def xbstream_restore(xbstream, port):
""" Restore an xtrabackup file
xbstream - An xbstream file in S3
port - The port on which to act on on localhost
"""
datadir = host_utils.get_cnf_setting('datadir', port)
log.info('Shutting down MySQL')
host_utils.stop_mysql(port)
log.info('Removing any existing MySQL data')
mysql_init_server.delete_mysql_data(port)
log.info('Downloading and unpacking backup')
backup.xbstream_unpack(xbstream, datadir)
log.info('Decompressing compressed ibd files')
backup.innobackup_decompress(datadir)
log.info('Applying logs')
backup.apply_log(datadir)
log.info('Removing old innodb redo logs')
mysql_init_server.delete_innodb_log_files(port)
log.info('Setting permissions for MySQL on {dir}'.format(dir=datadir))
host_utils.change_owner(datadir, 'mysql', 'mysql')
def delete_innodb_log_files(port):
""" Purge ib_log files
Args:
port - the port on which to act on localhost
"""
try:
ib_logs_dir = host_utils.get_cnf_setting('innodb_log_group_home_dir',
port)
except ConfigParser.NoOptionError:
ib_logs_dir = host_utils.get_cnf_setting('datadir', port)
glob_path = os.path.join(ib_logs_dir, 'ib_logfile')
final_glob = ''.join((glob_path, '*'))
for del_file in glob.glob(final_glob):
log.info('Clearing {del_file}'.format(del_file=del_file))
os.remove(del_file)
def xbstream_restore(xbstream, port):
""" Restore an xtrabackup file
xbstream - An xbstream file in S3
port - The port on which to act on on localhost
"""
datadir = host_utils.get_cnf_setting('datadir', port)
log.info('Shutting down MySQL')
host_utils.stop_mysql(port)
log.info('Removing any existing MySQL data')
mysql_init_server.delete_mysql_data(port)
log.info('Downloading and unpacking backup')
backup.xbstream_unpack(xbstream, datadir)
log.info('Decompressing compressed ibd files')
backup.innobackup_decompress(datadir)
log.info('Applying logs')
backup.apply_log(datadir)
log.info('Removing old innodb redo logs')
mysql_init_server.delete_innodb_log_files(port)
log.info('Setting permissions for MySQL on {dir}'.format(dir=datadir))
host_utils.change_owner(datadir, 'mysql', 'mysql')
def delete_innodb_log_files(port):
""" Purge ib_log files
Args:
port - the port on which to act on localhost
"""
try:
ib_logs_dir = host_utils.get_cnf_setting('innodb_log_group_home_dir',
port)
except ConfigParser.NoOptionError:
ib_logs_dir = host_utils.get_cnf_setting('datadir',
port)
glob_path = os.path.join(ib_logs_dir, 'ib_logfile')
final_glob = ''.join((glob_path, '*'))
for del_file in glob.glob(final_glob):
log.info('Clearing {del_file}'.format(del_file=del_file))
os.remove(del_file)
def create_and_chown_dirs(port):
""" Create and chown any missing directories needed for mysql """
for variable in DIRS_TO_CREATE:
try:
path = os.path.dirname(host_utils.get_cnf_setting(variable, port))
except ConfigParser.NoOptionError:
# Not defined, so must not matter
return
if not os.path.isdir(path):
log.info('Creating and chowning {path}'.format(path=path))
os.makedirs(path)
host_utils.change_owner(path, 'mysql', 'mysql')
def create_and_chown_dirs(port):
""" Create and chown any missing directories needed for mysql """
for variable in DIRS_TO_CREATE:
try:
path = os.path.dirname(host_utils.get_cnf_setting(variable, port))
except ConfigParser.NoOptionError:
# Not defined, so must not matter
return
if not os.path.isdir(path):
log.info('Creating and chowning {path}'.format(path=path))
os.makedirs(path)
host_utils.change_owner(path, 'mysql', 'mysql')
def archive_mysql_binlogs(port, dry_run):
""" Flush logs and upload all binary logs that don't exist to s3
Arguments:
port - Port of the MySQL instance on which to act
dry_run - Display output but do not uplad
"""
binlog_rotator.rotate_binlogs_if_needed(port, dry_run)
zk = host_utils.MysqlZookeeper()
instance = host_utils.HostAddr(':'.join((host_utils.HOSTNAME,
str(port))))
if zk.get_replica_set_from_instance(instance)[0] is None:
log.info('Instance is not in production, exiting')
return
lock_handle = None
ensure_binlog_archiving_table_sanity(instance)
try:
log.info('Taking binlog archiver lock')
lock_handle = host_utils.take_flock_lock(BINLOG_LOCK_FILE)
log_bin_dir = host_utils.get_cnf_setting('log_bin', port)
bin_logs = mysql_lib.get_master_logs(instance)
logged_uploads = get_logged_binlog_uploads(instance)
for binlog in bin_logs[:-1]:
err_count = 0
local_file = os.path.join(os.path.dirname(log_bin_dir),
binlog['Log_name'])
if already_uploaded(instance, local_file, logged_uploads):
continue
success = False
while not success:
try:
upload_binlog(instance, local_file, dry_run)
success = True
except:
if err_count > MAX_ERRORS:
log.error('Error count in thread > MAX_THREAD_ERROR. '
'Aborting :(')
raise
log.error('error: {e}'.format(e=traceback.format_exc()))
err_count = err_count + 1
time.sleep(err_count*2)
log.info('Archiving complete')
finally:
if lock_handle:
log.info('Releasing lock')
host_utils.release_flock_lock(lock_handle)
def delete_mysql_data(port):
""" Purge all data on disk for a MySQL instance
Args:
port - The port on which to act upon on localhost
"""
for dir_key in DIRS_TO_CLEAR:
directory = host_utils.get_cnf_setting(dir_key, port)
if not os.path.isdir(directory):
directory = os.path.dirname(directory)
log.info('Removing contents of {dir}'.format(dir=directory))
host_utils.clean_directory(directory)
# This should not bomb if one of the files to truncate
# isn't specified in the config file.
for file_keys in FILES_TO_CLEAR:
try:
del_file = host_utils.get_cnf_setting(file_keys, port)
log.info('Truncating {del_file}'.format(del_file=del_file))
open(del_file, 'w').close()
host_utils.change_owner(del_file, 'mysql', 'mysql')
except Exception:
log.warning('Option {f} not specified '
'in my.cnf - continuing.'.format(f=file_keys))
def delete_mysql_data(port):
""" Purge all data on disk for a MySQL instance
Args:
port - The port on which to act upon on localhost
"""
for dir_key in DIRS_TO_CLEAR:
directory = host_utils.get_cnf_setting(dir_key, port)
if not os.path.isdir(directory):
directory = os.path.dirname(directory)
log.info('Removing contents of {dir}'.format(dir=directory))
host_utils.clean_directory(directory)
# This should not bomb if one of the files to truncate
# isn't specified in the config file.
for file_keys in FILES_TO_CLEAR:
try:
del_file = host_utils.get_cnf_setting(file_keys, port)
log.info('Truncating {del_file}'.format(del_file=del_file))
open(del_file, 'w').close()
host_utils.change_owner(del_file, 'mysql', 'mysql')
except Exception:
log.warning('Option {f} not specified '
'in my.cnf - continuing.'.format(f=file_keys))
def rotate_binlogs_if_needed(port, dry_run):
instance = host_utils.HostAddr(':'.join((host_utils.HOSTNAME, str(port))))
log_bin_dir = host_utils.get_cnf_setting('log_bin', port)
binlog = os.path.join(os.path.dirname(log_bin_dir),
mysql_lib.get_master_status(instance)['File'])
# We don't update access time, so this is creation time.
creation = datetime.datetime.fromtimestamp(os.stat(binlog).st_atime)
age = (datetime.datetime.utcnow() - creation).seconds
if age > MAX_AGE:
log.info('Age of current binlog is {age} which is greater than '
'MAX_AGE ({MAX_AGE})'.format(age=age, MAX_AGE=MAX_AGE))
if not dry_run:
log.info('Flushing bin log')
mysql_lib.flush_master_log(instance)
else:
log.info('Age of current binlog is {age} which is less than '
'MAX_AGE ({MAX_AGE})'.format(age=age, MAX_AGE=MAX_AGE))
def init_privileges_tables(port):
""" Bootstap a MySQL instance
Args:
port - the port on which to act upon on localhost
"""
datadir = host_utils.get_cnf_setting('datadir', port)
cmd = ('{MYSQL_INSTALL_DB} --datadir={datadir}'
' --user=mysql'.format(MYSQL_INSTALL_DB=MYSQL_INSTALL_DB,
datadir=datadir))
log.info(cmd)
(std_out, std_err, return_code) = host_utils.shell_exec(cmd)
if return_code:
raise Exception("Return {return_code} != 0 \n"
"std_err:{std_err}\n"
"std_out:{std_out}".format(return_code=return_code,
std_err=std_err,
std_out=std_out))
def init_privileges_tables(port):
""" Bootstap a MySQL instance
Args:
port - the port on which to act upon on localhost
"""
datadir = host_utils.get_cnf_setting('datadir', port)
cmd = ('{MYSQL_INSTALL_DB} --datadir={datadir}'
' --user=mysql'.format(MYSQL_INSTALL_DB=MYSQL_INSTALL_DB,
datadir=datadir))
log.info(cmd)
(std_out, std_err, return_code) = host_utils.shell_exec(cmd)
if return_code:
raise Exception("Return {return_code} != 0 \n"
"std_err:{std_err}\n"
"std_out:{std_out}".format(return_code=return_code,
std_err=std_err,
std_out=std_out))
def rotate_binlogs_if_needed(port, dry_run):
instance = host_utils.HostAddr(':'.join((host_utils.HOSTNAME,
str(port))))
log_bin_dir = host_utils.get_cnf_setting('log_bin', port)
binlog = os.path.join(os.path.dirname(log_bin_dir),
mysql_lib.get_master_status(instance)['File'])
# We don't update access time, so this is creation time.
creation = datetime.datetime.fromtimestamp(os.stat(binlog).st_atime)
age = (datetime.datetime.utcnow() - creation).seconds
if age > MAX_AGE:
log.info('Age of current binlog is {age} which is greater than '
' MAX_AGE ({MAX_AGE})'.format(age=age,
MAX_AGE=MAX_AGE))
if not dry_run:
log.info('Flushing bin log')
mysql_lib.flush_master_log(instance)
else:
log.info('Age of current binlog is {age} which is less than '
' MAX_AGE ({MAX_AGE})'.format(age=age,
MAX_AGE=MAX_AGE))
def get_all_table_sizes(instance):
""" Get size of all innodb tables
NOTE: At this point tables should always be innodb
NOTE2: file per table should always be on.
Args:
instance - A hostAddr object
"""
datadir = host_utils.get_cnf_setting('datadir', instance.port)
ret = dict()
for db in mysql_lib.get_dbs(instance):
ret[db] = dict()
db_dir = os.path.join(datadir, db)
for table_path in glob.glob(''.join([db_dir, '/*', INNODB_EXTENSION])):
(table, partition) = parse_table_file_name(table_path)
if table not in ret[db]:
ret[db][table] = dict()
ret[db][table][partition] = os.stat(table_path).st_size/1024/1024
return ret
def restore_instance(restore_source, destination, no_repl, date, add_to_zk,
skip_production_check):
""" Restore a MySQL backup on to localhost
Args:
restore_source - A hostaddr object for where to pull a backup from
destination - A hostaddr object for where to restore the backup
no_repl - Should replication be not started. It will always be setup.
date - What date should the backup be from
add_to_zk - Should the instnace be added to zk. If so, the log from the
host being launched will be consulted.
skip_production_check - Do not check if the host is already in zk for
production use.
"""
log.info('Supplied source is {source}'.format(source=restore_source))
log.info('Supplied destination is {dest}'.format(dest=destination))
log.info('Desired date of restore {date}'.format(date=date))
# Try to prevent unintentional destruction of prod servers
zk = host_utils.MysqlZookeeper()
try:
(_, replica_type) = zk.get_replica_set_from_instance(destination)
except:
# instance is not in production
replica_type = None
if replica_type == host_utils.REPLICA_ROLE_MASTER:
# If the instance, we will refuse to run. No ifs, ands, or buts/
raise Exception('Restore script must never run on a master')
if replica_type:
if skip_production_check:
log.info('Ignoring production check. We hope you know what you '
'are doing and we will try to take a backup in case '
'you are wrong.')
try:
mysql_backup.mysql_backup(destination)
except Exception as e:
log.error(e)
log.warning('Unable to take a backup. We will give you {time} '
'seconds to change your mind and ^c.'
''.format(time=SCARY_TIMEOUT))
time.sleep(SCARY_TIMEOUT)
else:
raise Exception("It appears {instance} is in use. This is"
" very dangerous!".format(instance=destination))
# Take a lock to prevent multiple restores from running concurrently
log.info('Taking a flock to block another restore from starting')
lock_handle = host_utils.take_flock_lock(backup.BACKUP_LOCK_FILE)
log.info('Rebuilding cnf files just in case')
mysql_cnf_builder.build_cnf()
mysql_init_server.create_and_chown_dirs(destination.port)
# load some data from the mysql conf file
datadir = host_utils.get_cnf_setting('datadir', destination.port)
(restore_source, restore_file,
restore_size) = find_a_backup_to_restore(restore_source, destination,
date)
if restore_source.get_zk_replica_set():
replica_set = restore_source.get_zk_replica_set()[0]
master = zk.get_mysql_instance_from_replica_set(
replica_set, host_utils.REPLICA_ROLE_MASTER)
else:
# ZK has no idea what this replica set is, probably a new replica set.
master = restore_source
# Start logging
row_id = backup.start_restore_log(
master, {
'restore_source': restore_source,
'restore_port': destination.port,
'restore_file': restore_file,
'source_instance': destination.hostname,
'restore_date': date,
'replication': no_repl,
'zookeeper': add_to_zk
})
# Giant try to allow logging if anything goes wrong.
try:
# If we hit an exception, this status will be used. If not, it will
# be overwritten
restore_log_update = {'restore_status': 'BAD'}
log.info('Quick sanity check')
mysql_init_server.basic_host_sanity()
log.info('Shutting down MySQL')
host_utils.stop_mysql(destination.port)
log.info('Removing any existing MySQL data')
mysql_init_server.delete_mysql_data(destination.port)
log.info('Unpacking {rfile} into {ddir}'.format(rfile=restore_file,
ddir=datadir))
backup.xbstream_unpack(restore_file, destination.port, restore_source,
restore_size)
log.info('Decompressing files in {path}'.format(path=datadir))
backup.innobackup_decompress(destination.port)
# Determine how much RAM to use for applying logs based on the
# system's total RAM size; all our boxes have 32G or more, so
# this will always be better than before, but not absurdly high.
log_apply_ram = psutil.phymem_usage()[0] / 1024 / 1024 / 1024 / 3
log.info('Applying logs')
backup.apply_log(destination.port, memory='{}G'.format(log_apply_ram))
log.info('Removing old innodb redo logs')
mysql_init_server.delete_innodb_log_files(destination.port)
log.info('Setting permissions for MySQL on {dir}'.format(dir=datadir))
host_utils.change_owner(datadir, 'mysql', 'mysql')
log.info('Starting MySQL')
host_utils.upgrade_auth_tables(destination.port)
restore_log_update = {'restore_status': 'OK'}
log.info('Running MySQL upgrade')
host_utils.start_mysql(
destination.port,
options=host_utils.DEFAULTS_FILE_EXTRA_ARG.format(
defaults_file=host_utils.MYSQL_NOREPL_CNF_FILE))
if master == backup.get_metadata_from_backup_file(restore_file)[0]:
log.info('Pulling replication info from restore to backup source')
(binlog_file,
binlog_pos) = backup.parse_xtrabackup_binlog_info(datadir)
else:
log.info('Pulling replication info from restore to '
'master of backup source')
(binlog_file,
binlog_pos) = backup.parse_xtrabackup_slave_info(datadir)
log.info('Setting up MySQL replication')
restore_log_update['replication'] = 'FAIL'
# Since we haven't started the slave yet, make sure we've got these
# plugins installed, whether we use them or not.
mysql_lib.setup_semisync_plugins(destination)
# Try to configure replication.
mysql_lib.change_master(destination,
master,
binlog_file,
binlog_pos,
no_start=(no_repl == 'SKIP'))
mysql_lib.wait_replication_catch_up(destination)
host_utils.restart_pt_daemons(destination.port)
restore_log_update['replication'] = 'OK'
mysql_lib.setup_response_time_metrics(destination)
except Exception as e:
log.error(e)
if row_id is not None:
restore_log_update['status_message'] = e
restore_log_update['finished_at'] = True
raise
finally:
if lock_handle:
log.info('Releasing lock')
host_utils.release_flock_lock(lock_handle)
backup.update_restore_log(master, row_id, restore_log_update)
try:
if add_to_zk == 'REQ':
log.info('Adding instance to zk')
modify_mysql_zk.auto_add_instance_to_zk(destination, dry_run=False)
backup.update_restore_log(master, row_id, {'zookeeper': 'OK'})
else:
log.info('add_to_zk is not set, therefore not adding to zk')
except Exception as e:
log.warning("An exception occurred: {e}".format(e=e))
log.warning("If this is a DB issue, that's fine. "
"Otherwise, you should check ZK.")
backup.update_restore_log(master, row_id, {'finished_at': True})
log.info('Starting a new backup')
mysql_backup.mysql_backup(destination)
def restore_instance(restore_source, destination, restore_type,
restore_file, no_repl, date,
add_to_zk, skip_production_check,
test_restore):
""" Restore a MySQL backup on to localhost
Args:
restore_source - A hostaddr object for where to pull a backup from
destination - A hostaddr object for where to restore the backup
restore_type - How to pull the backup, options are 's3', 'remote_server'
and 'local_file'
no_repl - Should replication be not started. It will always be setup.
date - What date should the backup be from
add_to_zk - Should the instnace be added to zk. If so, the log from the
host being launched will be consulted.
skip_production_check - Do not check if the host is already in zk for
production use.
test_restore - Use less ram and shutdown the instance after going
through the motions of a restore.
"""
(temp_dir, target_dir) = backup.get_paths(str(destination.port))
log.info('Supplied source is {source}'.format(source=restore_source))
log.info('Supplied destination is {dest}'.format(dest=destination))
log.info('Restore type is {rest}'.format(rest=restore_type))
log.info('Local restore file is {file}'.format(file=restore_file))
log.info('Desired date of restore {date}'.format(date=date))
if test_restore == 'test':
log.info('Running restore in test mode')
# Try to prevent unintentional destruction of prod servers
zk = host_utils.MysqlZookeeper()
try:
(_, replica_type) = zk.get_replica_set_from_instance(destination)
except:
# instance is not in production
replica_type = None
if replica_type == host_utils.REPLICA_ROLE_MASTER:
# If the instance, we will refuse to run. No ifs, ands, or buts/
raise Exception('Restore script must never run on a master')
if replica_type:
if skip_production_check:
log.info('Ignoring production check. We hope you know what you '
'are doing and we will try to take a backup in case '
'you are wrong.')
try:
mysql_backup.mysql_backup(destination)
except Exception as e:
log.error(e)
log.warning('Unable to take a backup. We will give you {time} '
'seconds to change your mind and ^c.'
''.format(time=SCARY_TIMEOUT))
time.sleep(SCARY_TIMEOUT)
else:
raise Exception("It appears {instance} is in use. This is"
" very dangerous!".format(instance=destination))
# Take a lock to prevent multiple restores from running concurrently
log.info('Taking a flock to block another restore from starting')
lock_handle = host_utils.take_flock_lock(backup.BACKUP_LOCK_FILE)
log.info('Rebuilding cnf files just in case')
mysql_cnf_builder.build_cnf()
mysql_init_server.create_and_chown_dirs(destination.port)
# load some data from the mysql conf file
datadir = host_utils.get_cnf_setting('datadir', destination.port)
# Where will we look for a backup?
if restore_type != 'local_file':
(restore_type, restore_source,
restore_file, restore_size) = find_a_backup_to_restore(restore_type, restore_source,
destination, date)
# Not using an if/else because find_a_backup_to_restore could set to
# local_file if the file has already been downloaded.
if restore_type == 'local_file':
restore_source = backup.get_host_from_backup(restore_file)
# restore_size will be computed in the unpack function
restore_size = None
log.info('Detected the source of backup as {src}'.format(src=restore_source))
if restore_source.get_zk_replica_set():
replica_set = restore_source.get_zk_replica_set()[0]
master = zk.get_mysql_instance_from_replica_set(replica_set, host_utils.REPLICA_ROLE_MASTER)
else:
# ZK has no idea what this replica set is, probably a new replica set.
master = restore_source
# Start logging
row_id = backup.start_restore_log(master, {'restore_type': restore_type,
'test_restore': test_restore,
'restore_source': restore_source,
'restore_port': destination.port,
'restore_file': restore_file,
'source_instance': destination.hostname,
'restore_date': date,
'replication': no_repl,
'zookeeper': add_to_zk})
# Giant try to allow logging if anything goes wrong.
try:
# If we hit an exception, this status will be used. If not, it will
# be overwritten
restore_log_update = {'restore_status': 'BAD'}
log.info('Quick sanity check')
mysql_init_server.basic_host_sanity()
log.info('Shutting down MySQL')
host_utils.stop_mysql(destination.port)
log.info('Removing any existing MySQL data')
mysql_init_server.delete_mysql_data(destination.port)
log.info('Unpacking {rfile} into {ddir}'.format(rfile=restore_file,
ddir=datadir))
backup.xbstream_unpack(restore_file, destination.port,
restore_source, restore_type, restore_size)
log.info('Decompressing files in {path}'.format(path=datadir))
backup.innobackup_decompress(destination.port)
log.info('Applying logs')
if test_restore == 'test':
# We don't really need a lot of memory if we're just
# verifying that it works.
backup.apply_log(destination.port, memory='1G')
else:
backup.apply_log(destination.port, memory='10G')
log.info('Removing old innodb redo logs')
mysql_init_server.delete_innodb_log_files(destination.port)
log.info('Setting permissions for MySQL on {dir}'.format(dir=datadir))
host_utils.change_owner(datadir, 'mysql', 'mysql')
log.info('Starting MySQL')
host_utils.upgrade_auth_tables(destination.port)
restore_log_update = {'restore_status': 'OK'}
log.info('Running MySQL upgrade')
host_utils.start_mysql(destination.port,
options=host_utils.DEFAULTS_FILE_EXTRA_ARG.format(defaults_file=host_utils.MYSQL_NOREPL_CNF_FILE))
if master == backup.get_host_from_backup(restore_file):
log.info('Pulling replication info from restore to backup source')
(binlog_file, binlog_pos) = backup.parse_xtrabackup_binlog_info(datadir)
else:
log.info('Pulling replication info from restore to '
'master of backup source')
(binlog_file, binlog_pos) = backup.parse_xtrabackup_slave_info(datadir)
log.info('Setting up MySQL replication')
restore_log_update['replication'] = 'FAIL'
# Since we haven't started the slave yet, make sure we've got these
# plugins installed, whether we use them or not.
mysql_lib.setup_semisync_plugins(destination)
# Try to configure replication. If this was just a test restore,
# don't wait for it to catch up - don't even start the slave.
if test_restore == 'test':
mysql_lib.change_master(destination,
master,
binlog_file,
binlog_pos,
no_start=True)
backup.quick_test_replication(destination)
else:
mysql_lib.change_master(destination,
master,
binlog_file,
binlog_pos,
no_start=(no_repl == 'SKIP'))
mysql_lib.wait_replication_catch_up(destination)
host_utils.restart_pt_daemons(destination.port)
restore_log_update['replication'] = 'OK'
mysql_lib.setup_response_time_metrics(destination)
except Exception as e:
log.error(e)
if row_id is not None:
restore_log_update['status_message'] = e
restore_log_update['finished_at'] = True
raise
finally:
if lock_handle:
log.info('Releasing lock')
host_utils.release_flock_lock(lock_handle)
backup.update_restore_log(master, row_id, restore_log_update)
# If this was a test restore, we don't need to keep the 3307
# instance running, so let's shut it off.
if test_restore == 'test':
log.info('Shutting down MySQL backup/restore test instance')
host_utils.stop_mysql(destination.port)
backup.update_restore_log(master, row_id, {'finished_at': True})
return
try:
if add_to_zk == 'REQ':
log.info('Adding instance to zk')
modify_mysql_zk.auto_add_instance_to_zk(destination, dry_run=False)
backup.update_restore_log(master, row_id, {'zookeeper': 'OK'})
else:
log.info('add_to_zk is not set, therefore not adding to zk')
except Exception as e:
log.warning("An exception occurred: {e}".format(e=e))
log.warning("If this is a DB issue, that's fine. "
"Otherwise, you should check ZK.")
backup.update_restore_log(master, row_id, {'finished_at': True})
log.info('Starting a new backup')
mysql_backup.mysql_backup(destination)
def archive_mysql_binlogs(port, dry_run):
""" Flush logs and upload all binary logs that don't exist to s3
Arguments:
port - Port of the MySQL instance on which to act
dry_run - Display output but do not uplad
"""
lock_handle = None
try:
log.info('Taking binlog archiver lock')
lock_handle = host_utils.take_flock_lock(BINLOG_LOCK_FILE)
log_bin_dir = host_utils.get_cnf_setting('log_bin', port)
instance = host_utils.HostAddr(':'.join(
(host_utils.HOSTNAME, str(port))))
s3_conn = boto.connect_s3()
bucket = s3_conn.get_bucket(environment_specific.S3_BUCKET,
validate=False)
mysql_conn = mysql_lib.connect_mysql(instance)
bin_logs = mysql_lib.get_master_logs(mysql_conn)
prefix = os.path.join(BINLOG_S3_DIR, instance.hostname,
str(instance.port))
uploaded_binlogs = bucket.get_all_keys(prefix=prefix)
for binlog in bin_logs[:-1]:
compressed_file = ''.join((binlog['Log_name'], '.gz'))
local_file = os.path.join(os.path.dirname(log_bin_dir),
binlog['Log_name'])
local_file_gz = os.path.join(TMP_DIR, compressed_file)
remote_path = os.path.join(BINLOG_S3_DIR, instance.hostname,
str(instance.port), compressed_file)
log.info(
'Local file {local_file} will compress to {local_file_gz} '
'and upload to {remote_path}'.format(
local_file=local_file,
local_file_gz=local_file_gz,
remote_path=remote_path))
new_key = boto.s3.key.Key(bucket)
new_key.key = remote_path
if already_uploaded(remote_path, uploaded_binlogs):
log.info('Binlog has already been uploaded')
continue
if dry_run:
log.info('In dry_run mode, skipping compression and upload')
continue
log.info('Compressing file')
f_in = open(local_file, 'r')
f_out = gzip.open(local_file_gz, 'w', compresslevel=2)
f_out.writelines(f_in)
f_out.close()
f_in.close()
log.info('Uploading file')
new_key.set_contents_from_filename(local_file_gz)
log.info('Deleting local compressed file')
os.remove(local_file_gz)
log.info('Archiving complete')
finally:
if lock_handle:
log.info('Releasing lock')
host_utils.release_flock_lock(lock_handle)
def archive_mysql_binlogs(port, dry_run):
""" Flush logs and upload all binary logs that don't exist to s3
Arguments:
port - Port of the MySQL instance on which to act
dry_run - Display output but do not uplad
"""
lock_handle = None
try:
log.info('Taking binlog archiver lock')
lock_handle = host_utils.take_flock_lock(BINLOG_LOCK_FILE)
log_bin_dir = host_utils.get_cnf_setting('log_bin', port)
instance = host_utils.HostAddr(':'.join((host_utils.HOSTNAME,
str(port))))
s3_conn = boto.connect_s3()
bucket = s3_conn.get_bucket(environment_specific.S3_BUCKET, validate=False)
mysql_conn = mysql_lib.connect_mysql(instance)
bin_logs = mysql_lib.get_master_logs(mysql_conn)
prefix = os.path.join(BINLOG_S3_DIR,
instance.hostname,
str(instance.port))
uploaded_binlogs = bucket.get_all_keys(prefix=prefix)
for binlog in bin_logs[:-1]:
compressed_file = ''.join((binlog['Log_name'], '.gz'))
local_file = os.path.join(os.path.dirname(log_bin_dir),
binlog['Log_name'])
local_file_gz = os.path.join(TMP_DIR, compressed_file)
remote_path = os.path.join(BINLOG_S3_DIR,
instance.hostname,
str(instance.port),
compressed_file)
log.info('Local file {local_file} will compress to {local_file_gz} '
'and upload to {remote_path}'.format(local_file=local_file,
local_file_gz=local_file_gz,
remote_path=remote_path))
new_key = boto.s3.key.Key(bucket)
new_key.key = remote_path
if already_uploaded(remote_path, uploaded_binlogs):
log.info('Binlog has already been uploaded')
continue
if dry_run:
log.info('In dry_run mode, skipping compression and upload')
continue
log.info('Compressing file')
f_in = open(local_file, 'r')
f_out = gzip.open(local_file_gz, 'w', compresslevel=2)
f_out.writelines(f_in)
f_out.close()
f_in.close()
log.info('Uploading file')
new_key.set_contents_from_filename(local_file_gz)
log.info('Deleting local compressed file')
os.remove(local_file_gz)
log.info('Archiving complete')
finally:
if lock_handle:
log.info('Releasing lock')
host_utils.release_flock_lock(lock_handle)