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version-2.12: clarify expected NO_PROXY value format

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Billy Tat
2025-07-21 16:25:28 -07:00
parent df6a1e1b4c
commit 717bef1544
4 changed files with 31 additions and 7 deletions
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versioned_docs/version-2.12/getting-started/installation-and-upgrade/other-installation-methods/rancher-behind-an-http-proxy/install-kubernetes.md
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@@ -10,7 +10,15 @@ Once the infrastructure is ready, you can continue with setting up a Kubernetes
The steps to set up RKE, RKE2, or K3s are shown below.
For convenience, export the IP address and port of your proxy into an environment variable and set up the HTTP_PROXY variables for your current shell on every node:
For convenience, export the IP address and port of your proxy into an environment variable and set up the `HTTP_PROXY` variables for your current shell on every node:
:::caution
The `NO_PROXY` environment variable is not standardized, and the accepted format of the value can differ between applications. When configuring the `NO_PROXY` variable for Rancher, the value must adhere to the format expected by Golang.
Specifically, the value should be a comma-delimited string which only contains IP addresses, CIDR notation, domain names, or special DNS labels (e.g. `*`). For a full description of the expected value format, refer to the [**upstream Golang documentation**](https://pkg.go.dev/golang.org/x/net/http/httpproxy#Config)
:::
```
export proxy_host="10.0.0.5:8888"