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view xml/en/docs/http/ngx_http_status_module.xml @ 963:2116a99dc304
"Nginx HTTP Server - Second Edition" book added.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Mon, 12 Aug 2013 13:20:13 +0400 |
parents | aded7086e84f |
children | fadccc156188 |
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<?xml version="1.0"?> <!-- Copyright (C) Nginx, Inc. --> <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> <module name="Module ngx_http_status_module" link="/en/docs/http/ngx_http_status_module.html" lang="en" rev="1"> <section id="summary"> <para> The module <literal>ngx_http_status_module</literal> provides access to various status information. </para> <para> <note> This module is available as part of our <commercial_version/> only. </note> </para> </section> <section id="example" name="Example Configuration"> <para> <example> location = /status { status; } </example> </para> <para> The simple monitoring page is shipped with this distribution, accessible as “<literal>/status.html</literal>” in the default configuration. It requires the location “<literal>/status</literal>” to be configured as shown above. </para> </section> <section id="directives" name="Directives"> <directive name="status"> <syntax/> <default/> <context>location</context> <para> The status information will be accessible from the surrounding location. </para> </directive> <directive name="status_format"> <syntax><literal>json</literal></syntax> <syntax><literal>jsonp</literal> [<value>callback</value>]</syntax> <default>json</default> <context>http</context> <context>server</context> <context>location</context> <para> By default, status information is output in the JSON format. </para> <para> Alternatively, data may be output as JSONP. The <value>callback</value> parameter specifies the name of a callback function. The value can contain variables. If parameter is omitted, or the computed value is an empty string, then “<literal>ngx_status_jsonp_callback</literal>” is used. </para> </directive> </section> <section id="data" name="Data"> <para> The following status information is provided: <list type="tag"> <tag-name><literal>version</literal></tag-name> <tag-desc> Version of the provided data set. The current version is 1. </tag-desc> <tag-name><literal>nginx_version</literal></tag-name> <tag-desc> Version of nginx. </tag-desc> <tag-name><literal>address</literal></tag-name> <tag-desc> An address of the server that accepted status request. </tag-desc> <tag-name><literal>timestamp</literal></tag-name> <tag-desc> Current time in milliseconds since Epoch. </tag-desc> <tag-name><literal>connections</literal></tag-name> <tag-desc> <list type="tag"> <tag-name><literal>accepted</literal></tag-name> <tag-desc> The total number of accepted client connections. </tag-desc> <tag-name><literal>dropped</literal></tag-name> <tag-desc> The total number of dropped client connections. </tag-desc> <tag-name><literal>active</literal></tag-name> <tag-desc> The current number of active client connections. </tag-desc> <tag-name><literal>idle</literal></tag-name> <tag-desc> The current number of idle client connections. </tag-desc> </list> </tag-desc> <tag-name><literal>requests</literal></tag-name> <tag-desc> <list type="tag"> <tag-name><literal>total</literal></tag-name> <tag-desc> The total number of client requests. </tag-desc> <tag-name><literal>current</literal></tag-name> <tag-desc> The current number of client requests. </tag-desc> </list> </tag-desc> <tag-name><literal>upstreams</literal></tag-name> <tag-desc> For each <link doc="ngx_http_upstream_module.xml" id="server"/> in the <link doc="ngx_http_upstream_module.xml" id="zone">dynamically configurable</link> <link doc="ngx_http_upstream_module.xml" id="upstream">group</link>, the following data are provided: <list type="tag"> <tag-name><literal>server</literal></tag-name> <tag-desc> An address of the <link doc="ngx_http_upstream_module.xml" id="server"/>. </tag-desc> <tag-name><literal>weight</literal></tag-name> <tag-desc> Weight of the <link doc="ngx_http_upstream_module.xml" id="server"/>. </tag-desc> <tag-name><literal>state</literal></tag-name> <tag-desc> Current state, which may be one of “<literal>up</literal>”, “<literal>down</literal>”, “<literal>unavail</literal>”, or “<literal>unhealthy</literal>”. </tag-desc> <tag-name><literal>active</literal></tag-name> <tag-desc> The current number of active connections. </tag-desc> <tag-name><literal>keepalive</literal></tag-name> <tag-desc> The current number of idle <link doc="ngx_http_upstream_module.xml" id="keepalive"/> connections. </tag-desc> <tag-name><literal>requests</literal></tag-name> <tag-desc> The total number of client requests forwarded to this server. </tag-desc> <tag-name><literal>responses</literal></tag-name> <tag-desc> <list type="tag"> <tag-name><literal>total</literal></tag-name> <tag-desc> The total number of responses obtained from this server. </tag-desc> <tag-name> <literal>1xx</literal>, <literal>2xx</literal>, <literal>3xx</literal>, <literal>4xx</literal>, <literal>5xx</literal> </tag-name> <tag-desc> The number of responses with status codes 1xx, 2xx, 3xx, 4xx, and 5xx. </tag-desc> </list> </tag-desc> <tag-name><literal>sent</literal></tag-name> <tag-desc> The total bytes sent to this server. </tag-desc> <tag-name><literal>received</literal></tag-name> <tag-desc> The total bytes received from this server. </tag-desc> <tag-name><literal>fails</literal></tag-name> <tag-desc> The total number of unsuccessful attempts to communicate with the server. </tag-desc> <tag-name><literal>unavail</literal></tag-name> <tag-desc> How many times the server became unavailable for client requests (state “<literal>unavail</literal>”) due to the number of unsuccessful attempts reaching the <literal>max_fails</literal> threshold. </tag-desc> <tag-name><literal>health_checks</literal></tag-name> <tag-desc> <list type="tag"> <tag-name><literal>checks</literal></tag-name> <tag-desc> The total number of <link doc="ngx_http_upstream_module.xml" id="health_check">health check</link> requests made. </tag-desc> <tag-name><literal>fails</literal></tag-name> <tag-desc> The number of failed health checks. </tag-desc> <tag-name><literal>unhealthy</literal></tag-name> <tag-desc> How many times the server became unhealthy (state “<literal>unhealthy</literal>”). </tag-desc> <tag-name><literal>last_passed</literal></tag-name> <tag-desc> Boolean indicating if the last health check request was successful and passed <link doc="ngx_http_upstream_module.xml" id="match">tests</link>. </tag-desc> </list> </tag-desc> </list> </tag-desc> <tag-name><literal>downtime</literal></tag-name> <tag-desc> Total time the server was in the “<literal>unavail</literal>” and “<literal>unhealthy</literal>” states. </tag-desc> <tag-name><literal>downstart</literal></tag-name> <tag-desc> The time (in milliseconds since Epoch) when the server became “<literal>unavail</literal>” or “<literal>unhealthy</literal>”. </tag-desc> </list> </para> </section> </module>