977 lines
39 KiB
Python
977 lines
39 KiB
Python
#!/usr/bin/env python3
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# vm.py - PVC client function library, VM fuctions
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# Part of the Parallel Virtual Cluster (PVC) system
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#
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# Copyright (C) 2018-2020 Joshua M. Boniface <joshua@boniface.me>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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###############################################################################
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import time
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import re
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import click
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import lxml.objectify
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import daemon_lib.ansiprint as ansiprint
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import daemon_lib.zkhandler as zkhandler
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import daemon_lib.common as common
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import daemon_lib.ceph as ceph
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#
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# Cluster search functions
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#
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def getClusterDomainList(zk_conn):
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# Get a list of UUIDs by listing the children of /domains
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uuid_list = zkhandler.listchildren(zk_conn, '/domains')
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name_list = []
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# For each UUID, get the corresponding name from the data
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for uuid in uuid_list:
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name_list.append(zkhandler.readdata(zk_conn, '/domains/%s' % uuid))
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return uuid_list, name_list
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def searchClusterByUUID(zk_conn, uuid):
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try:
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# Get the lists
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uuid_list, name_list = getClusterDomainList(zk_conn)
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# We're looking for UUID, so find that element ID
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index = uuid_list.index(uuid)
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# Get the name_list element at that index
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name = name_list[index]
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except ValueError:
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# We didn't find anything
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return None
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return name
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def searchClusterByName(zk_conn, name):
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try:
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# Get the lists
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uuid_list, name_list = getClusterDomainList(zk_conn)
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# We're looking for name, so find that element ID
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index = name_list.index(name)
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# Get the uuid_list element at that index
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uuid = uuid_list[index]
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except ValueError:
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# We didn't find anything
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return None
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return uuid
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def getDomainUUID(zk_conn, domain):
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# Validate that VM exists in cluster
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if common.validateUUID(domain):
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dom_name = searchClusterByUUID(zk_conn, domain)
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dom_uuid = searchClusterByName(zk_conn, dom_name)
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else:
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dom_uuid = searchClusterByName(zk_conn, domain)
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dom_name = searchClusterByUUID(zk_conn, dom_uuid)
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return dom_uuid
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def getDomainName(zk_conn, domain):
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# Validate that VM exists in cluster
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if common.validateUUID(domain):
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dom_name = searchClusterByUUID(zk_conn, domain)
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dom_uuid = searchClusterByName(zk_conn, dom_name)
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else:
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dom_uuid = searchClusterByName(zk_conn, domain)
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dom_name = searchClusterByUUID(zk_conn, dom_uuid)
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return dom_name
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#
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# Direct functions
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#
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def is_migrated(zk_conn, domain):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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last_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
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if last_node:
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return True
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else:
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return False
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def flush_locks(zk_conn, domain):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Verify that the VM is in a stopped state; freeing locks is not safe otherwise
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state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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if state != 'stop':
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return False, 'ERROR: VM "{}" is not in stopped state; flushing RBD locks on a running VM is dangerous.'.format(domain)
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# Tell the cluster to create a new OSD for the host
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flush_locks_string = 'flush_locks {}'.format(dom_uuid)
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zkhandler.writedata(zk_conn, {'/cmd/domains': flush_locks_string})
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# Wait 1/2 second for the cluster to get the message and start working
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time.sleep(0.5)
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# Acquire a read lock, so we get the return exclusively
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lock = zkhandler.readlock(zk_conn, '/cmd/domains')
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with lock:
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try:
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result = zkhandler.readdata(zk_conn, '/cmd/domains').split()[0]
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if result == 'success-flush_locks':
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message = 'Flushed locks on VM "{}"'.format(domain)
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success = True
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else:
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message = 'ERROR: Failed to flush locks on VM "{}"; check node logs for details.'.format(domain)
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success = False
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except Exception:
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message = 'ERROR: Command ignored by node.'
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success = False
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# Acquire a write lock to ensure things go smoothly
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lock = zkhandler.writelock(zk_conn, '/cmd/domains')
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with lock:
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time.sleep(0.5)
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zkhandler.writedata(zk_conn, {'/cmd/domains': ''})
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return success, message
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def define_vm(zk_conn, config_data, target_node, node_limit, node_selector, node_autostart, migration_method=None, profile=None, initial_state='stop'):
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# Parse the XML data
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try:
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parsed_xml = lxml.objectify.fromstring(config_data)
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except Exception:
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return False, 'ERROR: Failed to parse XML data.'
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dom_uuid = parsed_xml.uuid.text
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dom_name = parsed_xml.name.text
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# Ensure that the UUID and name are unique
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if searchClusterByUUID(zk_conn, dom_uuid) or searchClusterByName(zk_conn, dom_name):
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return False, 'ERROR: Specified VM "{}" or UUID "{}" matches an existing VM on the cluster'.format(dom_name, dom_uuid)
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if not target_node:
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target_node = common.findTargetNode(zk_conn, dom_uuid)
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else:
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# Verify node is valid
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valid_node = common.verifyNode(zk_conn, target_node)
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if not valid_node:
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return False, 'ERROR: Specified node "{}" is invalid.'.format(target_node)
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# Obtain the RBD disk list using the common functions
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ddisks = common.getDomainDisks(parsed_xml, {})
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rbd_list = []
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for disk in ddisks:
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if disk['type'] == 'rbd':
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rbd_list.append(disk['name'])
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# Join the limit
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if isinstance(node_limit, list) and node_limit:
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formatted_node_limit = ','.join(node_limit)
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else:
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formatted_node_limit = ''
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# Join the RBD list
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if isinstance(rbd_list, list) and rbd_list:
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formatted_rbd_list = ','.join(rbd_list)
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else:
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formatted_rbd_list = ''
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# Add the new domain to Zookeeper
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zkhandler.writedata(zk_conn, {
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'/domains/{}'.format(dom_uuid): dom_name,
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'/domains/{}/state'.format(dom_uuid): initial_state,
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'/domains/{}/node'.format(dom_uuid): target_node,
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'/domains/{}/lastnode'.format(dom_uuid): '',
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'/domains/{}/node_limit'.format(dom_uuid): formatted_node_limit,
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'/domains/{}/node_selector'.format(dom_uuid): node_selector,
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'/domains/{}/node_autostart'.format(dom_uuid): node_autostart,
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'/domains/{}/migration_method'.format(dom_uuid): migration_method,
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'/domains/{}/failedreason'.format(dom_uuid): '',
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'/domains/{}/consolelog'.format(dom_uuid): '',
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'/domains/{}/rbdlist'.format(dom_uuid): formatted_rbd_list,
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'/domains/{}/profile'.format(dom_uuid): profile,
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'/domains/{}/xml'.format(dom_uuid): config_data
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})
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return True, 'Added new VM with Name "{}" and UUID "{}" to database.'.format(dom_name, dom_uuid)
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def modify_vm_metadata(zk_conn, domain, node_limit, node_selector, node_autostart, provisioner_profile, migration_method):
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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if node_limit is not None:
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zkhandler.writedata(zk_conn, {
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'/domains/{}/node_limit'.format(dom_uuid): node_limit
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})
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if node_selector is not None:
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zkhandler.writedata(zk_conn, {
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'/domains/{}/node_selector'.format(dom_uuid): node_selector
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})
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if node_autostart is not None:
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zkhandler.writedata(zk_conn, {
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'/domains/{}/node_autostart'.format(dom_uuid): node_autostart
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})
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if provisioner_profile is not None:
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zkhandler.writedata(zk_conn, {
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'/domains/{}/profile'.format(dom_uuid): provisioner_profile
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})
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if migration_method is not None:
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zkhandler.writedata(zk_conn, {
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'/domains/{}/migration_method'.format(dom_uuid): migration_method
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})
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return True, 'Successfully modified PVC metadata of VM "{}".'.format(domain)
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def modify_vm(zk_conn, domain, restart, new_vm_config):
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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dom_name = getDomainName(zk_conn, domain)
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# Parse and valiate the XML
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try:
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parsed_xml = lxml.objectify.fromstring(new_vm_config)
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except Exception:
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return False, 'ERROR: Failed to parse XML data.'
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# Obtain the RBD disk list using the common functions
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ddisks = common.getDomainDisks(parsed_xml, {})
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rbd_list = []
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for disk in ddisks:
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if disk['type'] == 'rbd':
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rbd_list.append(disk['name'])
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# Join the RBD list
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if isinstance(rbd_list, list) and rbd_list:
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formatted_rbd_list = ','.join(rbd_list)
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else:
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formatted_rbd_list = ''
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# Add the modified config to Zookeeper
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zk_data = {
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'/domains/{}'.format(dom_uuid): dom_name,
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'/domains/{}/rbdlist'.format(dom_uuid): formatted_rbd_list,
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'/domains/{}/xml'.format(dom_uuid): new_vm_config
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}
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zkhandler.writedata(zk_conn, zk_data)
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if restart:
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' })
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lock.release()
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return True, ''
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def dump_vm(zk_conn, domain):
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Gram the domain XML and dump it to stdout
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vm_xml = zkhandler.readdata(zk_conn, '/domains/{}/xml'.format(dom_uuid))
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return True, vm_xml
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def undefine_vm(zk_conn, domain):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Shut down the VM
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current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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if current_vm_state != 'stop':
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# Set the domain into stop mode
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
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lock.release()
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# Wait for 2 seconds to allow state to flow to all nodes
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time.sleep(2)
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# Gracefully terminate the class instances
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zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'delete'})
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time.sleep(2)
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# Delete the configurations
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zkhandler.deletekey(zk_conn, '/domains/{}'.format(dom_uuid))
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return True, 'Undefined VM "{}" from the cluster.'.format(domain)
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def remove_vm(zk_conn, domain):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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disk_list = common.getDomainDiskList(zk_conn, dom_uuid)
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# Shut down the VM
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current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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if current_vm_state != 'stop':
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# Set the domain into stop mode
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
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lock.release()
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# Wait for 2 seconds to allow state to flow to all nodes
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time.sleep(2)
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# Gracefully terminate the class instances
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zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'delete'})
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time.sleep(2)
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# Delete the configurations
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zkhandler.deletekey(zk_conn, '/domains/{}'.format(dom_uuid))
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time.sleep(2)
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# Remove disks
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for disk in disk_list:
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# vmpool/vmname_volume
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try:
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disk_pool, disk_name = disk.split('/')
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retcode, message = ceph.remove_volume(zk_conn, disk_pool, disk_name)
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except ValueError:
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continue
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return True, 'Removed VM "{}" and disks from the cluster.'.format(domain)
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def start_vm(zk_conn, domain):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Set the VM to start
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'start' })
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lock.release()
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return True, 'Starting VM "{}".'.format(domain)
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def restart_vm(zk_conn, domain, wait=False):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Get state and verify we're OK to proceed
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current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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if current_state != 'start':
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return False, 'ERROR: VM "{}" is not in "start" state!'.format(domain)
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retmsg = 'Restarting VM "{}".'.format(domain)
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# Set the VM to restart
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' })
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lock.release()
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if wait:
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while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == 'restart':
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time.sleep(1)
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retmsg = 'Restarted VM "{}"'.format(domain)
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return True, retmsg
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def shutdown_vm(zk_conn, domain, wait=False):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Get state and verify we're OK to proceed
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current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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if current_state != 'start':
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return False, 'ERROR: VM "{}" is not in "start" state!'.format(domain)
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retmsg = 'Shutting down VM "{}"'.format(domain)
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# Set the VM to shutdown
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'shutdown' })
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lock.release()
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if wait:
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while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == 'shutdown':
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time.sleep(1)
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retmsg = 'Shut down VM "{}"'.format(domain)
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return True, retmsg
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def stop_vm(zk_conn, domain):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Set the VM to start
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
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lock.release()
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return True, 'Forcibly stopping VM "{}".'.format(domain)
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def disable_vm(zk_conn, domain):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Get state and verify we're OK to proceed
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current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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if current_state != 'stop':
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return False, 'ERROR: VM "{}" must be stopped before disabling!'.format(domain)
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# Set the VM to start
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lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
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lock.acquire()
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zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'disable' })
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lock.release()
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return True, 'Marked VM "{}" as disable.'.format(domain)
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def move_vm(zk_conn, domain, target_node, wait=False, force_live=False):
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# Validate that VM exists in cluster
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dom_uuid = getDomainUUID(zk_conn, domain)
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if not dom_uuid:
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return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
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# Get state and verify we're OK to proceed
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current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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if current_state != 'start':
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# If the current state isn't start, preserve it; we're not doing live migration
|
|
target_state = current_state
|
|
else:
|
|
if force_live:
|
|
target_state = 'migrate-live'
|
|
else:
|
|
target_state = 'migrate'
|
|
|
|
current_node = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(dom_uuid))
|
|
|
|
if not target_node:
|
|
target_node = common.findTargetNode(zk_conn, dom_uuid)
|
|
else:
|
|
# Verify node is valid
|
|
valid_node = common.verifyNode(zk_conn, target_node)
|
|
if not valid_node:
|
|
return False, 'ERROR: Specified node "{}" is invalid.'.format(target_node)
|
|
|
|
# Check if node is within the limit
|
|
node_limit = zkhandler.readdata(zk_conn, '/domains/{}/node_limit'.format(dom_uuid))
|
|
if node_limit and target_node not in node_limit.split(','):
|
|
return False, 'ERROR: Specified node "{}" is not in the allowed list of nodes for VM "{}".'.format(target_node, domain)
|
|
|
|
# Verify if node is current node
|
|
if target_node == current_node:
|
|
last_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
|
|
if last_node:
|
|
zkhandler.writedata(zk_conn, {'/domains/{}/lastnode'.format(dom_uuid): ''})
|
|
return True, 'Making temporary migration permanent for VM "{}".'.format(domain)
|
|
|
|
return False, 'ERROR: VM "{}" is already running on node "{}".'.format(domain, current_node)
|
|
|
|
if not target_node:
|
|
return False, 'ERROR: Could not find a valid migration target for VM "{}".'.format(domain)
|
|
|
|
retmsg = 'Permanently migrating VM "{}" to node "{}".'.format(domain, target_node)
|
|
|
|
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
|
lock.acquire()
|
|
zkhandler.writedata(zk_conn, {
|
|
'/domains/{}/state'.format(dom_uuid): target_state,
|
|
'/domains/{}/node'.format(dom_uuid): target_node,
|
|
'/domains/{}/lastnode'.format(dom_uuid): ''
|
|
})
|
|
lock.release()
|
|
|
|
if wait:
|
|
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
|
|
time.sleep(1)
|
|
retmsg = 'Permanently migrated VM "{}" to node "{}"'.format(domain, target_node)
|
|
|
|
return True, retmsg
|
|
|
|
def migrate_vm(zk_conn, domain, target_node, force_migrate, wait=False, force_live=False):
|
|
# Validate that VM exists in cluster
|
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
|
if not dom_uuid:
|
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
|
|
|
# Get state and verify we're OK to proceed
|
|
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
|
if current_state != 'start':
|
|
# If the current state isn't start, preserve it; we're not doing live migration
|
|
target_state = current_state
|
|
else:
|
|
if force_live:
|
|
target_state = 'migrate-live'
|
|
else:
|
|
target_state = 'migrate'
|
|
|
|
current_node = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(dom_uuid))
|
|
last_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
|
|
|
|
if last_node and not force_migrate:
|
|
return False, 'ERROR: VM "{}" has been previously migrated.'.format(domain)
|
|
|
|
if not target_node:
|
|
target_node = common.findTargetNode(zk_conn, dom_uuid)
|
|
else:
|
|
# Verify node is valid
|
|
valid_node = common.verifyNode(zk_conn, target_node)
|
|
if not valid_node:
|
|
return False, 'ERROR: Specified node "{}" is invalid.'.format(target_node)
|
|
|
|
# Check if node is within the limit
|
|
node_limit = zkhandler.readdata(zk_conn, '/domains/{}/node_limit'.format(dom_uuid))
|
|
if node_limit and target_node not in node_limit.split(','):
|
|
return False, 'ERROR: Specified node "{}" is not in the allowed list of nodes for VM "{}".'.format(target_node, domain)
|
|
|
|
# Verify if node is current node
|
|
if target_node == current_node:
|
|
return False, 'ERROR: VM "{}" is already running on node "{}".'.format(domain, current_node)
|
|
|
|
if not target_node:
|
|
return False, 'ERROR: Could not find a valid migration target for VM "{}".'.format(domain)
|
|
|
|
# Don't overwrite an existing last_node when using force_migrate
|
|
if last_node and force_migrate:
|
|
current_node = last_node
|
|
|
|
retmsg = 'Migrating VM "{}" to node "{}".'.format(domain, target_node)
|
|
|
|
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
|
lock.acquire()
|
|
zkhandler.writedata(zk_conn, {
|
|
'/domains/{}/state'.format(dom_uuid): target_state,
|
|
'/domains/{}/node'.format(dom_uuid): target_node,
|
|
'/domains/{}/lastnode'.format(dom_uuid): current_node
|
|
})
|
|
lock.release()
|
|
|
|
if wait:
|
|
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
|
|
time.sleep(1)
|
|
retmsg = 'Migrated VM "{}" to node "{}"'.format(domain, target_node)
|
|
|
|
return True, retmsg
|
|
|
|
def unmigrate_vm(zk_conn, domain, wait=False, force_live=False):
|
|
# Validate that VM exists in cluster
|
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
|
if not dom_uuid:
|
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
|
|
|
# Get state and verify we're OK to proceed
|
|
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
|
if current_state != 'start':
|
|
# If the current state isn't start, preserve it; we're not doing live migration
|
|
target_state = current_state
|
|
else:
|
|
if force_live:
|
|
target_state = 'migrate-live'
|
|
else:
|
|
target_state = 'migrate'
|
|
|
|
target_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
|
|
|
|
if target_node == '':
|
|
return False, 'ERROR: VM "{}" has not been previously migrated.'.format(domain)
|
|
|
|
retmsg = 'Unmigrating VM "{}" back to node "{}".'.format(domain, target_node)
|
|
|
|
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
|
lock.acquire()
|
|
zkhandler.writedata(zk_conn, {
|
|
'/domains/{}/state'.format(dom_uuid): target_state,
|
|
'/domains/{}/node'.format(dom_uuid): target_node,
|
|
'/domains/{}/lastnode'.format(dom_uuid): ''
|
|
})
|
|
lock.release()
|
|
|
|
if wait:
|
|
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
|
|
time.sleep(1)
|
|
retmsg = 'Unmigrated VM "{}" back to node "{}"'.format(domain, target_node)
|
|
|
|
return True, retmsg
|
|
|
|
def get_console_log(zk_conn, domain, lines=1000):
|
|
# Validate that VM exists in cluster
|
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
|
if not dom_uuid:
|
|
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
|
|
|
# Get the data from ZK
|
|
console_log = zkhandler.readdata(zk_conn, '/domains/{}/consolelog'.format(dom_uuid))
|
|
|
|
# Shrink the log buffer to length lines
|
|
shrunk_log = console_log.split('\n')[-lines:]
|
|
loglines = '\n'.join(shrunk_log)
|
|
|
|
return True, loglines
|
|
|
|
def get_info(zk_conn, domain):
|
|
# Validate that VM exists in cluster
|
|
dom_uuid = getDomainUUID(zk_conn, domain)
|
|
if not dom_uuid:
|
|
return False, 'ERROR: No VM named "{}" is present in the cluster.'.format(domain)
|
|
|
|
# Gather information from XML config and print it
|
|
domain_information = common.getInformationFromXML(zk_conn, dom_uuid)
|
|
if not domain_information:
|
|
return False, 'ERROR: Could not get information about VM "{}".'.format(domain)
|
|
|
|
return True, domain_information
|
|
|
|
def get_list(zk_conn, node, state, limit, is_fuzzy=True):
|
|
if node:
|
|
# Verify node is valid
|
|
if not common.verifyNode(zk_conn, node):
|
|
return False, 'Specified node "{}" is invalid.'.format(node)
|
|
|
|
if state:
|
|
valid_states = [ 'start', 'restart', 'shutdown', 'stop', 'disable', 'fail', 'migrate', 'unmigrate', 'provision' ]
|
|
if state not in valid_states:
|
|
return False, 'VM state "{}" is not valid.'.format(state)
|
|
|
|
full_vm_list = zkhandler.listchildren(zk_conn, '/domains')
|
|
vm_list = []
|
|
|
|
# Set our limit to a sensible regex
|
|
if limit and is_fuzzy:
|
|
try:
|
|
# Implcitly assume fuzzy limits
|
|
if not re.match('[^].*', limit):
|
|
limit = '.*' + limit
|
|
if not re.match('.*[$]', limit):
|
|
limit = limit + '.*'
|
|
except Exception as e:
|
|
return False, 'Regex Error: {}'.format(e)
|
|
|
|
# If we're limited, remove other nodes' VMs
|
|
vm_node = {}
|
|
vm_state = {}
|
|
for vm in full_vm_list:
|
|
# Check we don't match the limit
|
|
name = zkhandler.readdata(zk_conn, '/domains/{}'.format(vm))
|
|
vm_node[vm] = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(vm))
|
|
vm_state[vm] = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(vm))
|
|
# Handle limiting
|
|
if limit:
|
|
try:
|
|
if re.match(limit, vm):
|
|
if not node and not state:
|
|
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
|
else:
|
|
if vm_node[vm] == node or vm_state[vm] == state:
|
|
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
|
|
|
if re.match(limit, name):
|
|
if not node and not state:
|
|
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
|
else:
|
|
if vm_node[vm] == node or vm_state[vm] == state:
|
|
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
|
except Exception as e:
|
|
return False, 'Regex Error: {}'.format(e)
|
|
else:
|
|
# Check node to avoid unneeded ZK calls
|
|
if not node and not state:
|
|
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
|
else:
|
|
if vm_node[vm] == node or vm_state[vm] == state:
|
|
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
|
|
|
return True, vm_list
|
|
|
|
#
|
|
# CLI-specific functions
|
|
#
|
|
def format_info(zk_conn, domain_information, long_output):
|
|
# Format a nice output; do this line-by-line then concat the elements at the end
|
|
ainformation = []
|
|
ainformation.append('{}Virtual machine information:{}'.format(ansiprint.bold(), ansiprint.end()))
|
|
ainformation.append('')
|
|
# Basic information
|
|
ainformation.append('{}UUID:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['uuid']))
|
|
ainformation.append('{}Name:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['name']))
|
|
ainformation.append('{}Description:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['description']))
|
|
ainformation.append('{}Profile:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['profile']))
|
|
ainformation.append('{}Memory (M):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['memory']))
|
|
ainformation.append('{}vCPUs:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu']))
|
|
ainformation.append('{}Topology (S/C/T):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu_topology']))
|
|
|
|
if long_output is True:
|
|
# Virtualization information
|
|
ainformation.append('')
|
|
ainformation.append('{}Emulator:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['emulator']))
|
|
ainformation.append('{}Type:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['type']))
|
|
ainformation.append('{}Arch:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['arch']))
|
|
ainformation.append('{}Machine:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['machine']))
|
|
ainformation.append('{}Features:{} {}'.format(ansiprint.purple(), ansiprint.end(), ' '.join(domain_information['features'])))
|
|
|
|
# PVC cluster information
|
|
ainformation.append('')
|
|
dstate_colour = {
|
|
'start': ansiprint.green(),
|
|
'restart': ansiprint.yellow(),
|
|
'shutdown': ansiprint.yellow(),
|
|
'stop': ansiprint.red(),
|
|
'disable': ansiprint.blue(),
|
|
'fail': ansiprint.red(),
|
|
'migrate': ansiprint.blue(),
|
|
'unmigrate': ansiprint.blue()
|
|
}
|
|
ainformation.append('{}State:{} {}{}{}'.format(ansiprint.purple(), ansiprint.end(), dstate_colour[domain_information['state']], domain_information['state'], ansiprint.end()))
|
|
ainformation.append('{}Current Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['node']))
|
|
if not domain_information['last_node']:
|
|
domain_information['last_node'] = "N/A"
|
|
ainformation.append('{}Previous Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['last_node']))
|
|
|
|
# Get a failure reason if applicable
|
|
if domain_information['failed_reason']:
|
|
ainformation.append('')
|
|
ainformation.append('{}Failure reason:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['failed_reason']))
|
|
|
|
if not domain_information['node_selector']:
|
|
formatted_node_selector = "False"
|
|
else:
|
|
formatted_node_selector = domain_information['node_selector']
|
|
|
|
if not domain_information['node_limit']:
|
|
formatted_node_limit = "False"
|
|
else:
|
|
formatted_node_limit = ', '.join(domain_information['node_limit'])
|
|
|
|
if not domain_information['node_autostart']:
|
|
formatted_node_autostart = "False"
|
|
else:
|
|
formatted_node_autostart = domain_information['node_autostart']
|
|
|
|
if not domain_information['migration_method']:
|
|
formatted_migration_method = "False"
|
|
else:
|
|
formatted_migration_method = domain_information['migration_method']
|
|
|
|
ainformation.append('{}Migration selector:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_selector))
|
|
ainformation.append('{}Node limit:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_limit))
|
|
ainformation.append('{}Autostart:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_autostart))
|
|
ainformation.append('{}Migration Method:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_migration_method))
|
|
|
|
# Network list
|
|
net_list = []
|
|
for net in domain_information['networks']:
|
|
# Split out just the numerical (VNI) part of the brXXXX name
|
|
net_vnis = re.findall(r'\d+', net['source'])
|
|
if net_vnis:
|
|
net_vni = net_vnis[0]
|
|
else:
|
|
net_vni = re.sub('br', '', net['source'])
|
|
net_exists = zkhandler.exists(zk_conn, '/networks/{}'.format(net_vni))
|
|
if not net_exists and net_vni != 'cluster':
|
|
net_list.append(ansiprint.red() + net_vni + ansiprint.end() + ' [invalid]')
|
|
else:
|
|
net_list.append(net_vni)
|
|
ainformation.append('')
|
|
ainformation.append('{}Networks:{} {}'.format(ansiprint.purple(), ansiprint.end(), ', '.join(net_list)))
|
|
|
|
if long_output is True:
|
|
# Disk list
|
|
ainformation.append('')
|
|
name_length = 0
|
|
for disk in domain_information['disks']:
|
|
_name_length = len(disk['name']) + 1
|
|
if _name_length > name_length:
|
|
name_length = _name_length
|
|
ainformation.append('{0}Disks:{1} {2}ID Type {3: <{width}} Dev Bus{4}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), 'Name', ansiprint.end(), width=name_length))
|
|
for disk in domain_information['disks']:
|
|
ainformation.append(' {0: <3} {1: <5} {2: <{width}} {3: <4} {4: <5}'.format(domain_information['disks'].index(disk), disk['type'], disk['name'], disk['dev'], disk['bus'], width=name_length))
|
|
ainformation.append('')
|
|
ainformation.append('{}Interfaces:{} {}ID Type Source Model MAC{}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
|
|
for net in domain_information['networks']:
|
|
ainformation.append(' {0: <3} {1: <8} {2: <10} {3: <8} {4}'.format(domain_information['networks'].index(net), net['type'], net['source'], net['model'], net['mac']))
|
|
# Controller list
|
|
ainformation.append('')
|
|
ainformation.append('{}Controllers:{} {}ID Type Model{}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
|
|
for controller in domain_information['controllers']:
|
|
ainformation.append(' {0: <3} {1: <14} {2: <8}'.format(domain_information['controllers'].index(controller), controller['type'], controller['model']))
|
|
|
|
# Join it all together
|
|
information = '\n'.join(ainformation)
|
|
click.echo(information)
|
|
|
|
click.echo('')
|
|
|
|
def format_list(zk_conn, vm_list, raw):
|
|
# Function to strip the "br" off of nets and return a nicer list
|
|
def getNiceNetID(domain_information):
|
|
# Network list
|
|
net_list = []
|
|
for net in domain_information['networks']:
|
|
# Split out just the numerical (VNI) part of the brXXXX name
|
|
net_vnis = re.findall(r'\d+', net['source'])
|
|
if net_vnis:
|
|
net_vni = net_vnis[0]
|
|
else:
|
|
net_vni = re.sub('br', '', net['source'])
|
|
net_list.append(net_vni)
|
|
return net_list
|
|
|
|
# Handle raw mode since it just lists the names
|
|
if raw:
|
|
for vm in sorted(item['name'] for item in vm_list):
|
|
click.echo(vm)
|
|
return True, ''
|
|
|
|
vm_list_output = []
|
|
|
|
# Determine optimal column widths
|
|
# Dynamic columns: node_name, node, migrated
|
|
vm_name_length = 5
|
|
vm_uuid_length = 37
|
|
vm_state_length = 6
|
|
vm_nets_length = 9
|
|
vm_ram_length = 8
|
|
vm_vcpu_length = 6
|
|
vm_node_length = 8
|
|
vm_migrated_length = 10
|
|
for domain_information in vm_list:
|
|
net_list = getNiceNetID(domain_information)
|
|
# vm_name column
|
|
_vm_name_length = len(domain_information['name']) + 1
|
|
if _vm_name_length > vm_name_length:
|
|
vm_name_length = _vm_name_length
|
|
# vm_state column
|
|
_vm_state_length = len(domain_information['state']) + 1
|
|
if _vm_state_length > vm_state_length:
|
|
vm_state_length = _vm_state_length
|
|
# vm_nets column
|
|
_vm_nets_length = len(','.join(net_list)) + 1
|
|
if _vm_nets_length > vm_nets_length:
|
|
vm_nets_length = _vm_nets_length
|
|
# vm_node column
|
|
_vm_node_length = len(domain_information['node']) + 1
|
|
if _vm_node_length > vm_node_length:
|
|
vm_node_length = _vm_node_length
|
|
# vm_migrated column
|
|
_vm_migrated_length = len(domain_information['migrated']) + 1
|
|
if _vm_migrated_length > vm_migrated_length:
|
|
vm_migrated_length = _vm_migrated_length
|
|
|
|
# Format the string (header)
|
|
vm_list_output.append(
|
|
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
|
|
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
|
|
{vm_networks: <{vm_nets_length}} \
|
|
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
|
|
{vm_node: <{vm_node_length}} \
|
|
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
|
|
vm_name_length=vm_name_length,
|
|
vm_uuid_length=vm_uuid_length,
|
|
vm_state_length=vm_state_length,
|
|
vm_nets_length=vm_nets_length,
|
|
vm_ram_length=vm_ram_length,
|
|
vm_vcpu_length=vm_vcpu_length,
|
|
vm_node_length=vm_node_length,
|
|
vm_migrated_length=vm_migrated_length,
|
|
bold=ansiprint.bold(),
|
|
end_bold=ansiprint.end(),
|
|
vm_state_colour='',
|
|
end_colour='',
|
|
vm_name='Name',
|
|
vm_uuid='UUID',
|
|
vm_state='State',
|
|
vm_networks='Networks',
|
|
vm_memory='RAM (M)',
|
|
vm_vcpu='vCPUs',
|
|
vm_node='Node',
|
|
vm_migrated='Migrated'
|
|
)
|
|
)
|
|
|
|
# Format the string (elements)
|
|
for domain_information in vm_list:
|
|
if domain_information['state'] == 'start':
|
|
vm_state_colour = ansiprint.green()
|
|
elif domain_information['state'] == 'restart':
|
|
vm_state_colour = ansiprint.yellow()
|
|
elif domain_information['state'] == 'shutdown':
|
|
vm_state_colour = ansiprint.yellow()
|
|
elif domain_information['state'] == 'stop':
|
|
vm_state_colour = ansiprint.red()
|
|
elif domain_information['state'] == 'fail':
|
|
vm_state_colour = ansiprint.red()
|
|
else:
|
|
vm_state_colour = ansiprint.blue()
|
|
|
|
# Handle colouring for an invalid network config
|
|
raw_net_list = getNiceNetID(domain_information)
|
|
net_list = []
|
|
vm_net_colour = ''
|
|
for net_vni in raw_net_list:
|
|
net_exists = zkhandler.exists(zk_conn, '/networks/{}'.format(net_vni))
|
|
if not net_exists and net_vni != 'cluster':
|
|
vm_net_colour = ansiprint.red()
|
|
net_list.append(net_vni)
|
|
|
|
vm_list_output.append(
|
|
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
|
|
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
|
|
{vm_net_colour}{vm_networks: <{vm_nets_length}}{end_colour} \
|
|
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
|
|
{vm_node: <{vm_node_length}} \
|
|
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
|
|
vm_name_length=vm_name_length,
|
|
vm_uuid_length=vm_uuid_length,
|
|
vm_state_length=vm_state_length,
|
|
vm_nets_length=vm_nets_length,
|
|
vm_ram_length=vm_ram_length,
|
|
vm_vcpu_length=vm_vcpu_length,
|
|
vm_node_length=vm_node_length,
|
|
vm_migrated_length=vm_migrated_length,
|
|
bold='',
|
|
end_bold='',
|
|
vm_state_colour=vm_state_colour,
|
|
end_colour=ansiprint.end(),
|
|
vm_name=domain_information['name'],
|
|
vm_uuid=domain_information['uuid'],
|
|
vm_state=domain_information['state'],
|
|
vm_net_colour=vm_net_colour,
|
|
vm_networks=','.join(net_list),
|
|
vm_memory=domain_information['memory'],
|
|
vm_vcpu=domain_information['vcpu'],
|
|
vm_node=domain_information['node'],
|
|
vm_migrated=domain_information['migrated']
|
|
)
|
|
)
|
|
|
|
click.echo('\n'.join(sorted(vm_list_output)))
|
|
|
|
return True, ''
|