disable lua for arch s390x and ppc64le

LuaJIT is not available for s390x and ppc64le, disable the lua part in nginx.tmpl on these platform.

cmd/nginx/flags.go

@@ -195,10 +195,14 @@ func parseFlags() (bool, *controller.Configuration, error) {
 		glog.Warningf("Check of SSL certificate chain is disabled (--enable-ssl-chain-completion=false)")
 	}
 
-	if *dynamicConfigurationEnabled && (runtime.GOARCH == "s390x" || runtime.GOARCH == "ppc64le") {
-		b := false
-		dynamicConfigurationEnabled = &b
-		glog.Warningf("Disabling dynamic configuration feature (LuaJIT is not available in s390x and ppc64le)")
+	// LuaJIT is not available on arch s390x and ppc64le
+	disableLua := false
+	if runtime.GOARCH == "s390x" || runtime.GOARCH == "ppc64le" {
+		disableLua = true
+		if *dynamicConfigurationEnabled {
+			*dynamicConfigurationEnabled = false
+			glog.Warningf("Disabling dynamic configuration feature (LuaJIT is not available in s390x and ppc64le)")
+		}
 	}
 
 	config := &controller.Configuration{
@@ -225,6 +229,7 @@ func parseFlags() (bool, *controller.Configuration, error) {
 		UseNodeInternalIP:           *useNodeInternalIP,
 		SyncRateLimit:               *syncRateLimit,
 		DynamicConfigurationEnabled: *dynamicConfigurationEnabled,
+		DisableLua:                  disableLua,
 		ListenPorts: &ngx_config.ListenPorts{
 			Default:  *defServerPort,
 			Health:   *healthzPort,

internal/ingress/controller/config/config.go

@@ -657,6 +657,7 @@ type TemplateConfig struct {
 	ListenPorts                 *ListenPorts
 	PublishService              *apiv1.Service
 	DynamicConfigurationEnabled bool
+	DisableLua                  bool
 }
 
 // ListenPorts describe the ports required to run the

internal/ingress/controller/controller.go

@@ -97,6 +97,8 @@ type Configuration struct {
 	SyncRateLimit float32
 
 	DynamicConfigurationEnabled bool
+
+	DisableLua bool
 }
 
 // GetPublishService returns the configured service used to set ingress status

internal/ingress/controller/nginx.go

@@ -628,6 +628,7 @@ func (n *NGINXController) OnUpdate(ingressCfg ingress.Configuration) error {
 		ListenPorts:                 n.cfg.ListenPorts,
 		PublishService:              n.GetPublishService(),
 		DynamicConfigurationEnabled: n.cfg.DynamicConfigurationEnabled,
+		DisableLua:                  n.cfg.DisableLua,
 	}
 
 	content, err := n.t.Write(tc)

rootfs/etc/nginx/template/nginx.tmpl

@@ -36,6 +36,7 @@ events {
 }
 
 http {
+    {{ if not $all.DisableLua }}
     lua_package_cpath "/usr/local/lib/lua/?.so;/usr/lib/x86_64-linux-gnu/lua/5.1/?.so;;";
     lua_package_path "/etc/nginx/lua/?.lua;/etc/nginx/lua/vendor/?.lua;/usr/local/lib/lua/?.lua;;";
 
@@ -73,6 +74,7 @@ http {
         balancer.init_worker()
     }
     {{ end }}
+    {{ end }}
     {{/* we use the value of the header X-Forwarded-For to be able to use the geo_ip module */}}
     {{ if $cfg.UseProxyProtocol }}
     real_ip_header      proxy_protocol;
@@ -494,7 +496,7 @@ http {
             access_log off;
             return 200;
         }
-
+        {{ if not $all.DisableLua }}
         location /is-dynamic-lb-initialized {
             {{ if $cfg.EnableOpentracing }}
             opentracing off;
@@ -513,7 +515,7 @@ http {
                 ngx.exit(ngx.HTTP_OK)
             }
         }
-
+        {{ end }}
         location /nginx_status {
             set $proxy_upstream_name "internal";
             {{ if $cfg.EnableOpentracing }}
@@ -816,6 +818,7 @@ stream {
         {{ end }}
 
         location {{ $path }} {
+            {{ if not $all.DisableLua }}
             {{ if shouldConfigureLuaRestyWAF $all.Cfg.DisableLuaRestyWAF $location.LuaRestyWAF.Mode }}
             access_by_lua_block {
                 local lua_resty_waf = require("resty.waf")
@@ -866,6 +869,8 @@ stream {
                 balancer.call()
                 {{ end }}
             }
+            {{ end }}
+
             {{ if (and (not (empty $server.SSLCertificate)) $all.Cfg.HSTS) }}
             if ($scheme = https) {
             more_set_headers                        "Strict-Transport-Security: max-age={{ $all.Cfg.HSTSMaxAge }}{{ if $all.Cfg.HSTSIncludeSubdomains }}; includeSubDomains{{ end }}{{ if $all.Cfg.HSTSPreload }}; preload{{ end }}";