605 lines
22 KiB
Python
605 lines
22 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
|
||
|
|
# 3-ova.py - PVC Provisioner example script for OVA install
|
||
|
|
# Part of the Parallel Virtual Cluster (PVC) system
|
||
|
|
#
|
||
|
|
# Copyright (C) 2018-2022 Joshua M. Boniface <joshua@boniface.me>
|
||
|
|
#
|
||
|
|
# This program is free software: you can redistribute it and/or modify
|
||
|
|
# it under the terms of the GNU General Public License as published by
|
||
|
|
# the Free Software Foundation, version 3.
|
||
|
|
#
|
||
|
|
# This program is distributed in the hope that it will be useful,
|
||
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
# GNU General Public License for more details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU General Public License
|
||
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||
|
|
#
|
||
|
|
###############################################################################
|
||
|
|
|
||
|
|
# This script provides an example of a PVC provisioner script. It will create a
|
||
|
|
# custom VM config based on an OVA profile.
|
||
|
|
|
||
|
|
# This script can thus be used as an example or reference implementation of a
|
||
|
|
# PVC provisioner script and expanded upon as required; this specific script is
|
||
|
|
# also hard-coded into a normal PVC provisioner system.
|
||
|
|
|
||
|
|
# The script must implement the class "VMBuilderScript" which extens "VMBuilder",
|
||
|
|
# providing the 5 functions indicated. Detailed explanation of the role of each
|
||
|
|
# function is provided.
|
||
|
|
|
||
|
|
# Within the VMBuilderScript class, several common variables are exposed:
|
||
|
|
# self.vm_name: The name of the VM from PVC's perspective
|
||
|
|
# self.vm_id: The VM ID (numerical component of the vm_name) from PVC's perspective
|
||
|
|
# self.vm_uuid: An automatically-generated UUID for the VM
|
||
|
|
# self.vm_profile: The PVC provisioner profile name used for the VM
|
||
|
|
# self.vm-data: A dictionary of VM data collected by the provisioner; an example:
|
||
|
|
# {
|
||
|
|
# "ceph_monitor_list": [
|
||
|
|
# "hv1.pvcstorage.tld",
|
||
|
|
# "hv2.pvcstorage.tld",
|
||
|
|
# "hv3.pvcstorage.tld"
|
||
|
|
# ],
|
||
|
|
# "ceph_monitor_port": "6789",
|
||
|
|
# "ceph_monitor_secret": "96721723-8650-4a72-b8f6-a93cd1a20f0c",
|
||
|
|
# "mac_template": null,
|
||
|
|
# "networks": [
|
||
|
|
# {
|
||
|
|
# "eth_bridge": "vmbr1001",
|
||
|
|
# "id": 72,
|
||
|
|
# "network_template": 69,
|
||
|
|
# "vni": "1001"
|
||
|
|
# },
|
||
|
|
# {
|
||
|
|
# "eth_bridge": "vmbr101",
|
||
|
|
# "id": 73,
|
||
|
|
# "network_template": 69,
|
||
|
|
# "vni": "101"
|
||
|
|
# }
|
||
|
|
# ],
|
||
|
|
# "script": [contents of this file]
|
||
|
|
# "script_arguments": {
|
||
|
|
# "deb_mirror": "http://ftp.debian.org/debian",
|
||
|
|
# "deb_release": "bullseye"
|
||
|
|
# },
|
||
|
|
# "system_architecture": "x86_64",
|
||
|
|
# "system_details": {
|
||
|
|
# "id": 78,
|
||
|
|
# "migration_method": "live",
|
||
|
|
# "name": "small",
|
||
|
|
# "node_autostart": false,
|
||
|
|
# "node_limit": null,
|
||
|
|
# "node_selector": null,
|
||
|
|
# "ova": null,
|
||
|
|
# "serial": true,
|
||
|
|
# "vcpu_count": 2,
|
||
|
|
# "vnc": false,
|
||
|
|
# "vnc_bind": null,
|
||
|
|
# "vram_mb": 2048
|
||
|
|
# },
|
||
|
|
# "volumes": [
|
||
|
|
# {
|
||
|
|
# "disk_id": "sda",
|
||
|
|
# "disk_size_gb": 4,
|
||
|
|
# "filesystem": "ext4",
|
||
|
|
# "filesystem_args": "-L=root",
|
||
|
|
# "id": 9,
|
||
|
|
# "mountpoint": "/",
|
||
|
|
# "pool": "vms",
|
||
|
|
# "source_volume": null,
|
||
|
|
# "storage_template": 67
|
||
|
|
# },
|
||
|
|
# {
|
||
|
|
# "disk_id": "sdb",
|
||
|
|
# "disk_size_gb": 4,
|
||
|
|
# "filesystem": "ext4",
|
||
|
|
# "filesystem_args": "-L=var",
|
||
|
|
# "id": 10,
|
||
|
|
# "mountpoint": "/var",
|
||
|
|
# "pool": "vms",
|
||
|
|
# "source_volume": null,
|
||
|
|
# "storage_template": 67
|
||
|
|
# },
|
||
|
|
# {
|
||
|
|
# "disk_id": "sdc",
|
||
|
|
# "disk_size_gb": 4,
|
||
|
|
# "filesystem": "ext4",
|
||
|
|
# "filesystem_args": "-L=log",
|
||
|
|
# "id": 11,
|
||
|
|
# "mountpoint": "/var/log",
|
||
|
|
# "pool": "vms",
|
||
|
|
# "source_volume": null,
|
||
|
|
# "storage_template": 67
|
||
|
|
# }
|
||
|
|
# ]
|
||
|
|
# }
|
||
|
|
|
||
|
|
|
||
|
|
# Run any imports first
|
||
|
|
import datetime
|
||
|
|
import random
|
||
|
|
import pvcapid.libvirt_schema as libvirt_schema
|
||
|
|
|
||
|
|
|
||
|
|
class VMBuilderScript(VMBuilder):
|
||
|
|
def setup(self):
|
||
|
|
"""
|
||
|
|
setup(): Perform special setup steps or validation before proceeding
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Ensure we have debootstrap intalled on the provisioner system
|
||
|
|
retcode, stdout, stderr = pvc_common.run_os_command(f"which debootstrap")
|
||
|
|
if retcode:
|
||
|
|
raise ProvisioningError("Failed to find critical dependency: debootstrap")
|
||
|
|
|
||
|
|
def create(self):
|
||
|
|
"""
|
||
|
|
create(): Create the VM libvirt schema definition
|
||
|
|
|
||
|
|
This step *must* return a fully-formed Libvirt XML document as a string.
|
||
|
|
|
||
|
|
This example leverages the built-in libvirt_schema objects provided by PVC; these
|
||
|
|
can be used as-is, or replaced with your own schema(s) on a per-script basis.
|
||
|
|
"""
|
||
|
|
|
||
|
|
schema = ""
|
||
|
|
|
||
|
|
# Prepare a description based on the VM profile
|
||
|
|
description = (
|
||
|
|
f"PVC provisioner @ {datetime.datetime.now()}, profile '{self.vm_profile}'"
|
||
|
|
)
|
||
|
|
|
||
|
|
# Format the header
|
||
|
|
schema += libvirt_schema.libvirt_header.format(
|
||
|
|
vm_name=self.vm_name,
|
||
|
|
vm_uuid=self.vm_uuid,
|
||
|
|
vm_description=description,
|
||
|
|
vm_memory=self.vm_data["system_details"]["vram_mb"],
|
||
|
|
vm_vcpus=self.vm_data["system_details"]["vcpu_count"],
|
||
|
|
vm_architecture=self.vm_data["system_architecture"],
|
||
|
|
)
|
||
|
|
|
||
|
|
# Add the disk devices
|
||
|
|
monitor_list = self.vm_data["ceph_monitor_list"]
|
||
|
|
monitor_port = self.vm_data["ceph_monitor_port"]
|
||
|
|
monitor_secret = self.vm_data["ceph_monitor_secret"]
|
||
|
|
|
||
|
|
for volume in self.vm_data["volumes"]:
|
||
|
|
schema += libvirt_schema.devices_disk_header.format(
|
||
|
|
ceph_storage_secret=monitor_secret,
|
||
|
|
disk_pool=volume["pool"],
|
||
|
|
vm_name=self.vm_name,
|
||
|
|
disk_id=volume["disk_id"],
|
||
|
|
)
|
||
|
|
for monitor in monitor_list:
|
||
|
|
schema += libvirt_schema.devices_disk_coordinator.format(
|
||
|
|
coordinator_name=monitor,
|
||
|
|
coordinator_ceph_mon_port=monitor_port,
|
||
|
|
)
|
||
|
|
schema += libvirt_schema.devices_disk_footer
|
||
|
|
|
||
|
|
# Add the special vhostmd device for hypervisor information inside the VM
|
||
|
|
schema += libvirt_schema.devices_vhostmd
|
||
|
|
|
||
|
|
# Add the network devices
|
||
|
|
network_id = 0
|
||
|
|
for network in self.vm_data["networks"]:
|
||
|
|
vm_id_hex = "{:x}".format(int(vm_id % 16))
|
||
|
|
net_id_hex = "{:x}".format(int(network_id % 16))
|
||
|
|
|
||
|
|
if self.vm_data.get("mac_template") is not None:
|
||
|
|
mac_prefix = "52:54:01"
|
||
|
|
macgen_template = self.vm_data["mac_template"]
|
||
|
|
eth_macaddr = macgen_template.format(
|
||
|
|
prefix=mac_prefix, vmid=vm_id_hex, netid=net_id_hex
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
mac_prefix = "52:54:00"
|
||
|
|
random_octet_A = "{:x}".format(random.randint(16, 238))
|
||
|
|
random_octet_B = "{:x}".format(random.randint(16, 238))
|
||
|
|
random_octet_C = "{:x}".format(random.randint(16, 238))
|
||
|
|
|
||
|
|
macgen_template = "{prefix}:{octetA}:{octetB}:{octetC}"
|
||
|
|
eth_macaddr = macgen_template.format(
|
||
|
|
prefix=mac_prefix,
|
||
|
|
octetA=random_octet_A,
|
||
|
|
octetB=random_octet_B,
|
||
|
|
octetC=random_octet_C,
|
||
|
|
)
|
||
|
|
|
||
|
|
schema += libvirt_schema.devices_net_interface.format(
|
||
|
|
eth_macaddr=eth_macaddr,
|
||
|
|
eth_bridge=eth_bridge,
|
||
|
|
)
|
||
|
|
|
||
|
|
network_id += 1
|
||
|
|
|
||
|
|
# Add default devices
|
||
|
|
schema += libvirt_schema.devices_default
|
||
|
|
|
||
|
|
# Add serial device
|
||
|
|
if self.vm_data["system_details"]["serial"]:
|
||
|
|
schema += libvirt_schema.devices_serial.format(vm_name=self.vm_name)
|
||
|
|
|
||
|
|
# Add VNC device
|
||
|
|
if self.vm_data["system_details"]["vnc"]:
|
||
|
|
if self.vm_data["system_details"]["vnc_bind"]:
|
||
|
|
vm_vnc_bind = self.vm_data["system_details"]["vnc_bind"]
|
||
|
|
else:
|
||
|
|
vm_vnc_bind = "127.0.0.1"
|
||
|
|
|
||
|
|
vm_vncport = 5900
|
||
|
|
vm_vnc_autoport = "yes"
|
||
|
|
|
||
|
|
schema += libvirt_schema.devices_vnc.format(
|
||
|
|
vm_vncport=vm_vncport,
|
||
|
|
vm_vnc_autoport=vm_vnc_autoport,
|
||
|
|
vm_vnc_bind=vm_vnc_bind,
|
||
|
|
)
|
||
|
|
|
||
|
|
# Add SCSI controller
|
||
|
|
schema += libvirt_schema.devices_scsi_controller
|
||
|
|
|
||
|
|
# Add footer
|
||
|
|
schema += libvirt_schema.libvirt_footer
|
||
|
|
|
||
|
|
return schema
|
||
|
|
|
||
|
|
def prepare(self):
|
||
|
|
"""
|
||
|
|
prepare(): Prepare any disks/volumes for the install() step
|
||
|
|
|
||
|
|
This function should use the various exposed PVC commands as indicated to create
|
||
|
|
block devices and map them to the host.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# First loop: Create the disks, either by cloning (pvc_ceph.clone_volume), or by
|
||
|
|
# new creation (pvc_ceph.add_volume).
|
||
|
|
for volume in self.vm_data["volumes"]:
|
||
|
|
if volume.get("source_volume") is not None:
|
||
|
|
with open_zk(config) as zkhandler:
|
||
|
|
success, message = pvc_ceph.clone_volume(
|
||
|
|
zkhandler,
|
||
|
|
volume["pool"],
|
||
|
|
volume["source_volume"],
|
||
|
|
f"{self.vm_name}_{volume['disk_id']}",
|
||
|
|
)
|
||
|
|
print(message)
|
||
|
|
if not success:
|
||
|
|
raise ProvisioningError(
|
||
|
|
f"Failed to clone volume '{volume['source_volume']}' to '{volume['disk_id']}'."
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
with open_zk(config) as zkhandler:
|
||
|
|
success, message = pvc_ceph.add_volume(
|
||
|
|
zkhandler,
|
||
|
|
volume["pool"],
|
||
|
|
f"{self.vm_name}_{volume['disk_id']}",
|
||
|
|
f"{volume['disk_size_gb']}G",
|
||
|
|
)
|
||
|
|
print(message)
|
||
|
|
if not success:
|
||
|
|
raise ProvisioningError(
|
||
|
|
f"Failed to create volume '{volume['disk_id']}'."
|
||
|
|
)
|
||
|
|
|
||
|
|
# Second loop: Map the disks to the local system
|
||
|
|
for volume in self.vm_data["volumes"]:
|
||
|
|
dst_volume_name = f"{self.vm_name}_{volume['disk_id']}"
|
||
|
|
dst_volume = f"{volume['pool']}/{dst_volume_name}"
|
||
|
|
|
||
|
|
with open_zk(config) as zkhandler:
|
||
|
|
success, message = pvc_ceph.map_volume(
|
||
|
|
zkhandler,
|
||
|
|
volume["pool"],
|
||
|
|
dst_volume_name,
|
||
|
|
)
|
||
|
|
print(message)
|
||
|
|
if not retcode:
|
||
|
|
raise ProvisioningError(f"Failed to map volume '{dst_volume}'.")
|
||
|
|
|
||
|
|
# Third loop: Create filesystems on the volumes
|
||
|
|
for volume in self.vm_data["volumes"]:
|
||
|
|
dst_volume_name = f"{self.vm_name}_{volume['disk_id']}"
|
||
|
|
dst_volume = f"{volume['pool']}/{dst_volume_name}"
|
||
|
|
|
||
|
|
if volume.get("source_volume") is not None:
|
||
|
|
continue
|
||
|
|
|
||
|
|
if volume.get("filesystem") is None:
|
||
|
|
continue
|
||
|
|
|
||
|
|
filesystem_args_list = list()
|
||
|
|
for arg in volume["filesystem_args"].split():
|
||
|
|
arg_entry, *arg_data = arg.split("=")
|
||
|
|
arg_data = "=".join(arg_data)
|
||
|
|
filesystem_args_list.append(arg_entry)
|
||
|
|
filesystem_args_list.append(arg_data)
|
||
|
|
filesystem_args = " ".join(filesystem_args_list)
|
||
|
|
|
||
|
|
if volume["filesystem"] == "swap":
|
||
|
|
retcode, stdout, stderr = pvc_common.run_os_command(
|
||
|
|
f"mkswap -f /dev/rbd/{dst_volume}"
|
||
|
|
)
|
||
|
|
if retcode:
|
||
|
|
raise ProvisioningError(
|
||
|
|
f"Failed to create swap on '{dst_volume}': {stderr}"
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
retcode, stdout, stderr = pvc_common.run_os_command(
|
||
|
|
f"mkfs.{volume['filesystem']} {filesystem_args} /dev/rbd/{dst_volume}"
|
||
|
|
)
|
||
|
|
if retcode:
|
||
|
|
raise ProvisioningError(
|
||
|
|
f"Faield to create {volume['filesystem']} file on '{dst_volume}': {stderr}"
|
||
|
|
)
|
||
|
|
|
||
|
|
print(stdout)
|
||
|
|
|
||
|
|
# Create a temporary directory to use during install
|
||
|
|
temp_dir = "/tmp/target"
|
||
|
|
if not os.exists(temp_dir):
|
||
|
|
os.mkdir(temp_dir)
|
||
|
|
|
||
|
|
# Fourth loop: Mount the volumes to a set of temporary directories
|
||
|
|
for volume in self.vm_data["volumes"]:
|
||
|
|
dst_volume_name = f"{self.vm_name}_{volume['disk_id']}"
|
||
|
|
dst_volume = f"{volume['pool']}/{dst_volume_name}"
|
||
|
|
|
||
|
|
if volume.get("source_volume") is not None:
|
||
|
|
continue
|
||
|
|
|
||
|
|
if volume.get("filesystem") is None:
|
||
|
|
continue
|
||
|
|
|
||
|
|
mapped_dst_volume = f"/dev/rbd/{dst_volume}"
|
||
|
|
|
||
|
|
mount_path = f"{temp_dir}/{volume['mountpoint']}"
|
||
|
|
|
||
|
|
if not os.exists(mount_path):
|
||
|
|
os.mkdir(mount_path)
|
||
|
|
|
||
|
|
# Mount filesystem
|
||
|
|
retcode, stdout, stderr = pvc_common.run_os_command(
|
||
|
|
f"mount {mapped_dst_volume} {mount_path}"
|
||
|
|
)
|
||
|
|
if retcode:
|
||
|
|
raise ProvisioningError(
|
||
|
|
f"Failed to mount '{mapped_dst_volume}' on '{mount_path}': {stderr}"
|
||
|
|
)
|
||
|
|
|
||
|
|
def install(self):
|
||
|
|
"""
|
||
|
|
install(): Perform the installation
|
||
|
|
|
||
|
|
Since this is a noop example, this step does nothing, aside from getting some
|
||
|
|
arguments for demonstration.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# The directory we mounted things on earlier during prepare()
|
||
|
|
temporary_directory = "/tmp/target"
|
||
|
|
|
||
|
|
# Use these convenient aliases for later (avoiding lots of "self.vm_data" everywhere)
|
||
|
|
vm_name = self.vm_name
|
||
|
|
disks = self.vm_data["disks"]
|
||
|
|
networks = self.vm_data["networks"]
|
||
|
|
|
||
|
|
# Parse these arguments out of self.vm_data["script_arguments"]
|
||
|
|
if self.vm_data["script_arguments"].get("deb_release") is not None:
|
||
|
|
deb_release = self.vm_data["script_arguments"].get("deb_release")
|
||
|
|
else:
|
||
|
|
deb_release = "stable"
|
||
|
|
|
||
|
|
if self.vm_data["script_arguments"].get("deb_mirror") is not None:
|
||
|
|
deb_mirror = self.vm_data["script_arguments"].get("deb_mirror")
|
||
|
|
else:
|
||
|
|
deb_mirror = "http://ftp.debian.org/debian"
|
||
|
|
|
||
|
|
if self.vm_data["script_arguments"].get("deb_packages") is not None:
|
||
|
|
deb_packages = (
|
||
|
|
self.vm_data["script_arguments"].get("deb_packages").split(",")
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
deb_packages = [
|
||
|
|
"linux-image-amd64",
|
||
|
|
"grub-pc",
|
||
|
|
"cloud-init",
|
||
|
|
"python3-cffi-backend",
|
||
|
|
"wget",
|
||
|
|
]
|
||
|
|
|
||
|
|
# We need to know our root disk
|
||
|
|
root_disk = None
|
||
|
|
for disk in disks:
|
||
|
|
if disk["mountpoint"] == "/":
|
||
|
|
root_disk = disk
|
||
|
|
if not root_disk:
|
||
|
|
raise ProvisioningError("Failed to find root disk in disks list")
|
||
|
|
|
||
|
|
# Perform a deboostrap installation
|
||
|
|
os.system(
|
||
|
|
"debootstrap --include={pkgs} {suite} {target} {mirror}".format(
|
||
|
|
suite=deb_release,
|
||
|
|
target=temporary_directory,
|
||
|
|
mirror=deb_mirror,
|
||
|
|
pkgs=",".join(deb_packages),
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
# Bind mount the devfs
|
||
|
|
os.system("mount --bind /dev {}/dev".format(temporary_directory))
|
||
|
|
|
||
|
|
# Create an fstab entry for each disk
|
||
|
|
fstab_file = "{}/etc/fstab".format(temporary_directory)
|
||
|
|
# The disk ID starts at zero and increments by one for each disk in the fixed-order
|
||
|
|
# disk list. This lets us work around the insanity of Libvirt IDs not matching guest IDs,
|
||
|
|
# while still letting us have some semblance of control here without enforcing things
|
||
|
|
# like labels. It increments in the for loop below at the end of each iteration, and is
|
||
|
|
# used to craft a /dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-X device ID
|
||
|
|
# which will always match the correct order from Libvirt (unlike sdX/vdX names).
|
||
|
|
disk_id = 0
|
||
|
|
for disk in disks:
|
||
|
|
# We assume SSD-based/-like storage, and dislike atimes
|
||
|
|
options = "defaults,discard,noatime,nodiratime"
|
||
|
|
|
||
|
|
# The root, var, and log volumes have specific values
|
||
|
|
if disk["mountpoint"] == "/":
|
||
|
|
root_disk["scsi_id"] = disk_id
|
||
|
|
dump = 0
|
||
|
|
cpass = 1
|
||
|
|
elif disk["mountpoint"] == "/var" or disk["mountpoint"] == "/var/log":
|
||
|
|
dump = 0
|
||
|
|
cpass = 2
|
||
|
|
else:
|
||
|
|
dump = 0
|
||
|
|
cpass = 0
|
||
|
|
|
||
|
|
# Append the fstab line
|
||
|
|
with open(fstab_file, "a") as fh:
|
||
|
|
data = "/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-{disk} {mountpoint} {filesystem} {options} {dump} {cpass}\n".format(
|
||
|
|
disk=disk_id,
|
||
|
|
mountpoint=disk["mountpoint"],
|
||
|
|
filesystem=disk["filesystem"],
|
||
|
|
options=options,
|
||
|
|
dump=dump,
|
||
|
|
cpass=cpass,
|
||
|
|
)
|
||
|
|
fh.write(data)
|
||
|
|
|
||
|
|
# Increment the disk_id
|
||
|
|
disk_id += 1
|
||
|
|
|
||
|
|
# Write the hostname
|
||
|
|
hostname_file = "{}/etc/hostname".format(temporary_directory)
|
||
|
|
with open(hostname_file, "w") as fh:
|
||
|
|
fh.write("{}".format(vm_name))
|
||
|
|
|
||
|
|
# Fix the cloud-init.target since it's broken
|
||
|
|
cloudinit_target_file = "{}/etc/systemd/system/cloud-init.target".format(
|
||
|
|
temporary_directory
|
||
|
|
)
|
||
|
|
with open(cloudinit_target_file, "w") as fh:
|
||
|
|
data = """[Install]
|
||
|
|
WantedBy=multi-user.target
|
||
|
|
[Unit]
|
||
|
|
Description=Cloud-init target
|
||
|
|
After=multi-user.target
|
||
|
|
"""
|
||
|
|
fh.write(data)
|
||
|
|
|
||
|
|
# NOTE: Due to device ordering within the Libvirt XML configuration, the first Ethernet interface
|
||
|
|
# will always be on PCI bus ID 2, hence the name "ens2".
|
||
|
|
# Write a DHCP stanza for ens2
|
||
|
|
ens2_network_file = "{}/etc/network/interfaces.d/ens2".format(
|
||
|
|
temporary_directory
|
||
|
|
)
|
||
|
|
with open(ens2_network_file, "w") as fh:
|
||
|
|
data = """auto ens2
|
||
|
|
iface ens2 inet dhcp
|
||
|
|
"""
|
||
|
|
fh.write(data)
|
||
|
|
|
||
|
|
# Write the DHCP config for ens2
|
||
|
|
dhclient_file = "{}/etc/dhcp/dhclient.conf".format(temporary_directory)
|
||
|
|
with open(dhclient_file, "w") as fh:
|
||
|
|
data = (
|
||
|
|
"""# DHCP client configuration
|
||
|
|
# Written by the PVC provisioner
|
||
|
|
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
|
||
|
|
interface "ens2" {
|
||
|
|
"""
|
||
|
|
+ """ send fqdn.fqdn = "{hostname}";
|
||
|
|
send host-name = "{hostname}";
|
||
|
|
""".format(
|
||
|
|
hostname=vm_name
|
||
|
|
)
|
||
|
|
+ """ request subnet-mask, broadcast-address, time-offset, routers,
|
||
|
|
domain-name, domain-name-servers, domain-search, host-name,
|
||
|
|
dhcp6.name-servers, dhcp6.domain-search, dhcp6.fqdn, dhcp6.sntp-servers,
|
||
|
|
netbios-name-servers, netbios-scope, interface-mtu,
|
||
|
|
rfc3442-classless-static-routes, ntp-servers;
|
||
|
|
}
|
||
|
|
"""
|
||
|
|
)
|
||
|
|
fh.write(data)
|
||
|
|
|
||
|
|
# Write the GRUB configuration
|
||
|
|
grubcfg_file = "{}/etc/default/grub".format(temporary_directory)
|
||
|
|
with open(grubcfg_file, "w") as fh:
|
||
|
|
data = """# Written by the PVC provisioner
|
||
|
|
GRUB_DEFAULT=0
|
||
|
|
GRUB_TIMEOUT=1
|
||
|
|
GRUB_DISTRIBUTOR="PVC Virtual Machine"
|
||
|
|
GRUB_CMDLINE_LINUX_DEFAULT="root=/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-{root_disk} console=tty0 console=ttyS0,115200n8"
|
||
|
|
GRUB_CMDLINE_LINUX=""
|
||
|
|
GRUB_TERMINAL=console
|
||
|
|
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"
|
||
|
|
GRUB_DISABLE_LINUX_UUID=false
|
||
|
|
""".format(
|
||
|
|
root_disk=root_disk["scsi_id"]
|
||
|
|
)
|
||
|
|
fh.write(data)
|
||
|
|
|
||
|
|
# Chroot, do some in-root tasks, then exit the chroot
|
||
|
|
with chroot_target(temporary_directory):
|
||
|
|
# Install and update GRUB
|
||
|
|
os.system(
|
||
|
|
"grub-install --force /dev/rbd/{}/{}_{}".format(
|
||
|
|
root_disk["pool"], vm_name, root_disk["disk_id"]
|
||
|
|
)
|
||
|
|
)
|
||
|
|
os.system("update-grub")
|
||
|
|
# Set a really dumb root password [TEMPORARY]
|
||
|
|
os.system("echo root:test123 | chpasswd")
|
||
|
|
# Enable cloud-init target on (first) boot
|
||
|
|
# NOTE: Your user-data should handle this and disable it once done, or things get messy.
|
||
|
|
# That cloud-init won't run without this hack seems like a bug... but even the official
|
||
|
|
# Debian cloud images are affected, so who knows.
|
||
|
|
os.system("systemctl enable cloud-init.target")
|
||
|
|
|
||
|
|
# Unmount the bound devfs
|
||
|
|
os.system("umount {}/dev".format(temporary_directory))
|
||
|
|
|
||
|
|
def cleanup(self):
|
||
|
|
"""
|
||
|
|
cleanup(): Perform any cleanup required due to prepare()/install()
|
||
|
|
|
||
|
|
It is important to now reverse *all* steps taken in those functions that might
|
||
|
|
need cleanup before teardown of the overlay chroot environment.
|
||
|
|
"""
|
||
|
|
|
||
|
|
temp_dir = "/tmp/target"
|
||
|
|
|
||
|
|
for volume in list(reversed(self.vm_data["volumes"])):
|
||
|
|
dst_volume_name = f"{self.vm_name}_{volume['disk_id']}"
|
||
|
|
dst_volume = f"{volume['pool']}/{dst_volume_name}"
|
||
|
|
mapped_dst_volume = f"/dev/rbd/{dst_volume}"
|
||
|
|
mount_path = f"{temp_dir}/{volume['mountpoint']}"
|
||
|
|
|
||
|
|
if (
|
||
|
|
volume.get("source_volume") is None
|
||
|
|
and volume.get("filesystem") is not None
|
||
|
|
):
|
||
|
|
# Unmount filesystem
|
||
|
|
retcode, stdout, stderr = pvc_common.run_os_command(
|
||
|
|
f"umount {mount_path}"
|
||
|
|
)
|
||
|
|
if retcode:
|
||
|
|
raise ProvisioningError(
|
||
|
|
f"Failed to unmount '{mapped_dst_volume}' on '{mount_path}': {stderr}"
|
||
|
|
)
|
||
|
|
|
||
|
|
# Unmap volume
|
||
|
|
with open_zk(config) as zkhandler:
|
||
|
|
success, message = pvc_ceph.unmap_volume(
|
||
|
|
zkhandler,
|
||
|
|
volume["pool"],
|
||
|
|
dst_volume_name,
|
||
|
|
)
|
||
|
|
if not success:
|
||
|
|
raise ProvisioningError(
|
||
|
|
f"Failed to unmap '{mapped_dst_volume}': {stderr}"
|
||
|
|
)
|