/
pod.go
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/
pod.go
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/*
Copyright 2023 The K8sGPT Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Some parts of this file have been modified to make it functional in Zadig
package analysis
import (
"fmt"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type PodAnalyzer struct {
}
func (PodAnalyzer) Analyze(a Analyzer) ([]Result, error) {
kind := "Pod"
AnalyzerErrorsMetric.DeletePartialMatch(map[string]string{
"analyzer_name": kind,
})
// search all namespaces for pods that are not running
list, err := a.Client.GetClient().CoreV1().Pods(a.Namespace).List(a.Context, metav1.ListOptions{})
if err != nil {
return nil, err
}
var preAnalysis = map[string]PreAnalysis{}
for _, pod := range list.Items {
var failures []Failure
// Check for pending pods
if pod.Status.Phase == "Pending" {
// Check through container status to check for crashes
for _, containerStatus := range pod.Status.Conditions {
if containerStatus.Type == "PodScheduled" && containerStatus.Reason == "Unschedulable" {
if containerStatus.Message != "" {
failures = append(failures, Failure{
Text: containerStatus.Message,
Sensitive: []Sensitive{},
})
}
}
}
}
// Check through container status to check for crashes or unready
for _, containerStatus := range pod.Status.ContainerStatuses {
if containerStatus.State.Waiting != nil {
if containerStatus.State.Waiting.Reason == "CrashLoopBackOff" || containerStatus.State.Waiting.Reason == "ImagePullBackOff" {
if containerStatus.State.Waiting.Message != "" {
failures = append(failures, Failure{
Text: containerStatus.State.Waiting.Message,
Sensitive: []Sensitive{},
})
}
}
// This represents a container that is still being created or blocked due to conditions such as OOMKilled
if containerStatus.State.Waiting.Reason == "ContainerCreating" && pod.Status.Phase == "Pending" {
// parse the event log and append details
evt, err := FetchLatestEvent(a.Context, a.Client, pod.Namespace, pod.Name)
if err != nil || evt == nil {
continue
}
if evt.Reason == "FailedCreatePodSandBox" && evt.Message != "" {
failures = append(failures, Failure{
Text: evt.Message,
Sensitive: []Sensitive{},
})
}
}
} else {
// when pod is Running but its ReadinessProbe fails
if !containerStatus.Ready && pod.Status.Phase == "Running" {
// parse the event log and append details
evt, err := FetchLatestEvent(a.Context, a.Client, pod.Namespace, pod.Name)
if err != nil || evt == nil {
continue
}
if evt.Reason == "Unhealthy" && evt.Message != "" {
failures = append(failures, Failure{
Text: evt.Message,
Sensitive: []Sensitive{},
})
}
}
}
}
if len(failures) > 0 {
preAnalysis[fmt.Sprintf("%s/%s", pod.Namespace, pod.Name)] = PreAnalysis{
Pod: pod,
FailureDetails: failures,
}
AnalyzerErrorsMetric.WithLabelValues(kind, pod.Name, pod.Namespace).Set(float64(len(failures)))
}
}
for key, value := range preAnalysis {
var currentAnalysis = Result{
Kind: kind,
Name: key,
Error: value.FailureDetails,
}
parent, _ := GetParent(a.Client, value.Pod.ObjectMeta)
currentAnalysis.ParentObject = parent
a.Results = append(a.Results, currentAnalysis)
}
return a.Results, nil
}