我有一个通过 libvirt(CentOS 7)配置的 LXC OS 容器(CentOS 7):
<domain type='lxc'>
<name>lxc-test1.example.com</name>
<uuid>5a715193-55ef-49d7-a4f6-ac5c27bce838</uuid>
<memory unit='KiB'>2097152</memory>
<currentMemory unit='KiB'>2097152</currentMemory>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64'>exe</type>
<init>/sbin/init</init>
</os>
<features>
<privnet/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/libvirt_lxc</emulator>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/var/lib/libvirt/filesystems/lxc-test1.example.com'/>
<target dir='/'/>
</filesystem>
<interface type='bridge'>
<mac address='00:16:3e:c3:6c:78'/>
<source bridge='br_v123'/>
</interface>
<console type='pty'>
<target type='lxc' port='0'/>
</console>
</devices>
</domain>
当容器启动时,它没有按照本地定义正确设置网络/etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
BOOTPROTO=none
DEFROUTE=yes
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=10.2.0.1
PREFIX=24
GATEWAY=10.2.0.254
DNS1=10.0.0.18
DNS2=10.0.0.19
但是,如果我ifdown eth0 && ifup eth0
在容器内,它就会获得所需的配置。
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
34: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:16:3e:c3:6c:78 brd ff:ff:ff:ff:ff:ff
inet6 fe80::216:3eff:fec3:6c78/64 scope link
valid_lft forever preferred_lft forever
# ifdown eth0 && ifup eth0
Device 'eth0' successfully disconnected.
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/1)
# ip addr
34: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:16:3e:c3:6c:78 brd ff:ff:ff:ff:ff:ff
inet 10.2.0.1/24 brd 10.47.34.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::216:3eff:fec3:6c78/64 scope link
valid_lft forever preferred_lft forever
# ping -c 1 10.0.2.254
PING 10.0.2.254 (10.0.2.254) 56(84) bytes of data.
64 bytes from 10.0.2.254: icmp_seq=1 ttl=255 time=0.453 ms
--- 10.0.2.254 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.453/0.453/0.453/0.000 ms
如何让libvirt正确启动容器的网络?
答案1
systemctl disable NetworkManager
systemctl enable network