tencent cloud

Scenario

The startup script of a node can help you initialize the node before the node becomes ready. The configured script is executed when the node starts. If you purchase multiple CVM instances at a time, the custom data will run on all of them.

Use Limits

• Do not modify configurations such as those for kubelet, kube-proxy, and docker on the TKE node in the startup script.
• If the startup script fails to be executed, it will not be executed again. Therefore, you must ensure the executability of the script or ensure that a retry mechanism is available.
• You can view the script and its log file in the /usr/local/qcloud/tke/userscript path of the node.

Directions

You can configure the startup script for a node in the following scenarios:

• Configuring the node startup script when creating a cluster or a node
• Configuring the node startup script when adding an existing node
• Configuring the node startup script when creating a scaling group

When creating a cluster or a node

• When creating a cluster and adding a node, click Advanced Settings on the "CVM Configuration" page and complete custom data as a startup script, as shown in the following figure:
  

When adding an existing node

• When adding an existing node, click Advanced Settings on the "CVM Configuration" page and complete custom data as a startup script, as shown in the following figure:
  

When creating a scaling group

• When creating a scaling group, click Advanced Settings on the "Launch Configuration" page and complete custom data as a startup script, as shown in the following figure: