[BUG]: Crd AltermanagerConfig field muteTimeIntervals.timeIntervals.months regex pattern |[1-12] isn't correct

[dellnoantechnp]

Is there an existing issue for this?

• I have searched the existing issues

What happened?

Description

apiVersion: monitoring.coreos.com/v1alpha1
kind: AlertmanagerConfig
metadata:
  name: my-prometheusalert
spec:
  muteTimeIntervals:
    - name: holidays
      timeIntervals:
      - months:
        - january
        - may:august
        - "1"       <--- success
        - "2"       <--- success
        - "3"       <---- failed
....

The AlertmanagerConfig "my-prometheusalert" is invalid: spec.muteTimeIntervals.timeIntervals.months: Invalid value: "12": spec.muteTimeIntervals.timeIntervals.months in body should match '^((?i)january|february|march|april|may|june|july|august|september|october|november|december|[1-12])(?:((:((?i)january|february|march|april|may|june|july|august|september|october|november|december|[1-12]))$)|$)'

Steps to Reproduce

Expected Result

two way expect:

1. only accept month name.
2. \b([1-9]|1[0-2])\b access 1-12

Actual Result

Invalid value: "12"

Prometheus Operator Version

Name:                   kube-prometheus-stack-operator                                      
Namespace:              monitoring                                                          
CreationTimestamp:      Mon, 29 Jan 2024 06:14:09 +0000                                     
Labels:                 app=kube-prometheus-stack-operator                                  
                        app.kubernetes.io/component=prometheus-operator                     
                        app.kubernetes.io/instance=kube-prometheus-stack                    
                        app.kubernetes.io/managed-by=Helm                                   
                        app.kubernetes.io/name=kube-prometheus-stack-prometheus-operator    
                        app.kubernetes.io/part-of=kube-prometheus-stack                     
                        app.kubernetes.io/version=56.2.1                                    
                        argocd.argoproj.io/instance=kube-prometheus-stack                   
                        chart=kube-prometheus-stack-56.2.1                                  
                        heritage=Helm                                                       
                        release=kube-prometheus-stack                                       
Annotations:            deployment.kubernetes.io/revision: 1                                
Selector:               app=kube-prometheus-stack-operator,release=kube-prometheus-stack    
Replicas:               1 desired | 1 updated | 1 total | 1 available | 0 unavailable       
StrategyType:           RollingUpdate                                                       
MinReadySeconds:        0                                                                   
RollingUpdateStrategy:  25% max unavailable, 25% max surge                                  
Pod Template:                                                                               
  Labels:           app=kube-prometheus-stack-operator                                      
                    app.kubernetes.io/component=prometheus-operator                         
                    app.kubernetes.io/instance=kube-prometheus-stack                        
                    app.kubernetes.io/managed-by=Helm                                       
                    app.kubernetes.io/name=kube-prometheus-stack-prometheus-operator        
                    app.kubernetes.io/part-of=kube-prometheus-stack                         
                    app.kubernetes.io/version=56.2.1                                        
                    chart=kube-prometheus-stack-56.2.1                                      
                    heritage=Helm                                                           
                    release=kube-prometheus-stack

Kubernetes Version

>_ kubectl version -o yaml 
clientVersion:
  buildDate: "2021-08-04T18:03:20Z"
  compiler: gc
  gitCommit: c2b5237ccd9c0f1d600d3072634ca66cefdf272f
  gitTreeState: clean
  gitVersion: v1.22.0
  goVersion: go1.16.6
  major: "1"
  minor: "22"
  platform: linux/amd64
serverVersion:
  buildDate: "2021-08-04T17:57:25Z"
  compiler: gc
  gitCommit: c2b5237ccd9c0f1d600d3072634ca66cefdf272f
  gitTreeState: clean
  gitVersion: v1.22.0
  goVersion: go1.16.6
  major: "1"
  minor: "22"
  platform: linux/amd64

Kubernetes Cluster Type

kubeadm

How did you deploy Prometheus-Operator?

helm chart:prometheus-community/kube-prometheus-stack

Manifests

No response

prometheus-operator log output

None

Anything else?

No response

[mouad-eh]

This looks like a good issue to start with. I already started working on it, I will follow up with PR once I am done.