mirror of
https://github.com/kubernetes/node-problem-detector.git
synced 2026-03-01 09:10:22 +00:00
532f933bd8
1) Add lookback support in kernel monitor. After started, Kernel monitor will check some old logs to detect problems which happened before last node reboot. 2) Add `lookback` and `startPattern` in kernel monitor configuration. * `lookback` specifies how long time kernel monitor should look back. * `startPattern` specifies which log indicates the node is started. kernel monitor will clear all current node conditions once it finds a node start log. This makes sure that old problems won't change the node condition. 3) Add support for kernel panic monitoring, the null pointer and divide 0 kernel panic will be surfaced as event. Usually kernel monitor will report these events during looking back phase.
111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kernelmonitor
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import (
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"reflect"
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"testing"
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"time"
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kerntypes "k8s.io/node-problem-detector/pkg/kernelmonitor/types"
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"k8s.io/node-problem-detector/pkg/types"
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)
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const (
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testSource = "TestSource"
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testConditionA = "TestConditionA"
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testConditionB = "TestConditionB"
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)
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func TestGenerateStatus(t *testing.T) {
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initConditions := []types.Condition{
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{
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Type: testConditionA,
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Status: true,
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Transition: time.Now(),
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},
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{
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Type: testConditionB,
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Status: false,
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Transition: time.Now(),
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},
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}
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logs := []*kerntypes.KernelLog{
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{
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Timestamp: time.Unix(1000, 1000),
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Message: "test message 1",
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},
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{
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Timestamp: time.Unix(2000, 2000),
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Message: "test message 2",
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},
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}
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for c, test := range []struct {
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rule kerntypes.Rule
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expected types.Status
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}{
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// Do not need Pattern because we don't do pattern match in this test
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{
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rule: kerntypes.Rule{
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Type: kerntypes.Perm,
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Condition: testConditionA,
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Reason: "test reason",
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},
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expected: types.Status{
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Source: testSource,
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Conditions: []types.Condition{
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{
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Type: testConditionA,
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Status: true,
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Transition: time.Unix(1000, 1000),
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Reason: "test reason",
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Message: "test message 1\ntest message 2",
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},
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initConditions[1],
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},
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},
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},
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{
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rule: kerntypes.Rule{
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Type: kerntypes.Temp,
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Reason: "test reason",
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},
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expected: types.Status{
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Source: testSource,
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Events: []types.Event{{
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Severity: types.Warn,
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Timestamp: time.Unix(1000, 1000),
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Reason: "test reason",
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Message: "test message 1\ntest message 2",
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}},
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Conditions: initConditions,
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},
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},
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} {
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k := &kernelMonitor{
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config: MonitorConfig{
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Source: testSource,
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},
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conditions: initConditions,
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}
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got := k.generateStatus(logs, test.rule)
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if !reflect.DeepEqual(&test.expected, got) {
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t.Errorf("case %d: expected status %+v, got %+v", c+1, test.expected, got)
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}
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}
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}
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