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docs: fix grammar

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cn 2021-04-15 09:23:35 +02:00
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2
CHANGELOG.md
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@ -169,7 +169,7 @@ IMPROVEMENTS:
IMPROVEMENTS:
- Support dropping priviliges on startup, also affects external commands run
- Support dropping privileges on startup, also affects external commands run
- Add [metriks](https://github.com/eric/metriks) support for basic metrics in the process title
- Detach from child processes running external commands to avoid zombie processes

34
README.md
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@ -75,7 +75,7 @@ There is an officially maintained [Docker image for dyndnsd](https://hub.docker.
Users can make extensions by deriving from the official Docker image or building their own.
The Docker image consumes the same configuration file in YAML format as the gem, inside the container it needs to be mounted/available as `/etc/dyndnsd/config.yml`. the following YAML should be used as a base and extended with user's settings:
The Docker image consumes the same configuration file in YAML format as the gem, inside the container it needs to be mounted/available as `/etc/dyndnsd/config.yml`. The following YAML should be used as a base and extended with user's settings:
```yaml
host: "0.0.0.0"
@ -98,7 +98,7 @@ docker run -d --name dyndnsd \
cmur2/dyndnsd:vX.Y.Z
```
*Note*: You may need to expose more then just port 8080 e.g. if you use the `zone_transfer_server` which can be done by appending additional `-p 5353:5353` flags to the `docker run` command.
*Note*: You may need to expose more than just port 8080 e.g. if you use the `zone_transfer_server` which can be done by appending additional `-p 5353:5353` flags to the `docker run` command.
@ -106,7 +106,7 @@ docker run -d --name dyndnsd \
By using [DNS zone transfers via AXFR (RFC5936)](https://tools.ietf.org/html/rfc5936) any secondary nameserver can retrieve the DNS zone contents from dyndnsd.rb and serve them to clients.
To speedup propagation after changes dyndnsd.rb can issue a [DNS NOTIFY (RFC1996)](https://tools.ietf.org/html/rfc1996) to inform the nameserver that the DNS zone contents changed and should be fetched even before the time indicated in the SOA record is up.
Currently dyndnsd.rb does not support any authentication for incoming DNS zone transfer requests so it should be isolated from the internet on these ports.
Currently, dyndnsd.rb does not support any authentication for incoming DNS zone transfer request, so it should be isolated from the internet on these ports.
This approach has several advantages:
- dyndnsd.rb can be used in *hidden primary* fashion isolated from client's DNS traffic and does not need to implement full nameserver features
@ -151,7 +151,7 @@ users:
NSD is a nice, open source, authoritative-only, low-memory DNS server that reads BIND-style zone files (and converts them into its own database) and has a simple configuration file.
A feature NSD is lacking is the [Dynamic DNS update (RFC2136)](https://tools.ietf.org/html/rfc2136) functionality BIND offers but one can fake it using the following dyndnsd.rb configuration:
A feature NSD is lacking is the [Dynamic DNS update (RFC2136)](https://tools.ietf.org/html/rfc2136) functionality BIND offers, but one can fake it using the following dyndnsd.rb configuration:
```yaml
host: "0.0.0.0"
@ -197,29 +197,29 @@ The update URL you want to tell your clients (humans or scripts ^^) consists of
where:
* the protocol depends on your (webserver/proxy) settings
* USER and PASSWORD are needed for HTTP Basic Auth and valid combinations are defined in your config.yaml
* DOMAIN should match what you defined in your config.yaml as domain but may be anything else when using a webserver as proxy
* PORT depends on your (webserver/proxy) settings
* HOSTNAMES is a required list of comma-separated FQDNs (they all have to end with your config.yaml domain) the user wants to update
* MYIP is optional and the HTTP client's IP address will be used if missing
* MYIP6 is optional but if present also requires presence of MYIP
* the protocol depends on your (web server/proxy) settings
* `USER` and `PASSWORD` are needed for HTTP Basic Auth and valid combinations are defined in your config.yaml
* `DOMAIN` should match what you defined in your config.yaml as domain but may be anything else when using a web server as proxy
* `PORT` depends on your (web server/proxy) settings
* `HOSTNAMES` is a required list of comma-separated FQDNs (they all have to end with your config.yaml domain) the user wants to update
* `MYIP` is optional and the HTTP client's IP address will be used if missing
* `MYIP6` is optional but if present also requires presence of `MYIP`
### IP address determination
The following rules apply:
* use any IP address provided via the myip parameter when present, or
* use any IP address provided via the X-Real-IP header e.g. when used behind HTTP reverse proxy such as nginx, or
* use any IP address provided via the `myip` parameter when present, or
* use any IP address provided via the `X-Real-IP` header e.g. when used behind HTTP reverse proxy such as nginx, or
* use any IP address used by the connecting HTTP client
If you want to provide an additional IPv6 address as myip6 parameter, the myip parameter containing an IPv4 address has to be present, too! No automatism is applied then.
If you want to provide an additional IPv6 address as myip6 parameter, the `myip` parameter containing an IPv4 address has to be present, too! No automatism is applied then.
### SSL, multiple listen ports
Use a webserver as a proxy to handle SSL and/or multiple listen addresses and ports. DynDNS.com provides HTTP on port 80 and 8245 and HTTPS on port 443.
Use a web server as a proxy to handle SSL and/or multiple listen addresses and ports. DynDNS.com provides HTTP on port 80 and 8245 and HTTPS on port 443.
### Startup
@ -231,7 +231,7 @@ The [Debian 6 init.d script](docs/debian-6-init-dyndnsd) assumes that dyndnsd.rb
### Monitoring
For monitoring dyndnsd.rb uses the [metriks](https://github.com/eric/metriks) framework and exposes several metrics like the number of unauthenticated requests, requests that did (not) update a hostname, etc. By default the most important metrics are shown in the [proctitle](https://github.com/eric/metriks#proc-title-reporter) but you can also configure a [Graphite](https://graphiteapp.org/) backend for central monitoring or the [textfile_reporter](https://github.com/prometheus/node_exporter/#textfile-collector) which outputs Graphite-style metrics that are also compatible with Prometheus to a file.
For monitoring dyndnsd.rb uses the [metriks](https://github.com/eric/metriks) framework and exposes several metrics like the number of unauthenticated requests, requests that did (not) update a hostname, etc. By default, the most important metrics are shown in the [proctitle](https://github.com/eric/metriks#proc-title-reporter, butt you can also configure a [Graphite](https://graphiteapp.org/) backend for central monitoring or the [textfile_reporter](https://github.com/prometheus/node_exporter/#textfile-collector) which outputs Graphite-style metrics that are also compatible with Prometheus to a file.
```yaml
host: "0.0.0.0"
@ -273,7 +273,7 @@ users:
For tracing, dyndnsd.rb is instrumented using the [OpenTracing](http://opentracing.io/) framework and will emit span tracing data for the most important operations happening during the request/response cycle. Using a middleware for Rack allows handling incoming OpenTracing span information properly.
Currently only one OpenTracing-compatible tracer implementation named [CNCF Jaeger](https://github.com/jaegertracing/jaeger) can be configured to use with dyndnsd.rb.
Currently, only one OpenTracing-compatible tracer implementation named [CNCF Jaeger](https://github.com/jaegertracing/jaeger) can be configured to use with dyndnsd.rb.
```yaml
host: "0.0.0.0"