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update service&endpoint describe

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jijun2 2015-09-28 23:55:08 -04:00
parent 095fec84e9
commit d624bee753
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8
docs/user-guide/services.md
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@ -208,11 +208,11 @@ this example).
Every node in a Kubernetes cluster runs a `kube-proxy`. This application
watches the Kubernetes master for the addition and removal of `Service`
and `Endpoints` objects. For each `Service` it opens a port (randomly chosen)
on the local node. Any connections made to that port will be proxied to one of
the corresponding backend `Pods`. Which backend to use is decided based on the
on the local node. Any connections to `service` port will be proxied to one of
the corresponding backend `Pods`. Which backend `Pod` to use is decided based on the
`SessionAffinity` of the `Service`. Lastly, it installs iptables rules which
capture traffic to the `Service`'s cluster IP (which is virtual) and `Port` and
redirects that traffic to the previously described port.
capture traffic to the `Service`'s cluster IP (which is virtual) and `Port` then
redirects that traffic to the backend `Pod` (`Endpoints`).
The net result is that any traffic bound for the `Service` is proxied to an
appropriate backend without the clients knowing anything about Kubernetes or