def get_check_command(oozie_url, host_name, configurations, parameters):
kerberos_env = None
user = USER_DEFAULT
if USER_KEY in configurations:
user = configurations[USER_KEY]
security_enabled = False
if SECURITY_ENABLED in configurations:
security_enabled = str(configurations[SECURITY_ENABLED]).upper() == 'TRUE'
if security_enabled:
# defaults
user_keytab = USER_KEYTAB_DEFAULT
user_principal = USER_PRINCIPAL_DEFAULT
# check script params
if USER_PRINCIPAL_SCRIPT_PARAM_KEY in parameters:
user_principal = parameters[USER_PRINCIPAL_SCRIPT_PARAM_KEY]
user_principal = user_principal.replace('_HOST', host_name.lower())
if USER_KEYTAB_SCRIPT_PARAM_KEY in parameters:
user_keytab = parameters[USER_KEYTAB_SCRIPT_PARAM_KEY]
# check configurations last as they should always take precedence
if USER_PRINCIPAL_KEY in configurations:
user_principal = configurations[USER_PRINCIPAL_KEY]
user_principal = user_principal.replace('_HOST', host_name.lower())
if USER_KEYTAB_KEY in configurations:
user_keytab = configurations[USER_KEYTAB_KEY]
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(env.tmp_dir, os.sep, os.getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
kerberos_executable_search_paths = None
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
klist_path_local = get_klist_path(kerberos_executable_search_paths)
kinit_path_local = get_kinit_path(kerberos_executable_search_paths)
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
kinit_command = "{0} -s {1} || ".format(klist_path_local, ccache_file) + format("{kinit_path_local} -l 5m20s -c {ccache_file} -kt {user_keytab} {user_principal}; ")
Execute(kinit_command, environment=kerberos_env, user=user)
# oozie configuration directory uses a symlink when > HDP 2.2
oozie_config_directory = OOZIE_CONF_DIR_LEGACY
if os.path.exists(OOZIE_CONF_DIR):
oozie_config_directory = OOZIE_CONF_DIR
command = "source {0}/oozie-env.sh ; oozie admin -oozie {1} -status".format(
oozie_config_directory, oozie_url)
return (command, kerberos_env, user)
def get_check_command(oozie_url, host_name, configurations):
if OOZIE_USER in configurations:
oozie_user = configurations[OOZIE_USER]
else:
raise Exception("Oozie user is required")
security_enabled = False
if SECURITY_ENABLED in configurations:
security_enabled = str(configurations[SECURITY_ENABLED]).upper() == 'TRUE'
kerberos_env = None
if security_enabled:
if OOZIE_KEYTAB in configurations and OOZIE_PRINCIPAL in configurations:
oozie_keytab = configurations[OOZIE_KEYTAB]
oozie_principal = configurations[OOZIE_PRINCIPAL]
# substitute _HOST in kerberos principal with actual fqdn
oozie_principal = oozie_principal.replace('_HOST', host_name)
else:
raise KerberosPropertiesNotFound('The Oozie keytab and principal are required configurations when security is enabled.')
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(env.tmp_dir, os.sep, os.getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
else:
kerberos_executable_search_paths = None
klist_path_local = get_klist_path(kerberos_executable_search_paths)
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command, user=oozie_user)
if return_code != 0:
kinit_path_local = get_kinit_path(kerberos_executable_search_paths)
kinit_command = format("{kinit_path_local} -l 5m -kt {oozie_keytab} {oozie_principal}; ")
# kinit
Execute(kinit_command,
environment=kerberos_env,
user=oozie_user,
)
# oozie configuration directory uses a symlink when > HDP 2.2
oozie_config_directory = OOZIE_CONF_DIR_LEGACY
if os.path.exists(OOZIE_CONF_DIR):
oozie_config_directory = OOZIE_CONF_DIR
command = "source {0}/oozie-env.sh ; oozie admin -oozie {1} -status".format(
oozie_config_directory, oozie_url)
return (command, kerberos_env, oozie_user)
def get_check_command(oozie_url, host_name, configurations):
security_enabled = False
if SECURITY_ENABLED in configurations:
security_enabled = str(
configurations[SECURITY_ENABLED]).upper() == 'TRUE'
kerberos_env = None
if security_enabled:
if OOZIE_KEYTAB in configurations and OOZIE_PRINCIPAL in configurations:
oozie_keytab = configurations[OOZIE_KEYTAB]
oozie_principal = configurations[OOZIE_PRINCIPAL]
# substitute _HOST in kerberos principal with actual fqdn
oozie_principal = oozie_principal.replace('_HOST', host_name)
else:
raise KerberosPropertiesNotFound(
'The Oozie keytab and principal are required configurations when security is enabled.'
)
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(
env.tmp_dir, os.sep, os.getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[
KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
else:
kerberos_executable_search_paths = None
klist_path_local = get_klist_path(kerberos_executable_search_paths)
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command)
if return_code != 0:
kinit_path_local = get_kinit_path(kerberos_executable_search_paths)
kinit_command = format(
"{kinit_path_local} -l 5m -kt {oozie_keytab} {oozie_principal}; "
)
# kinit
Execute(kinit_command, environment=kerberos_env)
# oozie configuration directory uses a symlink when > HDP 2.2
oozie_config_directory = OOZIE_CONF_DIR_LEGACY
if os.path.exists(OOZIE_CONF_DIR):
oozie_config_directory = OOZIE_CONF_DIR
command = "source {0}/oozie-env.sh ; oozie admin -oozie {1} -status".format(
oozie_config_directory, oozie_url)
return (command, kerberos_env)
def get_check_command(oozie_url, host_name, parameters):
security_enabled = False
if SECURITY_ENABLED in parameters:
security_enabled = str(parameters[SECURITY_ENABLED]).upper() == 'TRUE'
kerberos_env = None
if security_enabled:
if OOZIE_KEYTAB in parameters and OOZIE_PRINCIPAL in parameters:
oozie_keytab = parameters[OOZIE_KEYTAB]
oozie_principal = parameters[OOZIE_PRINCIPAL]
# substitute _HOST in kerberos principal with actual fqdn
oozie_principal = oozie_principal.replace('_HOST', host_name)
else:
raise KerberosPropertiesNotFound('The Oozie keytab and principal are required parameters when security is enabled.')
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(env.tmp_dir, os.sep, os.getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
klist_path_local = get_klist_path()
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command)
if return_code != 0:
kinit_path_local = get_kinit_path()
kinit_command = format("{kinit_path_local} -l 5m -kt {oozie_keytab} {oozie_principal}; ")
# kinit
Execute(kinit_command, environment=kerberos_env)
command = format("source /etc/oozie/conf/oozie-env.sh ; oozie admin -oozie {oozie_url} -status")
return (command, kerberos_env)
so_src_x86 = format("{so_src_dir_x86}/{snappy_so}")
so_src_x64 = format("{so_src_dir_x64}/{snappy_so}")
#security params
smoke_user_keytab = config['configurations']['cluster-env']['smokeuser_keytab']
hdfs_user_keytab = config['configurations']['hadoop-env']['hdfs_user_keytab']
falcon_user = config['configurations']['falcon-env']['falcon_user']
#exclude file
hdfs_exclude_file = default("/clusterHostInfo/decom_dn_hosts", [])
exclude_file_path = config['configurations']['hdfs-site']['dfs.hosts.exclude']
update_exclude_file_only = default("/commandParams/update_exclude_file_only",
False)
command_phase = default("/commandParams/phase", "")
klist_path_local = get_klist_path(
default('/configurations/kerberos-env/executable_search_paths', None))
kinit_path_local = get_kinit_path(
default('/configurations/kerberos-env/executable_search_paths', None))
#hosts
hostname = config["hostname"]
rm_host = default("/clusterHostInfo/rm_host", [])
slave_hosts = default("/clusterHostInfo/slave_hosts", [])
oozie_servers = default("/clusterHostInfo/oozie_server", [])
hcat_server_hosts = default("/clusterHostInfo/webhcat_server_host", [])
hive_server_host = default("/clusterHostInfo/hive_server_host", [])
hbase_master_hosts = default("/clusterHostInfo/hbase_master_hosts", [])
hs_host = default("/clusterHostInfo/hs_host", [])
jtnode_host = default("/clusterHostInfo/jtnode_host", [])
namenode_host = default("/clusterHostInfo/namenode_host", [])
nm_host = default("/clusterHostInfo/nm_host", [])
ganglia_server_hosts = default("/clusterHostInfo/ganglia_server_host", [])
def get_check_command(oozie_url, host_name, configurations, parameters, only_kinit):
kerberos_env = None
user = USER_DEFAULT
if USER_KEY in configurations:
user = configurations[USER_KEY]
if is_security_enabled(configurations):
# defaults
user_keytab = USER_KEYTAB_DEFAULT
user_principal = USER_PRINCIPAL_DEFAULT
# check script params
if USER_PRINCIPAL_SCRIPT_PARAM_KEY in parameters:
user_principal = parameters[USER_PRINCIPAL_SCRIPT_PARAM_KEY]
user_principal = user_principal.replace('_HOST', host_name.lower())
if USER_KEYTAB_SCRIPT_PARAM_KEY in parameters:
user_keytab = parameters[USER_KEYTAB_SCRIPT_PARAM_KEY]
# check configurations last as they should always take precedence
if USER_PRINCIPAL_KEY in configurations:
user_principal = configurations[USER_PRINCIPAL_KEY]
user_principal = user_principal.replace('_HOST', host_name.lower())
if USER_KEYTAB_KEY in configurations:
user_keytab = configurations[USER_KEYTAB_KEY]
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(env.tmp_dir, os.sep, os.getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
kerberos_executable_search_paths = None
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
klist_path_local = get_klist_path(kerberos_executable_search_paths)
kinit_path_local = get_kinit_path(kerberos_executable_search_paths)
kinit_part_command = format("{kinit_path_local} -l 5m20s -c {ccache_file} -kt {user_keytab} {user_principal}; ")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
if only_kinit:
kinit_command = kinit_part_command
else:
kinit_command = "{0} -s {1} || ".format(klist_path_local, ccache_file) + kinit_part_command
Execute(kinit_command, environment=kerberos_env, user=user)
# oozie configuration directory uses a symlink when > HDP 2.2
oozie_config_directory = OOZIE_CONF_DIR_LEGACY
if os.path.exists(OOZIE_CONF_DIR):
oozie_config_directory = OOZIE_CONF_DIR
command = "source {0}/oozie-env.sh ; oozie admin -oozie {1} -status".format(
oozie_config_directory, oozie_url)
return (command, kerberos_env, user)
def get_check_command(oozie_url, host_name, configurations, parameters,
only_kinit):
kerberos_env = None
user = USER_DEFAULT
if USER_KEY in configurations:
user = configurations[USER_KEY]
if is_security_enabled(configurations):
# defaults
user_keytab = USER_KEYTAB_DEFAULT
user_principal = USER_PRINCIPAL_DEFAULT
# check script params
if USER_PRINCIPAL_SCRIPT_PARAM_KEY in parameters:
user_principal = parameters[USER_PRINCIPAL_SCRIPT_PARAM_KEY]
user_principal = user_principal.replace('_HOST', host_name.lower())
if USER_KEYTAB_SCRIPT_PARAM_KEY in parameters:
user_keytab = parameters[USER_KEYTAB_SCRIPT_PARAM_KEY]
# check configurations last as they should always take precedence
if USER_PRINCIPAL_KEY in configurations:
user_principal = configurations[USER_PRINCIPAL_KEY]
user_principal = user_principal.replace('_HOST', host_name.lower())
if USER_KEYTAB_KEY in configurations:
user_keytab = configurations[USER_KEYTAB_KEY]
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(
env.tmp_dir, os.sep, os.getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
kerberos_executable_search_paths = None
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[
KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
klist_path_local = get_klist_path(kerberos_executable_search_paths)
kinit_path_local = get_kinit_path(kerberos_executable_search_paths)
kinit_part_command = format(
"{kinit_path_local} -l 5m20s -c {ccache_file} -kt {user_keytab} {user_principal}; "
)
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
if only_kinit:
kinit_command = kinit_part_command
else:
kinit_command = "{0} -s {1} || ".format(
klist_path_local, ccache_file) + kinit_part_command
# prevent concurrent kinit
kinit_lock = global_lock.get_lock(global_lock.LOCK_TYPE_KERBEROS)
kinit_lock.acquire()
try:
Execute(kinit_command, environment=kerberos_env, user=user)
finally:
kinit_lock.release()
# Configure stack root
stack_root = STACK_ROOT_DEFAULT
if STACK_NAME_KEY in configurations and STACK_ROOT_KEY in configurations:
stack_root = stack_tools.get_stack_root(
configurations[STACK_NAME_KEY],
configurations[STACK_ROOT_KEY]).lower()
# oozie configuration directory using a symlink
oozie_config_directory = OOZIE_CONF_DIR.replace(STACK_ROOT_PATTERN,
stack_root)
if not os.path.exists(oozie_config_directory):
oozie_config_directory = OOZIE_CONF_DIR_LEGACY
command = "source {0}/oozie-env.sh ; oozie admin -oozie {1} -status".format(
oozie_config_directory, oozie_url)
return (command, kerberos_env, user)
def get_check_command(oozie_url, host_name, configurations, parameters):
kerberos_env = None
smokeuser = SMOKEUSER_DEFAULT
if SMOKEUSER_KEY in configurations:
smokeuser = configurations[SMOKEUSER_KEY]
security_enabled = False
if SECURITY_ENABLED in configurations:
security_enabled = str(configurations[SECURITY_ENABLED]).upper() == 'TRUE'
if security_enabled:
# defaults
smokeuser_keytab = SMOKEUSER_KEYTAB_DEFAULT
smokeuser_principal = SMOKEUSER_PRINCIPAL_DEFAULT
# check script params
if SMOKEUSER_PRINCIPAL_SCRIPT_PARAM_KEY in parameters:
smokeuser_principal = parameters[SMOKEUSER_PRINCIPAL_SCRIPT_PARAM_KEY]
if SMOKEUSER_KEYTAB_SCRIPT_PARAM_KEY in parameters:
smokeuser_keytab = parameters[SMOKEUSER_KEYTAB_SCRIPT_PARAM_KEY]
# check configurations last as they should always take precedence
if SMOKEUSER_PRINCIPAL_KEY in configurations:
smokeuser_principal = configurations[SMOKEUSER_PRINCIPAL_KEY]
if SMOKEUSER_KEYTAB_KEY in configurations:
smokeuser_keytab = configurations[SMOKEUSER_KEYTAB_KEY]
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(env.tmp_dir, os.sep, os.getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
kerberos_executable_search_paths = None
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
klist_path_local = get_klist_path(kerberos_executable_search_paths)
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command, user=smokeuser)
if return_code != 0:
kinit_path_local = get_kinit_path(kerberos_executable_search_paths)
kinit_command = format("{kinit_path_local} -l 5m -kt {smokeuser_keytab} {smokeuser_principal}; ")
# kinit
Execute(kinit_command, environment=kerberos_env, user=smokeuser)
# oozie configuration directory uses a symlink when > HDP 2.2
oozie_config_directory = OOZIE_CONF_DIR_LEGACY
if os.path.exists(OOZIE_CONF_DIR):
oozie_config_directory = OOZIE_CONF_DIR
command = "source {0}/oozie-env.sh ; oozie admin -oozie {1} -status".format(
oozie_config_directory, oozie_url)
return (command, kerberos_env, smokeuser)
def execute(configurations={}, parameters={}, host_name=None):
"""
Returns a tuple containing the result code and a pre-formatted result label
Keyword arguments:
configurations (dictionary): a mapping of configuration key to value
parameters (dictionary): a mapping of script parameter key to value
host_name (string): the name of this host where the alert is running
"""
result_code = RESULT_CODE_UNKNOWN
if configurations is None:
return (result_code, ['There were no configurations supplied to the script.'])
webhcat_port = WEBHCAT_PORT_DEFAULT
if TEMPLETON_PORT_KEY in configurations:
webhcat_port = int(configurations[TEMPLETON_PORT_KEY])
security_enabled = False
if SECURITY_ENABLED_KEY in configurations:
security_enabled = configurations[SECURITY_ENABLED_KEY].lower() == 'true'
# parse script arguments
connection_timeout = CONNECTION_TIMEOUT_DEFAULT
curl_connection_timeout = CURL_CONNECTION_TIMEOUT_DEFAULT
if CONNECTION_TIMEOUT_KEY in parameters:
connection_timeout = float(parameters[CONNECTION_TIMEOUT_KEY])
curl_connection_timeout = str(int(connection_timeout))
# the alert will always run on the webhcat host
if host_name is None:
host_name = socket.getfqdn()
# webhcat always uses http, never SSL
query_url = "http://{0}:{1}/templeton/v1/status".format(host_name, webhcat_port)
# initialize
total_time = 0
json_response = {}
if security_enabled:
if WEBHCAT_KEYTAB_KEY not in configurations or WEBHCAT_PRINCIPAL_KEY not in configurations:
return (RESULT_CODE_UNKNOWN, [str(configurations)])
try:
webhcat_keytab = configurations[WEBHCAT_KEYTAB_KEY]
webhcat_principal = configurations[WEBHCAT_PRINCIPAL_KEY]
# substitute _HOST in kerberos principal with actual fqdn
webhcat_principal = webhcat_principal.replace('_HOST', host_name)
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}webhcat_alert_cc_{2}".format(env.tmp_dir, sep, getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
else:
kerberos_executable_search_paths = None
klist_path_local = get_klist_path(kerberos_executable_search_paths)
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command)
if return_code != 0:
kinit_path_local = get_kinit_path(kerberos_executable_search_paths)
kinit_command = format("{kinit_path_local} -l 5m -c {ccache_file} -kt {webhcat_keytab} {webhcat_principal}; ")
# kinit so that curl will work with --negotiate
Execute(kinit_command)
# make a single curl call to get just the http code
curl = subprocess.Popen(['curl', '--negotiate', '-u', ':', '-sL', '-w',
'%{http_code}', '--connect-timeout', curl_connection_timeout,
'-o', '/dev/null', query_url], stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=kerberos_env)
stdout, stderr = curl.communicate()
if stderr != '':
raise Exception(stderr)
# check the response code
response_code = int(stdout)
# 0 indicates no connection
if response_code == 0:
label = CRITICAL_CONNECTION_MESSAGE.format(query_url)
return (RESULT_CODE_CRITICAL, [label])
# any other response aside from 200 is a problem
if response_code != 200:
label = CRITICAL_HTTP_MESSAGE.format(response_code, query_url)
return (RESULT_CODE_CRITICAL, [label])
# now that we have the http status and it was 200, get the content
start_time = time.time()
curl = subprocess.Popen(['curl', '--negotiate', '-u', ':', '-sL',
'--connect-timeout', curl_connection_timeout, query_url, ],
stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=kerberos_env)
stdout, stderr = curl.communicate()
total_time = time.time() - start_time
if stderr != '':
raise Exception(stderr)
json_response = json.loads(stdout)
except Exception, exception:
return (RESULT_CODE_CRITICAL, [str(exception)])
def execute(configurations={}, parameters={}, host_name=None):
"""
Returns a tuple containing the result code and a pre-formatted result label
Keyword arguments:
configurations (dictionary): a mapping of configuration key to value
parameters (dictionary): a mapping of script parameter key to value
host_name (string): the name of this host where the alert is running
"""
result_code = RESULT_CODE_UNKNOWN
if configurations is None:
return (result_code,
['There were no configurations supplied to the script.'])
webhcat_port = WEBHCAT_PORT_DEFAULT
if TEMPLETON_PORT_KEY in configurations:
webhcat_port = int(configurations[TEMPLETON_PORT_KEY])
security_enabled = False
if SECURITY_ENABLED_KEY in configurations:
security_enabled = configurations[SECURITY_ENABLED_KEY].lower(
) == 'true'
# parse script arguments
connection_timeout = CONNECTION_TIMEOUT_DEFAULT
curl_connection_timeout = CURL_CONNECTION_TIMEOUT_DEFAULT
if CONNECTION_TIMEOUT_KEY in parameters:
connection_timeout = float(parameters[CONNECTION_TIMEOUT_KEY])
curl_connection_timeout = str(int(connection_timeout))
# the alert will always run on the webhcat host
if host_name is None:
host_name = socket.getfqdn()
smokeuser = SMOKEUSER_DEFAULT
if SMOKEUSER_KEY in configurations:
smokeuser = configurations[SMOKEUSER_KEY]
if SMOKEUSER_SCRIPT_PARAM_KEY in parameters:
smokeuser = parameters[SMOKEUSER_SCRIPT_PARAM_KEY]
# webhcat always uses http, never SSL
query_url = "http://{0}:{1}/templeton/v1/status?user.name={2}".format(
host_name, webhcat_port, smokeuser)
# initialize
total_time = 0
json_response = {}
if security_enabled:
if WEBHCAT_KEYTAB_KEY not in configurations or WEBHCAT_PRINCIPAL_KEY not in configurations:
return (RESULT_CODE_UNKNOWN, [str(configurations)])
try:
webhcat_keytab = configurations[WEBHCAT_KEYTAB_KEY]
webhcat_principal = configurations[WEBHCAT_PRINCIPAL_KEY]
# substitute _HOST in kerberos principal with actual fqdn
webhcat_principal = webhcat_principal.replace('_HOST', host_name)
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}webhcat_alert_cc_{2}".format(
env.tmp_dir, sep, getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
# Get the configured Kerberos executable search paths, if any
if KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY in configurations:
kerberos_executable_search_paths = configurations[
KERBEROS_EXECUTABLE_SEARCH_PATHS_KEY]
else:
kerberos_executable_search_paths = None
klist_path_local = get_klist_path(kerberos_executable_search_paths)
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command)
if return_code != 0:
kinit_path_local = get_kinit_path(
kerberos_executable_search_paths)
kinit_command = format(
"{kinit_path_local} -l 5m -c {ccache_file} -kt {webhcat_keytab} {webhcat_principal}; "
)
# kinit so that curl will work with --negotiate
Execute(kinit_command)
# make a single curl call to get just the http code
curl = subprocess.Popen([
'curl', '--negotiate', '-u', ':', '-sL', '-w', '%{http_code}',
'--connect-timeout', curl_connection_timeout, '-o',
'/dev/null', query_url
],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=kerberos_env)
stdout, stderr = curl.communicate()
if stderr != '':
raise Exception(stderr)
# check the response code
response_code = int(stdout)
# 0 indicates no connection
if response_code == 0:
label = CRITICAL_CONNECTION_MESSAGE.format(query_url)
return (RESULT_CODE_CRITICAL, [label])
# any other response aside from 200 is a problem
if response_code != 200:
label = CRITICAL_HTTP_MESSAGE.format(response_code, query_url)
return (RESULT_CODE_CRITICAL, [label])
# now that we have the http status and it was 200, get the content
start_time = time.time()
curl = subprocess.Popen([
'curl',
'--negotiate',
'-u',
':',
'-sL',
'--connect-timeout',
curl_connection_timeout,
query_url,
],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=kerberos_env)
stdout, stderr = curl.communicate()
total_time = time.time() - start_time
if stderr != '':
raise Exception(stderr)
json_response = json.loads(stdout)
except Exception, exception:
return (RESULT_CODE_CRITICAL, [str(exception)])
so_src_dir_x64 = format("{hadoop_home}/lib64")
so_src_x86 = format("{so_src_dir_x86}/{snappy_so}")
so_src_x64 = format("{so_src_dir_x64}/{snappy_so}")
#security params
smoke_user_keytab = config['configurations']['cluster-env']['smokeuser_keytab']
hdfs_user_keytab = config['configurations']['hadoop-env']['hdfs_user_keytab']
falcon_user = config['configurations']['falcon-env']['falcon_user']
#exclude file
hdfs_exclude_file = default("/clusterHostInfo/decom_dn_hosts", [])
exclude_file_path = config['configurations']['hdfs-site']['dfs.hosts.exclude']
update_exclude_file_only = default("/commandParams/update_exclude_file_only",False)
command_phase = default("/commandParams/phase","")
klist_path_local = get_klist_path(default('/configurations/kerberos-env/executable_search_paths', None))
kinit_path_local = get_kinit_path(default('/configurations/kerberos-env/executable_search_paths', None))
#hosts
hostname = config["hostname"]
rm_host = default("/clusterHostInfo/rm_host", [])
slave_hosts = default("/clusterHostInfo/slave_hosts", [])
oozie_servers = default("/clusterHostInfo/oozie_server", [])
hcat_server_hosts = default("/clusterHostInfo/webhcat_server_host", [])
hive_server_host = default("/clusterHostInfo/hive_server_host", [])
hbase_master_hosts = default("/clusterHostInfo/hbase_master_hosts", [])
hs_host = default("/clusterHostInfo/hs_host", [])
jtnode_host = default("/clusterHostInfo/jtnode_host", [])
namenode_host = default("/clusterHostInfo/namenode_host", [])
nm_host = default("/clusterHostInfo/nm_host", [])
ganglia_server_hosts = default("/clusterHostInfo/ganglia_server_host", [])
journalnode_hosts = default("/clusterHostInfo/journalnode_hosts", [])
def curl_krb_request(tmp_dir,
keytab,
principal,
url,
cache_file_prefix,
krb_exec_search_paths,
return_only_http_code,
caller_label,
user,
connection_timeout=CONNECTION_TIMEOUT_DEFAULT,
ca_certs=None,
kinit_timer_ms=DEFAULT_KERBEROS_KINIT_TIMER_MS,
method='',
body='',
header=''):
"""
Makes a curl request using the kerberos credentials stored in a calculated cache file. The
cache file is created by combining the supplied principal, keytab, user, and request name into
a unique hash.
This function will use the klist command to determine if the cache is expired and will perform
a kinit if necessary. Additionally, it has an internal timer to force a kinit after a
configurable amount of time. This is to prevent boundary issues where requests hit the edge
of a ticket's lifetime.
:param tmp_dir: the directory to use for storing the local kerberos cache for this request.
:param keytab: the location of the keytab to use when performing a kinit
:param principal: the principal to use when performing a kinit
:param url: the URL to request
:param cache_file_prefix: an identifier used to build the unique cache name for this request.
This ensures that multiple requests can use the same cache.
:param krb_exec_search_paths: the search path to use for invoking kerberos binaries
:param return_only_http_code: True to return only the HTTP code, False to return GET content
:param caller_label: an identifier to give context into the caller of this module (used for logging)
:param user: the user to invoke the curl command as
:param connection_timeout: if specified, a connection timeout for curl (default 10 seconds)
:param ca_certs: path to certificates
:param kinit_timer_ms: if specified, the time (in ms), before forcing a kinit even if the
klist cache is still valid.
:return:
"""
import uuid
# backward compatibility with old code and management packs, etc. All new code need pass ca_certs explicitly
if ca_certs is None:
try:
from ambari_agent.AmbariConfig import AmbariConfig
ca_certs = AmbariConfig.get_resolved_config(
).get_ca_cert_file_path()
except:
pass
# start off false
is_kinit_required = False
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl. Use a hash of the combination of the principal and keytab file
# to generate a (relatively) unique cache filename so that we can use it as needed. Scope
# this file by user in order to prevent sharing of cache files by multiple users.
ccache_file_name = HASH_ALGORITHM("{0}|{1}".format(principal,
keytab)).hexdigest()
curl_krb_cache_path = os.path.join(tmp_dir, "curl_krb_cache")
if not os.path.exists(curl_krb_cache_path):
os.makedirs(curl_krb_cache_path)
os.chmod(curl_krb_cache_path, 01777)
ccache_file_path = "{0}{1}{2}_{3}_cc_{4}".format(curl_krb_cache_path,
os.sep, cache_file_prefix,
user, ccache_file_name)
kerberos_env = {'KRB5CCNAME': ccache_file_path}
# concurrent kinit's can cause the following error:
# Internal credentials cache error while storing credentials while getting initial credentials
kinit_lock = global_lock.get_lock(global_lock.LOCK_TYPE_KERBEROS)
kinit_lock.acquire()
try:
# If there are no tickets in the cache or they are expired, perform a kinit, else use what
# is in the cache
if krb_exec_search_paths:
klist_path_local = get_klist_path(krb_exec_search_paths)
else:
klist_path_local = get_klist_path()
# take a look at the last time kinit was run for the specified cache and force a new
# kinit if it's time; this helps to avoid problems approaching ticket boundary when
# executing a klist and then a curl
last_kinit_time = _KINIT_CACHE_TIMES.get(ccache_file_name, 0)
current_time = long(time.time())
if current_time - kinit_timer_ms > last_kinit_time:
is_kinit_required = True
# if the time has not expired, double-check that the cache still has a valid ticket
if not is_kinit_required:
klist_command = "{0} -s {1}".format(klist_path_local,
ccache_file_path)
is_kinit_required = (shell.call(klist_command, user=user)[0] != 0)
# if kinit is required, the perform the kinit
if is_kinit_required:
if krb_exec_search_paths:
kinit_path_local = get_kinit_path(krb_exec_search_paths)
else:
kinit_path_local = get_kinit_path()
logger.debug(
"Enabling Kerberos authentication for %s via GSSAPI using ccache at %s",
caller_label, ccache_file_path)
# kinit; there's no need to set a ticket timeout as this will use the default invalidation
# configured in the krb5.conf - regenerating keytabs will not prevent an existing cache
# from working correctly
shell.checked_call("{0} -c {1} -kt {2} {3} > /dev/null".format(
kinit_path_local, ccache_file_path, keytab, principal),
user=user)
# record kinit time
_KINIT_CACHE_TIMES[ccache_file_name] = current_time
else:
# no kinit needed, use the cache
logger.debug(
"Kerberos authentication for %s via GSSAPI already enabled using ccache at %s.",
caller_label, ccache_file_path)
finally:
kinit_lock.release()
# check if cookies dir exists, if not then create it
cookies_dir = os.path.join(tmp_dir, "cookies")
if not os.path.exists(cookies_dir):
os.makedirs(cookies_dir)
cookie_file_name = str(uuid.uuid4())
cookie_file = os.path.join(cookies_dir, cookie_file_name)
start_time = time.time()
error_msg = None
# setup timeouts for the request; ensure we use integers since that is what curl needs
connection_timeout = int(connection_timeout)
maximum_timeout = connection_timeout + 2
ssl_options = ['-k']
if ca_certs:
ssl_options = ['--cacert', ca_certs]
try:
if return_only_http_code:
_, curl_stdout, curl_stderr = get_user_call_output(
['curl', '--location-trusted'] + ssl_options + [
'--negotiate', '-u', admin_username + ':' + admin_password,
'-b', cookie_file, '-c', cookie_file, '-w', '%{http_code}',
url, '--connect-timeout',
str(connection_timeout), '--max-time',
str(maximum_timeout), '-o', '/dev/null'
],
user=user,
env=kerberos_env)
else:
curl_command = ['curl', '--location-trusted'] + ssl_options + [
'--negotiate', '-u', admin_username + ':' + admin_password,
'-b', cookie_file, '-c', cookie_file, url, '--connect-timeout',
str(connection_timeout), '--max-time',
str(maximum_timeout)
]
# returns response body
if len(method) > 0 and len(body) == 0 and len(header) == 0:
curl_command.extend(['-X', method])
elif len(method) > 0 and len(body) == 0 and len(header) > 0:
curl_command.extend(['-H', header, '-X', method])
elif len(method) > 0 and len(body) > 0 and len(header) == 0:
curl_command.extend(['-X', method, '-d', body])
elif len(method) > 0 and len(body) > 0 and len(header) > 0:
curl_command.extend(['-H', header, '-X', method, '-d', body])
_, curl_stdout, curl_stderr = get_user_call_output(
curl_command, user=user, env=kerberos_env)
except Fail:
if logger.isEnabledFor(logging.DEBUG):
logger.exception(
"Unable to make a curl request for {0}.".format(caller_label))
raise
finally:
if os.path.isfile(cookie_file):
os.remove(cookie_file)
# empty quotes evaluates to false
if curl_stderr:
error_msg = curl_stderr
time_millis = time.time() - start_time
# empty quotes evaluates to false
if curl_stdout:
if return_only_http_code:
return (int(curl_stdout), error_msg, time_millis)
else:
return (curl_stdout, error_msg, time_millis)
logger.debug("The curl response for %s is empty; standard error = %s",
caller_label, str(error_msg))
return ("", error_msg, time_millis)
def execute(parameters=None, host_name=None):
"""
Returns a tuple containing the result code and a pre-formatted result label
Keyword arguments:
parameters (dictionary): a mapping of parameter key to value
host_name (string): the name of this host where the alert is running
"""
if parameters is None:
return (RESULT_CODE_UNKNOWN,
['There were no parameters supplied to the script.'])
if not OOZIE_URL_KEY in parameters:
return (RESULT_CODE_UNKNOWN,
['The Oozie URL is a required parameter.'])
# use localhost on Windows, 0.0.0.0 on others; 0.0.0.0 means bind to all
# interfaces, which doesn't work on Windows
localhost_address = 'localhost' if OSCheck.get_os_family(
) == OSConst.WINSRV_FAMILY else '0.0.0.0'
oozie_url = parameters[OOZIE_URL_KEY]
oozie_url = oozie_url.replace(
urlparse(oozie_url).hostname, localhost_address)
security_enabled = False
if SECURITY_ENABLED in parameters:
security_enabled = str(parameters[SECURITY_ENABLED]).upper() == 'TRUE'
command = format(
"source /etc/oozie/conf/oozie-env.sh ; oozie admin -oozie {oozie_url} -status"
)
try:
# kinit if security is enabled so that oozie-env.sh can make the web request
kerberos_env = None
if security_enabled:
if OOZIE_KEYTAB in parameters and OOZIE_PRINCIPAL in parameters:
oozie_keytab = parameters[OOZIE_KEYTAB]
oozie_principal = parameters[OOZIE_PRINCIPAL]
# substitute _HOST in kerberos principal with actual fqdn
oozie_principal = oozie_principal.replace('_HOST', host_name)
else:
return (RESULT_CODE_UNKNOWN, [
'The Oozie keytab and principal are required parameters when security is enabled.'
])
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(
env.tmp_dir, sep, getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
klist_path_local = get_klist_path()
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command)
if return_code != 0:
kinit_path_local = get_kinit_path()
kinit_command = format(
"{kinit_path_local} -l 5m -kt {oozie_keytab} {oozie_principal}; "
)
# kinit
Execute(kinit_command, environment=kerberos_env)
# execute the command
Execute(command, environment=kerberos_env)
return (RESULT_CODE_OK,
["Successful connection to {0}".format(oozie_url)])
except Exception, ex:
return (RESULT_CODE_CRITICAL, [str(ex)])
def execute(parameters=None, host_name=None):
"""
Returns a tuple containing the result code and a pre-formatted result label
Keyword arguments:
parameters (dictionary): a mapping of parameter key to value
host_name (string): the name of this host where the alert is running
"""
if parameters is None:
return (RESULT_CODE_UNKNOWN, ['There were no parameters supplied to the script.'])
if not OOZIE_URL_KEY in parameters:
return (RESULT_CODE_UNKNOWN, ['The Oozie URL is a required parameter.'])
# use localhost on Windows, 0.0.0.0 on others; 0.0.0.0 means bind to all
# interfaces, which doesn't work on Windows
localhost_address = 'localhost' if OSCheck.get_os_family() == OSConst.WINSRV_FAMILY else '0.0.0.0'
oozie_url = parameters[OOZIE_URL_KEY]
oozie_url = oozie_url.replace(urlparse(oozie_url).hostname,localhost_address)
security_enabled = False
if SECURITY_ENABLED in parameters:
security_enabled = str(parameters[SECURITY_ENABLED]).upper() == 'TRUE'
command = format("source /etc/oozie/conf/oozie-env.sh ; oozie admin -oozie {oozie_url} -status")
try:
# kinit if security is enabled so that oozie-env.sh can make the web request
kerberos_env = None
if security_enabled:
if OOZIE_KEYTAB in parameters and OOZIE_PRINCIPAL in parameters:
oozie_keytab = parameters[OOZIE_KEYTAB]
oozie_principal = parameters[OOZIE_PRINCIPAL]
# substitute _HOST in kerberos principal with actual fqdn
oozie_principal = oozie_principal.replace('_HOST', host_name)
else:
return (RESULT_CODE_UNKNOWN, ['The Oozie keytab and principal are required parameters when security is enabled.'])
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl
env = Environment.get_instance()
ccache_file = "{0}{1}oozie_alert_cc_{2}".format(env.tmp_dir, sep, getpid())
kerberos_env = {'KRB5CCNAME': ccache_file}
klist_path_local = get_klist_path()
klist_command = format("{klist_path_local} -s {ccache_file}")
# Determine if we need to kinit by testing to see if the relevant cache exists and has
# non-expired tickets. Tickets are marked to expire after 5 minutes to help reduce the number
# it kinits we do but recover quickly when keytabs are regenerated
return_code, _ = call(klist_command)
if return_code != 0:
kinit_path_local = get_kinit_path()
kinit_command = format("{kinit_path_local} -l 5m -kt {oozie_keytab} {oozie_principal}; ")
# kinit
Execute(kinit_command, environment=kerberos_env)
# execute the command
Execute(command, environment=kerberos_env)
return (RESULT_CODE_OK, ["Successful connection to {0}".format(oozie_url)])
except Exception, ex:
return (RESULT_CODE_CRITICAL, [str(ex)])
def _make_web_request(self, url):
"""
Makes an http(s) request to a web resource and returns the http code. If
there was an error making the request, return 0 for the status code.
"""
error_msg = None
try:
response_code = 0
kerberos_keytab = None
kerberos_principal = None
if self.uri_property_keys.kerberos_principal is not None:
kerberos_principal = self._get_configuration_value(
self.uri_property_keys.kerberos_principal)
if kerberos_principal is not None:
# substitute _HOST in kerberos principal with actual fqdn
kerberos_principal = kerberos_principal.replace('_HOST', self.host_name)
if self.uri_property_keys.kerberos_keytab is not None:
kerberos_keytab = self._get_configuration_value(self.uri_property_keys.kerberos_keytab)
if kerberos_principal is not None and kerberos_keytab is not None:
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl. Use the md5 hash of the combination of the principal and keytab file
# to generate a (relatively) unique cache filename so that we can use it as needed.
tmp_dir = self.config.get('agent', 'tmp_dir')
if tmp_dir is None:
tmp_dir = gettempdir()
ccache_file_name = _md5("{0}|{1}".format(kerberos_principal, kerberos_keytab)).hexdigest()
ccache_file_path = "{0}{1}web_alert_cc_{2}".format(tmp_dir, os.sep, ccache_file_name)
kerberos_env = {'KRB5CCNAME': ccache_file_path}
# If there are no tickets in the cache or they are expired, perform a kinit, else use what
# is in the cache
klist_path_local = get_klist_path()
if os.system("{0} -s {1}".format(klist_path_local, ccache_file_path)) != 0:
kinit_path_local = get_kinit_path()
logger.debug("[Alert][{0}] Enabling Kerberos authentication via GSSAPI using ccache at {1}.".format(
self.get_name(), ccache_file_path))
os.system("{0} -l 5m -c {1} -kt {2} {3} > /dev/null".format(
kinit_path_local, ccache_file_path, kerberos_keytab,
kerberos_principal))
else:
logger.debug("[Alert][{0}] Kerberos authentication via GSSAPI already enabled using ccache at {1}.".format(
self.get_name(), ccache_file_path))
# check if cookies dir exists, if not then create it
tmp_dir = self.config.get('agent', 'tmp_dir')
cookies_dir = os.path.join(tmp_dir, "cookies")
if not os.path.exists(cookies_dir):
os.makedirs(cookies_dir)
cookie_file_name = str(uuid.uuid4())
cookie_file = os.path.join(cookies_dir, cookie_file_name)
start_time = time.time()
try:
curl = subprocess.Popen(['curl', '--negotiate', '-u', ':', '-b', cookie_file, '-c', cookie_file, '-sL', '-w',
'%{http_code}', url, '--connect-timeout', CURL_CONNECTION_TIMEOUT,
'-o', '/dev/null'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=kerberos_env)
curl_stdout, curl_stderr = curl.communicate()
finally:
if os.path.isfile(cookie_file):
os.remove(cookie_file)
# empty quotes evaluates to false
if curl_stderr:
error_msg = curl_stderr
# empty quotes evaluates to false
if curl_stdout:
response_code = int(curl_stdout)
time_millis = time.time() - start_time
else:
# kerberos is not involved; use urllib2
response_code, time_millis, error_msg = self._make_web_request_urllib(url)
return WebResponse(status_code=response_code, time_millis=time_millis,
error_msg=error_msg)
except Exception, exception:
if logger.isEnabledFor(logging.DEBUG):
logger.exception("[Alert][{0}] Unable to make a web request.".format(self.get_name()))
return WebResponse(status_code=0, time_millis=0, error_msg=str(exception))
def _make_web_request(self, url):
"""
Makes an http(s) request to a web resource and returns the http code. If
there was an error making the request, return 0 for the status code.
"""
error_msg = None
try:
response_code = 0
kerberos_keytab = None
kerberos_principal = None
if self.uri_property_keys.kerberos_principal is not None:
kerberos_principal = self._get_configuration_value(self.uri_property_keys.kerberos_principal)
if kerberos_principal is not None:
# substitute _HOST in kerberos principal with actual fqdn
kerberos_principal = kerberos_principal.replace("_HOST", self.host_name)
if self.uri_property_keys.kerberos_keytab is not None:
kerberos_keytab = self._get_configuration_value(self.uri_property_keys.kerberos_keytab)
if kerberos_principal is not None and kerberos_keytab is not None:
# Create the kerberos credentials cache (ccache) file and set it in the environment to use
# when executing curl. Use the md5 hash of the combination of the principal and keytab file
# to generate a (relatively) unique cache filename so that we can use it as needed.
tmp_dir = self.config.get("agent", "tmp_dir")
if tmp_dir is None:
tmp_dir = gettempdir()
ccache_file_name = _md5("{0}|{1}".format(kerberos_principal, kerberos_keytab)).hexdigest()
ccache_file_path = "{0}{1}web_alert_cc_{2}".format(tmp_dir, os.sep, ccache_file_name)
kerberos_env = {"KRB5CCNAME": ccache_file_path}
# If there are no tickets in the cache or they are expired, perform a kinit, else use what
# is in the cache
klist_path_local = get_klist_path()
if os.system("{0} -s {1}".format(klist_path_local, ccache_file_path)) != 0:
kinit_path_local = get_kinit_path()
logger.debug(
"[Alert][{0}] Enabling Kerberos authentication via GSSAPI using ccache at {1}.".format(
self.get_name(), ccache_file_path
)
)
os.system(
"{0} -l 5m -c {1} -kt {2} {3} > /dev/null".format(
kinit_path_local, ccache_file_path, kerberos_keytab, kerberos_principal
)
)
else:
logger.debug(
"[Alert][{0}] Kerberos authentication via GSSAPI already enabled using ccache at {1}.".format(
self.get_name(), ccache_file_path
)
)
# check if cookies dir exists, if not then create it
tmp_dir = self.config.get("agent", "tmp_dir")
cookies_dir = os.path.join(tmp_dir, "cookies")
if not os.path.exists(cookies_dir):
os.makedirs(cookies_dir)
cookie_file_name = str(uuid.uuid4())
cookie_file = os.path.join(cookies_dir, cookie_file_name)
start_time = time.time()
try:
curl = subprocess.Popen(
[
"curl",
"--negotiate",
"-u",
":",
"-b",
cookie_file,
"-c",
cookie_file,
"-sL",
"-w",
"%{http_code}",
url,
"--connect-timeout",
CURL_CONNECTION_TIMEOUT,
"-o",
"/dev/null",
],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=kerberos_env,
)
curl_stdout, curl_stderr = curl.communicate()
finally:
if os.path.isfile(cookie_file):
os.remove(cookie_file)
# empty quotes evaluates to false
if curl_stderr:
error_msg = curl_stderr
# empty quotes evaluates to false
if curl_stdout:
response_code = int(curl_stdout)
time_millis = time.time() - start_time
else:
# kerberos is not involved; use urllib2
response_code, time_millis, error_msg = self._make_web_request_urllib(url)
return WebResponse(status_code=response_code, time_millis=time_millis, error_msg=error_msg)
except Exception, exception:
if logger.isEnabledFor(logging.DEBUG):
logger.exception("[Alert][{0}] Unable to make a web request.".format(self.get_name()))
return WebResponse(status_code=0, time_millis=0, error_msg=str(exception))