICAST  MTU:1500  Metrik:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:20 Speicher:dfa00000-dfa20000 

lo        Link encap:Lokale Schleife  
          inet Adresse:127.0.0.1  Maske:255.0.0.0
          inet6-Adresse: ::1/128 Gültigkeitsbereich:Maschine
          UP LOOPBACK RUNNING  MTU:16436  Metrik:1
          RX packets:738956166 errors:0 dropped:0 overruns:0 frame:0
          TX packets:738956166 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:0 
          RX bytes:65605834297 (61.1 GiB)  TX bytes:65605834297 (61.1 GiB)
$ brctl show
bridge name bridge id       STP enabled interfaces

   $ ls: Zugriff auf /var/log/upstart/lxc* nicht möglich: Datei oder Verzeichnis nicht gefunden (in English, not found) 

$ cat /etc/default/lxc
# /etc/default/lxc

LXC_AUTO="true"
LXC_DIRECTORY="/ssd/lib/lxc"

$ cat /etc/init/lxc-net.conf
cat: /etc/init/lxc-net.conf: Datei oder Verzeichnis nicht gefunden (in English, not found)

答え1

受信したエラーによれば、2番目のホストにブリッジがありませんlxcbr0

考慮すべきその他の事項:

  1. また、コンテナを「移動」するためにどのような手順を実行しましたか?
  2. コンテナのファイルと.confファイルをコピーしましたか?
  3. 次のコマンドを使用して、2番目のホストでそのホストのコンテナを再作成しましたか?

    $ lxc-create -t TEMPLATE -f lxc.conf -n CONTAINER
    
  4. また、2 つのホスト間の次の点を比較し、2 つのシステム間のすべての設定が一貫していることを確認します。両方のホストで次のコマンドを使用します。

    $ ifconfig -a
    $ brctl show
    $ ls -l /var/log/upstart/lxc*
    $ cat /etc/default/lxc
    $ cat /etc/init/lxc-net.conf
    

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