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Port VM autobackups into pvcworkerd with snaps 

Moves VM autobackups from being in-CLI to being handled by the
pvcworkerd system on the primary coordinator. Turns the CLI autobackup
command into an actual API client endpoint rather than having its logic
in the CLI.

In addition, modifies the new autobackup to leverage the new "pvc vm
snapshot" function set, just with special snapshot names. This helps
automate this within the new snapshot scaffolding.
This commit is contained in:
Joshua Boniface 2024-08-23 17:01:31 -04:00
parent fd199f405b
commit 0d918d66fe
7 changed files with 686 additions and 504 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
api-daemon/pvcapid/flaskapi.py
View File

@ -3515,6 +3515,70 @@ class API_VM_Snapshot_Import(Resource):
api.add_resource(API_VM_Snapshot_Import, "/vm/<vm>/snapshot/import")
# /vm/autobackup
class API_VM_Autobackup_Root(Resource):
@RequestParser(
[
{"name": "force_full"},
{"name": "email_recipients"},
]
)
@Authenticator
def post(self, reqargs):
"""
Trigger a cluster autobackup job
---
tags:
- provisioner
parameters:
- in: query
name: force_full
type: boolean
required: false
description: If set and true, triggers a full autobackup regardless of schedule
- in: query
name: email_recipients
type: array
description: A list of email addresses to send failure and report emails to
items:
type: string
example: "user@domain.tld"
responses:
200:
description: OK
schema:
type: object
properties:
task_id:
type: string
description: Task ID for the provisioner Celery worker
400:
description: Bad request
schema:
type: object
id: Message
"""
task = run_celery_task(
"cluster.autobackup",
force_full=reqargs.get("force_full", False),
email_recipients=reqargs.get("email_recipients", None),
run_on="primary",
)
return (
{
"task_id": task.id,
"task_name": "cluster.autobackup",
"run_on": f"{get_primary_node()} (primary)",
},
202,
{"Location": Api.url_for(api, API_Tasks_Element, task_id=task.id)},
)
api.add_resource(API_VM_Autobackup_Root, "/vm/autobackup")
##########################################################
# Client API - Network
##########################################################
@ -5070,7 +5134,7 @@ class API_Storage_Ceph_Benchmark(Resource):
{
"task_id": task.id,
"task_name": "storage.benchmark",
"run_on": get_primary_node(),
"run_on": f"{get_primary_node()} (primary)",
},
202,
{"Location": Api.url_for(api, API_Tasks_Element, task_id=task.id)},
@ -9326,7 +9390,7 @@ class API_Provisioner_Create_Root(Resource):
{
"task_id": task.id,
"task_name": "provisioner.create",
"run_on": get_primary_node(),
"run_on": f"{get_primary_node()} (primary)",
},
202,
{"Location": Api.url_for(api, API_Tasks_Element, task_id=task.id)},

74
client-cli/pvc/cli/cli.py
View File

@ -1749,7 +1749,7 @@ def cli_vm_unmigrate(domain, wait, force_live):
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
def cli_vm_flush_locks(domain, wait_flag):
"""
@ -1793,7 +1793,7 @@ def cli_vm_snapshot():
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
def cli_vm_snapshot_create(domain, snapshot_name, wait_flag):
"""
@ -1827,7 +1827,7 @@ def cli_vm_snapshot_create(domain, snapshot_name, wait_flag):
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt("Remove shapshot {snapshot_name} of VM {domain}")
def cli_vm_snapshot_remove(domain, snapshot_name, wait_flag):
@ -1860,7 +1860,7 @@ def cli_vm_snapshot_remove(domain, snapshot_name, wait_flag):
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt(
"Roll back to snapshot {snapshot_name} of {domain} and lose all data and changes since this snapshot"
@ -1903,7 +1903,7 @@ def cli_vm_snapshot_rollback(domain, snapshot_name, wait_flag):
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
def cli_vm_snapshot_export(
domain, snapshot_name, export_path, incremental_parent, wait_flag
@ -1957,7 +1957,7 @@ def cli_vm_snapshot_export(
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
def cli_vm_snapshot_import(
domain, snapshot_name, import_path, retain_snapshot, wait_flag
@ -2149,15 +2149,6 @@ def cli_vm_backup_remove(domain, backup_datestring, backup_path):
name="autobackup", short_help="Perform automatic virtual machine backups."
)
@connection_req
@click.option(
"-f",
"--configuration",
"autobackup_cfgfile",
envvar="PVC_AUTOBACKUP_CFGFILE",
default=DEFAULT_AUTOBACKUP_FILENAME,
show_default=True,
help="Override default config file location.",
)
@click.option(
"--email-report",
"email_report",
@ -2172,38 +2163,31 @@ def cli_vm_backup_remove(domain, backup_datestring, backup_path):
help="Force all backups to be full backups this run.",
)
@click.option(
"--cron",
"cron_flag",
default=False,
"--wait/--no-wait",
"wait_flag",
is_flag=True,
help="Cron mode; don't error exit if this isn't the primary coordinator.",
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress if waiting",
)
def cli_vm_autobackup(autobackup_cfgfile, email_report, force_full_flag, cron_flag):
def cli_vm_autobackup(email_report, force_full_flag, wait_flag):
"""
Perform automated backups of VMs, with integrated cleanup and full/incremental scheduling.
This command enables automatic backup of PVC VMs at the block level, leveraging the various "pvc vm backup"
This command enables automatic backup of PVC VMs at the block level, leveraging the various "pvc vm snapshot"
functions with an internal rentention and cleanup system as well as determination of full vs. incremental
backups at different intervals. VMs are selected based on configured VM tags. The destination storage
may either be local, or provided by a remote filesystem which is automatically mounted and unmounted during
the backup run via a set of configured commands before and after the backup run.
NOTE: This command performs its tasks in a local context. It MUST be run from the cluster's active primary
coordinator using the "local" connection only; if either is not correct, the command will error.
NOTE: This command should be run as the same user as the API daemon, usually "root" with "sudo -E" or in
a cronjob as "root", to ensure permissions are correct on the backup files. Failure to do so will still take
the backup, but the state update write will likely fail and the backup will become untracked. The command
will prompt for confirmation if it is found not to be running as "root" and this cannot be bypassed.
This command should be run from cron or a timer at a regular interval (e.g. daily, hourly, etc.) which defines
how often backups are taken. Backup format (full/incremental) and retention is based only on the number of
recorded backups, not on the time interval between them. Backups taken manually outside of the "autobackup"
command are not counted towards the format or retention of autobackups.
The PVC_AUTOBACKUP_CFGFILE envvar or "-f"/"--configuration" option can be used to override the default
configuration file path if required by a particular run. For full details of the possible options, please
see the example configuration file at "/usr/share/pvc/autobackup.sample.yaml".
The actual details of the autobackup, including retention policies, full-vs-incremental, pre- and post- run
mounting/unmounting commands, etc. are defined in the main PVC configuration file `/etc/pvc/pvc.conf`. See
the sample configuration for more details.
An optional report on all current backups can be emailed to one or more email addresses using the
"--email-report" flag. This report will include information on all current known backups.
@ -2212,11 +2196,17 @@ def cli_vm_autobackup(autobackup_cfgfile, email_report, force_full_flag, cron_fl
which can help synchronize the backups of existing VMs with new ones.
"""
# All work here is done in the helper function for portability; we don't even use "finish"
vm_autobackup(
CLI_CONFIG, autobackup_cfgfile, email_report, force_full_flag, cron_flag
retcode, retmsg = pvc.lib.vm.vm_autobackup(
CLI_CONFIG,
email_recipients=email_report,
force_full_flag=force_full_flag,
wait_flag=wait_flag,
)
if retcode and wait_flag:
retmsg = wait_for_celery_task(CLI_CONFIG, retmsg)
finish(retcode, retmsg)
###############################################################################
# > pvc vm tag
@ -3722,7 +3712,7 @@ def cli_storage_benchmark():
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt(
"Storage benchmarks take approximately 10 minutes to run and generate significant load on the cluster; they should be run sparingly. Continue"
@ -3811,7 +3801,7 @@ def cli_storage_osd():
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt(
"Destroy all data on and create a new OSD database volume group on node {node} device {device}"
@ -3886,7 +3876,7 @@ def cli_storage_osd_create_db_vg(node, device, wait_flag):
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt("Destroy all data on and create new OSD(s) on node {node} device {device}")
def cli_storage_osd_add(
@ -3969,7 +3959,7 @@ def cli_storage_osd_add(
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt(
"Destroy all data on and replace OSD {osdid} (and peer split OSDs) with new device {new_device}"
@ -4024,7 +4014,7 @@ def cli_storage_osd_replace(
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt("Refresh OSD {osdid} (and peer split OSDs) on device {device}")
def cli_storage_osd_refresh(osdid, device, wait_flag):
@ -4069,7 +4059,7 @@ def cli_storage_osd_refresh(osdid, device, wait_flag):
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
@confirm_opt("Remove and destroy data on OSD {osdid}")
def cli_storage_osd_remove(osdid, force_flag, wait_flag):
@ -6121,7 +6111,7 @@ def cli_provisioner_profile_list(limit, format_function):
is_flag=True,
default=True,
show_default=True,
help="Wait or don't wait for task to complete, showing progress",
help="Wait or don't wait for task to complete, showing progress if waiting",
)
def cli_provisioner_create(
name, profile, define_flag, start_flag, script_args, wait_flag

461
client-cli/pvc/cli/helpers.py
View File

@ -20,26 +20,16 @@
###############################################################################
from click import echo as click_echo
from click import confirm
from datetime import datetime
from distutils.util import strtobool
from getpass import getuser
from json import load as jload
from json import dump as jdump
from os import chmod, environ, getpid, path, popen, makedirs, get_terminal_size
from re import findall
from os import chmod, environ, getpid, path, get_terminal_size
from socket import gethostname
from subprocess import run, PIPE
from sys import argv
from syslog import syslog, openlog, closelog, LOG_AUTH
from yaml import load as yload
from yaml import SafeLoader
import pvc.lib.provisioner
import pvc.lib.vm
import pvc.lib.node
import pvc.lib.storage
DEFAULT_STORE_DATA = {"cfgfile": "/etc/pvc/pvc.conf"}
DEFAULT_STORE_FILENAME = "pvc.json"
@ -196,452 +186,3 @@ def update_store(store_path, store_data):
with open(store_file, "w") as fh:
jdump(store_data, fh, sort_keys=True, indent=4)
def get_autobackup_config(CLI_CONFIG, cfgfile):
try:
config = dict()
with open(cfgfile) as fh:
full_config = yload(fh, Loader=SafeLoader)
backup_config = full_config["autobackup"]
config["backup_root_path"] = backup_config["backup_root_path"]
config["backup_root_suffix"] = backup_config["backup_root_suffix"]
config["backup_tags"] = backup_config["backup_tags"]
config["backup_schedule"] = backup_config["backup_schedule"]
config["auto_mount_enabled"] = backup_config["auto_mount"]["enabled"]
if config["auto_mount_enabled"]:
config["mount_cmds"] = list()
_mount_cmds = backup_config["auto_mount"]["mount_cmds"]
for _mount_cmd in _mount_cmds:
if "{backup_root_path}" in _mount_cmd:
_mount_cmd = _mount_cmd.format(
backup_root_path=backup_config["backup_root_path"]
)
config["mount_cmds"].append(_mount_cmd)
config["unmount_cmds"] = list()
_unmount_cmds = backup_config["auto_mount"]["unmount_cmds"]
for _unmount_cmd in _unmount_cmds:
if "{backup_root_path}" in _unmount_cmd:
_unmount_cmd = _unmount_cmd.format(
backup_root_path=backup_config["backup_root_path"]
)
config["unmount_cmds"].append(_unmount_cmd)
except FileNotFoundError:
return "Backup configuration does not exist!"
except KeyError as e:
return f"Backup configuration is invalid: {e}"
return config
def vm_autobackup(
CLI_CONFIG,
autobackup_cfgfile=DEFAULT_AUTOBACKUP_FILENAME,
email_report=None,
force_full_flag=False,
cron_flag=False,
):
"""
Perform automatic backups of VMs based on an external config file.
"""
backup_summary = dict()
if email_report is not None:
from email.utils import formatdate
from socket import gethostname
try:
with open(autobackup_cfgfile) as fh:
tmp_config = yload(fh, Loader=SafeLoader)
cluster = tmp_config["cluster"]["name"]
except Exception:
cluster = "unknown"
def send_execution_failure_report(error=None):
echo(CLI_CONFIG, f"Sending email failure report to {email_report}")
current_datetime = datetime.now()
email_datetime = formatdate(float(current_datetime.strftime("%s")))
email = list()
email.append(f"Date: {email_datetime}")
email.append(f"Subject: PVC Autobackup execution failure for cluster {cluster}")
recipients = list()
for recipient in email_report.split(","):
recipients.append(f"<{recipient}>")
email.append(f"To: {', '.join(recipients)}")
email.append(f"From: PVC Autobackup System <pvc@{gethostname()}>")
email.append("")
email.append(
f"A PVC autobackup has FAILED at {current_datetime} due to an execution error."
)
email.append("")
email.append("The reported error message is:")
email.append(f" {error}")
try:
p = popen("/usr/sbin/sendmail -t", "w")
p.write("\n".join(email))
p.close()
except Exception as e:
echo(CLI_CONFIG, f"Failed to send report email: {e}")
# Validate that we are running on the current primary coordinator of the 'local' cluster connection
real_connection = CLI_CONFIG["connection"]
CLI_CONFIG["connection"] = "local"
retcode, retdata = pvc.lib.node.node_info(CLI_CONFIG, DEFAULT_NODE_HOSTNAME)
if not retcode or retdata.get("coordinator_state") != "primary":
if cron_flag:
echo(
CLI_CONFIG,
"Current host is not the primary coordinator of the local cluster and running in cron mode. Exiting cleanly.",
)
exit(0)
else:
echo(
CLI_CONFIG,
f"ERROR: Current host is not the primary coordinator of the local cluster; got connection '{real_connection}', host '{DEFAULT_NODE_HOSTNAME}'.",
)
echo(
CLI_CONFIG,
"Autobackup MUST be run from the cluster active primary coordinator using the 'local' connection. See '-h'/'--help' for details.",
)
if email_report is not None:
send_execution_failure_report(
error=f"Autobackup run attempted from non-local connection or non-primary coordinator; got connection '{real_connection}', host '{DEFAULT_NODE_HOSTNAME}'."
)
exit(1)
# Ensure we're running as root, or show a warning & confirmation
if getuser() != "root":
confirm(
"WARNING: You are not running this command as 'root'. This command should be run under the same user as the API daemon, which is usually 'root'. Are you sure you want to continue?",
prompt_suffix=" ",
abort=True,
)
# Load our YAML config
autobackup_config = get_autobackup_config(CLI_CONFIG, autobackup_cfgfile)
if not isinstance(autobackup_config, dict):
echo(CLI_CONFIG, f"ERROR: {autobackup_config}")
if email_report is not None:
send_execution_failure_report(error=f"{autobackup_config}")
exit(1)
# Get the start time of this run
autobackup_start_time = datetime.now()
# Get a list of all VMs on the cluster
# We don't do tag filtering here, because we could match an arbitrary number of tags; instead, we
# parse the list after
retcode, retdata = pvc.lib.vm.vm_list(CLI_CONFIG, None, None, None, None, None)
if not retcode:
echo(CLI_CONFIG, f"ERROR: Failed to fetch VM list: {retdata}")
if email_report is not None:
send_execution_failure_report(error=f"Failed to fetch VM list: {retdata}")
exit(1)
cluster_vms = retdata
# Parse the list to match tags; too complex for list comprehension alas
backup_vms = list()
for vm in cluster_vms:
vm_tag_names = [t["name"] for t in vm["tags"]]
matching_tags = (
True
if len(
set(vm_tag_names).intersection(set(autobackup_config["backup_tags"]))
)
> 0
else False
)
if matching_tags:
backup_vms.append(vm["name"])
if len(backup_vms) < 1:
echo(CLI_CONFIG, "Found no suitable VMs for autobackup.")
exit(0)
# Pretty print the names of the VMs we'll back up (to stderr)
maxnamelen = max([len(n) for n in backup_vms]) + 2
cols = 1
while (cols * maxnamelen + maxnamelen + 2) <= MAX_CONTENT_WIDTH:
cols += 1
rows = len(backup_vms) // cols
vm_list_rows = list()
for row in range(0, rows + 1):
row_start = row * cols
row_end = (row * cols) + cols
row_str = ""
for x in range(row_start, row_end):
if x < len(backup_vms):
row_str += "{:<{}}".format(backup_vms[x], maxnamelen)
vm_list_rows.append(row_str)
echo(CLI_CONFIG, f"Found {len(backup_vms)} suitable VM(s) for autobackup.")
echo(CLI_CONFIG, "Full VM list:", stderr=True)
echo(CLI_CONFIG, " {}".format("\n ".join(vm_list_rows)), stderr=True)
echo(CLI_CONFIG, "", stderr=True)
if autobackup_config["auto_mount_enabled"]:
# Execute each mount_cmds command in sequence
for cmd in autobackup_config["mount_cmds"]:
echo(
CLI_CONFIG,
f"Executing mount command '{cmd.split()[0]}'... ",
newline=False,
)
tstart = datetime.now()
ret = run(
cmd.split(),
stdout=PIPE,
stderr=PIPE,
)
tend = datetime.now()
ttot = tend - tstart
if ret.returncode != 0:
echo(
CLI_CONFIG,
f"failed. [{ttot.seconds}s]",
)
echo(
CLI_CONFIG,
f"Exiting; command reports: {ret.stderr.decode().strip()}",
)
if email_report is not None:
send_execution_failure_report(error=ret.stderr.decode().strip())
exit(1)
else:
echo(CLI_CONFIG, f"done. [{ttot.seconds}s]")
# For each VM, perform the backup
for vm in backup_vms:
backup_suffixed_path = f"{autobackup_config['backup_root_path']}{autobackup_config['backup_root_suffix']}"
if not path.exists(backup_suffixed_path):
makedirs(backup_suffixed_path)
backup_path = f"{backup_suffixed_path}/{vm}"
autobackup_state_file = f"{backup_path}/.autobackup.json"
if not path.exists(backup_path) or not path.exists(autobackup_state_file):
# There are no new backups so the list is empty
state_data = dict()
tracked_backups = list()
else:
with open(autobackup_state_file) as fh:
state_data = jload(fh)
tracked_backups = state_data["tracked_backups"]
full_interval = autobackup_config["backup_schedule"]["full_interval"]
full_retention = autobackup_config["backup_schedule"]["full_retention"]
full_backups = [b for b in tracked_backups if b["type"] == "full"]
if len(full_backups) > 0:
last_full_backup = full_backups[0]
last_full_backup_idx = tracked_backups.index(last_full_backup)
if force_full_flag:
this_backup_type = "forced-full"
this_backup_incremental_parent = None
this_backup_retain_snapshot = True
elif last_full_backup_idx >= full_interval - 1:
this_backup_type = "full"
this_backup_incremental_parent = None
this_backup_retain_snapshot = True
else:
this_backup_type = "incremental"
this_backup_incremental_parent = last_full_backup["datestring"]
this_backup_retain_snapshot = False
else:
# The very first backup must be full to start the tree
this_backup_type = "full"
this_backup_incremental_parent = None
this_backup_retain_snapshot = True
# Perform the backup
echo(
CLI_CONFIG,
f"Backing up VM '{vm}' ({this_backup_type})... ",
newline=False,
)
tstart = datetime.now()
retcode, retdata = pvc.lib.vm.vm_backup(
CLI_CONFIG,
vm,
backup_suffixed_path,
incremental_parent=this_backup_incremental_parent,
retain_snapshot=this_backup_retain_snapshot,
)
tend = datetime.now()
ttot = tend - tstart
if not retcode:
backup_datestring = findall(r"[0-9]{14}", retdata)[0]
echo(CLI_CONFIG, f"failed. [{ttot.seconds}s]")
echo(
CLI_CONFIG,
retdata.strip().replace(f"ERROR in backup {backup_datestring}: ", ""),
)
skip_cleanup = True
else:
backup_datestring = findall(r"[0-9]{14}", retdata)[0]
echo(
CLI_CONFIG,
f"done. Backup '{backup_datestring}' created. [{ttot.seconds}s]",
)
skip_cleanup = False
# Read backup file to get details
backup_json_file = f"{backup_path}/{backup_datestring}/pvcbackup.json"
with open(backup_json_file) as fh:
backup_json = jload(fh)
tracked_backups.insert(0, backup_json)
# Delete any full backups that are expired
marked_for_deletion = list()
found_full_count = 0
for backup in tracked_backups:
if backup["type"] == "full":
found_full_count += 1
if found_full_count > full_retention:
marked_for_deletion.append(backup)
# Depete any incremental backups that depend on marked parents
for backup in tracked_backups:
if backup["type"] == "incremental" and backup["incremental_parent"] in [
b["datestring"] for b in marked_for_deletion
]:
marked_for_deletion.append(backup)
if len(marked_for_deletion) > 0:
if skip_cleanup:
echo(
CLI_CONFIG,
f"Skipping cleanups for {len(marked_for_deletion)} aged-out backups due to backup failure.",
)
else:
echo(
CLI_CONFIG,
f"Running cleanups for {len(marked_for_deletion)} aged-out backups...",
)
# Execute deletes
for backup_to_delete in marked_for_deletion:
echo(
CLI_CONFIG,
f"Removing old VM '{vm}' backup '{backup_to_delete['datestring']}' ({backup_to_delete['type']})... ",
newline=False,
)
tstart = datetime.now()
retcode, retdata = pvc.lib.vm.vm_remove_backup(
CLI_CONFIG,
vm,
backup_suffixed_path,
backup_to_delete["datestring"],
)
tend = datetime.now()
ttot = tend - tstart
if not retcode:
echo(CLI_CONFIG, f"failed. [{ttot.seconds}s]")
echo(
CLI_CONFIG,
f"Skipping removal from tracked backups; command reports: {retdata}",
)
else:
tracked_backups.remove(backup_to_delete)
echo(CLI_CONFIG, f"done. [{ttot.seconds}s]")
# Update tracked state information
state_data["tracked_backups"] = tracked_backups
with open(autobackup_state_file, "w") as fh:
jdump(state_data, fh)
backup_summary[vm] = tracked_backups
if autobackup_config["auto_mount_enabled"]:
# Execute each unmount_cmds command in sequence
for cmd in autobackup_config["unmount_cmds"]:
echo(
CLI_CONFIG,
f"Executing unmount command '{cmd.split()[0]}'... ",
newline=False,
)
tstart = datetime.now()
ret = run(
cmd.split(),
stdout=PIPE,
stderr=PIPE,
)
tend = datetime.now()
ttot = tend - tstart
if ret.returncode != 0:
echo(
CLI_CONFIG,
f"failed. [{ttot.seconds}s]",
)
echo(
CLI_CONFIG,
f"Continuing; command reports: {ret.stderr.decode().strip()}",
)
else:
echo(CLI_CONFIG, f"done. [{ttot.seconds}s]")
autobackup_end_time = datetime.now()
autobackup_total_time = autobackup_end_time - autobackup_start_time
# Handle report emailing
if email_report is not None:
echo(CLI_CONFIG, "")
echo(CLI_CONFIG, f"Sending email summary report to {email_report}")
current_datetime = datetime.now()
email_datetime = formatdate(float(current_datetime.strftime("%s")))
email = list()
email.append(f"Date: {email_datetime}")
email.append(f"Subject: PVC Autobackup report for cluster {cluster}")
recipients = list()
for recipient in email_report.split(","):
recipients.append(f"<{recipient}>")
email.append(f"To: {', '.join(recipients)}")
email.append(f"From: PVC Autobackup System <pvc@{gethostname()}>")
email.append("")
email.append(
f"A PVC autobackup has been completed at {current_datetime} in {autobackup_total_time}."
)
email.append("")
email.append(
"The following is a summary of all current VM backups after cleanups, most recent first:"
)
email.append("")
for vm in backup_vms:
email.append(f"VM {vm}:")
for backup in backup_summary[vm]:
datestring = backup.get("datestring")
backup_date = datetime.strptime(datestring, "%Y%m%d%H%M%S")
if backup.get("result", False):
email.append(
f" {backup_date}: Success in {backup.get('runtime_secs', 0)} seconds, ID {datestring}, type {backup.get('type', 'unknown')}"
)
email.append(
f" Backup contains {len(backup.get('backup_files'))} files totaling {pvc.lib.storage.format_bytes_tohuman(backup.get('backup_size_bytes', 0))} ({backup.get('backup_size_bytes', 0)} bytes)"
)
else:
email.append(
f" {backup_date}: Failure in {backup.get('runtime_secs', 0)} seconds, ID {datestring}, type {backup.get('type', 'unknown')}"
)
email.append(
f" {backup.get('result_message')}"
)
try:
p = popen("/usr/sbin/sendmail -t", "w")
p.write("\n".join(email))
p.close()
except Exception as e:
echo(CLI_CONFIG, f"Failed to send report email: {e}")
echo(CLI_CONFIG, "")
echo(CLI_CONFIG, f"Autobackup completed in {autobackup_total_time}.")

18
client-cli/pvc/lib/vm.py
View File

@ -595,6 +595,24 @@ def vm_import_snapshot(
return get_wait_retdata(response, wait_flag)
def vm_autobackup(config, email_recipients=None, force_full_flag=False, wait_flag=True):
"""
Perform a cluster VM autobackup
API endpoint: POST /vm//autobackup
API arguments: email_recipients=email_recipients, force_full_flag=force_full_flag
API schema: {"message":"{data}"}
"""
params = {
"email_recipients": email_recipients,
"force_full": force_full_flag,
}
response = call_api(config, "post", "/vm/autobackup", params=params)
return get_wait_retdata(response, wait_flag)
def vm_vcpus_set(config, vm, vcpus, topology, restart):
"""
Set the vCPU count of the VM with topology

479
daemon-common/autobackup.py Normal file
View File

@ -0,0 +1,479 @@
#!/usr/bin/env python3
# autobackup.py - PVC API Autobackup functions
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018-2024 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/>.
#
###############################################################################
from datetime import datetime
from json import load as jload
from json import dump as jdump
from os import popen, makedirs, path
from shutil import rmtree
from subprocess import run, PIPE
from daemon_lib.config import get_autobackup_configuration
from daemon_lib.celery import start, fail, log_info, log_err, update, finish
import daemon_lib.ceph as pvc_ceph
import daemon_lib.vm as pvc_vm
def send_execution_failure_report(
celery_conf, config, recipients=None, total_time=0, error=None
):
if recipients is None:
return
from email.utils import formatdate
from socket import gethostname
log_message = f"Sending email failure report to {', '.join(recipients)}"
log_info(log_message)
update(
celery_conf[0],
log_message,
current=celery_conf[1] + 1,
total=celery_conf[2],
)
current_datetime = datetime.now()
email_datetime = formatdate(float(current_datetime.strftime("%s")))
email = list()
email.append(f"Date: {email_datetime}")
email.append(
f"Subject: PVC Autobackup execution failure for cluster '{config['cluster']}'"
)
email_to = list()
for recipient in recipients:
email_to.append(f"<{recipient}>")
email.append(f"To: {', '.join(email_to)}")
email.append(f"From: PVC Autobackup System <pvc@{gethostname()}>")
email.append("")
email.append(
f"A PVC autobackup has FAILED at {current_datetime} in {total_time}s due to an execution error."
)
email.append("")
email.append("The reported error message is:")
email.append(f" {error}")
try:
with popen("/usr/sbin/sendmail -t", "w") as p:
p.write("\n".join(email))
except Exception as e:
log_err(f"Failed to send report email: {e}")
def send_execution_summary_report(
celery_conf, config, recipients=None, total_time=0, summary=dict()
):
if recipients is None:
return
from email.utils import formatdate
from socket import gethostname
log_message = f"Sending email summary report to {', '.join(recipients)}"
log_info(log_message)
update(
celery_conf[0],
log_message,
current=celery_conf[1] + 1,
total=celery_conf[2],
)
current_datetime = datetime.now()
email_datetime = formatdate(float(current_datetime.strftime("%s")))
email = list()
email.append(f"Date: {email_datetime}")
email.append(f"Subject: PVC Autobackup report for cluster '{config['cluster']}'")
email_to = list()
for recipient in recipients:
email_to.append(f"<{recipient}>")
email.append(f"To: {', '.join(email_to)}")
email.append(f"From: PVC Autobackup System <pvc@{gethostname()}>")
email.append("")
email.append(
f"A PVC autobackup has been completed at {current_datetime} in {total_time}s."
)
email.append("")
email.append(
"The following is a summary of all current VM backups after cleanups, most recent first:"
)
email.append("")
for vm in summary.keys():
email.append(f"VM: {vm}:")
for backup in summary[vm]:
datestring = backup.get("datestring")
backup_date = datetime.strptime(datestring, "%Y%m%d%H%M%S")
if backup.get("result", False):
email.append(
f" {backup_date}: Success in {backup.get('runtime_secs', 0)} seconds, ID {datestring}, type {backup.get('type', 'unknown')}"
)
email.append(
f" Backup contains {len(backup.get('backup_files'))} files totaling {pvc_ceph.format_bytes_tohuman(backup.get('backup_size_bytes', 0))} ({backup.get('backup_size_bytes', 0)} bytes)"
)
else:
email.append(
f" {backup_date}: Failure in {backup.get('runtime_secs', 0)} seconds, ID {datestring}, type {backup.get('type', 'unknown')}"
)
email.append(f" {backup.get('result_message')}")
try:
with popen("/usr/sbin/sendmail -t", "w") as p:
p.write("\n".join(email))
except Exception as e:
log_err(f"Failed to send report email: {e}")
def worker_cluster_autobackup(
zkhandler, celery, force_full=False, email_recipients=None
):
config = get_autobackup_configuration()
backup_summary = dict()
current_stage = 0
total_stages = 1
if email_recipients is not None:
total_stages += 1
start(
celery,
f"Starting cluster '{config['cluster']}' VM autobackup",
current=current_stage,
total=total_stages,
)
if not config["autobackup_enabled"]:
message = "Autobackups are not configured on this cluster."
log_info(celery, message)
return finish(
celery,
message,
current=total_stages,
total=total_stages,
)
autobackup_start_time = datetime.now()
retcode, vm_list = pvc_vm.get_list(zkhandler)
if not retcode:
error_message = f"Failed to fetch VM list: {vm_list}"
log_err(celery, error_message)
send_execution_failure_report(
(celery, current_stage, total_stages),
config,
recipients=email_recipients,
error=error_message,
)
fail(celery, error_message)
return False
backup_vms = list()
for vm in vm_list:
vm_tag_names = [t["name"] for t in vm["tags"]]
matching_tags = (
True
if len(set(vm_tag_names).intersection(set(config["backup_tags"]))) > 0
else False
)
if matching_tags:
backup_vms.append(vm)
if len(backup_vms) < 1:
message = "Found no VMs tagged for autobackup."
log_info(celery, message)
return finish(
celery,
message,
current=total_stages,
total=total_stages,
)
if config["auto_mount_enabled"]:
total_stages += len(config["mount_cmds"])
total_stages += len(config["unmount_cmds"])
for vm in backup_vms:
total_disks = len([d for d in vm["disks"] if d["type"] == "rbd"])
total_stages += 2 + 1 + 2 + 2 + 3 * total_disks
log_info(
celery,
f"Found {len(backup_vms)} suitable VM(s) for autobackup: {', '.join(vm_list)}",
)
# Handle automount mount commands
if config["auto_mount_enabled"]:
for cmd in config["mount_cmds"]:
current_stage += 1
update(
celery,
f"Executing mount command '{cmd.split()[0]}'",
current=current_stage,
total=total_stages,
)
ret = run(
cmd.split(),
stdout=PIPE,
stderr=PIPE,
)
if ret.returncode != 0:
error_message = f"Failed to execute mount command '{cmd.split()[0]}': {ret.stderr.decode().strip()}"
log_err(celery, error_message)
send_execution_failure_report(
(celery, current_stage, total_stages),
config,
recipients=email_recipients,
total_time=datetime.now() - autobackup_start_time,
error=error_message,
)
fail(celery, error_message)
return False
# Execute the backup: take a snapshot, then export the snapshot
backup_suffixed_path = (
f"{config['backup_root_path']}/{config['backup_root_suffix']}"
)
if not path.exists(backup_suffixed_path):
makedirs(backup_suffixed_path)
full_interval = config["backup_schedule"]["full_interval"]
full_retention = config["backup_schedule"]["full_retention"]
for vm in backup_vms:
vm_name = vm["name"]
vm_backup_path = f"{backup_suffixed_path}/{vm_name}"
autobackup_state_file = f"{vm_backup_path}/.autobackup.json"
if not path.exists(vm_backup_path) or not path.exists(autobackup_state_file):
# There are no existing backups so the list is empty
state_data = dict()
tracked_backups = list()
else:
with open(autobackup_state_file) as fh:
state_data = jload(fh)
tracked_backups = state_data["tracked_backups"]
full_backups = [b for b in tracked_backups if b["type"] == "full"]
if len(full_backups) > 0:
last_full_backup = full_backups[0]
last_full_backup_idx = tracked_backups.index(last_full_backup)
if force_full:
this_backup_incremental_parent = None
this_backup_retain_snapshot = True
elif last_full_backup_idx >= full_interval - 1:
this_backup_incremental_parent = None
this_backup_retain_snapshot = True
else:
this_backup_incremental_parent = last_full_backup["datestring"]
this_backup_retain_snapshot = False
else:
# The very first ackup must be full to start the tree
this_backup_incremental_parent = None
this_backup_retain_snapshot = True
now = datetime.now()
datestring = now.strftime("%Y%m%d%H%M%S")
snapshot_name = f"autobackup_{datestring}"
# Take the snapshot
ret = pvc_vm.vm_worker_create_snapshot(
zkhandler,
celery,
vm_name,
snapshot_name=snapshot_name,
override_current_stage=current_stage,
override_total_stages=total_stages,
)
if ret is False:
error_message = f"Failed to create backup snapshot '{snapshot_name}'"
log_err(celery, error_message)
send_execution_failure_report(
(celery, current_stage, total_stages),
config,
recipients=email_recipients,
error=error_message,
)
return False
# Export the snapshot
ret = pvc_vm.vm_worker_export_snapshot(
zkhandler,
celery,
vm_name,
snapshot_name,
backup_suffixed_path,
incremental_parent=this_backup_incremental_parent,
override_current_stage=current_stage,
override_total_stages=total_stages,
)
if ret is False:
error_message = f"Failed to export backup snapshot '{snapshot_name}'"
log_err(celery, error_message)
send_execution_failure_report(
(celery, current_stage, total_stages),
config,
recipients=email_recipients,
error=error_message,
)
return False
# Clean up the snapshot
if not this_backup_retain_snapshot:
ret = pvc_vm.vm_worker_remove_snapshot(
zkhandler,
celery,
vm_name,
snapshot_name,
override_current_stage=current_stage,
override_total_stages=total_stages,
)
if ret is False:
error_message = f"Failed to remove backup snapshot '{snapshot_name}'"
log_err(celery, error_message)
send_execution_failure_report(
(celery, current_stage, total_stages),
config,
recipients=email_recipients,
error=error_message,
)
return False
else:
total_disks = len([d for d in vm["disks"] if d["type"] == "rbd"])
current_stage += 2 + total_disks
current_stage += 1
update(
celery,
f"Finding obsolete incremental backups for '{vm_name}'",
current=current_stage,
total=total_stages,
)
# Read export file to get details
backup_json_file = f"{vm_backup_path}/{snapshot_name}/snapshot.json"
with open(backup_json_file) as fh:
backup_json = jload(fh)
tracked_backups.insert(0, backup_json)
marked_for_deletion = list()
# Find any full backups that are expired
found_full_count = 0
for backup in tracked_backups:
if backup["type"] == "full":
found_full_count += 1
if found_full_count > full_retention:
marked_for_deletion.append(backup)
# Find any incremental backups that depend on marked parents
for backup in tracked_backups:
if backup["type"] == "incremental" and backup["incremental_parent"] in [
b["datestring"] for b in marked_for_deletion
]:
marked_for_deletion.append(backup)
current_stage += 1
if len(marked_for_deletion) > 0:
update(
celery,
f"Cleaning up aged out backups for '{vm_name}'",
current=current_stage,
total=total_stages,
)
for backup_to_delete in marked_for_deletion:
ret = pvc_vm.vm_worker_remove_snapshot(
zkhandler, None, vm_name, backup_to_delete["snapshot_name"]
)
if ret is False:
error_message = f"Failed to remove obsolete backup snapshot '{backup_to_delete['snapshot_name']}', leaving in tracked backups"
log_err(celery, error_message)
else:
rmtree(f"{vm_backup_path}/{backup_to_delete['snapshot_name']}")
tracked_backups.remove(backup_to_delete)
current_stage += 1
update(
celery,
"Updating tracked backups",
current=current_stage,
total=total_stages,
)
state_data["tracked_backups"] = tracked_backups
with open(autobackup_state_file, "w") as fh:
jdump(state_data, fh)
backup_summary[vm] = tracked_backups
# Handle automount unmount commands
if config["auto_mount_enabled"]:
for cmd in config["unmount_cmds"]:
current_stage += 1
update(
celery,
f"Executing unmount command '{cmd.split()[0]}'",
current=current_stage,
total=total_stages,
)
ret = run(
cmd.split(),
stdout=PIPE,
stderr=PIPE,
)
if ret.returncode != 0:
error_message = f"Failed to execute unmount command '{cmd.split()[0]}': {ret.stderr.decode().strip()}"
log_err(celery, error_message)
send_execution_failure_report(
(celery, current_stage, total_stages),
config,
recipients=email_recipients,
total_time=datetime.now() - autobackup_start_time,
error=error_message,
)
fail(celery, error_message)
return False
autobackup_end_time = datetime.now()
autobackup_total_time = autobackup_end_time - autobackup_start_time
send_execution_summary_report(
(celery, current_stage, total_stages),
config,
recipients=email_recipients,
total_time=autobackup_total_time,
summary=backup_summary,
)
current_stage += 1
return finish(
celery,
f"Successfully completed cluster '{config['cluster']}' VM autobackup",
current=current_stage,
total=total_stages,
)

72
daemon-common/config.py
View File

@ -406,6 +406,78 @@ def get_configuration():
return config
def get_parsed_autobackup_configuration(config_file):
"""
Load the configuration; this is the same main pvc.conf that the daemons read
"""
print('Loading configuration from file "{}"'.format(config_file))
with open(config_file, "r") as cfgfh:
try:
o_config = yaml.load(cfgfh, Loader=yaml.SafeLoader)
except Exception as e:
print(f"ERROR: Failed to parse configuration file: {e}")
os._exit(1)
config = dict()
try:
o_cluster = o_config["cluster"]
config_cluster = {
"cluster": o_cluster["name"],
"autobackup_enabled": True,
}
config = {**config, **config_cluster}
o_autobackup = o_config["autobackup"]
if o_autobackup is None:
config["autobackup_enabled"] = False
return config
config_autobackup = {
"backup_root_path": o_autobackup["backup_root_path"],
"backup_root_suffix": o_autobackup["backup_root_suffix"],
"backup_tags": o_autobackup["backup_tags"],
"backup_schedule": o_autobackup["backup_schedule"],
}
config = {**config, **config_autobackup}
o_automount = o_autobackup["auto_mount"]
config_automount = {
"auto_mount_enabled": o_automount["enabled"],
}
config = {**config, **config_automount}
if config["auto_mount_enabled"]:
config["mount_cmds"] = list()
for _mount_cmd in o_automount["mount_cmds"]:
if "{backup_root_path}" in _mount_cmd:
_mount_cmd = _mount_cmd.format(
backup_root_path=config["backup_root_path"]
)
config["mount_cmds"].append(_mount_cmd)
config["unmount_cmds"] = list()
for _unmount_cmd in o_automount["unmount_cmds"]:
if "{backup_root_path}" in _unmount_cmd:
_unmount_cmd = _unmount_cmd.format(
backup_root_path=config["backup_root_path"]
)
config["unmount_cmds"].append(_unmount_cmd)
except Exception as e:
raise MalformedConfigurationError(e)
return config
def get_autobackup_configuration():
"""
Get the configuration.
"""
pvc_config_file = get_configuration_path()
config = get_parsed_autobackup_configuration(pvc_config_file)
return config
def validate_directories(config):
if not os.path.exists(config["dynamic_directory"]):
os.makedirs(config["dynamic_directory"])

18
worker-daemon/pvcworkerd/Daemon.py
View File

@ -47,6 +47,9 @@ from daemon_lib.benchmark import (
from daemon_lib.vmbuilder import (
worker_create_vm,
)
from daemon_lib.autobackup import (
worker_cluster_autobackup,
)
# Daemon version
version = "0.9.98"
@ -101,6 +104,21 @@ def storage_benchmark(self, pool=None, run_on="primary"):
return run_storage_benchmark(self, pool)
@celery.task(name="cluster.autobackup", bind=True, routing_key="run_on")
def cluster_autobackup(self, force_full=False, email_recipients=None, run_on="primary"):
@ZKConnection(config)
def run_cluster_autobackup(
zkhandler, self, force_full=False, email_recipients=None
):
return worker_cluster_autobackup(
zkhandler, self, force_full=force_full, email_recipients=email_recipients
)
return run_cluster_autobackup(
self, force_full=force_full, email_recipients=email_recipients
)
@celery.task(name="vm.flush_locks", bind=True, routing_key="run_on")
def vm_flush_locks(self, domain=None, force_unlock=False, run_on="primary"):
@ZKConnection(config)