From 216fe01a075aaf208ddad4e76bcee26595bd5d2e Mon Sep 17 00:00:00 2001
From: Manuel Alejandro de Brito Fontes <aledbf@gmail.com>
Date: Sun, 25 Feb 2018 12:47:14 -0300
Subject: [PATCH] Add option in the configuration configmap to enable remote
 logging (syslog) (#2145)

---
 internal/ingress/controller/config/config.go | 8 ++++++++
 rootfs/etc/nginx/template/nginx.tmpl         | 9 +++++++++
 2 files changed, 17 insertions(+)

diff --git a/internal/ingress/controller/config/config.go b/internal/ingress/controller/config/config.go
index 386753d06d..f5615a9cb0 100644
--- a/internal/ingress/controller/config/config.go
+++ b/internal/ingress/controller/config/config.go
@@ -475,6 +475,13 @@ type Configuration struct {
 	// http://nginx.org/en/docs/http/ngx_http_limit_req_module.html#limit_req_status
 	// Default: 503
 	LimitReqStatusCode int `json:"limit-req-status-code"`
+
+	// EnableSyslog enables the configuration for remote logging in NGINX
+	EnableSyslog bool `json:"enable-syslog"`
+	// SyslogHost FQDN or IP address where the logs should be sent
+	SyslogHost string `json:"syslog-host"`
+	// SyslogPort port
+	SyslogPort int `json:"syslog-port",omitempty`
 }
 
 // NewDefault returns the default nginx configuration
@@ -569,6 +576,7 @@ func NewDefault() Configuration {
 		JaegerSamplerType:            "const",
 		JaegerSamplerParam:           "1",
 		LimitReqStatusCode:           503,
+		SyslogPort:                   514,
 	}
 
 	if glog.V(5) {
diff --git a/rootfs/etc/nginx/template/nginx.tmpl b/rootfs/etc/nginx/template/nginx.tmpl
index b724b4aa6b..4c29eba500 100644
--- a/rootfs/etc/nginx/template/nginx.tmpl
+++ b/rootfs/etc/nginx/template/nginx.tmpl
@@ -150,9 +150,18 @@ http {
     {{ if $cfg.DisableAccessLog }}
     access_log off;
     {{ else }}
+    {{ if $cfg.EnableSyslog }}
+    access_log syslog:server={{ $cfg.SyslogHost }}:{{ $cfg.SyslogPort }} upstreaminfo if=$loggable;
+    {{ else }}
     access_log {{ $cfg.AccessLogPath }} upstreaminfo if=$loggable;
     {{ end }}
+    {{ end }}
+
+    {{ if $cfg.EnableSyslog }}
+    error_log syslog:server={{ $cfg.SyslogHost }}:{{ $cfg.SyslogPort }} {{ $cfg.ErrorLogLevel }};
+    {{ else }}
     error_log  {{ $cfg.ErrorLogPath }} {{ $cfg.ErrorLogLevel }};
+    {{ end }}
 
     {{ buildResolvers $cfg.Resolver $cfg.DisableIpv6DNS }}