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Add system view pg_stat_ssl

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This view shows information about all connections, such as if the
connection is using SSL, which cipher is used, and which client
certificate (if any) is used.

Reviews by Alex Shulgin, Heikki Linnakangas, Andres Freund & Michael Paquier
This commit is contained in:
Magnus Hagander
2015-04-12 19:07:46 +02:00
parent a10589a512
commit 9029f4b374
10 changed files with 320 additions and 7 deletions
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77
doc/src/sgml/monitoring.sgml
View File

@ -300,6 +300,14 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
</entry>
</row>
<row>
<entry><structname>pg_stat_ssl</><indexterm><primary>pg_stat_ssl</primary></indexterm></entry>
<entry>One row per connection (regular and replication), showing information about
SSL used on this connection.
See <xref linkend="pg-stat-ssl-view"> for details.
</entry>
</row>
</tbody>
</tgroup>
</table>
@ -825,6 +833,75 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
listed; no information is available about downstream standby servers.
</para>
<table id="pg-stat-ssl-view" xreflabel="pg_stat_ssl">
<title><structname>pg_stat_ssl</structname> View</title>
<tgroup cols="3">
<thead>
<row>
<entry>Column</entry>
<entry>Type</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><structfield>pid</></entry>
<entry><type>integer</></entry>
<entry>Process ID of a backend or WAL sender process</entry>
</row>
<row>
<entry><structfield>ssl</></entry>
<entry><type>boolean</></entry>
<entry>True if SSL is used on this connection</entry>
</row>
<row>
<entry><structfield>version</></entry>
<entry><type>text</></entry>
<entry>Version of SSL in use, or NULL if SSL is not in use
on this connection</entry>
</row>
<row>
<entry><structfield>cipher</></entry>
<entry><type>text</></entry>
<entry>Name of SSL cipher in use, or NULL if SSL is not in use
on this connection</entry>
</row>
<row>
<entry><structfield>bits</></entry>
<entry><type>integer</></entry>
<entry>Number of bits in the encryption algorithm used, or NULL
if SSL is not used on this connection</entry>
</row>
<row>
<entry><structfield>compression</></entry>
<entry><type>boolean</></entry>
<entry>True if SSL compression is in use, false if not,
or NULL if SSL is not in use on this connection</entry>
</row>
<row>
<entry><structfield>clientdn</></entry>
<entry><type>text</></entry>
<entry>Distinguished Name (DN) field from the client certificate
used, or NULL if no client certificate was supplied or if SSL
is not in use on this connection. This field is truncated if the
DN field is longer than <symbol>NAMEDATALEN</symbol> (64 characters
in a standard build)
</entry>
</row>
</tbody>
</tgroup>
</table>
<para>
The <structname>pg_stat_ssl</structname> view will contain one row per
backend or WAL sender process, showing statistics about SSL usage on
this connection. It can be joined to <structname>pg_stat_activity</structname>
or <structname>pg_stat_replication</structname> on the
<structfield>pid</structfield> column to get more details about the
connection.
</para>
<table id="pg-stat-archiver-view" xreflabel="pg_stat_archiver">
<title><structname>pg_stat_archiver</structname> View</title>