<emphasis>on the PostgreSQL servers</emphasis>.
If <productname>Pgpool-II</productname> and <productname>PostgreSQL</productname>
are installed on separate servers,
- it is not requried to install it on the servers where <productname>Pgpool-II</productname> are running.
+ it is not required to install it on the servers where <productname>Pgpool-II</productname> are running.
-->
<filename>pgpool-II-pgXX-extensions</filename>は<emphasis>PostgreSQLサーバ側にインストールするパッケージ</emphasis>となります。<productname>Pgpool-II</productname>と<productname>PostgreSQL</productname>をそれぞれ別のサーバにインストールしている場合は、<filename>pgpool-II-pgXX-extensions</filename>は<productname>Pgpool-II</productname>が稼働しているサーバにインストールする必要はありません。
</para>
<title>Setting up SSH public key authentication</title>
<para>
To use the automated failover and online recovery of <productname>Pgpool-II</productname>,
- it is requried to configure <emphasis>SSH public key authentication
+ it is required to configure <emphasis>SSH public key authentication
(passwordless SSH login)</emphasis> to all backend servers using
<literal>postgres</literal> user (the default user Pgpool-II is running as.
Pgpool-II 4.0 or before, the default user is <literal>root</literal>).
<emphasis>on the PostgreSQL servers</emphasis>.
If <productname>Pgpool-II</productname> and <productname>PostgreSQL</productname>
are installed on separate servers,
- it is not requried to install it on the servers where <productname>Pgpool-II</productname> are running.
+ it is not required to install it on the servers where <productname>Pgpool-II</productname> are running.
</para>
</note>
<programlisting>