Uncaught exception 'MongoConnectionException'

问题

Fatal error: Uncaught exception 'MongoConnectionException' with message 
'Failed to connect to: localhost:27017: Permission denied' in 
/var/www/html/test.php:8 Stack trace: #0 /var/www/html/test.php(8): 
MongoClient->__construct() #1 {main} thrown in /var/www/html/test.php 
on line 8

Hi Mongo experts...

I am a developer wanting to try out MongoDB. So installed centoOS 6.5 64bit in a test machine (Dell E520 Intel Dual Core 4GB Ram), installed PHP (Apache was already present).

Then installed MongoDB (yum install mongo-10gen mongo-10gen-server), then installed "pecl install mongo" (install ok: channel://pecl.php.net/mongo-1.4.5), added extension=mongo.so to php.ini.

To install pecl, I installed few other things like C++ compiler & php-pear. php5-dev & php5-cli was not available in yum so installed php-devel & php-cli (installed versions are php-devel-5.3.3-27.el6_5.x86_64 & php-cli-5.3.3-27.el6_5.x86_64

I turned off iptables firewall. Ran mongo --host localhost:27017 from shell & connected without problems

[root@localhost ~]# mongo --host localhost:27017
MongoDB shell version: 2.4.8
connecting to: localhost:27017/test
>

These are the contents of test.php

<?php
ini_set('display_errors',1);
ini_set('display_startup_errors',1);
error_reporting(-1);

// connect
$m = new MongoClient();
//$m = new MongoClient("mongodb://localhost:27017");

// select a database
$db = $m->comedy;

// select a collection (analogous to a relational database's table)
$collection = $db->cartoons;

// add a record
$document = array( "title" => "Calvin and Hobbes", "author" => "Bill Watterson" );
$collection->insert($document);

// add another record, with a different "shape"
$document = array( "title" => "XKCD", "online" => true );
$collection->insert($document);

// find everything in the collection
$cursor = $collection->find();

// iterate through the results
foreach ($cursor as $document) {
    echo $document["title"] . "\n";
}
?>

As you can see I have tried both $m = new MongoClient(); & $m = new MongoClient("mongodb://localhost:27017");

But I am getting the same error. Where am I going wrong?

回答1:

This problem is documented at http://ca3.php.net/manual/en/mongo.installation.php#mongo.installation.fedora

Red Hat,Fedora and CentOS:

The default Apache settings on these systems do not let requests make network connections, meaning that the driver will get "Permission denied" errors when it tries to connect to the database. If you run into this, try running:

$ /usr/sbin/setsebool -P httpd_can_network_connect 1

Then restart Apache. (This issue has also occurred with SELinux.)

Thanks for all your support!

Hope this thread helps someone from going in circles!

来源：https://stackoverflow.com/questions/20954985/uncaught-exception-mongoconnectionexception

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connection