Backport of Add note about service upstream env var dot broken into release/1.16.x (#19398)
backport of commit 8a0896d379abf684e82a8a1f436a5758402e94f6 Co-authored-by: Tu Nguyen <im2nguyen@gmail.com>
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@ -81,6 +81,12 @@ The following Kubernetes resource annotations could be used on a pod to control
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local port to listen for those connections. When transparent proxy is enabled,
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this annotation is optional. This annotation can be either _labeled_ or _unlabeled_. We recommend the labeled format because it has a more consistent syntax and can be used to reference cluster peers as upstreams.
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<Note>
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If the upstream annotation contains a dot (for example, `static-server.svc:8080`), you may not be able to reference the auto-generated environment variables (`<NAME>_CONNECT_SERVICE_HOST` and `<NAME>_CONNECT_SERVICE_PORT`) since the environment variables will also contain the dot.
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</Note>
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- **Labeled**:
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The labeled annotation format allows you to reference any service as an upstream. You can specify a Consul Enterprise namespace. You can also specify an admin partition in the same datacenter, a cluster peer, or a WAN-federated datacenter.
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@ -168,6 +168,12 @@ upstream. This is analogous to the standard Kubernetes service environment varia
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point instead to the correct local proxy port to establish connections via
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service mesh.
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<Note>
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If the upstream annotation contains a dot (for example, `static-server.svc:8080`), you may not be able to reference the auto-generated environment variables (`<NAME>_CONNECT_SERVICE_HOST` and `<NAME>_CONNECT_SERVICE_PORT`) since the environment variables will also contain the dot.
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</Note>
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You can verify access to the static text server using `kubectl exec`.
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Because transparent proxy is enabled by default,
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use Kubernetes DNS to connect to your desired upstream.
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