def cstop(self, master=True, slave=True):
"""Stop current masters or slaves
"""
center = Center()
center.update_ip_port()
success = center.check_hosts_connection()
if not success:
return
center.stop_current_nodes(master, slave)
def rowcount(self):
"""Query and show cluster row count
"""
logger.debug('rowcount')
masters = []
center = Center()
center.update_ip_port()
master_nodes = center.get_master_obj_list()
for master_node in master_nodes:
node = master_node['addr']
masters.append(node)
# open-redis-cli-all info Tablespace | grep totalRows | awk -F ',
# ' '{print $4}' | awk -F '=' '{sum += $2} END {print sum}'
ret = RedisCliUtil.command_all_async('info Tablespace', slave=True)
outs = ''
for _, host, port, res, stdout in ret:
if res == 'OK':
endpoint = '{}:{}'.format(host, port)
if endpoint in masters:
outs = '\n'.join([outs, stdout])
else:
logger.warning("FAIL {}:{} {}".format(host, port, stdout))
lines = outs.splitlines()
key = 'totalRows'
partitions = 'partitions'
evictions = 'evictedRows'
filtered_lines = (filter(lambda x: key in x, lines))
#self._print(filtered_lines)
# Table list
table_list = []
result = []
for line in filtered_lines:
tableStats, _ = line.split(':')
tableId = tableStats.split('_')
if tableId[1] in table_list:
pass
else:
table_list.append(tableId[1])
for tid in table_list:
table_lines = (filter(lambda x: tid in x, filtered_lines))
ld = RedisCliUtil.to_list_of_dict(table_lines)
row_count = reduce(lambda x, y: x + int(y[key]), ld, 0)
partitions_count = reduce(lambda x, y: x + int(y[partitions]), ld,
0)
evictions_count = reduce(lambda x, y: x + int(y[evictions]), ld, 0)
result.append([tid, row_count, partitions_count, evictions_count])
utils.print_table(
[['Table_ID', 'ROW_COUNT', 'PARTITION_COUNT', 'EVICTED_ROWS']] +
result)
def start(self, profile=False, master=True, slave=True):
"""Start cluster
:param master: If exclude master cluster, set False
:param slave: If exclude slave cluster, set False
"""
logger.debug("command 'cluster start'")
if not isinstance(profile, bool):
msg = message.get('error_option_type_not_boolean')
msg = msg.format(option='profile')
logger.error(msg)
return
if not isinstance(master, bool):
msg = message.get('error_option_type_not_boolean')
msg = msg.format(option='master')
logger.error(msg)
return
if not isinstance(slave, bool):
msg = message.get('error_option_type_not_boolean')
msg = msg.format(option='slave')
logger.error(msg)
return
center = Center()
center.update_ip_port()
success = center.check_hosts_connection()
if not success:
return
center.ensure_cluster_exist()
if master:
master_alive_count = center.get_alive_master_redis_count()
master_alive_count_mine = center.get_alive_master_redis_count(
check_owner=True)
not_mine_count = master_alive_count - master_alive_count_mine
if not_mine_count > 0:
msg = message.get('error_cluster_start_master_collision')
msg = '\n'.join(msg).format(count=not_mine_count)
raise LightningDBError(11, msg)
if slave:
slave_alive_count = center.get_alive_slave_redis_count()
slave_alive_count_mine = center.get_alive_slave_redis_count(
check_owner=True)
not_mine_count = slave_alive_count - slave_alive_count_mine
if not_mine_count > 0:
msg = message.get('error_cluster_start_slave_collision')
msg = '\n'.join(msg).format(count=not_mine_count)
raise LightningDBError(12, msg)
center.backup_server_logs(master=master, slave=slave)
center.create_redis_data_directory()
# equal to cluster.configure()
center.configure_redis()
center.sync_conf(show_result=True)
center.start_redis_process(profile, master=master, slave=slave)
center.wait_until_all_redis_process_up(master=master, slave=slave)
def configure(self):
"""Configure cluster
Make conf file of redis with redis properties information.
"""
center = Center()
center.update_ip_port()
success = center.check_hosts_connection()
if not success:
return
center.configure_redis()
center.sync_conf(show_result=True)
def thriftserver(self):
"""Edit 'thriftserver.properties'
"""
cluster_id = config.get_cur_cluster_id()
path_of_fb = config.get_path_of_fb(cluster_id)
target_path = path_of_fb['thrift_properties']
self._edit_conf(target_path, syntax='sh')
center = Center()
center.update_ip_port()
success = center.check_hosts_connection()
if not success:
return
success = center.sync_file(target_path)
if success:
msg = message.get('complete_conf_edit')
logger.info(msg)
def slave(self):
"""Edit 'redis-slave.conf.template'
"""
cluster_id = config.get_cur_cluster_id()
path_of_fb = config.get_path_of_fb(cluster_id)
target_path = path_of_fb['slave_template']
self._edit_conf(target_path, syntax='sh')
center = Center()
center.update_ip_port()
success = center.check_hosts_connection()
if not success:
return
success = center.sync_file(target_path)
if success:
msg = message.get('complete_conf_edit')
logger.info(msg)
def force_failover(self, server):
""" Find all masters on the server and convert them to slaves. Finally, in the server, only slaves will be remained.
:param server: IP or hostname
"""
logger.debug('force_failover')
center = Center()
center.update_ip_port()
master_nodes = center.get_master_obj_list()
cluster_id = config.get_cur_cluster_id()
lib_path = config.get_ld_library_path(cluster_id)
path_of_fb = config.get_path_of_fb(cluster_id)
sr2_redis_bin = path_of_fb['sr2_redis_bin']
env_cmd = [
'GLOBIGNORE=*;',
'export LD_LIBRARY_PATH={};'.format(lib_path['ld_library_path']),
'export DYLD_LIBRARY_PATH={};'.format(
lib_path['dyld_library_path']),
]
redis_cli_cmd = os.path.join(sr2_redis_bin, 'redis-cli')
outs = ''
meta = []
m_endpoint = []
for node in master_nodes:
addr = node['addr']
(host, port) = addr.split(':')
# if host == server:
if self.compare_ip(host, server):
for slave_node in node['slaves']:
addr = slave_node['addr']
(s_host, s_port) = addr.split(':')
sub_cmd = 'cluster failover takeover'
command = '{} {} -h {} -p {} {}'.format(
' '.join(env_cmd),
redis_cli_cmd,
s_host,
s_port,
sub_cmd,
)
self._print(
message.get('try_failover_takeover').format(
slave=addr))
stdout = subprocess.check_output(command, shell=True)
self._print(stdout)
def failback(self):
"""Restart disconnected redis
"""
center = Center()
center.update_ip_port()
master_obj_list = center.get_master_obj_list()
disconnected_list = []
paused_list = []
for master in master_obj_list:
if master['status'] == 'disconnected':
disconnected_list.append(master['addr'])
if master['status'] == 'paused':
paused_list.append(master['addr'])
for slave in master['slaves']:
if slave['status'] == 'disconnected':
disconnected_list.append(slave['addr'])
if slave['status'] == 'paused':
paused_list.append(slave['addr'])
classified_disconnected_list = {}
classified_paused_list = {}
for disconnected in disconnected_list:
host, port = disconnected.split(':')
if host not in classified_disconnected_list:
classified_disconnected_list[host] = []
classified_disconnected_list[host].append(port)
for paused in paused_list:
host, port = paused.split(':')
if host not in classified_paused_list:
classified_paused_list[host] = []
classified_paused_list[host].append(port)
current_time = time.strftime("%Y%m%d-%H%M", time.gmtime())
for host, ports in classified_disconnected_list.items():
msg = message.get('redis_run')
msg = msg.format(host=host, ports='|'.join(ports))
logger.info(msg)
center.run_redis_process(host, ports, False, current_time)
for host, ports in classified_paused_list.items():
msg = message.get('redis_restart')
msg = msg.format(host=host, ports='|'.join(ports))
logger.info(msg)
center.stop_redis_process(host, ports)
center.run_redis_process(host, ports, False, current_time)
if not classified_disconnected_list and not classified_paused_list:
msg = message.get('already_all_redis_alive')
logger.info(msg)
def distribution(self):
"""Check the distribution of all masters and slaves
"""
center = Center()
center.update_ip_port()
logger.debug('distribution')
ret = RedisCliUtil.command_all_async('cluster nodes', slave=True)
outs = ''
for _, host, port, res, stdout in ret:
if res == 'OK':
outs = '\n'.join([outs, stdout])
lines = outs.splitlines()
myself_key = 'myself'
filtered_lines = (filter(lambda x: myself_key in x, lines))
else:
logger.warning("FAIL {}:{} {}".format(host, port, stdout))
meta = []
total_masters = 0
total_slaves = 0
for nd in center.master_host_list:
num_of_masters = 0
num_of_slaves = 0
node = socket.gethostbyname(nd)
host_lines = (filter(lambda x: (node + ':') in x, filtered_lines))
for node in host_lines:
params = node.split()
endpoint = params[1]
roles = params[2]
host = endpoint.split(':')[0]
role = roles.split(',')[1]
if role == 'master':
if len(params) == 9:
num_of_masters += 1
else:
num_of_slaves += 1
total_masters += num_of_masters
total_slaves += num_of_slaves
hostname = str(socket.gethostbyaddr(host)[0]) + str('(') + str(
host) + str(')')
meta.append([hostname, num_of_masters, num_of_slaves])
meta.append(['TOTAL', total_masters, total_slaves])
utils.print_table([['HOST', 'MASTER', 'SLAVE']] + meta)
def delete(self, cluster_id):
"""Delete cluster
It is automatically backed up with timestamps as tags
:param cluster_id: target cluster id
"""
if not cluster_util.validate_id(cluster_id):
raise ClusterIdError(cluster_id)
path_of_fb = config.get_path_of_fb(cluster_id)
props_path = path_of_fb['redis_properties']
hosts = config.get_props(props_path, 'sr2_redis_master_hosts', [])
tag = time.strftime("%Y%m%d%H%M%S", time.gmtime())
cluster_backup_dir = 'cluster_{}_bak_{}'.format(cluster_id, tag)
for host in hosts:
Center().cluster_backup(host, cluster_id, cluster_backup_dir)
msg = message.get('cluster_delete_complete')
msg = msg.format(cluster_id=cluster_id)
logger.info(msg)
def clean(self, logs=False):
"""Clean cluster
Delete redis config, data, node configuration.
:param log: Delete log of redis
"""
if not isinstance(logs, bool):
msg = message.get('error_option_type_not_boolean')
msg = msg.format(option='logs')
logger.error(msg)
return
center = Center()
center.update_ip_port()
if logs:
center.remove_all_of_redis_log_force()
return
center.cluster_clean()
msg = message.get('apply_after_restart')
logger.info(msg)
def reset_distribution(self):
""" Reset the distribution of masters and slaves with original setting
"""
center = Center()
center.update_ip_port()
logger.debug('reset_distribution')
cluster_id = config.get_cur_cluster_id()
lib_path = config.get_ld_library_path(cluster_id)
path_of_fb = config.get_path_of_fb(cluster_id)
sr2_redis_bin = path_of_fb['sr2_redis_bin']
env_cmd = [
'GLOBIGNORE=*;',
'export LD_LIBRARY_PATH={};'.format(lib_path['ld_library_path']),
'export DYLD_LIBRARY_PATH={};'.format(
lib_path['dyld_library_path']),
]
redis_cli_cmd = os.path.join(sr2_redis_bin, 'redis-cli')
slave_nodes = center.get_slave_nodes()
master_ports = center.master_port_list
for slave_node in slave_nodes:
(host, port) = slave_node.split(':')
try:
value = int(port)
if value in master_ports:
# failover takeover
msg = message.get('try_failover_takeover').format(
slave=slave_node)
self._print(msg)
sub_cmd = 'cluster failover takeover'
command = '{} {} -h {} -p {} {}'.format(
' '.join(env_cmd),
redis_cli_cmd,
host,
port,
sub_cmd,
)
stdout = subprocess.check_output(command, shell=True)
outs = ''
outs = '\n'.join([outs, stdout])
self._print(outs)
except ValueError:
pass
def nodes_with_dir(self, server, dir):
"""Find nodes that use the specified directory path
:param server: IP or hostname
:param dir: directory path
"""
center = Center()
center.update_ip_port()
logger.debug('nodes_with_dir')
ret = RedisCliUtil.command_all_async('config get dir', slave=True)
outs = ''
meta = []
for _, host, port, res, stdout in ret:
if res == 'OK':
flat_stdout = '\n'.join([outs, stdout])
line = flat_stdout.splitlines()
if self.compare_ip(host, server) and dir in line[2]:
meta.append([host, port, line[2]])
else:
logger.warning("FAIL {}:{} {}".format(host, port, stdout))
utils.print_table([['HOST', 'PORT', 'PATH']] + meta)
def forget_noaddr(self):
"""Forget noaddr nodes that is not used anymore in cluster
"""
center = Center()
center.update_ip_port()
logger.debug('forget_noaddr')
ret = RedisCliUtil.command_all_async('cluster nodes', slave=True)
outs = ''
meta = []
for _, host, port, res, stdout in ret:
if res == 'OK':
outs = '\n'.join([outs, stdout])
lines = outs.splitlines()
filtered_lines = (filter(lambda x: 'noaddr' in x, lines))
else:
logger.warning("FAIL {}:{} {}".format(host, port, stdout))
total_list = []
for line in filtered_lines:
total_list.append(line.split()[0])
# Remove duplicates
unique_list = list(set(total_list))
# Forget noaddr uuid
for uuid in unique_list:
sub_cmd = 'cluster forget "{id}" 2>&1'.format(id=uuid)
ret = RedisCliUtil.command_all_async(sub_cmd, slave=True)
count = 0
for _, host, port, res, stdout in ret:
if res == 'OK':
count += 1
pass
else:
logger.warning("FAIL {}:{} {}".format(host, port, stdout))
msg = '{num} nodes have forgot {id}'.format(num=count, id=uuid)
self._print(msg)
def _deploy(cluster_id, history_save, clean):
deploy_state = DeployUtil().get_state(cluster_id)
if deploy_state == DEPLOYED:
msg = message.get('ask_deploy_again')
msg = msg.format(cluster_id=cluster_id)
msg = color.yellow(msg)
yes = ask_util.askBool(msg, default='n')
if not yes:
logger.info(message.get('cancel'))
return
restore_yes = None
no_localhost = False
current_time = time.strftime("%Y%m%d%H%M%S", time.gmtime())
cluster_backup_dir = 'cluster_{}_bak_{}'.format(cluster_id, current_time)
conf_backup_dir = 'cluster_{}_conf_bak_{}'.format(cluster_id, current_time)
tmp_backup_dir = 'cluster_{}_conf_bak_{}'.format(cluster_id, 'tmp')
meta = [['NAME', 'VALUE']]
path_of_fb = config.get_path_of_fb(cluster_id)
conf_path = path_of_fb['conf_path']
props_path = path_of_fb['redis_properties']
cluster_path = path_of_fb['cluster_path']
path_of_cli = config.get_path_of_cli(cluster_id)
conf_backup_path = path_of_cli['conf_backup_path']
tmp_backup_path = os.path.join(conf_backup_path, tmp_backup_dir)
local_ip = config.get_local_ip()
# ask installer
installer_path = ask_util.installer()
installer_name = os.path.basename(installer_path)
meta.append(['installer', installer_name])
# ask restore conf
if deploy_state == DEPLOYED:
restore_yes = ask_util.askBool(message.get('ask_restore_conf'))
meta.append(['restore', restore_yes])
# input props
hosts = []
if deploy_state == DEPLOYED:
if restore_yes:
meta += DeployUtil().get_meta_from_props(props_path)
hosts = config.get_props(props_path, 'sr2_redis_master_hosts')
else:
if not os.path.isdir(conf_backup_path):
os.mkdir(conf_backup_path)
if os.path.exists(tmp_backup_path):
msg = message.get('ask_load_history_of_previous_modification')
yes = ask_util.askBool(msg)
if not yes:
shutil.rmtree(tmp_backup_path)
if not os.path.exists(tmp_backup_path):
os.mkdir(tmp_backup_path)
shutil.copy(os.path.join(conf_path, 'redis.properties'),
os.path.join(tmp_backup_path, 'redis.properties'))
tmp_props_path = os.path.join(tmp_backup_path, 'redis.properties')
editor.edit(tmp_props_path, syntax='sh')
meta += DeployUtil().get_meta_from_props(tmp_props_path)
hosts = config.get_props(tmp_props_path, 'sr2_redis_master_hosts')
else:
# new deploy
props_dict = ask_util.props(cluster_id, save=history_save)
hosts = props_dict['hosts']
meta += DeployUtil().get_meta_from_dict(props_dict)
utils.print_table(meta)
msg = message.get('confirm_deploy_information')
yes = ask_util.askBool(msg)
if not yes:
logger.info(message.get('cancel'))
return
# check node status
success = Center().check_hosts_connection(hosts, True)
if not success:
msg = message.get('error_exist_unavailable_host')
logger.error(msg)
return
logger.debug('Connection of all hosts ok.')
success = Center().check_include_localhost(hosts)
if not success:
no_localhost = True
# get port info
if deploy_state == DEPLOYED:
if restore_yes:
key = 'sr2_redis_master_ports'
m_ports = config.get_props(props_path, key, [])
key = 'sr2_redis_slave_ports'
s_ports = config.get_props(props_path, key, [])
replicas = len(s_ports) // len(m_ports)
else:
key = 'sr2_redis_master_ports'
m_ports = config.get_props(tmp_props_path, key, [])
key = 'sr2_redis_slave_ports'
s_ports = config.get_props(tmp_props_path, key, [])
replicas = len(s_ports) // len(m_ports)
else:
m_ports = props_dict['master_ports']
s_ports = props_dict['slave_ports']
replicas = props_dict['replicas']
while True:
msg = message.get('check_port')
logger.info(msg)
host_ports_list = []
for host in hosts:
host_ports_list.append((host, m_ports + s_ports))
conflict = Center().check_port_is_enable(host_ports_list)
if not conflict:
logger.info("OK")
break
utils.print_table([["HOST", "PORT"]] + conflict)
msg = message.get('ask_port_collision')
msg = color.yellow(msg)
yes = ask_util.askBool(msg)
if yes:
logger.info("OK")
break
m_ports = ask_util.master_ports(False, cluster_id)
replicas = ask_util.replicas(False)
s_ports = ask_util.slave_ports(cluster_id, len(m_ports), replicas)
if deploy_state == DEPLOYED:
if restore_yes:
key = 'sr2_redis_master_ports'
value = cluster_util.convert_list_2_seq(m_ports)
config.set_props(props_path, key, value)
key = 'sr2_redis_slave_ports'
value = cluster_util.convert_list_2_seq(s_ports)
config.set_props(props_path, key, value)
else:
key = 'sr2_redis_master_ports'
value = cluster_util.convert_list_2_seq(m_ports)
config.set_props(tmp_props_path, key, value)
key = 'sr2_redis_slave_ports'
value = cluster_util.convert_list_2_seq(s_ports)
config.set_props(tmp_props_path, key, value)
else:
props_dict['master_ports'] = m_ports
props_dict['slave_ports'] = s_ports
props_dict['replicas'] = replicas
# if pending, delete legacy on each hosts
if no_localhost:
if DeployUtil().get_state(cluster_id, local_ip) == PENDING:
client = net.get_ssh(local_ip)
command = 'rm -rf {}'.format(cluster_path)
net.ssh_execute(client=client, command=command)
client.close()
for host in hosts:
if DeployUtil().get_state(cluster_id, host) == PENDING:
client = net.get_ssh(host)
command = 'rm -rf {}'.format(cluster_path)
net.ssh_execute(client=client, command=command)
client.close()
# added_hosts = post_hosts - pre_hosts
msg = message.get('check_cluster_exist')
logger.info(msg)
added_hosts = set(hosts)
meta = []
if deploy_state == DEPLOYED:
pre_hosts = config.get_props(props_path, 'sr2_redis_master_hosts')
added_hosts -= set(pre_hosts)
can_deploy = True
if no_localhost:
added_hosts |= set([local_ip])
for host in added_hosts:
client = net.get_ssh(host)
is_localhost = Center().is_localhost(host)
if is_localhost:
if no_localhost:
continue
if os.path.exists(cluster_path + '/remote'):
meta.append([host, color.green('CLEAN')])
continue
if net.is_exist(client, cluster_path):
meta.append([host, color.red('CLUSTER EXIST')])
can_deploy = False
continue
meta.append([host, color.green('CLEAN')])
if meta:
utils.print_table([['HOST', 'STATUS']] + meta)
if not can_deploy:
msg = message.get('error_cluster_collision')
logger.error(msg)
return
# if not force:
# logger.error("If you trying to force, use option '--force'")
# return
logger.info('OK')
# cluster stop and clean
if deploy_state == DEPLOYED and clean:
center = Center()
cur_cluster_id = config.get_cur_cluster_id(allow_empty_id=True)
run_cluster_use(cluster_id)
center.update_ip_port()
center.stop_redis()
center.remove_all_of_redis_log_force()
center.cluster_clean()
run_cluster_use(cur_cluster_id)
# backup conf
if deploy_state == DEPLOYED:
Center().conf_backup(local_ip, cluster_id, conf_backup_dir)
# backup cluster
backup_hosts = []
if deploy_state == DEPLOYED:
backup_hosts += set(pre_hosts)
# if force:
# backup_hosts += added_hosts
for host in backup_hosts:
cluster_path = path_of_fb['cluster_path']
client = net.get_ssh(host)
Center().cluster_backup(host, cluster_id, cluster_backup_dir)
client.close()
# transfer & install
msg = message.get('transfer_and_execute_installer')
logger.info(msg)
target_hosts = hosts + [local_ip] if no_localhost else hosts
for host in target_hosts:
if not (no_localhost and Center().is_localhost(host)):
logger.info(' - {}'.format(host))
client = net.get_ssh(host)
cmd = 'mkdir -p {0} && touch {0}/.deploy.state'.format(cluster_path)
net.ssh_execute(client=client, command=cmd)
client.close()
DeployUtil().transfer_installer(host, cluster_id, installer_path)
try:
DeployUtil().install(host, cluster_id, installer_name)
except SSHCommandError as ex:
msg = message.get('error_execute_installer')
msg = msg.format(installer=installer_path)
logger.error(msg)
logger.exception(ex)
return
# setup props
if deploy_state == DEPLOYED:
if restore_yes:
tag = conf_backup_dir
else:
tag = tmp_backup_dir
Center().conf_restore(local_ip, cluster_id, tag)
else:
key = 'sr2_redis_master_hosts'
config.make_key_enable(props_path, key)
config.set_props(props_path, key, props_dict['hosts'])
key = 'sr2_redis_master_ports'
config.make_key_enable(props_path, key)
value = cluster_util.convert_list_2_seq(props_dict['master_ports'])
config.set_props(props_path, key, value)
key = 'sr2_redis_slave_hosts'
config.make_key_enable(props_path, key)
config.set_props(props_path, key, props_dict['hosts'])
config.make_key_disable(props_path, key)
if props_dict['replicas'] > 0:
key = 'sr2_redis_slave_hosts'
config.make_key_enable(props_path, key)
key = 'sr2_redis_slave_ports'
config.make_key_enable(props_path, key)
value = cluster_util.convert_list_2_seq(props_dict['slave_ports'])
config.set_props(props_path, key, value)
key = 'ssd_count'
config.make_key_enable(props_path, key)
config.set_props(props_path, key, props_dict['ssd_count'])
key = 'sr2_redis_data'
config.make_key_enable(props_path, key, v1_flg=True)
config.make_key_enable(props_path, key, v1_flg=True)
config.make_key_disable(props_path, key)
config.set_props(props_path, key, props_dict['prefix_of_db_path'])
key = 'sr2_redis_db_path'
config.make_key_enable(props_path, key, v1_flg=True)
config.make_key_enable(props_path, key, v1_flg=True)
config.make_key_disable(props_path, key)
config.set_props(props_path, key, props_dict['prefix_of_db_path'])
key = 'sr2_flash_db_path'
config.make_key_enable(props_path, key, v1_flg=True)
config.make_key_enable(props_path, key, v1_flg=True)
config.make_key_disable(props_path, key)
config.set_props(props_path, key, props_dict['prefix_of_db_path'])
# synk props
msg = message.get('sync_conf')
logger.info(msg)
for node in hosts:
if socket.gethostbyname(node) in config.get_local_ip_list():
continue
client = net.get_ssh(node)
if not client:
msg = message.get('error_ssh_connection').format(host=node)
logger.error(msg)
return
net.copy_dir_to_remote(client, conf_path, conf_path)
client.close()
# set deploy state complete
if os.path.exists(tmp_backup_path):
shutil.rmtree(tmp_backup_path)
for node in target_hosts:
path_of_fb = config.get_path_of_fb(cluster_id)
cluster_path = path_of_fb['cluster_path']
client = net.get_ssh(node)
cmd = 'rm -rf {}'.format(os.path.join(cluster_path, '.deploy.state'))
net.ssh_execute(client=client, command=cmd)
client.close()
if no_localhost:
os.system('touch {}/remote'.format(cluster_path))
msg = message.get('complete_deploy').format(cluster_id=cluster_id)
logger.info(msg)
Cluster().use(cluster_id)
msg = message.get('suggest_after_deploy')
logger.info(msg)
def _deploy_zero_downtime(cluster_id):
logger.debug("zero downtime update cluster {}".format(cluster_id))
center = Center()
center.update_ip_port()
m_hosts = center.master_host_list
m_ports = center.master_port_list
s_hosts = center.slave_host_list
s_ports = center.slave_port_list
path_of_fb = config.get_path_of_fb(cluster_id)
cluster_path = path_of_fb['cluster_path']
# check master alive
m_count = len(m_hosts) * len(m_ports)
alive_m_count = center.get_alive_master_redis_count()
if alive_m_count < m_count:
logger.error(message.get('error_exist_disconnected_master'))
return
if not config.is_slave_enabled:
logger.error(message.get('error_need_to_slave'))
return
# select installer
installer_path = ask_util.installer()
installer_name = os.path.basename(installer_path)
# backup info
current_time = time.strftime("%Y%m%d%H%M%S", time.gmtime())
conf_backup_dir = 'cluster_{}_conf_bak_{}'.format(cluster_id, current_time)
cluster_backup_dir = 'cluster_{}_bak_{}'.format(cluster_id, current_time)
local_ip = config.get_local_ip()
# backup conf
center.conf_backup(local_ip, cluster_id, conf_backup_dir)
# backup cluster
for host in s_hosts:
client = net.get_ssh(host)
center.cluster_backup(host, cluster_id, cluster_backup_dir)
client.close()
# transfer & install
logger.info(message.get('transfer_and_execute_installer'))
for host in m_hosts:
logger.info(' - {}'.format(host))
client = net.get_ssh(host)
cmd = 'mkdir -p {0} && touch {0}/.deploy.state'.format(cluster_path)
net.ssh_execute(client=client, command=cmd)
client.close()
DeployUtil().transfer_installer(host, cluster_id, installer_path)
try:
DeployUtil().install(host, cluster_id, installer_name)
except SSHCommandError as ex:
msg = message.get('error_execute_installer')
msg = msg.format(installer=installer_path)
logger.error(msg)
logger.exception(ex)
return
# restore conf
center.conf_restore(local_ip, cluster_id, conf_backup_dir)
# set deploy state complete
for node in m_hosts:
path_of_fb = config.get_path_of_fb(cluster_id)
cluster_path = path_of_fb['cluster_path']
client = net.get_ssh(node)
cmd = 'rm -rf {}'.format(os.path.join(cluster_path, '.deploy.state'))
net.ssh_execute(client=client, command=cmd)
client.close()
# restart slave
center.stop_current_nodes(master=False, slave=True)
center.configure_redis()
center.sync_conf()
center.start_current_nodes(master=False, slave=True)
center.wait_until_all_redis_process_up()
slaves_for_failover = center.get_slave_nodes()
key = 'cluster-node-timeout'
origin_m_value = center.cli_config_get(key, m_hosts[0], m_ports[0])
origin_s_value = center.cli_config_get(key, s_hosts[0], s_ports[0])
logger.debug('config set: cluster-node-timeout 2000')
RedisCliConfig().set(key, '2000', all=True)
# cluster failover (with no option)
logger.info(message.get('failover_on_deploy'))
logger.debug(slaves_for_failover)
try_count = 0
while try_count < 10:
try_count += 1
success = True
for slave_addr in slaves_for_failover:
host, port = slave_addr.split(':')
stdout = center.run_failover("{}:{}".format(host, port))
logger.debug("failover {}:{} {}".format(host, port, stdout))
if stdout != "ERR You should send CLUSTER FAILOVER to a slave":
# In some cases, the cluster failover is not complete
# even if stdout is OK
# If redis changed to master completely,
# return 'ERR You should send CLUSTER FAILOVER to a slave'
success = False
if success:
break
msg = message.get('retry').format(try_count=try_count)
logger.info(msg)
time.sleep(5)
logger.debug('restore config: cluster-node-timeout')
center.cli_config_set_all(key, origin_m_value, m_hosts, m_ports)
center.cli_config_set_all(key, origin_s_value, s_hosts, s_ports)
if not success:
logger.error(message.get('error_redis_failover'))
return
# restart master (current slave)
center.stop_current_nodes(master=False, slave=True)
center.configure_redis(slave=False)
center.sync_conf()
center.start_current_nodes(master=False, slave=True)
center.wait_until_all_redis_process_up()
def restore(self, cluster_id, tag=None):
"""Restore cluster
:param cluster_id: target cluster id
:param tag: Tag of backup, if omitted, restore the most recent backup file
"""
logger.debug('cluster restore: cluster_id={}, tag={}'.format(
cluster_id,
tag
))
if not cluster_util.validate_id(cluster_id):
raise ClusterIdError(cluster_id)
# find restore folder with tag (local)
path_of_fb = config.get_path_of_fb(cluster_id)
cluster_backup_path = path_of_fb['cluster_backup_path']
if tag is None:
backup_list = os.listdir(cluster_backup_path)
pattern = 'cluster_{}_bak_'.format(cluster_id)
filtered = filter(lambda x: x.startswith(pattern), backup_list)
sorted_list = sorted(list(filtered))
if not sorted_list:
msg = message.get('error_not_found_any_backup')
logger.error('BackupNotExistError: ' + msg)
return
tag = sorted_list[-1]
logger.debug("tag option is empty, auto select: {}".format(tag))
cluster_restore_dir = tag
backup_path = os.path.join(cluster_backup_path, cluster_restore_dir)
if not os.path.isdir(backup_path):
msg = message.get('error_not_found_backup').format(tag=tag)
logger.error('BackupNotExistError: ' + msg)
return
# get hosts from cluster props
props_path = os.path.join(
backup_path,
'tsr2-assembly-1.0.0-SNAPSHOT',
'conf',
'redis.properties'
)
hosts = config.get_props(props_path, 'sr2_redis_master_hosts', [])
# check status of hosts
success = Center().check_hosts_connection(hosts, True)
if not success:
msg = message.get('error_exist_unavailable_host')
logger.error(msg)
return
logger.debug('Connection of all hosts ok.')
success = Center().check_include_localhost(hosts)
if not success:
msg = message.get('error_not_include_localhost')
logger.error(msg)
return
# check all host tag folder: OK / NOT FOUND
msg = message.get('check_backup_info')
logger.info(msg)
buf = []
for host in hosts:
client = net.get_ssh(host)
if not net.is_dir(client, backup_path):
logger.debug('cannot find backup dir: {}-{}'.format(
host,
cluster_restore_dir
))
buf.append([host, color.red('NOT FOUND')])
client.close()
if buf:
utils.print_table([['HOST', 'RESULT'] + buf])
return
logger.info('OK')
# backup cluster
new_tag = time.strftime("%Y%m%d%H%M%S", time.gmtime())
cluster_backup_dir = 'cluster_{}_bak_{}'.format(cluster_id, new_tag)
for host in hosts:
Center().cluster_backup(host, cluster_id, cluster_backup_dir)
# restore cluster
command = "cp -r {} {}/cluster_{}".format(
backup_path,
path_of_fb['base_directory'],
cluster_id
)
for host in hosts:
msg = message.get('restore_cluster')
msg = msg.format(tag=cluster_backup_dir, host=host)
logger.info(msg)
client = net.get_ssh(host)
net.ssh_execute(client, command)
client.close()
logger.info("OK")
def add_slave(self, yes=False):
"""Add slave of cluster
Add slaves to cluster that configured master only.
:param yes: Skip confirm information
"""
logger.debug('add_slave')
if not isinstance(yes, bool):
msg = message.get('error_option_type_not_boolean')
msg = msg.format(option='yes')
logger.error(msg)
return
center = Center()
center.update_ip_port()
# check
s_hosts = center.slave_host_list
s_ports = center.slave_port_list
if not s_hosts:
msg = message.get('error_slave_host_empty')
raise ClusterRedisError(msg)
if not s_ports:
msg = message.get('error_slave_port_empty')
raise ClusterRedisError(msg)
success = center.check_hosts_connection(hosts=s_hosts)
if not success:
return
center.ensure_cluster_exist()
slave_alive_count = center.get_alive_slave_redis_count()
slave_alive_count_mine = center.get_alive_slave_redis_count(
check_owner=True
)
not_mine_count = slave_alive_count - slave_alive_count_mine
if not_mine_count > 0:
msg = message.get('error_cluster_start_slave_collision')
msg = '\n'.join(msg).format(count=not_mine_count)
raise LightningDBError(12, msg)
# confirm info
result = center.confirm_node_port_info(skip=yes)
if not result:
msg = message.get('cancel')
logger.warning(msg)
return
# clean
center.cluster_clean(master=False)
# backup logs
center.backup_server_logs(master=False)
center.create_redis_data_directory(master=False)
# configure
center.configure_redis(master=False)
center.sync_conf()
# start
center.start_redis_process(master=False)
center.wait_until_all_redis_process_up()
# change redis config temporarily
key = 'cluster-node-timeout'
origin_s_value = center.cli_config_get(key, s_hosts[0], s_ports[0])
if not origin_s_value:
msg = "RedisConfigKeyError: '{}'".format(key)
logger.warning(msg)
if origin_s_value:
# cli config set cluster-node-timeout 2000
logger.debug('set cluster node time out 2000 for create')
center.cli_config_set_all(key, '2000', s_hosts, s_ports)
# create
center.replicate()
if origin_s_value:
# cli config restore cluster-node-timeout
logger.debug('restore cluster node time out')
center.cli_config_set_all(key, origin_s_value, s_hosts, s_ports)
def create(self, yes=False):
"""Create cluster
Before create cluster, all redis should be running.
:param yes: skip confirm information
"""
center = Center()
center.update_ip_port()
success = center.check_hosts_connection()
if not success:
return
m_count = len(center.master_host_list) * len(center.master_port_list)
if m_count < 3:
msg = message.get('error_master_redis_less_than_3')
raise ClusterRedisError(msg)
# if need to cluster start
alive_count = center.get_alive_all_redis_count()
my_alive_count = center.get_alive_all_redis_count(check_owner=True)
if alive_count != my_alive_count:
msg = message.get('error_cluster_start_port_collision')
raise ClusterRedisError(msg)
all_count = len(center.all_host_list)
if alive_count < all_count:
logger.debug('cluster start in create')
# init
center.backup_server_logs()
center.create_redis_data_directory()
# cluster configure
center.configure_redis()
center.sync_conf(show_result=True)
# cluster start
center.start_redis_process()
center.wait_until_all_redis_process_up()
key = 'cluster-node-timeout'
m_hosts = center.master_host_list
m_ports = center.master_port_list
origin_m_value = center.cli_config_get(key, m_hosts[0], m_ports[0])
if not origin_m_value:
msg = "RedisConfigKeyError(master): '{}'".format(key)
logger.warning(msg)
s_hosts = center.slave_host_list
s_ports = center.slave_port_list
if s_hosts and s_ports:
origin_s_value = center.cli_config_get(key, s_hosts[0], s_ports[0])
if not origin_s_value:
msg = "RedisConfigKeyError(slave): '{}'".format(key)
logger.warning(msg)
if origin_m_value:
# cli config set cluster-node-timeout 2000
logger.debug('set cluster node time out 2000 for create')
center.cli_config_set_all(key, '2000', m_hosts, m_ports)
if s_hosts and s_ports and origin_s_value:
center.cli_config_set_all(key, '2000', s_hosts, s_ports)
center.create_cluster(yes)
if origin_m_value:
# cli config restore cluster-node-timeout
logger.debug('restore cluster node time out')
center.cli_config_set_all(key, origin_m_value, m_hosts, m_ports)
if s_hosts and s_ports and origin_s_value:
v = origin_s_value
center.cli_config_set_all(key, v, s_hosts, s_ports)
def failover_list(self):
""" Find failovered|no-slave|no-slot masters and failbacked slaves
"""
center = Center()
center.update_ip_port()
logger.debug('failover_list')
master_nodes = center.get_master_obj_list()
slave_nodes = center.get_slave_nodes()
master_ports = center.master_port_list
slave_ports = center.slave_port_list
output_msg = []
failovered_masters = []
for master_node in master_nodes:
addr = master_node['addr']
port = addr.split(':')[1]
try:
value = int(port)
if value in slave_ports:
failovered_masters.append(addr)
except ValueError:
pass
noslave_masters = []
for master_node in master_nodes:
if len(master_node['slaves']) == 0:
noslave_masters.append(master_node['addr'])
else:
for slave_node in master_node['slaves']:
if slave_node['status'] == 'disconnected':
noslave_masters.append(master_node['addr'])
break
noslot_masters = []
ret = RedisCliUtil.command_all_async('cluster nodes', slave=True)
outs = ''
for _, host, port, res, stdout in ret:
if res == 'OK':
outs = '\n'.join([outs, stdout])
lines = outs.splitlines()
filtered_nodes = (filter(lambda x: 'myself,master' in x,
lines))
else:
logger.warning("FAIL {}:{} {}".format(host, port, stdout))
for line in filtered_nodes:
words = line.split()
if len(words) == 8:
noslot_masters.append(line.split()[1])
failbacked_slaves = []
for slave_nodes in slave_nodes:
port = slave_nodes.split(':')[1]
try:
value = int(port)
if value in master_ports:
failbacked_slaves.append(slave_nodes)
except ValueError:
pass
output_msg.append('1) failovered masters:')
output_msg.extend(failovered_masters)
output_msg.append('')
output_msg.append('2) no-slave masters:')
output_msg.extend(noslave_masters)
output_msg.append('')
output_msg.append('3) no-slot masters:')
output_msg.extend(noslot_masters)
output_msg.append('')
output_msg.append('4) failbacked slaves:')
output_msg.extend(failbacked_slaves)
output_msg.append('')
logger.info(color.ENDC + '\n'.join(output_msg))
