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Add support for proxy protocol decoding and encoding in TCP services

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This commit is contained in:
Jean-Baptiste Guerraz 2017-09-27 16:10:16 +02:00
parent 6e24dc68f7
commit a24d65745e
4 changed files with 31 additions and 17 deletions
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4
controllers/nginx/README.md
View file

@ -334,8 +334,8 @@ version to fully support Kube-Lego is nginx Ingress controller 0.8.
## Exposing TCP services
Ingress does not support TCP services (yet). For this reason this Ingress controller uses the flag `--tcp-services-configmap` to point to an existing config map where the key is the external port to use and the value is `<namespace/service name>:<service port>:[PROXY]`
It is possible to use a number or the name of the port. The last field is optional. Adding `PROXY` in the last field we can enable Proxy Protocol in a TCP service.
Ingress does not support TCP services (yet). For this reason this Ingress controller uses the flag `--tcp-services-configmap` to point to an existing config map where the key is the external port to use and the value is `<namespace/service name>:<service port>:[PROXY]:[PROXY]`
It is possible to use a number or the name of the port. The two last fields are optional. Adding `PROXY` in either or both of the two last fields we can use Proxy Protocol decoding (listen) and/or encoding (proxy_pass) in a TCP service (https://www.nginx.com/resources/admin-guide/proxy-protocol/).
The next example shows how to expose the service `example-go` running in the namespace `default` in the port `8080` using the port `9000`
```

11
controllers/nginx/rootfs/etc/nginx/template/nginx.tmpl
View file

@ -434,19 +434,22 @@ stream {
}
server {
{{ range $address := $all.Cfg.BindAddressIpv4 }}
listen {{ $address }}:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.UseProxyProtocol }} proxy_protocol{{ end }};
listen {{ $address }}:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ else }}
listen {{ $tcpServer.Port }}{{ if $tcpServer.Backend.UseProxyProtocol }} proxy_protocol{{ end }};
listen {{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ end }}
{{ if $IsIPV6Enabled }}
{{ range $address := $all.Cfg.BindAddressIpv6 }}
listen {{ $address }}:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.UseProxyProtocol }} proxy_protocol{{ end }};
listen {{ $address }}:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ else }}
listen [::]:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.UseProxyProtocol }} proxy_protocol{{ end }};
listen [::]:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ end }}
{{ end }}
proxy_timeout {{ $cfg.ProxyStreamTimeout }};
proxy_pass tcp-{{ $tcpServer.Port }}-{{ $tcpServer.Backend.Namespace }}-{{ $tcpServer.Backend.Name }}-{{ $tcpServer.Backend.Port }};
{{ if $tcpServer.Backend.ProxyProtocol.Encode }}
proxy_protocol on;
{{ end }}
}
{{ end }}