starlingx/integ
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Merge "Add NTP server monitoring as a collectd plugin"

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Zuul 2019-01-10 15:11:53 +00:00 committed by Gerrit Code Review
commit 1ac4479e80
5 changed files with 716 additions and 135 deletions
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2
monitoring/collectd-extensions/centos/build_srpm.data
View File

@ -16,4 +16,4 @@ COPY_LIST="$PKG_BASE/src/LICENSE \
$PKG_BASE/src/example.py \
$PKG_BASE/src/example.conf"
TIS_PATCH_VER=4
TIS_PATCH_VER=5

3
monitoring/collectd-extensions/src/fm_notifier.py
View File

@ -870,6 +870,9 @@ def _database_setup(database):
(PLUGIN, database, retention))
collectd.info("%s influxdb:%s is setup" % (PLUGIN, database))
PluginObject.database_setup = True
else:
collectd.error("%s influxdb:%s setup %s" %
(PLUGIN, database, error_str))
def _clear_alarm_for_missing_filesystems():

8
monitoring/collectd-extensions/src/ntpq.conf
View File

@ -1,16 +1,12 @@
#<Plugin "ntpq">
# Interval 60
#</Plugin>
<Plugin "threshold">
<Plugin "ntpq">
<Type "absolute">
Instance "state"
Instance "reachable"
Persist true
PersistOK true
WarningMin 1
FailureMin 0
# Hits 2
Hits 2
Invert false
</Type>
</Plugin>

831
monitoring/collectd-extensions/src/ntpq.py
View File

@ -1,9 +1,58 @@
# Copyright (c) 2018 Wind River Systems, Inc.
############################################################################
# Copyright (c) 2018-2019 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#
#############################################################################
#
# This is the NTP connectivity monitor plugin for collectd.
#
# This plugin uses the industry standard ntpq exec to query NTP attributes.
#
# This plugin executes 'ntpq -np' to determined which provisioned servers
# are reachable. The ntpq output includes Tally Code. The tally Code is
# represented by the first character in each server's line item.
#
# The only ntpq output looked at by this plugin are the Tally Codes and
# associated IPs.
#
# Tally Code Summary:
#
# A server is considered reachable only when the Tally Code is a * or a +.
# A server is considered unreachable if the Tally Code is a ' ' (space)
# A server with a '*' Tally Code is the 'selected' server.
#
# Here is an example of the ntpq command output
#
# remote refid st t when poll reach delay offset jitter
# =============================================================================
# +192.168.204.104 206.108.0.133 2 u 203 1024 377 0.226 -3.443 1.137
# +97.107.129.217 200.98.196.212 2 u 904 1024 377 21.677 5.577 0.624
# 192.95.27.155 24.150.203.150 2 u 226 1024 377 15.867 0.381 1.124
# -97.107.129.217 200.98.196.212 2 u 904 1024 377 21.677 5.577 0.624
# *182.95.27.155 24.150.203.150 2 u 226 1024 377 15.867 0.381 1.124
#
# The local controller node is not to be considered a reachable server and is
# never alarmed if it is not reachable.
#
# Normal running modes with no alarms include
#
# 0 - All NTP servers are reachable and one is selected
# 1 - No NTP servers are provisioned
#
# Failure modes that warrant alarms include
#
# 2 - None of the NTP servers are reachable - major alarm
# 3 - Some NTP servers reachable and one is selected - server IP minor alarm
# 4 - Some NTP servers reachable but none is selected - major alarm
#
# None of these failures result in a host being degraded.
#
# This script will only be run on the controller nodes.
#
# This script logs to daemon.log with the 'collectd' process label
#
###############################################################################
import os
import subprocess
@ -16,149 +65,106 @@ import tsconfig.tsconfig as tsc
api = fm_api.FaultAPIs()
PLUGIN = 'NTP query plugin'
PLUGIN_SCRIPT = '/etc/rmonfiles.d/query_ntp_servers.sh'
PLUGIN_RESULT = '/tmp/ntpq_server_info'
# static variables
ALARM_ID__NTPQ = "100.114"
PLUGIN_INTERVAL = 600 # audit interval in secs
PLUGIN_CONF = '/etc/ntp.conf'
PLUGIN_EXEC = '/usr/sbin/ntpq'
PLUGIN_EXEC_OPTIONS = '-pn'
PLUGIN_ALARMID = "100.114"
# define a class here that will persist over read calls
class NtpqObject:
hostname = ''
base_eid = ''
severity = 'clear'
# static variables set in init
hostname = '' # the name of this host
base_eid = '' # the eid for the major alarm
config_complete = False # set to true once config is complete
alarm_raised = False # True when the major alarm is asserted
server_list_conf = [] # list of servers in the /etc/ntp.conf file
server_list_ntpq = [] # list of servers in the ntpq -np output
unreachable_servers = [] # list of unreachable servers
reachable_servers = [] # list of reachable servers
selected_server = 'None' # the ip address of the selected server
selected_server_save = 'None' # the last selected server ; note change
# variables used to raise alarms to FM
suppression = True
service_affecting = False
status = 0
last_result = ''
this_result = ''
id = ALARM_ID__NTPQ
name = "NTP"
alarm_type = fm_constants.FM_ALARM_TYPE_1
cause = fm_constants.ALARM_PROBABLE_CAUSE_UNKNOWN
repair = "Monitor and if condition persists, "
repair += "contact next level of support."
# This plugin's class object - persists over read calls
obj = NtpqObject()
def is_uuid_like(val):
"""Returns validation of a value as a UUID."""
try:
return str(uuid.UUID(val)) == val
except (TypeError, ValueError, AttributeError):
return False
###############################################################################
#
# Name : _add_unreachable_server
#
# Description: This private interface is used to add an ip to the
# unreachable servers list.
#
# Parameters : IP address
#
###############################################################################
def _add_unreachable_server(ip=None):
""" Add ip to unreachable_servers list """
# The config function - called once on collectd process startup
def config_func(config):
"""
Configure the plugin
"""
if ip:
if ip not in obj.unreachable_servers:
collectd.debug("%s adding '%s' to unreachable servers list: %s" %
(PLUGIN, ip, obj.unreachable_servers))
collectd.debug('%s config function' % PLUGIN)
return 0
obj.unreachable_servers.append(ip)
# The init function - called once on collectd process startup
def init_func():
# ntp query is for controllers only
if tsc.nodetype != 'controller':
return 0
# get current hostname
obj.hostname = os.uname()[1]
obj.base_eid = 'host=' + obj.hostname + '.ntp'
collectd.info("%s on %s with entity id '%s'" % PLUGIN, obj.hostname, obj.base_eid)
return 0
# The sample read function - called on every audit interval
def read_func():
# ntp query is for controllers only
if tsc.nodetype != 'controller':
return 0
result = int(0)
# Query ntp
try:
result = os.system(PLUGIN_SCRIPT)
except Exception as e:
collectd.error("%s Could not run '%s' (%s)" %
(PLUGIN, e))
return 0
obj.status = int(result)/0x100
collectd.info("%s Query Result: %s" % (PLUGIN, obj.status))
if os.path.exists(PLUGIN_RESULT) is False:
collectd.error("%s produced no result file '%s'" %
(PLUGIN, PLUGIN_RESULT))
return 0
# read the query result file.
# format is in the PLUGIN_SCRIPT file.
# This code only wants the second line.
# It contains list of unreachable ntp servers that need alarm management.
count = 0
with open(PLUGIN_RESULT, 'r') as infile:
for line in infile:
count += 1
collectd.info("%s Query Result: %s" % (PLUGIN, line))
if count == 0:
collectd.error("%s produced empty result file '%s'" %
(PLUGIN, PLUGIN_RESULT))
return 0
sample = 1
# Dispatch usage value to collectd
val = collectd.Values(host=obj.hostname)
val.plugin = 'ntpq'
val.plugin_instance = 'some.ntp.server.ip'
val.type = 'absolute'
val.type_instance = 'state'
val.dispatch(values=[sample])
severity = 'clear'
obj.severity = 'clear'
# if there is no severity change then consider exiting
if obj.severity == severity:
# unless the current severity is 'minor'
if severity == 'minor':
# TODO: check to see if the failing IP address is changed
collectd.info("%s NEED TO CHECK IP ADDRESSES" % (PLUGIN))
collectd.info("%s added '%s' to unreachable servers list: %s" %
(PLUGIN, ip, obj.unreachable_servers))
else:
return 0
collectd.debug("%s ip '%s' already in unreachable_servers list" %
(PLUGIN, ip))
else:
collectd.error("%s _add_unreachable_server called with no IP" % PLUGIN)
# if current severity is clear but previous severity is not then
# prepare to clear the alarms
if severity == 'clear':
_alarm_state = fm_constants.FM_ALARM_STATE_CLEAR
# TODO: loop over all raises alarms and clear them
collectd.info("%s NEED CLEAR ALL ALARMS" % (PLUGIN))
if api.clear_fault(obj.id, obj.base_eid) is False:
collectd.error("%s %s:%s clear_fault failed" %
(PLUGIN, obj.id, obj.base_eid))
return 0
###############################################################################
#
# Name : _raise_alarm
#
# Description: This private interface is used to raise NTP alarms.
#
# Parameters : Optional IP address
#
# If called with no or empty IP then a generic major alarm is raised.
# If called with an IP then an IP specific minor alarm is raised.
#
# Returns : Error indication.
#
# True : is error. FM call failed to set the
# alarm and needs to be retried.
#
# False: no error. FM call succeeds
#
###############################################################################
def _raise_alarm(ip=None):
""" Assert an NTP alarm """
if not ip:
# Don't re-raise the alarm if its already raised
if obj.alarm_raised is True:
return False
elif severity == 'major':
reason = "NTP configuration does not contain any valid "
reason += "or reachable NTP servers."
eid = obj.base_eid
fm_severity = fm_constants.FM_ALARM_SEVERITY_MAJOR
else:
# TODO: There can be up to 3 inacessable servers
ip = 'some.server.ip.addr'
reason = "NTP address "
reason += ip
reason += " is not a valid or a reachable NTP server."
@ -166,7 +172,7 @@ def read_func():
fm_severity = fm_constants.FM_ALARM_SEVERITY_MINOR
fault = fm_api.Fault(
alarm_id=obj.id,
alarm_id=PLUGIN_ALARMID,
alarm_state=fm_constants.FM_ALARM_STATE_SET,
entity_type_id=fm_constants.FM_ENTITY_TYPE_HOST,
entity_instance_id=eid,
@ -179,12 +185,593 @@ def read_func():
suppression=obj.suppression)
alarm_uuid = api.set_fault(fault)
if is_uuid_like(alarm_uuid) is False:
if _is_uuid_like(alarm_uuid) is False:
# Don't _add_unreachable_server list if the fm call failed.
# That way it will be retried at a later time.
collectd.error("%s %s:%s set_fault failed:%s" %
(PLUGIN, obj.id, eid, alarm_uuid))
(PLUGIN, PLUGIN_ALARMID, eid, alarm_uuid))
return True
else:
collectd.info("%s raised alarm %s:%s" % (PLUGIN, PLUGIN_ALARMID, eid))
if ip:
_add_unreachable_server(ip)
else:
obj.alarm_raised = True
return False
###############################################################################
#
# Name : _clear_base_alarm
#
# Description: This private interface is used to clear the NTP base alarm.
#
# Parameters : None
#
# Returns : Error indication.
#
# True : is error. FM call failed to clear the
# alarm and needs to be retried.
#
# False: no error. FM call succeeds
#
###############################################################################
def _clear_base_alarm():
""" Clear the NTP base alarm """
if api.get_fault(PLUGIN_ALARMID, obj.base_eid) is not None:
if api.clear_fault(PLUGIN_ALARMID, obj.base_eid) is False:
collectd.error("%s failed to clear alarm %s:%s" %
(PLUGIN, PLUGIN_ALARMID, obj.base_eid))
return True
else:
collectd.info("%s cleared alarm %s:%s" %
(PLUGIN, PLUGIN_ALARMID, obj.base_eid))
obj.alarm_raised = False
return False
###############################################################################
#
# Name : _remove_ip_from_unreachable_list
#
# Description: This private interface is used to remove the specified IP
# from the unreachable servers list and clear its alarm if raised.
#
# Parameters : IP address
#
# Returns : Error indication.
#
# True : is error. FM call failed to clear the
# alarm and needs to be retried.
#
# False: no error. FM call succeeds
#
###############################################################################
def _remove_ip_from_unreachable_list(ip):
"""
Remove an IP address from the unreachable list and
clear any NTP alarm that might be asserted for it.
"""
# remove from unreachable list if its there
if ip and ip in obj.unreachable_servers:
eid = obj.base_eid + '=' + ip
collectd.debug("%s trying to clear alarm %s" % (PLUGIN, eid))
# clear the alarm if its asserted
if api.get_fault(PLUGIN_ALARMID, eid) is not None:
if api.clear_fault(PLUGIN_ALARMID, eid) is True:
collectd.info("%s cleared %s:%s alarm" %
(PLUGIN, PLUGIN_ALARMID, eid))
obj.unreachable_servers.remove(ip)
else:
# Handle clear failure by not removing the IP from the list.
# It will retry on next audit.
# Error should only occur if FM is not running at the time
# this get or clear is called
collectd.error("%s failed alarm clear %s:%s" %
(PLUGIN, PLUGIN_ALARMID, eid))
return True
else:
obj.unreachable_servers.remove(ip)
collectd.info("%s alarm %s not raised" % (PLUGIN, eid))
return False
###############################################################################
#
# Name : _add_ip_to_ntpq_server_list
#
# Description: This private interface is used to create a list if servers
# found in the ntpq output.
#
# This list is used to detect and handle servers that might come
# and go between readings that might otherwise result in stuck
# alarms.
#
# Parameters : IP address
#
# Returns : nothing
#
###############################################################################
def _add_ip_to_ntpq_server_list(ip):
""" Add this IP to the list of servers that ntpq reports against. """
if ip not in obj.server_list_ntpq:
obj.server_list_ntpq.append(ip)
##############################################################################
#
# Name : _cleanup_stale_servers
#
# Description: This private interface walks through each server tracking list
# removing any that it finds that are not in the ntpq server list.
#
# Alarms are cleared as needed to avoid stale alarms
#
# Parameters : None
#
# Returns : nothing
#
###############################################################################
def _cleanup_stale_servers():
""" Cleanup the server IP tracking lists """
collectd.debug("%s CLEANUP REACHABLE: %s %s" %
(PLUGIN, obj.server_list_ntpq, obj.reachable_servers))
for ip in obj.reachable_servers:
if ip not in obj.server_list_ntpq:
collectd.info("%s removing missing '%s' server from reachable "
"server list" % (PLUGIN, ip))
obj.reachable_servers.remove(ip)
collectd.debug("%s CLEANUP UNREACHABLE: %s %s" %
(PLUGIN, obj.server_list_ntpq, obj.unreachable_servers))
for ip in obj.unreachable_servers:
if ip not in obj.server_list_ntpq:
collectd.info("%s removing missing '%s' server from unreachable "
"server list" % (PLUGIN, ip))
_remove_ip_from_unreachable_list(ip)
###############################################################################
#
# Name : _get_ntp_servers
#
# Description: This private interface reads the list of ntp servers from the
# ntp.conf file
#
# Parameters : None
#
# Returns : nothing
#
# Updates : server_list_conf
#
###############################################################################
def _get_ntp_servers():
""" Read the provisioned servers from the ntp conf file """
with open(PLUGIN_CONF, 'r') as infile:
for line in infile:
if line.startswith('server '):
ip = line.rstrip().split(' ')[1]
if ip not in obj.server_list_conf:
obj.server_list_conf.append(ip)
if len(obj.server_list_conf):
collectd.info("%s server list: %s" %
(PLUGIN, obj.server_list_conf))
else:
##################################################################
#
# Handle NTP_NOT_PROVISIONED (1) case
#
# There is no alarming for this case.
# Clear any that may have been raised.
#
##################################################################
collectd.info("%s No NTP servers are provisioned" % PLUGIN)
# clear all alarms
if obj.alarm_raised:
_clear_base_alarm()
if obj.unreachable_servers:
for ip in obj.unreachable_servers:
_remove_ip_from_unreachable_list(ip)
###############################################################################
#
# Name : is_controller
#
# Description: This private interface returns a True if the specified ip is
# associated with a local controller.
#
# Parameters : IP address
#
# Returns : True or False
#
###############################################################################
def _is_controller(ip):
""" Returns True if this IP corresponds to one of the controllers """
collectd.debug("%s check if '%s' is a controller ip" % (PLUGIN, ip))
with open('/etc/hosts', 'r') as infile:
for line in infile:
# skip over file comment lines prefixed with '#'
if line[0] == '#':
continue
# line format is 'ip' 'name' ....
split_line = line.split()
if len(split_line) >= 2:
# look for exact match ip that contains controller in its name
if split_line[0] == ip and 'controller' in line:
collectd.debug("%s %s is a controller" % (PLUGIN, ip))
return True
return False
###############################################################################
#
# Name : is_uuid_like
#
# Description: This private interface returns a True if the specified value is
# a valid uuid.
#
# Parameters : val is a uuid string
#
# Returns : True or False
#
###############################################################################
def _is_uuid_like(val):
"""Returns validation of a value as a UUID."""
try:
return str(uuid.UUID(val)) == val
except (TypeError, ValueError, AttributeError):
return False
###############################################################################
#
# Name : config_func
#
# Description: The configuration interface this plugin publishes to collectd.
#
# collectd calls this interface one time on its process startup
# when it loads this plugin.
#
# There is currently no specific configuration options to parse
# for this plugin.
#
# Parameters : collectd config object
#
# Returns : zero
#
###############################################################################
def config_func(config):
""" Configure the plugin """
collectd.debug('%s config function' % PLUGIN)
return 0
###############################################################################
#
# Name : init_func
#
# Description: The initialization interface this plugin publishes to collectd.
#
# collectd calls this interface one time on its process startup
# when it loads this plugin.
#
# 1. get hostname
# 2. build base entity id for the NTP alarm
# 3. query FM for existing NTP alarms
# - base alarm is maintained and state loaded if it exists
# - ntp ip minor alalrms are cleared on init. This is done to
# auto correct ntp server IP address changes over process
# restart ; avoid stuck alarms.
#
# Parameters : None
#
# Returns : zero
#
###############################################################################
def init_func():
# ntp query is for controllers only
if tsc.nodetype != 'controller':
return 0
# TODO: clear the object alarm state
# do nothing till config is complete.
# init_func will be called again by read_func once config is complete.
if os.path.exists(tsc.VOLATILE_CONTROLLER_CONFIG_COMPLETE) is False:
return 0
# get current hostname
obj.hostname = os.uname()[1]
if not obj.hostname:
collectd.error("%s failed to get hostname" % PLUGIN)
return 1
obj.base_eid = 'host=' + obj.hostname + '.ntp'
collectd.debug("%s on %s with entity id '%s'" %
(PLUGIN, obj.hostname, obj.base_eid))
# get a list of provisioned ntp servers
_get_ntp_servers()
# manage existing alarms.
alarms = api.get_faults_by_id(PLUGIN_ALARMID)
if alarms:
for alarm in alarms:
eid = alarm.entity_instance_id
# ignore alarms not for this host
if obj.hostname not in eid:
continue
# maintain only the base alarm.
if alarm.entity_instance_id != obj.base_eid:
# clear any ntp server specific alarms over process restart
# this is done to avoid the potential for stuck ntp ip alarms
collectd.info("%s clearing found startup alarm '%s'" %
(PLUGIN, alarm.entity_instance_id))
rc = api.clear_fault(PLUGIN_ALARMID, alarm.entity_instance_id)
if rc is False:
# if we can't clear the alarm now then lets load it and
# manage it like it just happened. When the server starts
# responding then the alarm will get cleared at that time.
collectd.error("%s failed to clear alarm %s:%s" %
(PLUGIN, PLUGIN_ALARMID,
alarm.entity_instance_id))
ip = alarm.entity_instance_id.split('=')[2]
if ip and ip not in obj.unreachable_servers:
_add_unreachable_server(ip)
else:
obj.alarm_raised = True
collectd.info("%s found alarm %s:%s" %
(PLUGIN,
PLUGIN_ALARMID,
alarm.entity_instance_id))
# ensure the base alarm is cleared if there are no
# provisioned servers.
if not obj.server_list_conf:
_clear_base_alarm()
else:
collectd.info("%s no major startup alarms found" % PLUGIN)
obj.config_complete = True
return 0
###############################################################################
#
# Name : read_func
#
# Description: The sample read interface this plugin publishes to collectd.
#
# collectd calls this interface every audit interval.
#
# Runs ntpq -np to query NTP status and manages alarms based on
# the result.
#
# See file header (above) for more specific behavioral detail.
#
# Should only run on a controller ; both
#
# Parameters : None
#
# Returns : zero or non-zero on significant error
#
###############################################################################
def read_func():
# ntp query is for controllers only
if tsc.nodetype != 'controller':
return 0
if obj.config_complete is False:
if os.path.exists(tsc.VOLATILE_CONTROLLER_CONFIG_COMPLETE) is False:
return 0
else:
collectd.info("%s controller config complete ; "
"invoking init_func" % PLUGIN)
if init_func() != 0:
return 1
# get a list if provisioned ntp servers
_get_ntp_servers()
# nothing to do while there are no provisioned NTP servers
if len(obj.server_list_conf) == 0:
return 0
# Do NTP Query
data = subprocess.check_output([PLUGIN_EXEC, PLUGIN_EXEC_OPTIONS])
# Keep this FIT test code but make it commented out for security
#
# if os.path.exists('/var/run/fit/ntpq_data'):
# data = ''
# collectd.info("%s using ntpq FIT data" % PLUGIN)
# with open('/var/run/fit/ntpq_data', 'r') as infile:
# for line in infile:
# data += line
if not data:
collectd.error("%s no data from query" % PLUGIN)
return 1
# Get the ntp query output into a list of lines
obj.ntpq = data.split('\n')
# keep track of changes ; only log on changes
reachable_list_changed = False
unreachable_list_changed = False
# Manage the selected server name
#
# save the old value so we can print a log if the selected server changes
if obj.selected_server:
obj.selected_server_save = obj.selected_server
# always assume no selected server ; till its learned
obj.selected_server = ''
# start with a fresh empty list for this new run to populate
obj.server_list_ntpq = []
# Loop through the ntpq output.
# Ignore the first 2 lines ; just header data.
for i in range(2, len(obj.ntpq)):
# ignore empty or lines that are not long enough
if len(obj.ntpq[i]) < 10:
continue
# log the ntpq output ; minus the 2 lines of header
collectd.info("NTPQ: %s" % obj.ntpq[i])
# Unreachable servers are ones whose line start with a space
ip = ''
if obj.ntpq[i][0] == ' ':
# get the ip address
# example format of line:['', '132.163.4.102', '', '', '.INIT.',
# get ip from index [1] of the list
unreachable = obj.ntpq[i].split(' ')[1]
if unreachable:
# check to see if its a controller ip
# we skip over controller ips
if _is_controller(unreachable) is False:
_add_ip_to_ntpq_server_list(unreachable)
if unreachable not in obj.unreachable_servers:
if _raise_alarm(unreachable) is False:
unreachable_list_changed = True
# if the FM call to raise the alarm worked then
# add this ip to the unreachable list if its not
# already in it
_add_unreachable_server(unreachable)
# Reachable servers are ones whose line start with a '+'
elif obj.ntpq[i][0] == '+':
# remove the '+' and get the ip
ip = obj.ntpq[i].split(' ')[0][1:]
elif obj.ntpq[i][0] == '*':
# remove the '+' and get the ip
ip = obj.ntpq[i].split(' ')[0][1:]
if ip:
if _is_controller(ip) is False:
if obj.selected_server:
# done update the selected server if more selections
# are found. go with the first one found.
collectd.info("%s additional selected server found"
" '%s'; current selection is '%s'" %
(PLUGIN, ip, obj.selected_server))
else:
# update the selected server list
obj.selected_server = ip
collectd.debug("%s selected server is '%s'" %
(PLUGIN, obj.selected_server))
else:
collectd.debug("%s local controller '%s' marked "
"as selected server ; ignoring" %
(PLUGIN, ip))
# anything else is unreachable
else:
unreachable = obj.ntpq[i][1:].split(' ')[0]
if _is_controller(unreachable) is False:
_add_ip_to_ntpq_server_list(unreachable)
if unreachable not in obj.unreachable_servers:
if _raise_alarm(unreachable) is False:
unreachable_list_changed = True
# if the FM call to raise the alarm worked then
# add this ip to the unreachable list if its not
# already in it
_add_unreachable_server(unreachable)
if ip:
# if the ip is valid then manage it
if _is_controller(ip) is False:
_add_ip_to_ntpq_server_list(ip)
# add the ip to the reachable servers list
# if its not already there
if ip not in obj.reachable_servers:
obj.reachable_servers.append(ip)
reachable_list_changed = True
# make sure this IP is no longer in the unreachable
# list and that alarms for it are cleared
_remove_ip_from_unreachable_list(ip)
_cleanup_stale_servers()
if obj.selected_server:
if obj.selected_server != obj.selected_server_save:
collectd.info("%s selected server changed from '%s' to '%s'" %
(PLUGIN,
obj.selected_server_save,
obj.selected_server))
obj.selected_server_save = obj.selected_server
if obj.alarm_raised is True:
_clear_base_alarm()
elif obj.alarm_raised is False:
collectd.error("%s no selected server" % PLUGIN)
if _raise_alarm() is False:
obj.selected_server_save = 'None'
# only log and act on changes
if reachable_list_changed is True:
if obj.reachable_servers:
collectd.info("%s reachable servers: %s" %
(PLUGIN, obj.reachable_servers))
if obj.alarm_raised is True:
if obj.selected_server and obj.reachable_servers:
_clear_base_alarm()
else:
collectd.error("%s no reachable servers" % PLUGIN)
_raise_alarm()
# only log changes
if unreachable_list_changed is True:
if obj.unreachable_servers:
collectd.info("%s unreachable servers: %s" %
(PLUGIN, obj.unreachable_servers))
else:
collectd.info("%s all servers are reachable" % PLUGIN)
# The sample published to the database is simply the number
# of reachable servers if one is selected
if not obj.selected_server:
sample = 0
else:
sample = len(obj.reachable_servers)
# Dispatch usage value to collectd
val = collectd.Values(host=obj.hostname)
val.plugin = 'ntpq'
val.type = 'absolute'
val.type_instance = 'reachable'
val.dispatch(values=[sample])
return 0
@ -192,4 +779,4 @@ def read_func():
# register the config, init and read functions
collectd.register_config(config_func)
collectd.register_init(init_func)
collectd.register_read(read_func)
collectd.register_read(read_func, interval=PLUGIN_INTERVAL)

7
monitoring/collectd-extensions/src/python_plugins.conf
View File

@ -9,12 +9,7 @@ LoadPlugin python
<Module "memory">
Path "/proc/meminfo"
</Module>
# Import "example"
# <Module "example">
# Data "1 50"
# </Module>
# Import "interface"
# Import "ntpq"
Import "ntpq"
LogTraces = true
Encoding "utf-8"
</Plugin>