Install lxd-agent manually on custom OS?

LXD
1

Hi, I am using VyOS on LXD, which is based on Debian11. but their system image doesn’t have LXD-agent, so I am losing many functions, is there are a proper way to install lxd-agent?

2

You can install below two serivces to install lxd-agent:

  1. lxd-agent-9p
    cat > /lib/systemd/system/lxd-agent-9p.service << EOF
[Unit]
Description=LXD - agent - 9p mount
Documentation=https://linuxcontainers.org/lxd
ConditionPathExists=/dev/virtio-ports/org.linuxcontainers.lxd
After=local-fs.target
DefaultDependencies=no

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStartPre=-/sbin/modprobe 9pnet_virtio
ExecStartPre=/bin/mkdir -p /run/lxd_config/9p
ExecStartPre=/bin/chmod 0700 /run/lxd_config/
ExecStart=/bin/mount -t 9p config /run/lxd_config/9p -o access=0,trans=virtio

[Install]
WantedBy=multi-user.target
EOF
  2. lxd-agent
    cat > /lib/systemd/system/lxd-agent.service << EOF
[Unit]
Description=LXD - agent
Documentation=https://linuxcontainers.org/lxd
ConditionPathExists=/dev/virtio-ports/org.linuxcontainers.lxd
Requires=lxd-agent-9p.service
After=lxd-agent-9p.service
Before=cloud-init.target cloud-init.service cloud-init-local.service
DefaultDependencies=no

[Service]
Type=simple
WorkingDirectory=/run/lxd_config/9p
ExecStart=/run/lxd_config/9p/lxd-agent
Restart=on-failure
RestartSec=5s
StartLimitInterval=60
StartLimitBurst=10

[Install]
WantedBy=multi-user.target
EOF
  3. Enable lxd-agent-9p and lxd-agent
    systemctl enable lxd-agent-9p.service
systemctl enable lxd-agent.service

You can losetup your rootfs image, chroot and do above steps.

3

Thank you for your help first, but it seems that this is the way to do in custom LXC container, but not KVM VM?

------------------ Original ------------------

4

it’s for vm image. BTW, you need to make sure your guest kernel has 9p module support.