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NodeParameters_Worker.md

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Worker Node Parameters

The following is a list of all available parameters you can use with the setup_worker_node.sh script. At the bottom are some examples that can help you get started and some notes on things to watch out for when setting some of the parameter values.

Parameter values which are wraped in quotes must include the quotes when applied.

Parameters that have default values but are marked as required can still be ommited from the command line. In this event the default value will be used.



Parameter Name Description Default Value Example Value Required
--configure-tcpip Set to true to configure TCP/IP settings of this server. false true No
--interface The interface to configure IP settings for. eth0 ens160 When --configure-tcpip is true
--ip-address The IP address to use. - 192.168.0.100 When --configure-tcpip is true
--netmask The netmask to use. - 255.255.255.0 When --configure-tcpip is true
--default-gateway The default gateway to use. - 192.168.0.1 When --configure-tcpip is true
--dns-servers The DNS servers to use. "8.8.8.8 4.4.4.4" "192.168.0.2 192.168.0.3" No
--dns-search The local DNS search domains. "domain.local" "example.com domain.internal" No
--k8s-version The version of Kubernetes to install. latest 1.34 or 1.34.1 No
--k8s-master-ip The IP address of the control-plane node. - 192.168.0.10 Yes
--k8s-master-port The Kubernetes API server port on the control-plane node. 6443 6443 Yes
--k8s-kubeadm-options Additional options to pass into the kubeadm join command. - "--ignore-preflight-errors=all" No
--k8s-kubeadm-config Kubeadm config file to pass into kubeadm join --config <file>. - "/path/to/config.yaml" No
--token The token portion of the kubeadm join command. - kspnlk.7h[..]3f Yes
--k8s-cloud-provider Sets kubelet cloud-provider mode. Set to external for CCMs. - external Recommended for VMware CPI driver. See here.
--discovery-token-ca-cert-hash The discovery-token-ca-cert-hash portion of the kubeadm join command. - sha256:68d[..]bb2 Yes

Notes

The --token and --discovery-token-ca-cert-hash parameters should be exactly the same as the output from the kubeadm join command. To obtain these values again run kubeadm token create --print-join-command on the control-plane (master) node.

Parameter Examples


Example Usage - Minimum Required:

./setup_worker_node.sh \
    --k8s-master-ip 192.168.0.230 \    
    --token fbdzi9.5yedbdve20r \
    --discovery-token-ca-cert-hash sha256:68d0860434a20c9eb533b640f23134c0fdacc4b929e97c8f8e537f9b4befabb2

Example Usage - Additional kubeadm join options

./setup_master_node.sh \  
    --k8s-kubeadm-options "--ignore-preflight-errors=all"

Note

Note that --k8s-kubeadm-config and --k8s-kubeadm-options when used together may cause errors during initialization.

Available options for kubeadm join here.
Do not include --token or --discovery-token-ca-cert-hash as these are already set in the script.


Example Usage - All:

./setup_worker_node.sh \
    --configure-tcpip true \
    --interface ens160 \
    --ip-address 192.168.0.231 \
    --netmask 255.255.255.0 \
    --default-gateway 192.168.0.1 \
    --dns-servers "192.168.0.30 192.168.0.31 8.8.8.8" \
    --dns-search "domain1.local domain2.local" \
    --k8s-master-ip 192.168.0.230 \
    --k8s-master-port 6443 \
    --k8s-kubeadm-options "--ignore-preflight-errors=all" \
    --k8s-kubeadm-config "/path/to/config.yaml" \
    --k8s-cloud-provider external \
    --token fbdzi9.5yedbdve20r \
    --discovery-token-ca-cert-hash sha256:68d0860434a20c9eb533b640f23134c0fdacc4b929e97c8f8e537f9b4befabb2