def undo(self, workflow_dict):
LOG.info("Running undo...")
try:
databaseinfra = workflow_dict['databaseinfra']
for host in workflow_dict['stoped_hosts']:
LOG.info('Starting database on host {}'.format(host))
return_code, output = use_database_initialization_script(databaseinfra=databaseinfra,
host=host,
option='start')
if return_code != 0:
LOG.warn(str(output))
instance = host.instance_set.all()[0]
start_slave(instance=instance)
LOG.info('Wainting 30 seconds to setting flipper IPs')
sleep(30)
LOG.info('Setting read IP on {}'.format(workflow_dict['host']))
set_infra_read_ip(slave_host=workflow_dict['host'],
infra_name=databaseinfra.name)
LOG.info('Setting write IP on {}'.format(workflow_dict['not_primary_hosts'][0]))
set_infra_write_ip(master_host=workflow_dict['not_primary_hosts'][0],
infra_name=databaseinfra.name)
return True
except Exception:
traceback = full_stack()
workflow_dict['exceptions']['error_codes'].append(DBAAS_0021)
workflow_dict['exceptions']['traceback'].append(traceback)
return False
def do(self, workflow_dict):
try:
databaseinfra = workflow_dict['databaseinfra']
master_host = workflow_dict['host']
master_instance = Instance.objects.get(hostname=master_host)
secondary_host = workflow_dict['not_primary_hosts'][0]
secondary_instance = Instance.objects.get(hostname=secondary_host)
master_log_file, master_log_pos = get_replication_information_from_file(
host=master_host)
return_code, output = use_database_initialization_script(
databaseinfra=databaseinfra, host=master_host, option='start')
if return_code != 0:
raise Exception(str(output))
return_code, output = use_database_initialization_script(
databaseinfra=databaseinfra,
host=secondary_host,
option='start')
if return_code != 0:
raise Exception(str(output))
LOG.info("Waiting 1 minute to continue")
sleep(60)
change_master_to(instance=master_instance,
master_host=secondary_host.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
change_master_to(instance=secondary_instance,
master_host=master_host.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
start_slave(instance=master_instance)
start_slave(instance=secondary_instance)
LOG.info("Waiting 30 seconds to continue")
sleep(30)
set_infra_read_ip(slave_host=workflow_dict['host'],
infra_name=databaseinfra.name)
set_infra_write_ip(
master_host=workflow_dict['not_primary_hosts'][0],
infra_name=databaseinfra.name)
return True
except Exception:
traceback = full_stack()
workflow_dict['exceptions']['error_codes'].append(DBAAS_0020)
workflow_dict['exceptions']['traceback'].append(traceback)
return False
def do(self, workflow_dict):
try:
databaseinfra = workflow_dict['databaseinfra']
master_host = workflow_dict['host']
master_instance = Instance.objects.get(hostname=master_host)
secondary_host = workflow_dict['not_primary_hosts'][0]
secondary_instance = Instance.objects.get(hostname=secondary_host)
master_log_file, master_log_pos = get_replication_information_from_file(host=master_host)
return_code, output = use_database_initialization_script(databaseinfra=databaseinfra,
host=master_host,
option='start')
if return_code != 0:
raise Exception(str(output))
return_code, output = use_database_initialization_script(databaseinfra=databaseinfra,
host=secondary_host,
option='start')
if return_code != 0:
raise Exception(str(output))
LOG.info("Waiting 1 minute to continue")
sleep(60)
change_master_to(instance=master_instance,
master_host=secondary_host.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
change_master_to(instance=secondary_instance,
master_host=master_host.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
start_slave(instance=master_instance)
start_slave(instance=secondary_instance)
LOG.info("Waiting 30 seconds to continue")
sleep(30)
set_infra_read_ip(slave_host=workflow_dict['host'],
infra_name=databaseinfra.name)
set_infra_write_ip(master_host=workflow_dict['not_primary_hosts'][0],
infra_name=databaseinfra.name)
return True
except Exception:
traceback = full_stack()
workflow_dict['exceptions']['error_codes'].append(DBAAS_0020)
workflow_dict['exceptions']['traceback'].append(traceback)
return False
def undo(self, workflow_dict):
LOG.info("Running undo...")
try:
databaseinfra = workflow_dict['databaseinfra']
for host in workflow_dict['stoped_hosts']:
LOG.info('Starting database on host {}'.format(host))
return_code, output = use_database_initialization_script(
databaseinfra=databaseinfra, host=host, option='start')
if return_code != 0:
LOG.warn(str(output))
instance = host.instance_set.all()[0]
start_slave(instance=instance)
LOG.info('Wainting 30 seconds to setting flipper IPs')
sleep(30)
LOG.info('Setting read IP on {}'.format(workflow_dict['host']))
set_infra_read_ip(slave_host=workflow_dict['host'],
infra_name=databaseinfra.name)
LOG.info('Setting write IP on {}'.format(
workflow_dict['not_primary_hosts'][0]))
set_infra_write_ip(
master_host=workflow_dict['not_primary_hosts'][0],
infra_name=databaseinfra.name)
return True
except Exception:
traceback = full_stack()
workflow_dict['exceptions']['error_codes'].append(DBAAS_0021)
workflow_dict['exceptions']['traceback'].append(traceback)
return False