d4e974da51
* add --max-lag to cluster_has_replica * change --lag to --max-lag in node_is_replica * update tests * update README.md
205 lines
7.2 KiB
Python
205 lines
7.2 KiB
Python
import json
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import logging
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import nagiosplugin
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from typing import Iterable
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from .types import ConnectionInfo, handle_unknown, PatroniResource
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_log = logging.getLogger("nagiosplugin")
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class NodeIsPrimary(PatroniResource):
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def probe(self: "NodeIsPrimary") -> Iterable[nagiosplugin.Metric]:
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r = self.rest_api("primary")
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_log.debug(f"api call status: {r.status}")
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_log.debug(f"api call data: {r.data}")
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return [nagiosplugin.Metric("is_primary", 1 if r.status == 200 else 0)]
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class NodeIsPrimarySummary(nagiosplugin.Summary):
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def ok(self: "NodeIsPrimarySummary", results: nagiosplugin.Result) -> str:
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return "This node is the primary with the leader lock."
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@handle_unknown
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def problem(self: "NodeIsPrimarySummary", results: nagiosplugin.Result) -> str:
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return "This node is not the primary with the leader lock."
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class NodeIsReplica(PatroniResource):
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def __init__(
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self: "NodeIsReplica", connection_info: ConnectionInfo, max_lag: str
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) -> None:
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super().__init__(connection_info)
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self.max_lag = max_lag
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def probe(self: "NodeIsReplica") -> Iterable[nagiosplugin.Metric]:
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if self.max_lag is None:
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r = self.rest_api("replica")
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else:
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r = self.rest_api(f"replica?lag={self.max_lag}")
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_log.debug(f"api call status: {r.status}")
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_log.debug(f"api call data: {r.data}")
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return [nagiosplugin.Metric("is_replica", 1 if r.status == 200 else 0)]
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class NodeIsReplicaSummary(nagiosplugin.Summary):
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def __init__(self: "NodeIsReplicaSummary", lag: str) -> None:
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self.lag = lag
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def ok(self: "NodeIsReplicaSummary", results: nagiosplugin.Result) -> str:
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if self.lag is None:
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return "This node is a running replica with no noloadbalance tag."
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return f"This node is a running replica with no noloadbalance tag and the lag is under {self.lag}."
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@handle_unknown
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def problem(self: "NodeIsReplicaSummary", results: nagiosplugin.Result) -> str:
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if self.lag is None:
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return "This node is not a running replica with no noloadbalance tag."
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return f"This node is not a running replica with no noloadbalance tag and a lag under {self.lag}."
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class NodeIsPendingRestart(PatroniResource):
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def probe(self: "NodeIsPendingRestart") -> Iterable[nagiosplugin.Metric]:
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r = self.rest_api("patroni")
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_log.debug(f"api call status: {r.status}")
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_log.debug(f"api call data: {r.data}")
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item_dict = json.loads(r.data)
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is_pending_restart = item_dict.get("pending_restart", False)
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return [
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nagiosplugin.Metric(
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"is_pending_restart",
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1 if is_pending_restart else 0,
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)
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]
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class NodeIsPendingRestartSummary(nagiosplugin.Summary):
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def ok(self: "NodeIsPendingRestartSummary", results: nagiosplugin.Result) -> str:
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return "This node doesn't have the pending restart flag."
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@handle_unknown
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def problem(
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self: "NodeIsPendingRestartSummary", results: nagiosplugin.Result
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) -> str:
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return "This node has the pending restart flag."
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class NodeTLHasChanged(PatroniResource):
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def __init__(
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self: "NodeTLHasChanged",
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connection_info: ConnectionInfo,
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timeline: str,
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state_file: str,
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) -> None:
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super().__init__(connection_info)
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self.state_file = state_file
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self.timeline = timeline
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def probe(self: "NodeTLHasChanged") -> Iterable[nagiosplugin.Metric]:
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r = self.rest_api("patroni")
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_log.debug(f"api call status: {r.status}")
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_log.debug(f"api call data: {r.data}")
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item_dict = json.loads(r.data)
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new_tl = item_dict["timeline"]
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if self.state_file is not None:
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_log.debug(f"Using state file / cookie {self.state_file}")
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cookie = nagiosplugin.Cookie(self.state_file)
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cookie.open()
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old_tl = cookie.get("timeline")
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cookie["timeline"] = new_tl
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cookie.commit()
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else:
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_log.debug(f"Using input value {self.timeline}")
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old_tl = self.timeline
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_log.debug(f"Tl data: old tl {old_tl}, new tl {new_tl}")
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# The actual check
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yield nagiosplugin.Metric(
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"is_timeline_changed",
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1 if str(new_tl) != str(old_tl) else 0,
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)
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# The performance data : the timeline number
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yield nagiosplugin.Metric("timeline", new_tl)
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class NodeTLHasChangedSummary(nagiosplugin.Summary):
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def __init__(self: "NodeTLHasChangedSummary", timeline: str) -> None:
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self.timeline = timeline
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def ok(self: "NodeTLHasChangedSummary", results: nagiosplugin.Result) -> str:
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return f"The timeline is still {self.timeline}."
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@handle_unknown
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def problem(self: "NodeTLHasChangedSummary", results: nagiosplugin.Result) -> str:
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return f"The expected timeline was {self.timeline} got {results['timeline'].metric}."
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class NodePatroniVersion(PatroniResource):
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def __init__(
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self: "NodePatroniVersion",
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connection_info: ConnectionInfo,
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patroni_version: str,
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) -> None:
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super().__init__(connection_info)
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self.patroni_version = patroni_version
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def probe(self: "NodePatroniVersion") -> Iterable[nagiosplugin.Metric]:
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r = self.rest_api("patroni")
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_log.debug(f"api call status: {r.status}")
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_log.debug(f"api call data: {r.data}")
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item_dict = json.loads(r.data)
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version = item_dict["patroni"]["version"]
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_log.debug(
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f"Version data: patroni version {version} input version {self.patroni_version}"
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)
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# The actual check
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return [
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nagiosplugin.Metric(
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"is_version_ok",
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1 if version == self.patroni_version else 0,
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)
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]
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class NodePatroniVersionSummary(nagiosplugin.Summary):
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def __init__(self: "NodePatroniVersionSummary", patroni_version: str) -> None:
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self.patroni_version = patroni_version
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def ok(self: "NodePatroniVersionSummary", results: nagiosplugin.Result) -> str:
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return f"Patroni's version is {self.patroni_version}."
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@handle_unknown
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def problem(self: "NodePatroniVersionSummary", results: nagiosplugin.Result) -> str:
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# FIXME find a way to make the following work, check is perf data can be strings
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# return f"The expected patroni version was {self.patroni_version} got {results['patroni_version'].metric}."
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return f"Patroni's version is not {self.patroni_version}."
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class NodeIsAlive(PatroniResource):
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def probe(self: "NodeIsAlive") -> Iterable[nagiosplugin.Metric]:
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r = self.rest_api("liveness")
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_log.debug(f"api call status: {r.status}")
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_log.debug(f"api call data: {r.data}")
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return [nagiosplugin.Metric("is_alive", 1 if r.status == 200 else 0)]
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class NodeIsAliveSummary(nagiosplugin.Summary):
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def ok(self: "NodeIsAliveSummary", results: nagiosplugin.Result) -> str:
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return "This node is alive (patroni is running)."
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@handle_unknown
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def problem(self: "NodeIsAliveSummary", results: nagiosplugin.Result) -> str:
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return "This node is not alive (patroni is not running)."
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