def insert_data(self):
print "Testing Insert Data"
command = self.sql_command.format("insert into " + self.temp_table_name + " select * from generate_series(1,10)")
(retcode, out, err) = subprocess_command_with_results(self.test_user, command, self.active_master_host)
if retcode:
print_to_stderr_and_exit("Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}".format(retcode, out, err))
print out
def query_data(self):
print "Testing Querying Data"
command = self.sql_command.format("select * from " + self.temp_table_name)
(retcode, out, err) = subprocess_command_with_results(self.test_user, command, self.active_master_host)
if retcode:
print_to_stderr_and_exit("Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}".format(retcode, out, err))
print out
def create_table(self):
print "Testing Create Table"
command = self.sql_command.format("create table " + self.temp_table_name + "(a int)")
(retcode, out, err) = subprocess_command_with_results(self.test_user, command, self.active_master_host)
if retcode:
print_to_stderr_and_exit("Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}".format(retcode, out, err))
print out
def verify_segments_state(env, active_master_host):
import params
env.set_params(params)
command = "source /usr/local/greenplum-db/greenplum_path.sh; gpstate -d {0}/gpseg-1".format(
params.greenplum_master_dir
)
(retcode, out, err) = subprocess_command_with_results(params.greenplum_user, command, active_master_host)
if retcode:
print_to_stderr_and_exit(
"gpstate command returned non-zero result: {0}. Out: {1} Error: {2}".format(retcode, out, err)
)
Logger.info(
"Service check results:\nOutput of gpstate -d {0}\n".format(params.greenplum_master_data_dir) + str(out) + "\n"
)
if [
status_line
for status_line in out.split("\n")
if (status_line.startswith("gpseg") and status_line.split(" ")[1] == "d")
]:
print_to_stderr_and_exit(
"Service check detected that some of the Greenplum segments are down. run 'gpstate -t' on master for more info"
)
def check_data_correctness(self):
expected_data = "55"
print "Testing Correctness of Data. Finding sum of all the inserted entries. Expected output: " + expected_data
command = self.sql_noheader_command.format("select sum(a) from " + self.temp_table_name)
(retcode, out, err) = subprocess_command_with_results(self.test_user, command, self.active_master_host)
if retcode:
print_to_stderr_and_exit("Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}".format(retcode, out, err))
if expected_data != out.strip():
print_to_stderr_and_exit("Greenplum Smoke Tests Failed. Incorrect Data Returned. Expected Data: {0}. Acutal Data: {1} ".format(expected_data, out))
print out
def query_data(self):
print "Testing Querying Data"
command = self.sql_command.format("select * from " +
self.temp_table_name)
(retcode, out,
err) = subprocess_command_with_results(self.test_user, command,
self.active_master_host)
if retcode:
print_to_stderr_and_exit(
"Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}"
.format(retcode, out, err))
print out
def create_table(self):
print "Testing Create Table"
command = self.sql_command.format("create table " +
self.temp_table_name + "(a int)")
(retcode, out,
err) = subprocess_command_with_results(self.test_user, command,
self.active_master_host)
if retcode:
print_to_stderr_and_exit(
"Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}"
.format(retcode, out, err))
print out
def insert_data(self):
print "Testing Insert Data"
command = self.sql_command.format(
"insert into " + self.temp_table_name +
" select * from generate_series(1,10)")
(retcode, out,
err) = subprocess_command_with_results(self.test_user, command,
self.active_master_host)
if retcode:
print_to_stderr_and_exit(
"Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}"
.format(retcode, out, err))
print out
def check_standby_activation_prereq():
"""
Check the state of greenplum standby master (i.e params.greenplum_standby), and return an exception if it does not appear to be in a valid state.
"""
import params
GPACTIVATESTANDBY_INSTRUCTIONS = "\nSteps to execute gpactivatestandby.\n1. ssh to the standby host\n2. Login as gpadmin user: su - gpadmin\n3. Execute the command: gpactivatestandby -a -f -d {0}".format(params.greenplum_master_data_dir)
if not params.greenplum_standby:
print_to_stderr_and_exit("Standby is not configured in this cluster, activate standby command is used in clusters which has standby configured.")
# Check if there is postgres process running on master port, if running it indicates that standby has already been activated to active master
command = "netstat -tulpn | grep ':{0}\s' | grep postgres".format(params.greenplum_master_port)
returncode, stdoutdata, _ = subprocess_command_with_results(params.root_user, command, params.hostname)
if returncode == 0:
print_to_stderr_and_exit("Active greenplum master process appears to be already running on host {0} on port {1}, standby activation is not required. Process details:\n{2}".format(params.greenplum_standby, params.greenplum_master_port, stdoutdata))
# Check if postmaster.opts file exists, it helps to identify if.greenplum_standby is acting as standby
if not os.path.isfile(params.postmaster_opts_filepath):
EXCEPTION_MSG = "{0} file does not exists on the host {1}, cannot continue with activating standby. Please activate standby manually from command line until its fixed.".format(params.postmaster_opts_filepath, params.hostname) + GPACTIVATESTANDBY_INSTRUCTIONS + "\nNote: postmaster.opts is created automatically during start of greenplum master."
print_to_stderr_and_exit(EXCEPTION_MSG)
# Read postmaster.opts file into a list
with open(params.postmaster_opts_filepath, "r") as fh:
postmaster_content = fh.read().split()
"""
Raise exception if postmaster.opts content indicate that this host is not configured as standby
Case 1. If contents of postmaster.opts has flag "-x", it indicates that it is not configured as a standby.
Example contents of standby postmaster.opts:
postgres "-D" "/data/greenplum/master/gpseg-1" "-p" "5432" "-b" "12" "-C" "-1" "-z" "10" "-i"
Case 2. If standby activation was triggered but it failed, content of postmaster.opts will include "-x" flag but with another option "gp_role=utility". In this case, we should allow gpactivatestandby to be executed again
/usr/local/greenplum-db/bin/postgres "-D" "/data/greenplum/master/gpseg-1" "-p" "5433" "-b" "1" "-z" "1" "--silent-mode=true" "-i" "-M" "master" "-C" "-1" "-x" "0" "-c" "gp_role=utility"
"""
if '"-x"' in postmaster_content and not '"gp_role=utility"' in postmaster_content:
print_to_stderr_and_exit("Contents of {0} on host {1} indicate that it is not currently acting as standby greenplum master.\nActivateStandby from UI can only be run if host {1} is acting as standby greenplum master. Please verify if you have already activated it to active greenplum master.\nIf host {2} is acting as standby greenplum master and needs to be activated, please execute gpactivatestandby manually from command line.".format(params.postmaster_opts_filepath, params.greenplum_standby, params.greenplum_master) + GPACTIVATESTANDBY_INSTRUCTIONS)
"""
If a lock file /tmp/.s.PGSQL.<master_port>.lock is found on.greenplum_master host, activate standby will fail stating that an active postgres process in running on it.
Ensure that gpactivatestandby is triggered only if the lock file is not existing. If not checked, gpactivatestandby will be executed and the contents
of postmaster.opts will get inconsistent impacting start / stop operation from ambari ui, so avoid such cases.
"""
lock_file_name = "/tmp/.s.PGSQL.{0}.lock".format(params.greenplum_master_port)
# ssh to the.greenplum_master and identify if file exists or not
if not active_master_helper.is_file_missing(params.greenplum_master, lock_file_name):
print_to_stderr_and_exit("Lock file /tmp/.s.PGSQL.{0}.lock exists on host {1} suggesting that active postgres process is running on it.\nIf greenplum master process is running on host {1}, please stop the database before retrying activate standby.\nIf greenplum master is not running on host {1}, please delete /tmp/.s.PGSQL.{0}, /tmp/.s.PGSQL.{0}.* and {2}/postmaster.pid files on it before retrying activate standby.".format(params.greenplum_master_port, params.greenplum_master, params.greenplum_master_data_dir))
def check_data_correctness(self):
expected_data = "55"
print "Testing Correctness of Data. Finding sum of all the inserted entries. Expected output: " + expected_data
command = self.sql_noheader_command.format("select sum(a) from " +
self.temp_table_name)
(retcode, out,
err) = subprocess_command_with_results(self.test_user, command,
self.active_master_host)
if retcode:
print_to_stderr_and_exit(
"Greenplum Smoke Tests Failed. Return Code: {0}. Out: {1} Error: {2}"
.format(retcode, out, err))
if expected_data != out.strip():
print_to_stderr_and_exit(
"Greenplum Smoke Tests Failed. Incorrect Data Returned. Expected Data: {0}. Acutal Data: {1} "
.format(expected_data, out))
print out
def verify_segments_state(env, active_master_host):
import params
env.set_params(params)
command = "source /usr/local/greenplum-db/greenplum_path.sh; gpstate -d {0}/gpseg-1".format(
params.greenplum_master_dir)
(retcode, out,
err) = subprocess_command_with_results(params.greenplum_user, command,
active_master_host)
if retcode:
print_to_stderr_and_exit(
"gpstate command returned non-zero result: {0}. Out: {1} Error: {2}"
.format(retcode, out, err))
Logger.info("Service check results:\nOutput of gpstate -d {0}\n".format(
params.greenplum_master_data_dir) + str(out) + "\n")
if [
status_line for status_line in out.split('\n') if
(status_line.startswith('gpseg') and status_line.split(" ")[1] == 'd')
]:
print_to_stderr_and_exit(
"Service check detected that some of the Greenplum segments are down. run 'gpstate -t' on master for more info"
)
def get_last_modified_time(hostname, filepath):
import params
cmd = "stat -c %Y {0}".format(filepath)
_, stdoutdata, _ = subprocess_command_with_results(params.greenplum_user,
cmd, hostname)
return stdoutdata
def is_dir_existing(hostname, datadir):
import params
cmd = "[ -d {0} ]".format(datadir)
returncode, _, _ = subprocess_command_with_results(params.greenplum_user, cmd, hostname)
return returncode == 0
def is_file_missing(hostname, filename):
import params
cmd = "[ -f {0} ]".format(filename)
returncode, _, _ = subprocess_command_with_results(params.greenplum_user,
cmd, hostname)
return not (returncode == 0)
def is_file_missing(hostname, filename):
import params
cmd = "[ -f {0} ]".format(filename)
returncode, _, _ = subprocess_command_with_results(params.greenplum_user, cmd, hostname)
return not(returncode == 0)
def read_file(hostname, filename):
import params
cmd = "cat {0}".format(filename)
_, stdoutdata, _ = subprocess_command_with_results(params.greenplum_user, cmd, hostname)
return stdoutdata
def get_last_modified_time(hostname, filepath):
import params
cmd = "stat -c %Y {0}".format(filepath)
_, stdoutdata, _ = subprocess_command_with_results(params.greenplum_user, cmd, hostname)
return stdoutdata
def is_dir_existing(hostname, datadir):
import params
cmd = "[ -d {0} ]".format(datadir)
returncode, _, _ = subprocess_command_with_results(params.greenplum_user,
cmd, hostname)
return returncode == 0
def read_file(hostname, filename):
import params
cmd = "cat {0}".format(filename)
_, stdoutdata, _ = subprocess_command_with_results(params.greenplum_user,
cmd, hostname)
return stdoutdata
