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Cover image for CKA & CKAD Series (Part 5): Networking
Shahriyar Al Mustakim Mitul
Shahriyar Al Mustakim Mitul

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CKA & CKAD Series (Part 5): Networking

Every node in a cluster, is appointed an IP Address
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and under the node, a private IP address is set to communicate between pods.

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Here 10.244.0.0 is a private network which pods use.
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If there are multiple nodes in a cluster, surely the nodes have different IP addresses.
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But the problem is with the private network created to connect the nodes.

That is same to all the nodes.

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So, you can see the internal network address is same for all. This makes a conflict if we want to contact with pods outside of a node.
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Thus there are some external third party tools, we have to use.
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After using the third party tools, they appoint a different internal network for different node's pods. Thus it is now easy to communicate to different pods.
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That was it for the basics. We made it simple for you boss!

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