https://dwt.life/tag/lxc/ https://dwt.life/archives/326/ 2023-04-09T18:29:00+08:00 Centos安装参考，zfs可以不用运行，因为使用的lvm，需要把lvm的操作提前进行：# Install snapd yum install yum-plugin-copr epel-release -y yum copr enable ngompa/snapcore-el7 -y yum install snapd -y service snapd start systemctl enable --now snapd.socket # Install ZFS (skip if you don't want it) yum install http://download.zfsonlinux.org/epel/zfs-release.el7_4.noarch.rpm yum-config-manager --disable zfs yum-config-manager --enable zfs-kmod yum install zfs # Configure the kernel grubby --args="user_namespace.enable=1" --update-kernel="$(grubby --default-kernel)" grubby --args="namespace.unpriv_enable=1" --update-kernel="$(grubby --default-kernel)" echo "user.max_user_namespaces=3883" > /etc/sysctl.d/99-userns.conf reboot # Install the LXD snap snap install lxd # source一下环境变量，因为刚安装还没生效 source /etc/profile # Configure LXD lxd init # Launch containers lxc launch ubuntu:16.04 c1 关于超售部分：超售主要需要增加内存，一般是使用swap，swap参考：https://zhuanlan.zhihu.com/p/399986218需要 cat /proc/cmdline| grep swap 查看swapaccount是否存在且为1https://blog.csdn.net/qq_27037443/article/details/100050978开启步骤开启 memory and swap on system 使用 GNU GRUB (GNU GRand Unified Bootloader)，步骤如下:使用具有 sudo 权限的用户登录你的系统。编辑 /etc/default/grub 文件。设置 GRUB_CMDLINE_LINUX 的值如下：GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1"保存并关闭文件。更新 GRUB。sudo update-grub && reboot需要把磁盘先进行分区，可以不用mkfs，直接fdisk /dev/nvme1n1，n p 1 回车回车 wq即可大于2T的磁盘需要parted改成gptparted /dev/nvme1n1 mklabel GPT mkpart primary 0% 100% quit partprobe然后安装：sudo yum install lvm2 device-mapper-persistent-data1、先创建pvpvcreate /dev/nvme1n1p12、创建vgvgcreate lxd_vg /dev/nvme1n1p13、lxd增加存储lxc storage add lxd_pool lvm source=lxd_vg4、检查添加成功没lxc storage ls5、此时可以控制容量了lxc config device override instance-name root size=4GB5、手动指定IPlxc network attach lxdbr0 a eth0 eth0 lxc config device set a eth0 ipv4.address 192.168.122.10任何device的修改都需要restart容器测试dd if=/dev/zero of=/data01/test.dbf bs=8k count=200000 conv=fdatasync6、IPv6设置lxc network set lxdbr0 ipv6.address=2a12:aaaa:aaaa::1/64 ipv6.nat=false7、其他限制lxc config set a limits.cpu 1 lxc config set a limits.memory 512MB lxc config set a limits.cpu.allowance 30%参考：https://discuss.linuxcontainers.org/t/lxd-on-centos-7/1250https://discuss.linuxcontainers.org/t/using-static-ips-with-lxd/1291/5https://discuss.linuxcontainers.org/t/how-to-set-root-device-size-when-creating-new-instance/15911/2 https://dwt.life/archives/254/ 2022-07-07T21:56:07+08:00 printf 'config: {}\ndevices: {}' | lxc profile edit defaultlxc storage delete defaulthttps://stackoverflow.com/questions/42678979/how-to-remove-default-lxd-storage