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<a href="https://github.com/kubernetes/ingress-nginx/edit/master/docs/user-guide/cli-arguments.md" title="Edit this page" class="md-icon md-content__icon">&#xE3C9;</a>
<h1 id="command-line-arguments">Command line arguments<a class="headerlink" href="#command-line-arguments" title="Permanent link"></a></h1>
<p>The following command line arguments are accepted by the Ingress controller executable.</p>
<p>They are set in the container spec of the <code class="codehilite"><span class="err">nginx-ingress-controller</span></code> Deployment manifest</p>
<table>
<thead>
<tr>
<th>Argument</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="codehilite"><span class="err">--alsologtostderr</span></code></td>
<td>log to standard error as well as files</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--annotations-prefix string</span></code></td>
<td>Prefix of the Ingress annotations specific to the NGINX controller. (default "nginx.ingress.kubernetes.io")</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--apiserver-host string</span></code></td>
<td>Address of the Kubernetes API server. Takes the form "protocol://address:port". If not specified, it is assumed the program runs inside a Kubernetes cluster and local discovery is attempted.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--configmap string</span></code></td>
<td>Name of the ConfigMap containing custom global configurations for the controller.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--default-backend-service string</span></code></td>
<td>Service used to serve HTTP requests not matching any known server name (catch-all). Takes the form "namespace/name". The controller configures NGINX to forward requests to the first port of this Service. If not specified, a 404 page will be returned directly from NGINX.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--default-server-port int</span></code></td>
<td>When <code class="codehilite"><span class="err">default-backend-service</span></code> is not specified or specified service does not have any endpoint, a local endpoint with this port will be used to serve 404 page from inside Nginx.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--default-ssl-certificate string</span></code></td>
<td>Secret containing a SSL certificate to be used by the default HTTPS server (catch-all). Takes the form "namespace/name".</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--disable-catch-all</span></code></td>
<td>Disable support for catch-all Ingresses.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--election-id string</span></code></td>
<td>Election id to use for Ingress status updates. (default "ingress-controller-leader")</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--enable-dynamic-certificates</span></code></td>
<td>Dynamically serves certificates instead of reloading NGINX when certificates are created, updated, or deleted. Currently does not support OCSP stapling, so --enable-ssl-chain-completion must be turned off (default behaviour). Assuming the certificate is generated with a 2048 bit RSA key/cert pair, this feature can store roughly 5000 certificates. Once the backing Lua shared dictionary <code class="codehilite"><span class="err">certificate_data</span></code> is full, the least recently used certificate will be removed to store new ones. (enabled by default)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--enable-metrics</span></code></td>
<td>Enable the collection of metrics for scraping by Prometheus (default true)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--enable-ssl-chain-completion</span></code></td>
<td>Autocomplete SSL certificate chains with missing intermediate CA certificates. A valid certificate chain is required to enable OCSP stapling. Certificates uploaded to Kubernetes must have the "Authority Information Access" X.509 v3 extension for this to succeed. (default true)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--enable-ssl-passthrough</span></code></td>
<td>Enable SSL Passthrough.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--health-check-path string</span></code></td>
<td>URL path of the health check endpoint. Configured inside the NGINX status server. All requests received on the port defined by the healthz-port parameter are forwarded internally to this path. (default "/healthz")</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--health-check-timeout duration</span></code></td>
<td>Time limit, in seconds, for a probe to health-check-path to succeed. (default 10)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--healthz-port int</span></code></td>
<td>Port to use for the healthz endpoint. (default 10254)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--http-port int</span></code></td>
<td>Port to use for servicing HTTP traffic. (default 80)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--https-port int</span></code></td>
<td>Port to use for servicing HTTPS traffic. (default 443)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--status-port int</span></code></td>
<td>Port to use for the lua HTTP endpoint configuration. (default 10246)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--stream-port int</span></code></td>
<td>Port to use for the lua TCP/UDP endpoint configuration. (default 10247)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--ingress-class string</span></code></td>
<td>Name of the ingress class this controller satisfies. The class of an Ingress object is set using the annotation "kubernetes.io/ingress.class". All ingress classes are satisfied if this parameter is left empty.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--kubeconfig string</span></code></td>
<td>Path to a kubeconfig file containing authorization and API server information.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--log_backtrace_at traceLocation</span></code></td>
<td>when logging hits line file:N, emit a stack trace (default :0)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--log_dir string</span></code></td>
<td>If non-empty, write log files in this directory</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--logtostderr</span></code></td>
<td>log to standard error instead of files (default true)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--metrics-per-host</span></code></td>
<td>enable host labels for prometheus metrics. You may want to disable this to reduce the number of time-series created. (default true)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--profiling</span></code></td>
<td>Enable profiling via web interface host:port/debug/pprof/ (default true)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--publish-service string</span></code></td>
<td>Service fronting the Ingress controller. Takes the form "namespace/name". When used together with update-status, the controller mirrors the address of this service's endpoints to the load-balancer status of all Ingress objects it satisfies.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--publish-status-address string</span></code></td>
<td>Customized address to set as the load-balancer status of Ingress objects this controller satisfies. Requires the update-status parameter.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--report-node-internal-ip-address</span></code></td>
<td>Set the load-balancer status of Ingress objects to internal Node addresses instead of external. Requires the update-status parameter.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--ssl-passthrough-proxy-port int</span></code></td>
<td>Port to use internally for SSL Passthrough. (default 442)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--stderrthreshold severity</span></code></td>
<td>logs at or above this threshold go to stderr (default 2)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--sync-period duration</span></code></td>
<td>Period at which the controller forces the repopulation of its local object stores. Disabled by default.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--sync-rate-limit float32</span></code></td>
<td>Define the sync frequency upper limit (default 0.3)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--tcp-services-configmap string</span></code></td>
<td>Name of the ConfigMap containing the definition of the TCP services to expose. The key in the map indicates the external port to be used. The value is a reference to a Service in the form "namespace/name:port", where "port" can either be a port number or name. TCP ports 80 and 443 are reserved by the controller for servicing HTTP traffic.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--udp-services-configmap string</span></code></td>
<td>Name of the ConfigMap containing the definition of the UDP services to expose. The key in the map indicates the external port to be used. The value is a reference to a Service in the form "namespace/name:port", where "port" can either be a port name or number.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--update-status</span></code></td>
<td>Update the load-balancer status of Ingress objects this controller satisfies. Requires setting the publish-service parameter to a valid Service reference. (default true)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--update-status-on-shutdown</span></code></td>
<td>Update the load-balancer status of Ingress objects when the controller shuts down. Requires the update-status parameter. (default true)</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">-v</span></code>, <code class="codehilite"><span class="err">--v Level</span></code></td>
<td>log level for V logs</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--version</span></code></td>
<td>Show release information about the NGINX Ingress controller and exit.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--vmodule moduleSpec</span></code></td>
<td>comma-separated list of pattern=N settings for file-filtered logging</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--watch-namespace string</span></code></td>
<td>Namespace the controller watches for updates to Kubernetes objects. This includes Ingresses, Services and all configuration resources. All namespaces are watched if this parameter is left empty.</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--validating-webhook</span></code></td>
<td>The address to start an admission controller on</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--validating-webhook-certificate</span></code></td>
<td>The certificate the webhook is using for its TLS handling</td>
</tr>
<tr>
<td><code class="codehilite"><span class="err">--validating-webhook-key</span></code></td>
<td>The key the webhook is using for its TLS handling</td>
</tr>
</tbody>
</table>
</article>
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