lxc创建非特权容器

Question

我已经为create容器安装了lxc，并执行了创建非特权容器的命令，但是当我这样做时会出现以下错误：

[andrea@andrea lxc]$ lxc-create -t download -n prova0
lxc-create: conf.c: chown_mapped_root: 3406 No mapping for container root
lxc-create: lxccontainer.c: do_bdev_create: 943 Error chowning /home/andrea/.local/share/lxc/prova0/rootfs to container root
lxc-create: conf.c: suggest_default_idmap: 4444 Your system is not configured with subuids
lxc-create: lxccontainer.c: do_lxcapi_create: 1408 Error creating backing store type (none) for prova0
lxc-create: lxc_create.c: main: 274 Error creating container prova0

Answer 1

lxc-create: ... Your system is not configured with subuids

根据上面的错误消息，听起来您想要创建一个没有配置subuid的非特权容器。这些步骤适用于Ubuntu14.04，但我怀疑它们也会在Fedora上工作。

$ mkdir -p ~/.config/lxc
$ echo "lxc.id_map = u 0 100000 65536" > ~/.config/lxc/default.conf
$ echo "lxc.id_map = g 0 100000 65536" >> ~/.config/lxc/default.conf
$ echo "lxc.network.type = veth" >> ~/.config/lxc/default.conf
$ echo "lxc.network.link = lxcbr0" >> ~/.config/lxc/default.conf
$ echo "$USER veth lxcbr0 2" | sudo tee -a /etc/lxc/lxc-usernet

配置好这些之后，您应该能够创建一个ubuntu容器，如下所示：

$ lxc-create -t download -n u1 -- -d ubuntu -r trusty -a amd64

摘自Ubuntu指南：https://help.ubuntu.com/lts/serverguide/lxc.html#lxc-unpriv