def __init__(self):
self.stdby = StandbyVerify()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.pgutil = GpUtility()
self.host = socket.gethostname()
def __init__(self, methodName):
self.gpact = GpactivateStandby()
self.gpinit = GpinitStandby()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname=self.dbname)
self.bkup_timestamp = ""
self.gphome = os.environ.get('GPHOME')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.pgport = os.environ.get('PGPORT')
self.host = socket.gethostname()
self.standby_loc = os.path.split(self.mdd)[0] + self.standby_dirname
super(BkupRestore, self).__init__(methodName)
def __init__(self):
self.gpinit = GpinitStandby()
self.pgutil = GpUtility()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.gphome = os.environ.get('GPHOME')
self.pgport = os.environ.get('PGPORT')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.host = socket.gethostname()
dburl = dbconn.DbURL()
gparray = GpArray.initFromCatalog(dburl, utility=True)
self.numcontent = gparray.getNumSegmentContents()
self.orig_master = gparray.master
def __init__(self):
self.stdby = StandbyVerify()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.pgutil = GpUtility()
self.host = socket.gethostname()
def __init__(self,methodName):
self.gpact = GpactivateStandby()
self.gpinit = GpinitStandby()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname=self.dbname)
self.bkup_timestamp = ""
self.gphome = os.environ.get('GPHOME')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.pgport = os.environ.get('PGPORT')
self.host = socket.gethostname()
self.standby_loc = os.path.split(self.mdd)[0]+self.standby_dirname
super(BkupRestore,self).__init__(methodName)
def __init__(self):
self.gpinit = GpinitStandby()
self.pgutil = GpUtility()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.gphome = os.environ.get('GPHOME')
self.pgport = os.environ.get('PGPORT')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.host = socket.gethostname()
dburl = dbconn.DbURL()
gparray = GpArray.initFromCatalog(dburl, utility=True)
self.numcontent = gparray.getNumSegmentContents()
self.orig_master = gparray.master
def __init__(self):
self.stdby = StandbyRunMixin()
class StandbyVerify(object):
'''Class for standby verification
Disclaimer: Some of these may repeat with the mpp/lib version'''
def __init__(self):
self.stdby = StandbyRunMixin()
def _run_remote_command(self, host, command):
rmt_cmd = "gpssh -h %s -e '%s' " % (host, command)
cmd = Command(name='Running a remote command', cmdStr = rmt_cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
tinctest.logger.info('%s\n%s' %(rmt_cmd, result.stdout))
return result.stdout
def get_pg_stat_replication(self):
'''Returns the pg_stat_replication result as a list'''
if self.stdby.wait_for_walsender() == 0:
raise WalReplException('Standby Replication has not started')
with DbConn(utility=True, dbname='template1') as conn:
return conn.execute("""
SELECT
procpid,
usesysid,
usename,
application_name,
client_addr,
client_port,
backend_start,
state,
sent_location,
write_location,
flush_location,
replay_location,
sync_priority,
sync_state
FROM
pg_stat_replication
""")
def check_gp_segment_config(self):
''' Check for the new entry in gp_segment_configuration'''
sm_count = PSQL.run_sql_command("select count(*) from gp_segment_configuration where content='-1' and role='m';", flags='-q -t', dbname='postgres')
if int(sm_count.strip()) != 1:
return False
tinctest.logger.info('A new entry is added for standby in gp_segment_configuration')
return True
def check_pg_stat_replication(self):
'''Check the state and sync_state from pg_stat_replication '''
for i in walrepl.polling(max_try=20, interval=0.5):
res = self.get_pg_stat_replication()
if len(res) == 0:
continue
elif res[0].state == 'streaming' and res[0].sync_state == 'sync':
tinctest.logger.info('pg_stat_replication is updated with the information')
return True
else:
continue
return False
def check_standby_processes(self):
'''Check if all the standby processes are present '''
# Get hostname and data directory of standby, if any.
# We could use gparray, but for now let's stay away from gppylib
with DbConn(dbname='postgres') as conn:
results = conn.execute("""
SELECT hostname, fselocation
FROM gp_segment_configuration
INNER JOIN pg_filespace_entry ON dbid = fsedbid
WHERE fsefsoid = 3052 AND content = -1 AND role = 'm'
""")
# If standby is not configured, there must not be any standby processes.
if len(results) == 0:
return False
host = results[0].hostname
datadir = results[0].fselocation
# We look for these processes that are spawned from standby postmaster.
# They should have postmaster pid as ppid. We minimize remote operation
# cost by getting ps output once, and search for these strings from the
# output lines using regexp.
process_list = ['master logger process', 'startup process', 'wal receiver process']
target_process = '(' + '|'.join(process_list) + ')'
postmaster_pid = walrepl.get_postmaster_pid(datadir, host)
# If postmaster does not exit, child processes are not present.
if postmaster_pid == -1:
return False
# Make it string for the later comparison
postmaster_pid = str(postmaster_pid)
cmd = SmartCmd('ps -e -o ppid,command | grep [p]ostgres', host=host)
cmd.run()
standby_processes = []
for line in cmd.get_results().stdout.splitlines(True):
line = line.strip()
(ppid, command) = re.split(r'\s+', line, 1)
if ppid == postmaster_pid and re.search(target_process, command):
standby_processes.append(line)
# If we found more or less than expected, we don't know.
if len(standby_processes) != len(process_list):
return False
tinctest.logger.info('All the standby processes are present at standby host''')
return True
def __init__(self):
self.stdby = StandbyRunMixin()
class StandbyVerify(object):
'''Class for standby verification
Disclaimer: Some of these may repeat with the mpp/lib version'''
def __init__(self):
self.stdby = StandbyRunMixin()
def _run_remote_command(self, host, command):
rmt_cmd = "gpssh -h %s -e '%s' " % (host, command)
cmd = Command(name='Running a remote command', cmdStr=rmt_cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
tinctest.logger.info('%s\n%s' % (rmt_cmd, result.stdout))
return result.stdout
def get_pg_stat_replication(self):
'''Returns the pg_stat_replication result as a list'''
if self.stdby.wait_for_walsender() == 0:
raise WalReplException('Standby Replication has not started')
with DbConn(utility=True, dbname='template1') as conn:
return conn.execute("""
SELECT
procpid,
usesysid,
usename,
application_name,
client_addr,
client_port,
backend_start,
state,
sent_location,
write_location,
flush_location,
replay_location,
sync_priority,
sync_state
FROM
pg_stat_replication
""")
def check_gp_segment_config(self):
''' Check for the new entry in gp_segment_configuration'''
sm_count = PSQL.run_sql_command(
"select count(*) from gp_segment_configuration where content='-1' and role='m';",
flags='-q -t',
dbname='postgres')
if int(sm_count.strip()) != 1:
return False
tinctest.logger.info(
'A new entry is added for standby in gp_segment_configuration')
return True
def check_pg_stat_replication(self):
'''Check the state and sync_state from pg_stat_replication '''
for i in walrepl.polling(max_try=20, interval=0.5):
res = self.get_pg_stat_replication()
if len(res) == 0:
continue
elif res[0].state == 'streaming' and res[0].sync_state == 'sync':
tinctest.logger.info(
'pg_stat_replication is updated with the information')
return True
else:
continue
return False
def check_standby_processes(self):
'''Check if all the standby processes are present '''
# Get hostname and data directory of standby, if any.
# We could use gparray, but for now let's stay away from gppylib
with DbConn(dbname='postgres') as conn:
results = conn.execute("""
SELECT hostname, datadir
FROM gp_segment_configuration
WHERE content = -1 AND role = 'm'
""")
# If standby is not configured, there must not be any standby processes.
if len(results) == 0:
return False
host = results[0].hostname
datadir = results[0].datadir
# We look for these processes that are spawned from standby postmaster.
# They should have postmaster pid as ppid. We minimize remote operation
# cost by getting ps output once, and search for these strings from the
# output lines using regexp.
process_list = [
'master logger process', 'startup process', 'wal receiver process'
]
target_process = '(' + '|'.join(process_list) + ')'
postmaster_pid = walrepl.get_postmaster_pid(datadir, host)
# If postmaster does not exit, child processes are not present.
if postmaster_pid == -1:
return False
# Make it string for the later comparison
postmaster_pid = str(postmaster_pid)
cmd = SmartCmd('ps -e -o ppid,command | grep [p]ostgres', host=host)
cmd.run()
standby_processes = []
for line in cmd.get_results().stdout.splitlines(True):
line = line.strip()
(ppid, command) = re.split(r'\s+', line, 1)
if ppid == postmaster_pid and re.search(target_process, command):
standby_processes.append(line)
# If we found more or less than expected, we don't know.
if len(standby_processes) != len(process_list):
return False
tinctest.logger.info(
'All the standby processes are present at standby host'
'')
return True
class GpactivateStandby(object):
'''Class for gpactivatestandby operations '''
standby_port = '5656'
db_name = 'walrepl'
def __init__(self):
self.gpinit = GpinitStandby()
self.pgutil = GpUtility()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.gphome = os.environ.get('GPHOME')
self.pgport = os.environ.get('PGPORT')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.host = socket.gethostname()
dburl = dbconn.DbURL()
gparray = GpArray.initFromCatalog(dburl, utility=True)
self.numcontent = gparray.getNumSegmentContents()
self.orig_master = gparray.master
def run_remote(self, standbyhost, rmt_cmd, pgport='', standbydd=''):
'''Runs remote command and returns rc, result '''
export_cmd = "source %s/greenplum_path.sh;export PGPORT=%s;export MASTER_DATA_DIRECTORY=%s" % (
self.gphome, pgport, standbydd)
remote_cmd = "gpssh -h %s -e '%s; %s'" % (standbyhost, export_cmd,
rmt_cmd)
cmd = Command(name='Running Remote command', cmdStr='%s' % remote_cmd)
tinctest.logger.info(" %s" % cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
return result.rc, result.stdout
def activate(self, option=''):
''' Stop the master and activate current standby to master'''
standby_host = self.get_current_standby()
standby_port = self.get_standby_port()
standby_loc = self.get_standby_dd()
self.run_remote(self.host,
'gpstop -aim',
pgport=self.pgport,
standbydd=self.mdd)
gpactivate_cmd = 'gpactivatestandby -a -d %s %s' % (standby_loc,
option)
(rc, result) = self.run_remote(standby_host,
gpactivate_cmd,
pgport=standby_port,
standbydd=standby_loc)
tinctest.logger.info(
'Result without force option to activate standby %s' % result)
if (rc != 0) and result.find('Force activation required') != -1:
tinctest.logger.info(
'activating standby failed, try force activation...')
gpactivate_cmd = 'gpactivatestandby -a -f -d %s %s' % (standby_loc,
option)
(rc, result) = self.run_remote(standby_host,
gpactivate_cmd,
pgport=standby_port,
standbydd=standby_loc)
if (rc != 0):
tinctest.logger.error('Force activating standby failed!')
return False
tinctest.logger.info('standby acvitated, host value %s' % standby_host)
return True
def remove_standby(self):
return self.gpinit.run(option='-r')
def failback_to_original_master(self):
# Check if master is running.
bashCmd = (
self.gphome
) + '/bin/pg_ctl status -D $MASTER_DATA_DIRECTORY | grep \'pg_ctl: server is running\''
cmd = Command(name='Running cmd %s' % bashCmd,
cmdStr="source %s/greenplum_path.sh; %s" %
(self.gphome, bashCmd))
try:
cmd.run()
except Exception, e:
tinctest.logger.error("Error running command %s\n" % e)
return
result = cmd.get_results()
out = result.stdout
if not out:
tinctest.logger.info('Start the old master again ...')
master = gp.MasterStart("Starting orig Master",
self.orig_master.datadir,
self.orig_master.port,
self.orig_master.dbid, 0, self.numcontent,
None, None, None)
master.run(validateAfter=True)
result = master.get_results()
tinctest.logger.info('orig Master started result : %s' %
result.stdout)
if result.rc != 0:
raise WalReplException(
'Unable to start original master process')
Command('gpinitstandby -ra', 'gpinitstandby -ra').run()
# failing back to old master, it takes a little bit to prepare the cluster ready for connection
if os.path.exists(local_path('drop_filespace.sql')):
PSQL.run_sql_file(local_path('drop_filespace.sql'),
dbname=self.db_name)
class GpinitStandby(object):
'''Class for gpinitstandby operations
Disclaimer: Some of these may repeat with the mpp/lib version'''
def __init__(self):
self.stdby = StandbyVerify()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.pgutil = GpUtility()
self.host = socket.gethostname()
def run(self, option=''):
'''Runs gpinitstandby and returns True if successfull '''
gpinitstandby_cmd = 'gpinitstandby -a %s' % option
cmd = Command(name='Running Gpinitstandby',
cmdStr="%s" % gpinitstandby_cmd)
tinctest.logger.info(" %s" % cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
if result.rc != 0:
return False
return True
def verify_gpinitstandby(self, primary_pid):
'''Verify the presence of standby in recovery mode '''
if (self.stdby.check_gp_segment_config()) and (
self.stdby.check_pg_stat_replication()) and (
self.stdby.check_standby_processes()
) and self.compare_primary_pid(primary_pid):
return True
return False
def get_masterhost(self):
std_sql = "select hostname from gp_segment_configuration where content=-1 and role='p';"
master_host = PSQL.run_sql_command(std_sql,
flags='-q -t',
dbname='postgres')
return master_host.strip()
def get_standbyhost(self):
std_sql = "select hostname from gp_segment_configuration where content='-1' and role='m';"
standby_host = PSQL.run_sql_command(std_sql,
flags='-q -t',
dbname='postgres')
return standby_host.strip()
def get_filespace_location(self):
fs_sql = "select fselocation from pg_filespace_entry where fselocation like '%fs_walrepl_a%' and fsedbid=1;"
filespace_loc = PSQL.run_sql_command(fs_sql,
flags='-q -t',
dbname='postgres')
return filespace_loc.strip()
def get_standbyhostnode(self):
'''
Function used to obtain the hostname of one of the segment node inorder to use it as the standby master node"
@return : returns the hostname of the segment node which can be used as the standby master node
'''
hostlist = self.config.get_hosts()
standby = ''
for host in hostlist:
if host.strip() != self.host:
standby = host.strip()
if len(standby) > 0:
return standby
else:
tinctest.logger.error(
'No segment host other than master available to have remote standby'
)
def get_primary_pid(self):
pid = self.pgutil.get_pid_by_keyword(pgport=os.environ.get('PGPORT'),
keyword=self.mdd)
if int(pid) == -1:
raise WalReplException(
'Unable to get pid of primary master process')
else:
return int(pid)
def compare_primary_pid(self, initial_pid):
final_pid = self.get_primary_pid()
if initial_pid == final_pid:
return True
return False
def create_dir_on_standby(self, standby, location):
fs_cmd = "gpssh -h %s -e 'rm -rf %s; mkdir -p %s' " % (
standby, location, location)
cmd = Command(
name='Make dierctory on standby before running the command',
cmdStr=fs_cmd)
tinctest.logger.info('%s' % cmd)
cmd.run(validateAfter=True)
result = cmd.get_results()
if result.rc != 0:
raise WalReplException('Unable to create directory on standby')
else:
return True
def initstand_by_with_default(self):
master_host = self.get_masterhost()
gp_cmd = "/bin/bash -c 'gpinitstandby -s %s'" % (master_host)
cmd = Command(name='Running the command', cmdStr=gp_cmd)
tinctest.logger.info('%s' % cmd)
cmd.run(validateAfter=False)
sleep(2)
result = cmd.get_results()
lines = result.stdout.splitlines()
for line in lines:
if 'Data directory already exists' in line:
return True
return False
def init_with_prompt(self, filespace_loc):
standby = self.get_standbyhostnode()
gp_cmd = "/bin/bash -c 'gpinitstandby -s %s -a'" % (standby)
logfile = open(local_path('install2.log'), 'w')
child = pexpect.spawn(gp_cmd, timeout=400)
child.logfile = logfile
sleep(5)
check = child.expect(
['.* Enter standby filespace location for filespace.*', ' '])
child.sendline(filespace_loc)
sleep(10)
check = child.expect(['.*Successfully created standby master.*'])
if check != 0:
tinctest.logger.error('gpinitstandy failed')
return False
child.close()
return True
class BkupRestore(MPPTestCase):
dbname = 'bkdb'
standby_port = '5433'
standby_dirname = '_newstandby'
def __init__(self, methodName):
self.gpact = GpactivateStandby()
self.gpinit = GpinitStandby()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname=self.dbname)
self.bkup_timestamp = ""
self.gphome = os.environ.get('GPHOME')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.pgport = os.environ.get('PGPORT')
self.host = socket.gethostname()
self.standby_loc = os.path.split(self.mdd)[0] + self.standby_dirname
super(BkupRestore, self).__init__(methodName)
def createdb(self):
PSQL.run_sql_command('Drop database %s;Create database %s;' %
(self.dbname, self.dbname),
dbname='postgres')
def run_backup(self):
#Cleanup db_dumps folder before running backup
cleanup_cmd = "gpssh -h %s -e 'rm -rf /tmp/db_dumps'" % (self.host)
cmd = Command('cleanup', cleanup_cmd)
cmd.run(validateAfter=False)
gpc_cmd = 'gpcrondump -a -x %s -u /tmp' % self.dbname
cmd = Command(name='Run gpcrondump', cmdStr=gpc_cmd)
cmd.run(validateAfter=True)
result = cmd.get_results()
if result.rc != 0:
return False
else:
self.bkup_timestamp = self.get_timestamp(result.stdout)
return True
def validate_timestamp(self, ts):
try:
int_ts = int(ts)
except Exception as e:
raise Exception('Timestamp is not valid %s' % ts)
if len(ts) != 14:
raise Exception('Timestamp is invalid %s' % ts)
def get_timestamp(self, result):
for line in result.splitlines():
if 'Timestamp key = ' in line:
log_msg, delim, timestamp = line.partition('=')
ts = timestamp.strip()
self.validate_timestamp(ts)
return ts
raise Exception('Timestamp key not found')
def run_restore(self):
gpr_cmd = 'gpdbrestore -t %s -a -u /tmp' % self.bkup_timestamp
(rc, result) = self.run_remote(self.host,
gpr_cmd,
pgport=self.standby_port,
standbydd=self.standby_loc)
if rc != 0:
return False
return True
def create_standby(self, local=True):
''' Create a standby '''
gputil.create_dir(self.host, self.standby_loc)
gputil.clean_dir(self.host, self.standby_loc)
self.gpinit.run(option='-P %s -s %s -F pg_system:%s' %
(self.standby_port, self.host, self.standby_loc))
def run_remote(self, standbyhost, rmt_cmd, pgport='', standbydd=''):
'''Runs remote command and returns rc, result '''
export_cmd = "source %s/greenplum_path.sh;export PGPORT=%s;export MASTER_DATA_DIRECTORY=%s" % (
self.gphome, pgport, standbydd)
remote_cmd = "gpssh -h %s -e '%s;%s' " % (standbyhost, export_cmd,
rmt_cmd)
cmd = Command(name='Running Remote command', cmdStr='%s' % remote_cmd)
tinctest.logger.info(" %s" % cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
return result.rc, result.stdout
def run_workload(self, dir, verify=False):
tinctest.logger.info("Running workload ...")
load_path = local_path(dir) + os.sep
for file in os.listdir(load_path):
if file.endswith(".sql"):
out_file = file.replace(".sql", ".out")
PSQL.run_sql_file(sql_file=load_path + file,
dbname=self.dbname,
port=self.pgport,
out_file=load_path + out_file)
if verify == True:
self.validate_sql_files(load_path)
def validate_sql_files(self, load_path):
for file in os.listdir(load_path):
if file.endswith(".out"):
out_file = file
ans_file = file.replace('.out', '.ans')
if os.path.exists(load_path + ans_file):
assert Gpdiff.are_files_equal(load_path + out_file,
load_path + ans_file)
else:
raise Exception("No .ans file exists for %s " % out_file)
def failback(self):
gputil.failback_to_original_master(self.mdd, self.host,
self.standby_loc, self.standby_port)
class GpactivateStandby(object):
'''Class for gpactivatestandby operations '''
standby_port = '5656'
db_name = 'walrepl'
def __init__(self):
self.gpinit = GpinitStandby()
self.pgutil = GpUtility()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.gphome = os.environ.get('GPHOME')
self.pgport = os.environ.get('PGPORT')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.host = socket.gethostname()
dburl = dbconn.DbURL()
gparray = GpArray.initFromCatalog(dburl, utility=True)
self.numcontent = gparray.getNumSegmentContents()
self.orig_master = gparray.master
def run_remote(self, standbyhost, rmt_cmd, pgport = '', standbydd = ''):
'''Runs remote command and returns rc, result '''
export_cmd = "source %s/greenplum_path.sh;export PGPORT=%s;export MASTER_DATA_DIRECTORY=%s" % (self.gphome, pgport, standbydd)
remote_cmd = "gpssh -h %s -e '%s; %s'" % (standbyhost, export_cmd, rmt_cmd)
cmd = Command(name='Running Remote command', cmdStr='%s' % remote_cmd)
tinctest.logger.info(" %s" % cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
return result.rc,result.stdout
def activate(self, option=''):
''' Stop the master and activate current standby to master'''
standby_host = self.get_current_standby()
standby_port = self.get_standby_port()
standby_loc = self.get_standby_dd()
self.run_remote(self.host, 'gpstop -aim', pgport=self.pgport, standbydd=self.mdd)
gpactivate_cmd = 'gpactivatestandby -a -d %s %s' %(standby_loc, option)
(rc, result) = self.run_remote(standby_host, gpactivate_cmd, pgport = standby_port, standbydd=standby_loc)
tinctest.logger.info('Result without force option to activate standby %s'%result)
if (rc != 0) and result.find('Force activation required') != -1:
tinctest.logger.info('activating standby failed, try force activation...')
gpactivate_cmd = 'gpactivatestandby -a -f -d %s %s' %(standby_loc, option)
(rc, result) = self.run_remote(standby_host, gpactivate_cmd, pgport = standby_port, standbydd=standby_loc)
if (rc != 0):
tinctest.logger.error('Force activating standby failed!')
return False
tinctest.logger.info('standby acvitated, host value %s' % standby_host)
return True
def remove_standby(self):
return self.gpinit.run(option='-r')
def failback_to_original_master(self):
# Check if master is running.
bashCmd = (self.gphome)+'/bin/pg_ctl status -D $MASTER_DATA_DIRECTORY | grep \'pg_ctl: server is running\''
cmd = Command(name='Running cmd %s'%bashCmd, cmdStr="source %s/greenplum_path.sh; %s" % (self.gphome,bashCmd))
try:
cmd.run()
except Exception, e:
tinctest.logger.error("Error running command %s\n" % e)
return
result = cmd.get_results()
out = result.stdout
if not out:
tinctest.logger.info('Start the old master again ...')
master = gp.MasterStart("Starting orig Master", self.orig_master.datadir, self.orig_master.port, self.orig_master.dbid, 0, self.numcontent, None, None, None)
master.run(validateAfter=True)
result = master.get_results()
tinctest.logger.info ('orig Master started result : %s' % result.stdout)
if result.rc != 0:
raise WalReplException('Unable to start original master process')
Command('gpinitstandby -ra', 'gpinitstandby -ra').run()
# failing back to old master, it takes a little bit to prepare the cluster ready for connection
if os.path.exists(local_path('drop_filespace.sql')):
PSQL.run_sql_file(local_path('drop_filespace.sql'), dbname=self.db_name)
class GpinitStandby(object):
'''Class for gpinitstandby operations
Disclaimer: Some of these may repeat with the mpp/lib version'''
def __init__(self):
self.stdby = StandbyVerify()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname='walrepl')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.config = GPDBConfig()
self.pgutil = GpUtility()
self.host = socket.gethostname()
def run(self, option = ''):
'''Runs gpinitstandby and returns True if successfull '''
gpinitstandby_cmd = 'gpinitstandby -a %s' % option
cmd = Command(name='Running Gpinitstandby', cmdStr="%s" % gpinitstandby_cmd)
tinctest.logger.info(" %s" % cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
if result.rc != 0:
return False
return True
def verify_gpinitstandby(self, primary_pid):
'''Verify the presence of standby in recovery mode '''
if (self.stdby.check_gp_segment_config()) and (self.stdby.check_pg_stat_replication()) and (self.stdby.check_standby_processes())and self.compare_primary_pid(primary_pid) :
return True
return False
def get_masterhost(self):
std_sql = "select hostname from gp_segment_configuration where content=-1 and role='p';"
master_host = PSQL.run_sql_command(std_sql, flags = '-q -t', dbname= 'postgres')
return master_host.strip()
def get_standbyhost(self):
std_sql = "select hostname from gp_segment_configuration where content='-1' and role='m';"
standby_host = PSQL.run_sql_command(std_sql, flags = '-q -t', dbname= 'postgres')
return standby_host.strip()
def get_filespace_location(self):
fs_sql = "select fselocation from pg_filespace_entry where fselocation like '%fs_walrepl_a%' and fsedbid=1;"
filespace_loc = PSQL.run_sql_command(fs_sql, flags = '-q -t', dbname= 'postgres')
return filespace_loc.strip()
def get_standbyhostnode(self):
'''
Function used to obtain the hostname of one of the segment node inorder to use it as the standby master node"
@return : returns the hostname of the segment node which can be used as the standby master node
'''
hostlist = self.config.get_hosts()
standby = ''
for host in hostlist:
if host.strip() != self.host:
standby = host.strip()
if len(standby) > 0 :
return standby
else:
tinctest.logger.error('No segment host other than master available to have remote standby')
def get_primary_pid(self):
pid = self.pgutil.get_pid_by_keyword(pgport=os.environ.get('PGPORT'), keyword=self.mdd)
if int(pid) == -1:
raise WalReplException('Unable to get pid of primary master process')
else:
return int(pid)
def compare_primary_pid(self, initial_pid):
final_pid = self.get_primary_pid()
if initial_pid == final_pid :
return True
return False
def create_dir_on_standby(self, standby, location):
fs_cmd = "gpssh -h %s -e 'rm -rf %s; mkdir -p %s' " % (standby, location, location)
cmd = Command(name='Make dierctory on standby before running the command', cmdStr = fs_cmd)
tinctest.logger.info('%s' % cmd)
cmd.run(validateAfter=True)
result = cmd.get_results()
if result.rc != 0:
raise WalReplException('Unable to create directory on standby')
else:
return True
def initstand_by_with_default(self):
master_host = self.get_masterhost()
gp_cmd = "/bin/bash -c 'gpinitstandby -s %s'" % (master_host)
logfile = open(local_path('install.log'),'w')
child = pexpect.spawn(gp_cmd, timeout=400)
child.logfile = logfile
sleep(2)
check = child.expect(['.* Enter standby filespace location for filespace pg_system .*', ' '])
if check != 0:
child.close()
l_file = open(local_path('install.log'),'r')
lines = l_file.readlines()
for line in lines:
if 'default: NA' in line:
return True
return False
def init_with_prompt(self,filespace_loc):
standby = self.get_standbyhostnode()
gp_cmd = "/bin/bash -c 'gpinitstandby -s %s -a'" % (standby)
logfile = open(local_path('install2.log'),'w')
child = pexpect.spawn(gp_cmd, timeout=400)
child.logfile = logfile
sleep(5)
check = child.expect(['.* Enter standby filespace location for filespace.*', ' '])
child.sendline(filespace_loc)
sleep(10)
check = child.expect(['.*Successfully created standby master.*'])
if check != 0:
tinctest.logger.error('gpinitstandy failed')
return False
child.close()
return True
class BkupRestore(MPPTestCase):
dbname = 'bkdb'
standby_port = '5433'
standby_dirname = '_newstandby'
def __init__(self,methodName):
self.gpact = GpactivateStandby()
self.gpinit = GpinitStandby()
self.runmixin = StandbyRunMixin()
self.runmixin.createdb(dbname=self.dbname)
self.bkup_timestamp = ""
self.gphome = os.environ.get('GPHOME')
self.mdd = os.environ.get('MASTER_DATA_DIRECTORY')
self.pgport = os.environ.get('PGPORT')
self.host = socket.gethostname()
self.standby_loc = os.path.split(self.mdd)[0]+self.standby_dirname
super(BkupRestore,self).__init__(methodName)
def createdb(self):
PSQL.run_sql_command('Drop database %s;Create database %s;' %(self.dbname, self.dbname), dbname='postgres')
def run_backup(self):
#Cleanup db_dumps folder before running backup
cleanup_cmd = "gpssh -h %s -e 'rm -rf /tmp/db_dumps'" % (self.host)
cmd = Command('cleanup', cleanup_cmd)
cmd.run(validateAfter=False)
gpc_cmd = 'gpcrondump -a -x %s -u /tmp' % self.dbname
cmd = Command(name='Run gpcrondump', cmdStr=gpc_cmd)
cmd.run(validateAfter=True)
result = cmd.get_results()
if result.rc != 0:
return False
else:
self.bkup_timestamp = self.get_timestamp(result.stdout)
return True
def validate_timestamp(self, ts):
try:
int_ts = int(ts)
except Exception as e:
raise Exception('Timestamp is not valid %s' % ts)
if len(ts) != 14:
raise Exception('Timestamp is invalid %s' % ts)
def get_timestamp(self, result):
for line in result.splitlines():
if 'Timestamp key = ' in line:
log_msg, delim, timestamp = line.partition('=')
ts = timestamp.strip()
self.validate_timestamp(ts)
return ts
raise Exception('Timestamp key not found')
def run_restore(self):
gpr_cmd = 'gpdbrestore -t %s -a -u /tmp' % self.bkup_timestamp
(rc, result) = self.run_remote(self.host, gpr_cmd, pgport=self.standby_port, standbydd=self.standby_loc)
if rc != 0:
return False
return True
def create_standby(self, local=True):
''' Create a standby '''
gputil.create_dir(self.host,self.standby_loc)
gputil.clean_dir(self.host,self.standby_loc)
self.gpinit.run(option = '-P %s -s %s -F pg_system:%s' % (self.standby_port, self.host, self.standby_loc))
def run_remote(self, standbyhost, rmt_cmd, pgport = '', standbydd = ''):
'''Runs remote command and returns rc, result '''
export_cmd = "source %s/greenplum_path.sh;export PGPORT=%s;export MASTER_DATA_DIRECTORY=%s" % (self.gphome, pgport, standbydd)
remote_cmd = "gpssh -h %s -e '%s;%s' " % (standbyhost, export_cmd, rmt_cmd)
cmd = Command(name='Running Remote command', cmdStr='%s' % remote_cmd)
tinctest.logger.info(" %s" % cmd)
cmd.run(validateAfter=False)
result = cmd.get_results()
return result.rc,result.stdout
def run_workload(self, dir, verify = False):
tinctest.logger.info("Running workload ...")
load_path = local_path(dir) + os.sep
for file in os.listdir(load_path):
if file.endswith(".sql"):
out_file = file.replace(".sql", ".out")
PSQL.run_sql_file(sql_file = load_path + file, dbname = self.dbname, port = self.pgport, out_file = load_path + out_file)
if verify == True:
self.validate_sql_files(load_path)
def validate_sql_files(self, load_path):
for file in os.listdir(load_path):
if file.endswith(".out"):
out_file = file
ans_file = file.replace('.out' , '.ans')
if os.path.exists(load_path + ans_file):
assert Gpdiff.are_files_equal(load_path + out_file, load_path + ans_file)
else:
raise Exception("No .ans file exists for %s " % out_file)
def failback(self):
gputil.failback_to_original_master(self.mdd, self.host, self.standby_loc, self.standby_port)
