feat: add service discovery metrics

This commit is contained in:
Robert Kaussow 2021-06-15 22:14:40 +02:00
parent 9d90c3b787
commit cbb62d791b
Signed by: xoxys
GPG Key ID: 4E692A2EAECC03C0
7 changed files with 88 additions and 21 deletions

View File

@ -13,6 +13,11 @@ logging:
# supported log formats: console|json|simple # supported log formats: console|json|simple
format: console format: console
metrics:
enabled: true
address: "127.0.0.1"
port: 8000
output_file: output_file:
loop_delay: 300 loop_delay: 300
# Run pve sd in a loop and discover hosts every n seconds (as defined in loop_delay). # Run pve sd in a loop and discover hosts every n seconds (as defined in loop_delay).

View File

@ -7,17 +7,26 @@ title: Environment Variables
<!-- spellchecker-disable --> <!-- spellchecker-disable -->
{{< highlight Shell "linenos=table" >}} {{< highlight Shell "linenos=table" >}}
PROMETHEUS_PVE_SD_CONFIG_FILE= PROMETHEUS_PVE_SD_CONFIG_FILE=
# supported log levels: debug|info|warning|error|critical # supported log levels: debug|info|warning|error|critical
PROMETHEUS_PVE_SD_LOG_LEVEL=warning PROMETHEUS_PVE_SD_LOG_LEVEL=warning
# supported log formats: console|json|simple # supported log formats: console|json|simple
PROMETHEUS_PVE_SD_LOG_FORMAT=console PROMETHEUS_PVE_SD_LOG_FORMAT=console
METRICS_ENABLED=true
METRICS_ADDRESS=127.0.01
METRICS_PORT=8000
PROMETHEUS_PVE_SD_OUTPUT_FILE= PROMETHEUS_PVE_SD_OUTPUT_FILE=
PROMETHEUS_PVE_SD_LOOP_DELAY=300 PROMETHEUS_PVE_SD_LOOP_DELAY=300
# Run pve sd in a loop and discover hosts every n seconds (as defined in PROMETHEUS_PVE_SD_LOOP_DELAY). # Run pve sd in a loop and discover hosts every n seconds (as defined in PROMETHEUS_PVE_SD_LOOP_DELAY).
# Can be disabled to run disovery only once. # Can be disabled to run disovery only once.
PROMETHEUS_PVE_SD_SERVICE=true PROMETHEUS_PVE_SD_SERVICE=true
PROMETHEUS_PVE_SD_EXCLUDE_STATE= PROMETHEUS_PVE_SD_EXCLUDE_STATE=
PROMETHEUS_PVE_SD_EXCLUDE_VMID= PROMETHEUS_PVE_SD_EXCLUDE_VMID=
PROMETHEUS_PVE_SD_PVE_SERVER= PROMETHEUS_PVE_SD_PVE_SERVER=
PROMETHEUS_PVE_SD_PVE_USER= PROMETHEUS_PVE_SD_PVE_USER=
PROMETHEUS_PVE_SD_PVE_PASSWORD= PROMETHEUS_PVE_SD_PVE_PASSWORD=

32
poetry.lock generated
View File

@ -404,6 +404,17 @@ importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
[package.extras] [package.extras]
dev = ["pre-commit", "tox"] dev = ["pre-commit", "tox"]
[[package]]
name = "prometheus-client"
version = "0.11.0"
description = "Python client for the Prometheus monitoring system."
category = "main"
optional = false
python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
[package.extras]
twisted = ["twisted"]
[[package]] [[package]]
name = "proxmoxer" name = "proxmoxer"
version = "1.1.1" version = "1.1.1"
@ -687,7 +698,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pyt
[metadata] [metadata]
lock-version = "1.1" lock-version = "1.1"
python-versions = "^3.6.0" python-versions = "^3.6.0"
content-hash = "d22e186f254a2c3c272eab9e38414221eec6eed25aa874f93b561faf5855a8e8" content-hash = "c801a2419674bd6da0ccd03908adb40371db22b727790f8e89053c39041fb4dd"
[metadata.files] [metadata.files]
anyconfig = [ anyconfig = [
@ -875,6 +886,10 @@ pluggy = [
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] ]
prometheus-client = [
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{file = "prometheus_client-0.11.0.tar.gz", hash = "sha256:3a8baade6cb80bcfe43297e33e7623f3118d660d41387593758e2fb1ea173a86"},
]
proxmoxer = [ proxmoxer = [
{file = "proxmoxer-1.1.1.tar.gz", hash = "sha256:684a69190129da0f102703fc9861f5eea82a7d804f9f96d35c7fd73452f1da7e"}, {file = "proxmoxer-1.1.1.tar.gz", hash = "sha256:684a69190129da0f102703fc9861f5eea82a7d804f9f96d35c7fd73452f1da7e"},
] ]
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] ]
six = [ six = [

View File

@ -8,6 +8,8 @@ import signal
import tempfile import tempfile
from time import sleep from time import sleep
from prometheus_client import start_http_server
import prometheuspvesd.exception import prometheuspvesd.exception
from prometheuspvesd import __version__ from prometheuspvesd import __version__
from prometheuspvesd.config import SingleConfig from prometheuspvesd.config import SingleConfig
@ -119,12 +121,20 @@ class PrometheusSD:
return config return config
def _fetch(self): def _fetch(self):
loop_delay = self.config.config["loop_delay"] self.logger.info("Writes targets to {}".format(self.config.config["output_file"]))
output_file = self.config.config["output_file"]
self.logger.info("Writes targets to {}".format(output_file))
self.logger.debug("Propagate from PVE") self.logger.debug("Propagate from PVE")
if self.config.config["service"] and self.config.config["metrics"]["enabled"]:
self.logger.info(
"Starting metrics http endpoint on port {}".format(
self.config.config["metrics"]["port"]
)
)
start_http_server(
self.config.config["metrics"]["port"],
addr=self.config.config["metrics"]["address"]
)
while True: while True:
try: try:
inventory = self.discovery.propagate() inventory = self.discovery.propagate()
@ -138,7 +148,11 @@ class PrometheusSD:
if not self.config.config["service"]: if not self.config.config["service"]:
break break
self.logger.info("Waiting {} seconds for next discovery loop".format(loop_delay)) self.logger.info(
"Waiting {} seconds for next discovery loop".format(
self.config.config["loop_delay"]
)
)
sleep(self.config.config["loop_delay"]) sleep(self.config.config["loop_delay"])
def _write(self, host_list: HostList): def _write(self, host_list: HostList):

View File

@ -32,6 +32,21 @@ class Config():
""" """
SETTINGS = { SETTINGS = {
"metrics.enabled": {
"default": True,
"env": "METRICS_ENABLED",
"type": environs.Env().bool
},
"metrics.address": {
"default": "127.0.0.1",
"env": "METRICS_ADDRESS",
"type": environs.Env().str
},
"metrics.port": {
"default": 8000,
"env": "METRICS_PORT",
"type": environs.Env().int
},
"config_file": { "config_file": {
"default": "", "default": "",
"env": "CONFIG_FILE", "env": "CONFIG_FILE",

View File

@ -7,6 +7,9 @@ import socket
from collections import defaultdict from collections import defaultdict
import requests import requests
from prometheus_client import Counter
from prometheus_client import Gauge
from prometheus_client import Summary
from prometheuspvesd.config import SingleConfig from prometheuspvesd.config import SingleConfig
from prometheuspvesd.exception import APIError from prometheuspvesd.exception import APIError
@ -21,6 +24,15 @@ try:
except ImportError: except ImportError:
HAS_PROXMOXER = False HAS_PROXMOXER = False
PROPAGATION_TIME = Summary(
"pve_sd_propagate_seconds", "Time spent propagating the inventory from PVE"
)
HOST_GAUGE = Gauge("pve_sd_hosts", "Number of hosts discovered by PVE SD")
PVE_REQUEST_COUNT_TOTAL = Counter("pve_sd_requests_total", "Total count of requests to PVE API")
PVE_REQUEST_COUNT_ERROR_TOTAL = Counter(
"pve_sd_requests_error_total", "Total count of failed requests to PVE API"
)
class Discovery(): class Discovery():
"""Prometheus PVE Service Discovery.""" """Prometheus PVE Service Discovery."""
@ -48,6 +60,7 @@ class Discovery():
timeout=self.config.config["pve"]["auth_timeout"] timeout=self.config.config["pve"]["auth_timeout"]
) )
except requests.RequestException as e: except requests.RequestException as e:
PVE_REQUEST_COUNT_ERROR_TOTAL.inc()
raise APIError(str(e)) raise APIError(str(e))
def _get_names(self, pve_list, pve_type): def _get_names(self, pve_list, pve_type):
@ -89,6 +102,7 @@ class Discovery():
if pve_type == "qemu": if pve_type == "qemu":
# If qemu agent is enabled, try to gather the IP address # If qemu agent is enabled, try to gather the IP address
try: try:
PVE_REQUEST_COUNT_TOTAL.inc()
if self.client.nodes(pve_node).get(pve_type, vmid, "agent", "info") is not None: if self.client.nodes(pve_node).get(pve_type, vmid, "agent", "info") is not None:
networks = self.client.nodes(pve_node).get( networks = self.client.nodes(pve_node).get(
"qemu", vmid, "agent", "network-get-interfaces" "qemu", vmid, "agent", "network-get-interfaces"
@ -104,6 +118,7 @@ class Discovery():
if not address: if not address:
try: try:
PVE_REQUEST_COUNT_TOTAL.inc()
config = self.client.nodes(pve_node).get(pve_type, vmid, "config") config = self.client.nodes(pve_node).get(pve_type, vmid, "config")
sources = [config["net0"], config["ipconfig0"]] sources = [config["net0"], config["ipconfig0"]]
@ -133,20 +148,26 @@ class Discovery():
filtered.append(item.copy()) filtered.append(item.copy())
return filtered return filtered
@PROPAGATION_TIME.time()
def propagate(self): def propagate(self):
self.host_list.clear() self.host_list.clear()
PVE_REQUEST_COUNT_TOTAL.inc()
for node in self._get_names(self.client.nodes.get(), "node"): for node in self._get_names(self.client.nodes.get(), "node"):
try: try:
PVE_REQUEST_COUNT_TOTAL.inc()
qemu_list = self._exclude(self.client.nodes(node).qemu.get()) qemu_list = self._exclude(self.client.nodes(node).qemu.get())
PVE_REQUEST_COUNT_TOTAL.inc()
container_list = self._exclude(self.client.nodes(node).lxc.get()) container_list = self._exclude(self.client.nodes(node).lxc.get())
except Exception as e: # noqa except Exception as e: # noqa
PVE_REQUEST_COUNT_ERROR_TOTAL.inc()
raise APIError(str(e)) raise APIError(str(e))
# Merge QEMU and Containers lists from this node # Merge QEMU and Containers lists from this node
instances = self._get_variables(qemu_list, "qemu").copy() instances = self._get_variables(qemu_list, "qemu").copy()
instances.update(self._get_variables(container_list, "container")) instances.update(self._get_variables(container_list, "container"))
HOST_GAUGE.set(len(instances))
self.logger.info("Found {} targets".format(len(instances))) self.logger.info("Found {} targets".format(len(instances)))
for host in instances: for host in instances:
host_meta = instances[host] host_meta = instances[host]
@ -157,6 +178,7 @@ class Discovery():
except KeyError: except KeyError:
pve_type = "qemu" pve_type = "qemu"
PVE_REQUEST_COUNT_TOTAL.inc()
config = self.client.nodes(node).get(pve_type, vmid, "config") config = self.client.nodes(node).get(pve_type, vmid, "config")
try: try:
@ -164,6 +186,7 @@ class Discovery():
except KeyError: except KeyError:
description = None description = None
except Exception as e: # noqa except Exception as e: # noqa
PVE_REQUEST_COUNT_ERROR_TOTAL.inc()
raise APIError(str(e)) raise APIError(str(e))
try: try:

View File

@ -44,6 +44,7 @@ python = "^3.6.0"
python-json-logger = "2.0.1" python-json-logger = "2.0.1"
requests = "2.25.1" requests = "2.25.1"
"ruamel.yaml" = "0.17.9" "ruamel.yaml" = "0.17.9"
prometheus-client = "^0.11.0"
[tool.poetry.dev-dependencies] [tool.poetry.dev-dependencies]
bandit = "1.7.0" bandit = "1.7.0"