K8s requests/limits for Calico components?

[rafalr-ntropy]

I'm using tigera-operator-v3.28.2 helm chart and I wasn't able to find easily digestible documentation how to set cpu/memory limits for calico components (tigera-operator, api-server, typha, node, csi-node-driver, kube-controllers). Values available in https://artifacthub.io/packages/helm/projectcalico/tigera-operator and in https://github.com/projectcalico/calico/blob/master/charts/tigera-operator/values.yaml aren't enough.

I tried to set values.yaml according to https://docs.tigera.io/calico/latest/reference/installation/api#operator.tigera.io/v1.APIServerDeploymentPodSpec to:

apiServer:                                                                                                                            
  enabled: true                                           
  spec:                                           
    apiServerDeployment:
      spec:                                   
        template:                                                                                                                     
          spec:
            containers:             
            - name: calico-apiserver
              resources:           
                limits:            
                  cpu: 200m        
                  memory: 192Mi    
                requests:
                  cpu: 100m
                  memory: 192Mi                         
            topologySpreadConstraints:
            - maxSkew: 1
              topologyKey: topology.kubernetes.io/hostname
              whenUnsatisfiable: ScheduleAnyway                                                                                       
            - maxSkew: 1         
              topologyKey: topology.kubernetes.io/zone
              whenUnsatisfiable: ScheduleAnyway
installation:                    
  calicoNetwork:                      
    bgp: Enabled                                   
    ipPools:                                     
    - blockSize: 25                               
      cidr: 172.19.0.0/16          
      encapsulation: IPIP
      name: default                                                                                                                                                                                                                                                          
  cni:
    ipam:                             
      type: Calico
    type: Calico                                                                                                                                                                                                                                                             
  controlPlaneReplicas: 2   
  enabled: true                                                                                                                       
  kubernetesProvider: EKS                                                                                                             
  logging:                                                                                                                            
    cni:
      logSeverity: Info                                                                                                                                                                                                                                                      
  nodeUpdateStrategy:
    rollingUpdate:                    
      maxUnavailable: 1
    type: RollingUpdate                                                                                                                                                                                                                                                      
resources:               
  limits:                                                                                                                             
    cpu: 200m                                                                                                                         
    memory: 128Mi                                                                                                                     
  requests:                                                                                                                           
    cpu: 100m                                                                                                                         
    memory: 128Mi

As a result calico-apiserver doesn't have any requests/limits set. They are set only for tigera-operator.

How should I set cpu/memory requests limits for all calico components?

Expected Behavior

A clear example in the documentation or in values.yaml for the helm chart should be provided to foster much needed setting of cpu/memory limits/requests for all calico components.

Your Environment

• Calico version
  v3.28.2
• Calico dataplane (iptables, windows etc.)
  iptables
• Orchestrator version (e.g. kubernetes, mesos, rkt):
  EKS 1.31 platform version eks.12
• Operating System and version:
  Amazon Linux 2, kernel 5.10.225-213.878.amzn2.x86_64
• Link to your project (optional):

[caseydavenport]

@rafalr-ntropy I think you're on the right track. Unfortunately our documentation here is pretty bad and needs to be fixed.

I think the reason it's not working for you is an extra spec section in your apiserver block. It should look like this IIUC:

apiServer:                                                                                                                            
  enabled: true                                           
  apiServerDeployment:
    spec:                                   
      template:                                                                                                                     
        spec:
          containers:             
          - name: calico-apiserver
            resources:           
              limits:            
                cpu: 200m        
                memory: 192Mi    
              requests:
                cpu: 100m
                memory: 192Mi                         
          topologySpreadConstraints:
          - maxSkew: 1
            topologyKey: topology.kubernetes.io/hostname
            whenUnsatisfiable: ScheduleAnyway                                                                                       
          - maxSkew: 1         
            topologyKey: topology.kubernetes.io/zone
            whenUnsatisfiable: ScheduleAnyway

[rafalr-ntropy]

hi @caseydavenport
thanks for a quick response!
your proposed solution works as expected
in https://docs.tigera.io/calico/latest/reference/installation/api#operator.tigera.io/v1.APIServer I noticed that spec field is present for APIServer object

do you maybe have similar examples how to set limits/requests for calico components other than the apiserver?

[caseydavenport]

@rafalr-ntropy glad it worked!

I believe there should be equivalent fields you can specify in the Installation object for the remaining components: https://docs.tigera.io/calico/latest/reference/installation/api#operator.tigera.io/v1.InstallationSpec

For example calicoNodeDaemonSet, calicoKubeControllersDeployment, and typhaDeployment