Kubernetes API Server Customization

Please contact Platform9 Support prior to changing any API Server, Controller or Scheduler flags. Creating or updating clusters with unknown, incorrect or unsupported flags may result in cluster outages and dataloss.

As of Platform9 5.2 PMK is supports customizing Kubernetes API flags at the time of cluster creation. Customizing API flags is an advanced feature that should not be used in production environments without prior consultation with Platform9 Support.

Reserved API Server Flags

The following are reserved API Server flags

Bash
    
xxxxxxxxxx
 
kube-apiserver"        - "--allow-privileged=_ "        - "--anonymous-auth= "        - "--authentication-token-webhook-cache-ttl=__ "        - "--authentication-token-webhook-config-file=_ "        - "--authorization-mode= "        - "--bind-address= "        - "--client-ca-file= "        - "--cloud-provider= "        - "--etcd-servers= "        - "--runtime-config=_ "        - "--secure-port= "        - "--service-account-issuer= "        - "--service-account-key-file=/ "        - "--service-account-signing-key-file=/ "        - "--service-cluster-ip-range= "        - "--storage-backend= "        - "--storage-media-type= "        - "--tls-cert-file="        - "--tls-private-key-file= "        - "--tls-cipher-suites= "        - "--requestheader-client-ca-file= "        - "--requestheader-allowed-names= "        - "--requestheader-extra-headers-prefix= "        - "--requestheader-group-headers= "        - "--requestheader-username-headers= "        - "--proxy-client-cert-file= "        - "--proxy-client-key-file= "        - "--kubelet-client-certificate= "        - "--kubelet-client-key= "        - "--v= "        - "--http2-max-streams-per-connection="
Copy

Reserved Controller Flags

The following are reserved controller flags

Bash
    
xxxxxxxxxx
 
kube-controller-manager"        - "--cloud-provider= "        - "--kubeconfig= "        - "--leader-elect= "        - "--root-ca-file= "        - "--service-account-private-key-file= "        - "--v=_ _"        - "--horizontal-pod-autoscaler-use-rest-clients= "        - "--use-service-account-credentials= "
Copy

Reserved Scheduler Flags

the following are reserved scheduler flags

Bash
    
xxxxxxxxxx
 
kube-scheduler"        - "--config= "        - "--leader-elect= "        - "--v= "
Copy

Last updated by Anagha Pamidi on Jan 27, 2026

Was this page helpful?