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use Istio Operator to control the policy of accessing external services (#7786) 

set spec.meshConfig.outboundTrafficPolicy.mode to ALLOW_ANY or REGISTRY_ONLY

the previous approach does not work
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Vadim Eisenberg 2020-07-24 22:31:05 +03:00 committed by GitHub
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17
content/en/docs/tasks/traffic-management/egress/egress-control/index.md
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@ -63,25 +63,25 @@ service entry defined within the mesh.
without controlling access to external services.
You can then decide to [configure access to external services](#controlled-access-to-external-services) later.
1. To see this approach in action you need to ensure that your Istio installation is configured
1. To see this approach in action you need to ensure that your Istio installation is configured
with the `meshConfig.outboundTrafficPolicy.mode` option set to `ALLOW_ANY`. Unless you explicitly
set it to `REGISTRY_ONLY` mode when you installed Istio, it is probably enabled by default.
Run the following command to confirm it is configured correctly:
Run the following command to verify that `meshConfig.outboundTrafficPolicy.mode` option is set to `ALLOW_ANY`
or is omitted:
{{< text bash >}}
$ kubectl get configmap istio -n istio-system -o yaml | grep -o "mode: ALLOW_ANY" | uniq
mode: ALLOW_ANY
$ kubectl get istiooperator installed-state -n istio-system -o jsonpath={.spec.meshConfig.outboundTrafficPolicy.mode}
ALLOW_ANY
{{< /text >}}
The string `mode: ALLOW_ANY` should appear in the output if it is enabled.
You should either see `ALLOW_ANY` or empty output.
{{< tip >}}
If you have explicitly configured `REGISTRY_ONLY` mode, you can run the following command to change it:
{{< text bash >}}
$ kubectl get configmap istio -n istio-system -o yaml | sed 's/mode: REGISTRY_ONLY/mode: ALLOW_ANY/g' | kubectl replace -n istio-system -f -
configmap "istio" replaced
$ kubectl patch istiooperator installed-state -n istio-system --type='json' -p='[{"op": "replace", "path": "/spec/meshConfig/outboundTrafficPolicy/mode", "value": "ALLOW_ANY"}]'
{{< /text >}}
{{< /tip >}}
@ -123,8 +123,7 @@ any other unintentional accesses.
1. Run the following command to change the `meshConfig.outboundTrafficPolicy.mode` option to `REGISTRY_ONLY`:
{{< text bash >}}
$ kubectl get configmap istio -n istio-system -o yaml | sed 's/mode: ALLOW_ANY/mode: REGISTRY_ONLY/g' | kubectl replace -n istio-system -f -
configmap "istio" replaced
$ kubectl patch istiooperator installed-state -n istio-system --type='json' -p='[{"op": "replace", "path": "/spec/meshConfig/outboundTrafficPolicy/mode", "value": "REGISTRY_ONLY"}]'
{{< /text >}}
1. Make a couple of requests to external HTTPS services from `SOURCE_POD` to verify that they are now blocked: