def cleanupResource(self, resource_name):
self.resource_name = resource_name
pcs('resource', 'cleanup', self.resource_name)
ret = createReturn(code=200, val='cleanup')
print(json.dumps(json.loads(ret), indent=4))
return ret
def destroyCluster(self):
try:
pcs('cluster', 'destroy', '--all')
ret = createReturn(code=200, val='destroy')
print(json.dumps(json.loads(ret), indent=4))
except:
ret = createReturn(code=400, val='cluster not found.')
print(json.dumps(json.loads(ret), indent=4))
return ret
def statusResource(self, resource_name):
self.resource_name = resource_name
resource = []
res={}
nodes = []
node_list = []
current_host = None
try:
xml = pcs('status', 'xml').stdout.decode()
soup = BeautifulSoup(xml, 'lxml')
soup_nodes = soup.find('nodes').select('node')
soup_resource = soup.select_one(f'#{self.resource_name}')
except:
ret = createReturn(code=400, val='cluster is not configured.')
print(json.dumps(json.loads(ret), indent=4))
sys.exit(0)
try:
if soup_resource['nodes_running_on'] == '1':
current_host = soup.select_one(f'#{self.resource_name}').select_one("node")['name']
except:
ret = createReturn(code=400, val='resource not found.')
print(json.dumps(json.loads(ret), indent=4))
sys.exit(0)
for soup_node in soup_nodes:
node = {}
node['host'] = soup_node['name']
node['online'] = soup_node['online']
node['resources_running'] = soup_node['resources_running']
node['standby'] = soup_node['standby']
node['standby_onfail'] = soup_node['standby_onfail']
node['maintenance'] = soup_node['maintenance']
node['pending'] = soup_node['pending']
node['unclean'] = soup_node['unclean']
node['shutdown'] = soup_node['shutdown']
node['expected_up'] = soup_node['expected_up']
node['is_dc'] = soup_node['is_dc']
node['type'] = soup_node['type']
nodes.append(node)
for i in range(0, len(nodes)):
clustered_hosts = nodes[i].get('host')
node_list.append(clustered_hosts)
res_active = res['active'] = soup_resource['active']
res_blocked = res['blocked'] = soup_resource['blocked']
res_failed = res['failed'] = soup_resource['failed']
res_role = res['role'] = soup_resource['role']
res['resource'] = soup_resource['id']
resource.append(res)
ret_val = {'clustered_host':node_list, 'nodes':nodes, 'started':current_host, 'role':res_role, 'active': res_active, 'blocked': res_blocked, 'failed': res_failed}
ret = createReturn(code=200, val=ret_val)
print(json.dumps(json.loads(ret), indent=4))
return ret
def createResource(self, resource_name, xml_path):
self.resource_name = resource_name
self.xml_path = xml_path
#pcs resource 생성 command
pcs('resource', 'create', self.resource_name, 'VirtualDomain', 'hypervisor=qemu:///system',
f'config={self.xml_path}', 'migration_transport=ssh',
'meta', 'allow-migrate=true', 'priority=100',
'op', 'start', 'timeout=120s',
'op', 'stop', 'timeout=120s',
'op', 'monitor', 'timeout=30', 'interval=10')
ret_val = {'resource name :':self.resource_name, 'hypervisor':'qemu:///system', 'config':self.xml_path, 'migration_transport':'ssh'}
ret = createReturn(code=200, val=ret_val)
print(json.dumps(json.loads(ret), indent=4))
return ret
def moveResource(self, resource_name, target_host):
self.resource_name = resource_name
self.target_host = target_host
current_host = None
xml = pcs('status', 'xml').stdout.decode()
soup = BeautifulSoup(xml, 'lxml')
soup_nodes = soup.find('nodes').select('node')
soup_resource = soup.select_one(f'#{self.resource_name}')
# pcs resource가 실행 중인 경우
if soup_resource['nodes_running_on'] == '1':
current_host = soup.select_one(
f'#{self.resource_name}').select_one("node")['name']
if current_host == self.target_host:
# print('현재 호스트로 마이그레이션 할 수 없습니다.')
ret = createReturn(code=500,
val='cannot be migrated to the same host.')
print(json.dumps(json.loads(ret), indent=4))
sys.exit(0)
elif current_host == None:
# print('정지 상태에서는 다른 호스트로 마이그레이션 할 수 없습니다.')
ret = createReturn(code=501,
val='Migration is not possible while stopped.')
print(json.dumps(json.loads(ret), indent=4))
sys.exit(0)
else:
pcs('resource', 'move', self.resource_name, self.target_host)
ret_val = {
'current host': current_host,
'target host': self.target_host
}
ret = createReturn(code=200, val=ret_val)
print(json.dumps(json.loads(ret), indent=4))
return ret
def configCluster(self, cluster_name, *hostnames):
self.cluster_name = cluster_name
self.hostnames = hostnames
#pcs cluster 구성 command
pcs('host', 'auth', '-u', 'hacluster', '-p', 'password', *self.hostnames)
pcs('cluster', 'setup', self.cluster_name, *self.hostnames)
pcs('cluster', 'start', '--all')
systemctl('enable', '--now', 'corosync.service')
systemctl('enable', '--now', 'pacemaker.service')
pcs('property', 'set', 'stonith-enabled=false')
ret_val = {'cluster name :':self.cluster_name, 'hosts': self.hostnames}
ret = createReturn(code=200, val=ret_val)
print(json.dumps(json.loads(ret), indent=4))
return ret
def removeResource(self, resource_name):
self.resource_name = resource_name
try:
pcs('resource', 'cleanup', self.resource_name)
pcs('resource', 'disable', self.resource_name)
pcs('resource', 'remove', self.resource_name)
pcs('resource', 'refresh')
ret = createReturn(code=200, val='remove')
print(json.dumps(json.loads(ret), indent=4))
except:
ret = createReturn(code=400, val='resource not found.')
print(json.dumps(json.loads(ret), indent=4))
return ret