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add time skew problem to troubleshooting guide (#388)

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Frank Budinsky 2017-06-15 12:35:17 -04:00 committed by GitHub
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troubleshooting/index.md
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@ -10,6 +10,26 @@ type: markdown
Oh no! You have some problems? Let us help.
## No traces appearing in Zipkin when running Istio locally on Mac
Istio is installed and everything seems to be working except there are no traces showing up in Zipkin when there
should be.
This may be caused by a known [Docker issue](https://github.com/docker/for-mac/issues/1260) where the time inside
containers may skew significantly from the time on the host machine. If this is the case,
when you select a very long date range in Zipin you will see the traces appearing as much as several days too early.
You can also confirm this problem by comparing the date inside a docker container to outside:
```bash
$ docker run --entrypoint date gcr.io/istio-testing/ubuntu-16-04-slave:latest
Sun Jun 11 11:44:18 UTC 2017
$ date -u
Thu Jun 15 02:25:42 UTC 2017
```
To fix the problem, you'll need to shutdown and then restart Docker before reinstalling Istio.
## Envoy won't connect to my HTTP/1.0 service
Envoy requires HTTP/1.1 or HTTP/2 traffic for upstream services. For example, when using [NGINX](https://www.nginx.com/) for serving traffic behind Envoy, you will need to set the [proxy_http_version](http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_http_version) directive in your NGINX config to be "1.1", since the NGINX default is 1.0