<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <link rel="STYLESHEET" type="text/css" href="pgadmin3.css"> <title>Connection errors</title> </head> <body> <H3>Connect errors</H3> <p> When connecting to a PostgreSQL server, you might get error messages that need some more explanations. If you encounter them, please read the following information carefully, we're sure they will help you. <br> <ul> <li><a href="hints/conn-listen.html">could not connect to Server: Connection refused</a> <li><a href="hints/conn-hba.html">FATAL: no pg_hba.conf entry</a> </ul> <br> </p> <H3 id="notrunning">could not connect to Server: Connection refused</H3> <center><img src="images/not-running.png"></center> <p> If this message appears, there are two possible reasons for this: either the server isn't running at all. Simply start it. </p> <p> The other non-trivial cause for this message is that the server isn't configured to accept TCP/IP requests on the address shown. </p> <p> For security reasons, a PostgreSQL server "out of the box" doesn't listen on TCP/IP ports. Instead, it has to be enabled to listen for TCP/IP requests. This can be done by adding <b>tcpip = true</b> to the postgresql.conf file for Versions 7.3.x and 7.4.x, or <b>listen_addresses='*'</b> for Version 8.0.x and above; this will make the server accept connections on any IP interface. </p> <p> For further information, please refer to the PostgreSQL documentation about <a href="http://www.postgresql.org/docs/current/interactive/runtime-config.html">runtime configuration</a>.<br> </p> <br> <H3 id="no-hba">FATAL: no pg_hba.conf entry</H3> <center><img src="images/no-hba.png"></center> <p> If this message appears, your server can be contacted correctly over the network, but isn't configured to accept your connection. Your client isn't detected as a legal user for the database. </p> <p> You will have to add an entry in the form <br> <b>host template1 postgres 192.168.0.0/24 md5</b> <br>for IPV4 or <br> <b>host template1 postgres ::ffff:192.168.0.0/120 md5</b> <br>for IPV6 networks to the pg_hba.conf file. </p> <p> For further information, please refer to the PostgreSQL documentation about <a href="http://www.postgresql.org/docs/current/interactive/client-authentication.html">client authentication</a>.<br> </p> </BODY> </HTML>
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