How to properly plan the network and open a Kubernetes cluster on a classic network
Most of the time, deploying a Kubernetes cluster directly on SKE may result in deployment failures. Here's how to quickly and successfully set up a Kubernetes cluster.
Alert Information
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Effective Troubleshooting Steps
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Root Cause
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Solution
[The key lies in establishing communication with the internal interface of SKE]
One, identify the IP and connected device for the internal communication interface of SKE.
For example, here it is 13.199.27.8 
Two, review your cluster configuration to ensure it can access this router; most people fail to open a cluster due to the network not reaching the internal communication interface (13.199.27.8).
Three, below are a few successful deployment scenarios (it is recommended to use the isolation mode, adding an extra network card for business access, or defining your own expected subnet):
- Use the Reused Mode with an IP range of 13.199.27.x connected to physical exit 1.
- Use the Isolation Mode where the management interface is 13.199.27.x connected to physical exit 1; the business interface can be set according to your own expectations, and the connected devices can also be customized according to your expectations.
Impact Scope
NA
Is It a Temporary Solution
NA
Suggestions and Summary
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Troubleshooting Content
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Original Link
https://support.sangfor.com.cn/cases/list?product_id=37&type=1&category_id=29044&isOpen=true