<para>

<command>pg_upgrade</> will connect to the old and new servers several times,

so you might want to set authentication to <literal>trust</> in

<filename>pg_hba.conf</>, or if using <literal>md5</> authentication,

use a <filename>~/.pgpass</> file (see <xref linkend="libpq-pgpass">)

to avoid being prompted repeatedly for a password.

so you might want to set authentication to <literal>trust</>

or <literal>peer</> in <filename>pg_hba.conf</>, or if using

<literal>md5</> authentication,use a <filename>~/.pgpass</> file

(see <xref linkend="libpq-pgpass">).

</para>

</step>