Rework vm library for new zkhandler
This commit is contained in:
@@ -24,7 +24,6 @@ import re
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import lxml.objectify
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import lxml.etree
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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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@@ -33,20 +32,20 @@ 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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def getClusterDomainList(zkhandler):
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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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uuid_list = zkhandler.children('/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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name_list.append(zkhandler.read('/domains/{}'.format(uuid)))
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return uuid_list, name_list
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def searchClusterByUUID(zk_conn, uuid):
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def searchClusterByUUID(zkhandler, 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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uuid_list, name_list = getClusterDomainList(zkhandler)
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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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@@ -58,10 +57,10 @@ def searchClusterByUUID(zk_conn, uuid):
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return name
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def searchClusterByName(zk_conn, name):
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def searchClusterByName(zkhandler, 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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uuid_list, name_list = getClusterDomainList(zkhandler)
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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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@@ -73,67 +72,83 @@ def searchClusterByName(zk_conn, name):
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return uuid
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def getDomainUUID(zk_conn, domain):
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def getDomainUUID(zkhandler, 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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dom_name = searchClusterByUUID(zkhandler, domain)
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dom_uuid = searchClusterByName(zkhandler, 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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dom_uuid = searchClusterByName(zkhandler, domain)
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dom_name = searchClusterByUUID(zkhandler, dom_uuid)
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return dom_uuid
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def getDomainName(zk_conn, domain):
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def getDomainName(zkhandler, 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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dom_name = searchClusterByUUID(zkhandler, domain)
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dom_uuid = searchClusterByName(zkhandler, 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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dom_uuid = searchClusterByName(zkhandler, domain)
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dom_name = searchClusterByUUID(zkhandler, dom_uuid)
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return dom_name
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#
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# Helper functions
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#
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def change_state(zkhandler, dom_uuid, new_state):
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lock = zkhandler.exclusivelock('/domains/{}/state'.format(dom_uuid))
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with lock:
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zkhandler.write([
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('/domains/{}/state'.format(dom_uuid), new_state)
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])
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# Wait for 1/2 second to allow state to flow to all nodes
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time.sleep(0.5)
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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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def is_migrated(zkhandler, 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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dom_uuid = getDomainUUID(zkhandler, 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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last_node = zkhandler.read('/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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def flush_locks(zkhandler, 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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dom_uuid = getDomainUUID(zkhandler, 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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state = zkhandler.read('/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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zkhandler.write([
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('/cmd/domains', flush_locks_string)
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])
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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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lock = zkhandler.readlock('/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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result = zkhandler.read('/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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@@ -145,15 +160,17 @@ def flush_locks(zk_conn, domain):
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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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lock = zkhandler.writelock('/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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zkhandler.write([
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('/cmd/domains', '')
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])
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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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def define_vm(zkhandler, 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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@@ -163,14 +180,14 @@ def define_vm(zk_conn, config_data, target_node, node_limit, node_selector, node
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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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if searchClusterByUUID(zkhandler, dom_uuid) or searchClusterByName(zkhandler, 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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target_node = common.findTargetNode(zkhandler, 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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valid_node = common.verifyNode(zkhandler, 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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@@ -194,64 +211,64 @@ def define_vm(zk_conn, config_data, target_node, node_limit, node_selector, node
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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/{}/vnc'.format(dom_uuid): '',
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'/domains/{}/xml'.format(dom_uuid): config_data
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})
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zkhandler.write([
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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/{}/vnc'.format(dom_uuid), ''),
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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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def modify_vm_metadata(zkhandler, domain, node_limit, node_selector, node_autostart, provisioner_profile, migration_method):
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dom_uuid = getDomainUUID(zkhandler, 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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zkhandler.write([
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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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zkhandler.write([
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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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zkhandler.write([
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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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zkhandler.write([
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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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zkhandler.write([
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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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def modify_vm(zkhandler, domain, restart, new_vm_config):
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dom_uuid = getDomainUUID(zkhandler, 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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dom_name = getDomainName(zkhandler, domain)
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# Parse and valiate the XML
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try:
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@@ -273,45 +290,41 @@ def modify_vm(zk_conn, domain, restart, new_vm_config):
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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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zkhandler.write([
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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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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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change_state(zkhandler, dom_uuid, 'restart')
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return True, 'Successfully modified configuration of VM "{}".'.format(domain)
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def dump_vm(zk_conn, domain):
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dom_uuid = getDomainUUID(zk_conn, domain)
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def dump_vm(zkhandler, domain):
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dom_uuid = getDomainUUID(zkhandler, 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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vm_xml = zkhandler.read('/domains/{}/xml'.format(dom_uuid))
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return True, vm_xml
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def rename_vm(zk_conn, domain, new_domain):
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dom_uuid = getDomainUUID(zk_conn, domain)
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def rename_vm(zkhandler, domain, new_domain):
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dom_uuid = getDomainUUID(zkhandler, 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; renaming is not supported otherwise
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state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
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state = zkhandler.read('/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; VMs cannot be renamed while running.'.format(domain)
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# Parse and valiate the XML
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vm_config = common.getDomainXML(zk_conn, dom_uuid)
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vm_config = common.getDomainXML(zkhandler, dom_uuid)
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# Obtain the RBD disk list using the common functions
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ddisks = common.getDomainDisks(vm_config, {})
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@@ -328,207 +341,180 @@ def rename_vm(zk_conn, domain, new_domain):
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# Skip renaming if nothing changed
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if rbd_new == rbd:
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continue
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ceph.rename_volume(zk_conn, pool_list[idx], rbd, rbd_new)
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ceph.rename_volume(zkhandler, pool_list[idx], rbd, rbd_new)
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# Replace the name in the config
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vm_config_new = lxml.etree.tostring(vm_config, encoding='ascii', method='xml').decode().replace(domain, new_domain)
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# Get VM information
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_b, dom_info = get_info(zk_conn, dom_uuid)
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_b, dom_info = get_info(zkhandler, dom_uuid)
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# Undefine the old VM
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undefine_vm(zk_conn, dom_uuid)
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undefine_vm(zkhandler, dom_uuid)
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# Define the new VM
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define_vm(zk_conn, vm_config_new, dom_info['node'], dom_info['node_limit'], dom_info['node_selector'], dom_info['node_autostart'], migration_method=dom_info['migration_method'], profile=dom_info['profile'], initial_state='stop')
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define_vm(zkhandler, vm_config_new, dom_info['node'], dom_info['node_limit'], dom_info['node_selector'], dom_info['node_autostart'], migration_method=dom_info['migration_method'], profile=dom_info['profile'], initial_state='stop')
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# If the VM is migrated, store that
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if dom_info['migrated'] != 'no':
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zkhandler.writedata(zk_conn, {'/domains/{}/lastnode'.format(dom_uuid): dom_info['last_node']})
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zkhandler.write([
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('/domains/{}/lastnode'.format(dom_uuid), dom_info['last_node'])
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])
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return True, 'Successfully renamed VM "{}" to "{}".'.format(domain, new_domain)
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def undefine_vm(zk_conn, domain):
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def undefine_vm(zkhandler, 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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dom_uuid = getDomainUUID(zkhandler, 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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current_vm_state = zkhandler.read('/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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change_state(zkhandler, dom_uuid, 'stop')
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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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change_state(zkhandler, dom_uuid, 'delete')
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# Delete the configurations
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zkhandler.deletekey(zk_conn, '/domains/{}'.format(dom_uuid))
|
||||
zkhandler.delete('/domains/{}'.format(dom_uuid))
|
||||
|
||||
return True, 'Undefined VM "{}" from the cluster.'.format(domain)
|
||||
|
||||
|
||||
def remove_vm(zk_conn, domain):
|
||||
def remove_vm(zkhandler, domain):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, domain)
|
||||
if not dom_uuid:
|
||||
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||
|
||||
disk_list = common.getDomainDiskList(zk_conn, dom_uuid)
|
||||
disk_list = common.getDomainDiskList(zkhandler, dom_uuid)
|
||||
|
||||
# Shut down the VM
|
||||
current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
||||
current_vm_state = zkhandler.read('/domains/{}/state'.format(dom_uuid))
|
||||
if current_vm_state != 'stop':
|
||||
# Set the domain into stop mode
|
||||
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
||||
lock.acquire()
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'stop'})
|
||||
lock.release()
|
||||
|
||||
# Wait for 2 seconds to allow state to flow to all nodes
|
||||
time.sleep(2)
|
||||
change_state(zkhandler, dom_uuid, 'stop')
|
||||
|
||||
# Gracefully terminate the class instances
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'delete'})
|
||||
time.sleep(2)
|
||||
change_state(zkhandler, dom_uuid, 'delete')
|
||||
|
||||
# Delete the configurations
|
||||
zkhandler.deletekey(zk_conn, '/domains/{}'.format(dom_uuid))
|
||||
time.sleep(2)
|
||||
zkhandler.delete('/domains/{}'.format(dom_uuid))
|
||||
|
||||
# Wait for 1 second to allow state to flow to all nodes
|
||||
time.sleep(1)
|
||||
|
||||
# Remove disks
|
||||
for disk in disk_list:
|
||||
# vmpool/vmname_volume
|
||||
try:
|
||||
disk_pool, disk_name = disk.split('/')
|
||||
retcode, message = ceph.remove_volume(zk_conn, disk_pool, disk_name)
|
||||
retcode, message = ceph.remove_volume(zkhandler, disk_pool, disk_name)
|
||||
except ValueError:
|
||||
continue
|
||||
|
||||
return True, 'Removed VM "{}" and disks from the cluster.'.format(domain)
|
||||
|
||||
|
||||
def start_vm(zk_conn, domain):
|
||||
def start_vm(zkhandler, domain):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, domain)
|
||||
if not dom_uuid:
|
||||
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||
|
||||
# Set the VM to start
|
||||
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
||||
lock.acquire()
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'start'})
|
||||
lock.release()
|
||||
change_state(zkhandler, dom_uuid, 'start')
|
||||
|
||||
return True, 'Starting VM "{}".'.format(domain)
|
||||
|
||||
|
||||
def restart_vm(zk_conn, domain, wait=False):
|
||||
def restart_vm(zkhandler, domain, wait=False):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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))
|
||||
current_state = zkhandler.read('/domains/{}/state'.format(dom_uuid))
|
||||
if current_state != 'start':
|
||||
return False, 'ERROR: VM "{}" is not in "start" state!'.format(domain)
|
||||
|
||||
retmsg = 'Restarting VM "{}".'.format(domain)
|
||||
|
||||
# Set the VM to restart
|
||||
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
||||
lock.acquire()
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'restart'})
|
||||
lock.release()
|
||||
change_state(zkhandler, dom_uuid, 'restart')
|
||||
|
||||
if wait:
|
||||
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == 'restart':
|
||||
while zkhandler.read('/domains/{}/state'.format(dom_uuid)) == 'restart':
|
||||
time.sleep(1)
|
||||
retmsg = 'Restarted VM "{}"'.format(domain)
|
||||
|
||||
return True, retmsg
|
||||
|
||||
|
||||
def shutdown_vm(zk_conn, domain, wait=False):
|
||||
def shutdown_vm(zkhandler, domain, wait=False):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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))
|
||||
current_state = zkhandler.read('/domains/{}/state'.format(dom_uuid))
|
||||
if current_state != 'start':
|
||||
return False, 'ERROR: VM "{}" is not in "start" state!'.format(domain)
|
||||
|
||||
retmsg = 'Shutting down VM "{}"'.format(domain)
|
||||
|
||||
# Set the VM to shutdown
|
||||
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
||||
lock.acquire()
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'shutdown'})
|
||||
lock.release()
|
||||
change_state(zkhandler, dom_uuid, 'shutdown')
|
||||
|
||||
if wait:
|
||||
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == 'shutdown':
|
||||
while zkhandler.read('/domains/{}/state'.format(dom_uuid)) == 'shutdown':
|
||||
time.sleep(1)
|
||||
retmsg = 'Shut down VM "{}"'.format(domain)
|
||||
|
||||
return True, retmsg
|
||||
|
||||
|
||||
def stop_vm(zk_conn, domain):
|
||||
def stop_vm(zkhandler, domain):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, domain)
|
||||
if not dom_uuid:
|
||||
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
|
||||
|
||||
# Set the VM to start
|
||||
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
||||
lock.acquire()
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'stop'})
|
||||
lock.release()
|
||||
# Set the VM to stop
|
||||
change_state(zkhandler, dom_uuid, 'stop')
|
||||
|
||||
return True, 'Forcibly stopping VM "{}".'.format(domain)
|
||||
|
||||
|
||||
def disable_vm(zk_conn, domain):
|
||||
def disable_vm(zkhandler, domain):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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))
|
||||
current_state = zkhandler.read('/domains/{}/state'.format(dom_uuid))
|
||||
if current_state != 'stop':
|
||||
return False, 'ERROR: VM "{}" must be stopped before disabling!'.format(domain)
|
||||
|
||||
# Set the VM to start
|
||||
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
|
||||
lock.acquire()
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'disable'})
|
||||
lock.release()
|
||||
# Set the VM to disable
|
||||
change_state(zkhandler, dom_uuid, 'disable')
|
||||
|
||||
return True, 'Marked VM "{}" as disable.'.format(domain)
|
||||
|
||||
|
||||
def move_vm(zk_conn, domain, target_node, wait=False, force_live=False):
|
||||
def move_vm(zkhandler, domain, target_node, wait=False, force_live=False):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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))
|
||||
current_state = zkhandler.read('/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
|
||||
@@ -538,26 +524,28 @@ def move_vm(zk_conn, domain, target_node, wait=False, force_live=False):
|
||||
else:
|
||||
target_state = 'migrate'
|
||||
|
||||
current_node = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(dom_uuid))
|
||||
current_node = zkhandler.read('/domains/{}/node'.format(dom_uuid))
|
||||
|
||||
if not target_node:
|
||||
target_node = common.findTargetNode(zk_conn, dom_uuid)
|
||||
target_node = common.findTargetNode(zkhandler, dom_uuid)
|
||||
else:
|
||||
# Verify node is valid
|
||||
valid_node = common.verifyNode(zk_conn, target_node)
|
||||
valid_node = common.verifyNode(zkhandler, 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))
|
||||
node_limit = zkhandler.read('/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))
|
||||
last_node = zkhandler.read('/domains/{}/lastnode'.format(dom_uuid))
|
||||
if last_node:
|
||||
zkhandler.writedata(zk_conn, {'/domains/{}/lastnode'.format(dom_uuid): ''})
|
||||
zkhandler.write([
|
||||
('/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)
|
||||
@@ -567,31 +555,33 @@ def move_vm(zk_conn, domain, target_node, wait=False, force_live=False):
|
||||
|
||||
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()
|
||||
lock = zkhandler.exclusivelock('/domains/{}/state'.format(dom_uuid))
|
||||
with lock:
|
||||
zkhandler.write([
|
||||
('/domains/{}/state'.format(dom_uuid), target_state),
|
||||
('/domains/{}/node'.format(dom_uuid), target_node),
|
||||
('/domains/{}/lastnode'.format(dom_uuid), '')
|
||||
])
|
||||
|
||||
# Wait for 1/2 second for migration to start
|
||||
time.sleep(0.5)
|
||||
|
||||
if wait:
|
||||
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
|
||||
while zkhandler.read('/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):
|
||||
def migrate_vm(zkhandler, domain, target_node, force_migrate, wait=False, force_live=False):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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))
|
||||
current_state = zkhandler.read('/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
|
||||
@@ -601,22 +591,22 @@ def migrate_vm(zk_conn, domain, target_node, force_migrate, wait=False, force_li
|
||||
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))
|
||||
current_node = zkhandler.read('/domains/{}/node'.format(dom_uuid))
|
||||
last_node = zkhandler.read('/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)
|
||||
target_node = common.findTargetNode(zkhandler, dom_uuid)
|
||||
else:
|
||||
# Verify node is valid
|
||||
valid_node = common.verifyNode(zk_conn, target_node)
|
||||
valid_node = common.verifyNode(zkhandler, 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))
|
||||
node_limit = zkhandler.read('/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)
|
||||
|
||||
@@ -633,31 +623,33 @@ def migrate_vm(zk_conn, domain, target_node, force_migrate, wait=False, force_li
|
||||
|
||||
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()
|
||||
lock = zkhandler.exclusivelock(zkhandler, '/domains/{}/state'.format(dom_uuid))
|
||||
with lock:
|
||||
zkhandler.write([
|
||||
('/domains/{}/state'.format(dom_uuid), target_state),
|
||||
('/domains/{}/node'.format(dom_uuid), target_node),
|
||||
('/domains/{}/lastnode'.format(dom_uuid), current_node)
|
||||
])
|
||||
|
||||
# Wait for 1/2 second for migration to start
|
||||
time.sleep(0.5)
|
||||
|
||||
if wait:
|
||||
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
|
||||
while zkhandler.read('/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):
|
||||
def unmigrate_vm(zkhandler, domain, wait=False, force_live=False):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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))
|
||||
current_state = zkhandler.read('/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
|
||||
@@ -667,38 +659,40 @@ def unmigrate_vm(zk_conn, domain, wait=False, force_live=False):
|
||||
else:
|
||||
target_state = 'migrate'
|
||||
|
||||
target_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
|
||||
target_node = zkhandler.read('/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()
|
||||
lock = zkhandler.exclusivelock(zkhandler, '/domains/{}/state'.format(dom_uuid))
|
||||
with lock:
|
||||
zkhandler.write([
|
||||
('/domains/{}/state'.format(dom_uuid), target_state),
|
||||
('/domains/{}/node'.format(dom_uuid), target_node),
|
||||
('/domains/{}/lastnode'.format(dom_uuid), '')
|
||||
])
|
||||
|
||||
# Wait for 1/2 second for migration to start
|
||||
time.sleep(0.5)
|
||||
|
||||
if wait:
|
||||
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
|
||||
while zkhandler.read('/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):
|
||||
def get_console_log(zkhandler, domain, lines=1000):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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))
|
||||
console_log = zkhandler.read('/domains/{}/consolelog'.format(dom_uuid))
|
||||
|
||||
# Shrink the log buffer to length lines
|
||||
shrunk_log = console_log.split('\n')[-lines:]
|
||||
@@ -707,24 +701,24 @@ def get_console_log(zk_conn, domain, lines=1000):
|
||||
return True, loglines
|
||||
|
||||
|
||||
def get_info(zk_conn, domain):
|
||||
def get_info(zkhandler, domain):
|
||||
# Validate that VM exists in cluster
|
||||
dom_uuid = getDomainUUID(zk_conn, domain)
|
||||
dom_uuid = getDomainUUID(zkhandler, 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)
|
||||
domain_information = common.getInformationFromXML(zkhandler, 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):
|
||||
def get_list(zkhandler, node, state, limit, is_fuzzy=True):
|
||||
if node:
|
||||
# Verify node is valid
|
||||
if not common.verifyNode(zk_conn, node):
|
||||
if not common.verifyNode(zkhandler, node):
|
||||
return False, 'Specified node "{}" is invalid.'.format(node)
|
||||
|
||||
if state:
|
||||
@@ -732,7 +726,7 @@ def get_list(zk_conn, node, state, limit, is_fuzzy=True):
|
||||
if state not in valid_states:
|
||||
return False, 'VM state "{}" is not valid.'.format(state)
|
||||
|
||||
full_vm_list = zkhandler.listchildren(zk_conn, '/domains')
|
||||
full_vm_list = zkhandler.children('/domains')
|
||||
vm_list = []
|
||||
|
||||
# Set our limit to a sensible regex
|
||||
@@ -751,33 +745,33 @@ def get_list(zk_conn, node, state, limit, is_fuzzy=True):
|
||||
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))
|
||||
name = zkhandler.read('/domains/{}'.format(vm))
|
||||
vm_node[vm] = zkhandler.read('/domains/{}/node'.format(vm))
|
||||
vm_state[vm] = zkhandler.read('/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))
|
||||
vm_list.append(common.getInformationFromXML(zkhandler, vm))
|
||||
else:
|
||||
if vm_node[vm] == node or vm_state[vm] == state:
|
||||
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
||||
vm_list.append(common.getInformationFromXML(zkhandler, vm))
|
||||
|
||||
if re.match(limit, name):
|
||||
if not node and not state:
|
||||
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
||||
vm_list.append(common.getInformationFromXML(zkhandler, vm))
|
||||
else:
|
||||
if vm_node[vm] == node or vm_state[vm] == state:
|
||||
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
||||
vm_list.append(common.getInformationFromXML(zkhandler, 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))
|
||||
vm_list.append(common.getInformationFromXML(zkhandler, vm))
|
||||
else:
|
||||
if vm_node[vm] == node or vm_state[vm] == state:
|
||||
vm_list.append(common.getInformationFromXML(zk_conn, vm))
|
||||
vm_list.append(common.getInformationFromXML(zkhandler, vm))
|
||||
|
||||
return True, vm_list
|
||||
|
||||
Reference in New Issue
Block a user