pvc/node-daemon/monitoring/checkmk/pvc.py

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#!/usr/bin/env python3
#
# Check_MK PVC plugin
#
# Copyright 2017-2021, Joshua Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from .agent_based_api.v1 import *
from cmk.base.check_api import host_name
from time import time
from json import loads
def discover_pvc(section):
my_node = host_name().split(".")[0]
yield Service(item=f"PVC Node {my_node}")
yield Service(item="PVC Cluster")
def check_pvc(item, params, section):
state = State.OK
summary = "Stuff"
details = None
data = loads(" ".join(section[0]))
my_node = host_name().split(".")[0]
maintenance_map = {
"true": "on",
"false": "off",
}
maintenance = maintenance_map[data["maintenance"]]
# Node check
if item == f"PVC Node {my_node}":
my_node = host_name().split(".")[0]
node_health = data["node_health"][my_node]["health"]
node_messages = data["node_health"][my_node]["messages"]
summary = f"Node health is {node_health}% (maintenance {maintenance})"
if len(node_messages) > 0:
details = ", ".join(node_messages)
if node_health <= 50 and maintenance == "off":
state = State.CRIT
elif node_health <= 90 and maintenance == "off":
state = State.WARN
else:
state = State.OK
yield Metric(name="node-health", value=node_health)
# Cluster check
elif item == "PVC Cluster":
cluster_health = data["cluster_health"]["health"]
cluster_messages = data["cluster_health"]["messages"]
summary = f"Cluster health is {cluster_health}% (maintenance {maintenance})"
if len(cluster_messages) > 0:
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details = ", ".join([m["text"] for m in cluster_messages])
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if cluster_health <= 50 and maintenance == "off":
state = State.CRIT
elif cluster_health <= 90 and maintenance == "off":
state = State.WARN
else:
state = State.OK
yield Metric(name="cluster-health", value=cluster_health)
yield Result(state=state, summary=summary, details=details)
return
register.check_plugin(
name="pvc",
service_name="%s",
check_ruleset_name="pvc",
discovery_function=discover_pvc,
check_function=check_pvc,
check_default_parameters={},
)