This article will describe installing LXD and running containers.
Table of Contents
1 Install LXD
Install these packages for LXD.
$ sudo apt install -y lxd lxd-client lxd-tools criu
Install this package if you use ZFS.
$ sudo apt install -y zfsutils-linux
Wait LXD daemon starting.
$ sudo lxd waitready
Initialize LXD with the following command.
$ sudo lxd init Would you like to use LXD clustering? (yes/no) [default=no]: no Do you want to configure a new storage pool? (yes/no) [default=yes]: yes Name of the new storage pool [default=default]: default Name of the storage backend to use (dir, lvm, zfs) [default=zfs]: dir Would you like to connect to a MAAS server? (yes/no) [default=no]: no Would you like to create a new network bridge? (yes/no) [default=yes]: yes What should the new bridge be called? [default=lxdbr0]: lxdbr0 What IPv4 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]: auto What IPv6 address should be used? (CIDR subnet notation, “auto” or “none”) [default=auto]: none Would you like LXD to be available over the network? (yes/no) [default=no]: no Would you like stale cached images to be updated automatically? (yes/no) [default=yes] yes Would you like a YAML "lxd init" preseed to be printed? (yes/no) [default=no]: no
You can use pipe for automatic initialization.
$ cat <<EOF | sudo lxd init no yes default dir no yes lxdbr0 auto none no yes no EOF
The users in lxd group can run lxd without sudo command. After adding user to lxd group, restart machine.
$ sudo gpasswd -a "${USER}" lxd
$ sudo reboot
2 Run container
"lxc launch" is combined with "lxc init" and "lxc start". "lxc exec" runs command on container.
$ lxc launch images:debian/stretch debian
<snip>
$ lxc exec debian ip a s
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default qlen 1
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
5:eth0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP group default qlen 1000
link/ether 00:16:3e:3c:1d:23 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 10.26.102.87/24 brd 10.26.102.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fd42:6bb1:545e:554b:216:3eff:fe3c:1d23/64 scope global
mngtmpaddr dynamic
valid_lft 3596sec preferred_lft 3596sec
inet6 fe80::216:3eff:fe3c:1d23/64 scope link
valid_lft forever preferred_lft forever
"lxc launch" is equal with the following "lxc init" and "lxc start". "lxc init" creates container. "lxc start" starts container.
$ lxc init images:debian/stretch debian $ lxc start debian $ lxc exec debian ip a s