CentOS : Perl + CGI で、MySQLアクセス拒否

再現

動作確認のPerl：
参考例：https://metacpan.org/pod/DBD::mysql

use DBI;
 
my $dsn = "DBI:mysql:database=$database;host=$hostname;port=$port";
my $dbh = DBI->connect($dsn, $user, $password);
 
my $sth = $dbh->prepare(
    'SELECT id, first_name, last_name FROM authors WHERE last_name = ?')
    or die "prepare statement failed: $dbh->errstr()";
$sth->execute('Eggers') or die "execution failed: $dbh->errstr()";
print $sth->rows . " rows found.\n";
while (my $ref = $sth->fetchrow_hashref()) {
    print "Found a row: id = $ref->{'id'}, fn = $ref->{'first_name'}\n";
}
$sth->finish;

エラーMessage

install_driver(mysql) failed: Can't locate DBD/mysql.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at (eval 4) line 3.
Perhaps the DBD::mysql perl module hasn't been fully installed,
or perhaps the capitalisation of 'mysql' isn't right.
Available drivers: DBM, ExampleP, File, Gofer, Proxy, Sponge.
 at ./test_zzeng.pl line 8.

対策

sudo yum install perl-DBD-mysql