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added section traefik_http_components

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Ralf Mellis 2025-05-03 18:12:28 +02:00
parent 4b69032742
commit 0f834e6121
3 changed files with 324 additions and 0 deletions
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172
agent_based/traefik_http_components.py Normal file
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#!/usr/bin/env python3
# pylint: disable=missing-module-docstring, unused-argument,
# pylint: disable=missing-function-docstring, line-too-long
from pprint import pprint
from cmk.utils import debug
# import necessary elements from API version 2
from cmk.agent_based.v2 import (
AgentSection,
CheckPlugin,
Service,
State,
Metric,
Result,
DiscoveryResult,
CheckResult,
check_levels,
)
def get_state_upper(
levels: tuple[int | float, int | float], value: int | float
) -> State:
"""returns OK/WARN/CRIT depending on the given parameters"""
warn, crit = levels
if value >= crit:
return State.CRIT
if value >= warn:
return State.WARN
return State.OK
def parse_traefik_http_components(string_table):
"""the parse function"""
parsed_data = {}
for line in string_table:
if line[0] == "routers":
parsed_data["num_routers"] = int(line[1])
parsed_data["num_routers_warn"] = int(line[2])
parsed_data["num_routers_crit"] = int(line[3])
elif line[0] == "services":
parsed_data["num_services"] = int(line[1])
parsed_data["num_services_warn"] = int(line[2])
parsed_data["num_services_crit"] = int(line[3])
elif line[0] == "middlewares":
parsed_data["num_middlewares"] = int(line[1])
parsed_data["num_middlewares_warn"] = int(line[2])
parsed_data["num_middlewares_crit"] = int(line[3])
return parsed_data
def discover_traefik_http_components(section) -> DiscoveryResult:
"""the discover function"""
yield Service()
def check_traefik_http_components(params, section) -> CheckResult:
"""the check function"""
if debug.enabled():
pprint(section)
_level_type, levels_percent_not_ok = params["levels_traefik_http_components_not_ok"]
levels_min_routers = params["levels_traefik_min_http_routers"]
levels_max_routers = params["levels_traefik_max_http_routers"]
levels_min_services = params["levels_traefik_min_http_services"]
levels_max_services = params["levels_traefik_max_http_services"]
levels_min_middlewares = params["levels_traefik_min_http_middlewares"]
levels_max_middlewares = params["levels_traefik_max_http_middlewares"]
num_routers: int = section["num_routers"]
num_routers_warn: int = section["num_routers_warn"]
num_routers_crit: int = section["num_routers_crit"]
num_services: int = section["num_services"]
num_services_warn: int = section["num_services_warn"]
num_services_crit: int = section["num_services_crit"]
num_middlewares: int = section["num_middlewares"]
num_middlewares_warn: int = section["num_middlewares_warn"]
num_middlewares_crit: int = section["num_middlewares_crit"]
num_components: int = num_routers + num_services + num_middlewares
components_warn: int = num_routers_warn + num_services_warn + num_middlewares_warn
components_crit: int = num_routers_crit + num_services_crit + num_middlewares_crit
components_percent_not_ok: float = 0.0
if num_components > 0:
components_percent_not_ok = (
(components_warn + components_crit) * 100 / num_components
)
yield Metric(
name="traefik_percent_http_components_not_ok",
value=components_percent_not_ok,
levels=levels_percent_not_ok,
)
summary: str = f"Number of HTTP routers/services/middlewares: {num_routers}/{num_services}/{num_middlewares}"
details_routers: str = (
f"Routers WARN: {num_routers_warn}\nRouters CRIT: {num_routers_crit}"
)
details_services: str = (
f"Services WARN: {num_services_warn}\nServices CRIT: {num_services_crit}"
)
details_middlewares: str = f"Middlewares WARN: {num_middlewares_warn}\nMiddlewares CRIT: {num_middlewares_crit}\n\n"
details = f"{details_routers}\n\n{details_services}\n\n{details_middlewares}"
state: State = State.OK
if components_warn > 0:
state = State.WARN
if components_crit > 0:
state = State.CRIT
yield Result(
state=state,
summary=summary,
details=details,
)
yield from check_levels(
metric_name="traefik_num_http_routers",
value=num_routers,
levels_lower=levels_min_routers,
levels_upper=levels_max_routers,
label="Number of HTTP routers",
notice_only=True,
)
yield from check_levels(
metric_name="traefik_num_http_services",
value=num_services,
levels_lower=levels_min_services,
levels_upper=levels_max_services,
label="Number of HTTP services",
notice_only=True,
)
yield from check_levels(
metric_name="traefik_num_http_middlewares",
value=num_middlewares,
levels_lower=levels_min_middlewares,
levels_upper=levels_max_middlewares,
label="Number of HTTP middlewares",
notice_only=True,
)
# create the new agent section, must begin with "agent_section_"
# and must be an instance of "AgentSection"
agent_section_traefik_http_components = AgentSection(
# "name" must exactly match the section name within the agent output
name="traefik_http_components",
# define the parse function, name is arbitrary, a good choice is to choose
# "parse_" as prefix and append the section name
parse_function=parse_traefik_http_components,
)
# create the new check plugin, must begin with "check_plugin_"
# and must be an instance of "CheckPlugin"
check_plugin_traefik_http_components = CheckPlugin(
# "name" should be the same as the corresponding section within the agent output
name="traefik_http_components",
service_name="Traefik HTTP components",
# define the discovery function, name is arbitrary, a good choice is to choose
# "discover_" as prefix and append the section name
discovery_function=discover_traefik_http_components,
# define the check function, name is arbitrary, a good choice is to choose
# "check_" as prefix and append the section name
check_function=check_traefik_http_components,
# define the default parameters
check_default_parameters={
"levels_traefik_min_http_routers": ("fixed", (10, 5)),
"levels_traefik_max_http_routers": ("fixed", (75, 100)),
"levels_traefik_min_http_services": ("fixed", (10, 5)),
"levels_traefik_max_http_services": ("fixed", (75, 100)),
"levels_traefik_min_http_middlewares": ("fixed", (5, 2)),
"levels_traefik_max_http_middlewares": ("fixed", (20, 50)),
"levels_traefik_http_components_not_ok": ("fixed", (0.5, 1.0)),
},
# connect to the ruleset where parameters can be defined
# must match the name of the ruleset exactly
check_ruleset_name="traefik_http_components",
)

30
graphing/graph_traefik.py
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@ -15,6 +15,36 @@ metric_traefik_agent_execution_time = Metric(
color=Color.DARK_ORANGE,
)
metric_traefik_num_http_routers = Metric(
name="traefik_num_http_routers",
title=Title("Number of HTTP routers"),
unit=Unit(DecimalNotation("")),
color=Color.LIGHT_GREEN,
)
metric_traefik_num_http_services = Metric(
name="traefik_num_http_services",
title=Title("Number of HTTP services"),
unit=Unit(DecimalNotation("")),
color=Color.LIGHT_BLUE,
)
metric_traefik_num_http_middlewares = Metric(
name="traefik_num_http_middlewares",
title=Title("Number of HTTP middlewares"),
unit=Unit(DecimalNotation("")),
color=Color.LIGHT_RED,
)
metric_traefik_percent_http_components_not_ok = Metric(
name="traefik_percent_http_components_not_ok",
title=Title("Percent of HTTP components in not OK state"),
unit=Unit(DecimalNotation("%")),
color=Color.DARK_RED,
)
perfometer_traefik_agent_execution_time = Perfometer(
name="traefik_agent_execution_time",
focus_range=FocusRange(Closed(0), Closed(100)),

122
rulesets/rs_traefik_http.py Normal file
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#!/user/bin/env python3
"""HTTP components parameter form for Traefik"""
from cmk.rulesets.v1 import Title, Help
from cmk.rulesets.v1.form_specs import (
DictElement,
Dictionary,
SimpleLevels,
DefaultValue,
Integer,
LevelDirection,
Float,
)
from cmk.rulesets.v1.rule_specs import CheckParameters, Topic, HostCondition
# function name should begin with an underscore to limit it's visibility
def _parameter_form():
return Dictionary(
elements={
"levels_traefik_min_http_routers": DictElement(
parameter_form=SimpleLevels(
title=Title("Levels for minimum number of HTTP routers"),
help_text=Help(
"Define the levels for the minimum number of HTTP routers"
),
form_spec_template=Integer(unit_symbol=""),
level_direction=LevelDirection.LOWER,
prefill_fixed_levels=DefaultValue(value=(10, 5)),
),
required=True,
),
"levels_traefik_max_http_routers": DictElement(
parameter_form=SimpleLevels(
title=Title("Levels for maximum number of HTTP routers"),
help_text=Help(
"Define the levels for the maximum number of HTTP routers"
),
form_spec_template=Integer(unit_symbol=""),
level_direction=LevelDirection.UPPER,
prefill_fixed_levels=DefaultValue(value=(75, 100)),
),
required=True,
),
"levels_traefik_min_http_services": DictElement(
parameter_form=SimpleLevels(
title=Title("Levels for minimum number of HTTP services"),
help_text=Help(
"Define the levels for the minimum number of HTTP services"
),
form_spec_template=Integer(unit_symbol=""),
level_direction=LevelDirection.LOWER,
prefill_fixed_levels=DefaultValue(value=(10, 5)),
),
required=True,
),
"levels_traefik_max_http_services": DictElement(
parameter_form=SimpleLevels(
title=Title("Levels for maximum number of HTTP services"),
help_text=Help(
"Define the levels for the maximum number of HTTP services"
),
form_spec_template=Integer(unit_symbol=""),
level_direction=LevelDirection.UPPER,
prefill_fixed_levels=DefaultValue(value=(75, 100)),
),
required=True,
),
"levels_traefik_min_http_middlewares": DictElement(
parameter_form=SimpleLevels(
title=Title("Levels for minimum number of HTTP middlewares"),
help_text=Help(
"Define the levels for the minimum number of HTTP middlewares"
),
form_spec_template=Integer(unit_symbol=""),
level_direction=LevelDirection.LOWER,
prefill_fixed_levels=DefaultValue(value=(5, 2)),
),
required=True,
),
"levels_traefik_max_http_middlewares": DictElement(
parameter_form=SimpleLevels(
title=Title("Levels for maximum number of HTTP middlewares"),
help_text=Help(
"Define the levels for the maximum number of HTTP middlewares"
),
form_spec_template=Integer(unit_symbol=""),
level_direction=LevelDirection.UPPER,
prefill_fixed_levels=DefaultValue(value=(20, 50)),
),
required=True,
),
"levels_traefik_http_components_not_ok": DictElement(
parameter_form=SimpleLevels(
title=Title("Levels for percentage of not OK HTTP components"),
help_text=Help(
"Define the levels for the maximum number of HTTP routers in not OK state"
),
form_spec_template=Float(unit_symbol="%"),
level_direction=LevelDirection.UPPER,
prefill_fixed_levels=DefaultValue(value=(0.5, 1.0)),
),
required=True,
),
}
)
# name must begin with "rule_spec_", should refer to the used check plugin
# must be an instance of "CheckParameters"
rule_spec_traefik_http_components = CheckParameters(
# "name" should be the same as the check plugin
name="traefik_http_components",
# the title is shown in the GUI
title=Title("Traefik HTTP componments parameters"),
# this ruleset can be found under Setup|Service monitoring rules|Applications...
topic=Topic.APPLICATIONS,
# define the name of the function which creates the GUI elements
parameter_form=_parameter_form,
condition=HostCondition(),
)