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FAQ: env vars for SSL root certs and DNS resolver 

Added section to FAQ about environment variables, which allow to control
location of SSL root certificate as well as DNS resolver used.

see also comment in #683
This commit is contained in:
Lucas Bremgartner 2018-01-15 22:32:37 +01:00 committed by Nick Craig-Wood
parent 4b0c5f79b5
commit 8c90bfb0cd
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docs/content/faq.md
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@ -125,6 +125,9 @@ curl -o /etc/ssl/certs/ca-certificates.crt https://raw.githubusercontent.com/bag
ntpclient -s -h pool.ntp.org
```
The two environment variables `SSL_CERT_FILE` and `SSL_CERT_DIR`, mentioned in the [x509 pacakge](https://godoc.org/crypto/x509),
provide an additional way to provide the SSL root certificates.
Note that you may need to add the `--insecure` option to the `curl` command line if it doesn't work without.
```
@ -161,3 +164,7 @@ dig www.googleapis.com @8.8.8.8 # resolve with Google's DNS server
If you are using `systemd-resolved` (default on Arch Linux), ensure it
is at version 233 or higher. Previous releases contain a bug which
causes not all domains to be resolved properly.
Additionally with the `GODEBUG=netdns=` environment variable the Go
resolver decision can be influenced. This also allows to resolve certain
issues with DNS resolution. See the [name resolution section in the go docs](https://golang.org/pkg/net/#hdr-Name_Resolution).