I have the mongod up and running with the command- sudo mongod --journal --rest --config /etc/mongodb.conf, in the logs it says waiting for connections on port 27017
I am trying to connect to mongod from my PHP script using-
$connection = new MongoClient($connectionString, $opts);
where $connectionString = 'mongodb://127.0.0.1:27017'
and $opts= array('replicaSet' => false, 'connect' => true);
Irrespective of the $opts, i "often" get the exception-
'MongoConnectionException' with message: Failed to connect to: 127.0.0.1:27017: send_package: error reading from socket: The socket is closed
The last time I saw such error, I restarted mongod and the exception cleared off. But now it has stuck up again. Sometimes refreshing the browser does the trick. Any clues as to why such undependable behavior??
Thanks.
I'm using symfony2 to connect to MongoDB and when i deleted the port from options list it works !
Try it
Related
I am trying to use a PHP connection to connect MySQL Database which is on phpmyadmin. Nothing fancy about the connection just trying to see whether the connection is successful or not. I am using MAMP to host the database, the connection I am trying to use is this:
<?php
$servername = "127.0.0.1";
$username = "root";
$password = "root";
try {
$conn = new PDO("mysql:host=$servername;dbname=AppDatabase", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Connected successfully";
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
?>
I have been using postman to test to see if the connection is working, but I keep receiving this error message:
Connection failed: SQLSTATE[HY000] [2002] Connection refused
Before I was receiving an error message of:
Connection failed: SQLSTATE[HY000] [2002] No such file or directory
This was because I had set the servername to localhost, through changing this to the IP address it has given me connection refused and I have no idea what is wrong.
Any help regarding this would be appreciated.
I found the reason why the connection was not working, it was because the connection was trying to connect to port 8888, when it needed to connect to port 8889.
$conn = new PDO("mysql:host=$servername;port=8889;dbname=AppDatabase", $username, $password);
This fixed the problem, although changing the server name to localhost still gives the error.
Connection failed: SQLSTATE[HY000] [2002] No such file or directory
But it connects successfully when the IP address is entered for the server name.
In my case MySQL sever was not running. I restarted the MySQL server and issue was resolved.
//on ubuntu server
sudo /etc/init.d/mysql start
To avoid MySQL stop problem, you can use the "initctl" utility in Ubuntu 14.04 LTS Linux to make sure the service restarts in case of a failure or reboot. Please consider talking a snapshot of root volume (with mysql stopped) before performing this operations for data retention purpose[8]. You can use the following commands to manage the mysql service with "initctl" utility with stop and start operations.
$ sudo initctl stop mysql
$ sudo initctl start mysql
To verify the working, you can check the status of the service and get
the process id (pid), simulate a failure by killing the "mysql"
process and verify its status as running with new process id after
sometime (typically within 1 minute) using the following commands.
$ sudo initctl status mysql # get pid
$ sudo kill -9 <pid> # kill mysql process
$ sudo initctl status mysql # verify status as running after sometime
Note : In latest Ubuntu version now initctl is replaced by systemctl
I spent quite a few hours in a docker environment where all my containers are docker containers and I was using Phinx for migrations. Just to share different responses with different configurations.
Working solutions
"host" => "db", // {docker container's name} Worked
"host" => "172.22.112.1", // {some docker IP through ipconfig - may change on every instance - usually something like 172.x.x.x} Worked
Non-working solutions
"host" => "127.0.0.1", // SQLSTATE[HY000] [2002] Connection refused
"host" => "docker.host.internal", // SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name does not resolve
"host" => "localhost", // SQLSTATE[HY000] [2002] No such file or directory
I was running Phinx in following way.
docker compose --env-file .env run --rm phinx status -e development
Using MAMP I changed the host=localhost to host=127.0.0.1. But a new issue came "connection refused"
Solved this by putting 'port' => '8889', in 'Datasources' => [
Using MAMP ON Mac, I solve my problem by renaming
/Applications/MAMP/tmp/mysql/mysql.sock.lock
to
/Applications/MAMP/tmp/mysql/mysql.sock
1. server cert verify flag
I was required to use SSL to connect, and needed to set PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT to false in the new PDO options array, besides the entry PDO::MYSQL_ATTR_SSL_CA for the CA file.
Without it, the mysql log on the server helpfully mentions
2021-07-27 17:02:51 597605 [Warning] Aborted connection 597605 to db: 'unconnected' user: 'unauthenticated' host: '192.168.10.123' (This connection closed normally without authentication)
where I was definitely passing the right db and username and such in the DSN. An empty options array will show the db and user in the error log, at least. I am sure there is a valid, technical reason for these things.
I am adding this information so I can more easily find it, the next time I end up on this page..
2. host in connection string
In the context of SSL, I've also seen the error when using the IP address instead of the hostname to connect, if the hostname was used as CN (Common Name) in the certificate.
For me was php version from mac instead of MAMP, PATH variable on .bash_profile was wrong. I just prepend the MAMP PHP bin folder to the $PATH env variable. For me was:
/Applications/mampstack-7.1.21-0/php/bin
In terminal run vim ~/.bash_profile to open ~/.bash_profile
Type i to be able to edit the file, add the bin directory as PATH variable on the top to the file:
export PATH="/Applications/mampstack-7.1.21-0/php/bin/:$PATH"
Hit ESC, Type :wq, and hit Enter
In Terminal run source ~/.bash_profile
In Terminal type which php, output should be the path to MAMP PHP install.
I had the same issue on a docker container from php:8.0-fpm-alpine image. I just added the following line in the Dockerfile and it fixed the issue:
RUN apk add mysql-client
I had a similar problem once, turned out the User in the database was created with something like:
CREATE USER 'webpage'#'localhost' IDENTIFIED BY 'password';
worked fine when the connection details php script had localhost, but not when the IP address was there. A quick swap (ip address when creating user and localhost in connection details) revealed those two things have to match.
For everyone if you still strugle with Refusing connection, here is my advice. Download XAMPP or other similar sw and just start MySQL. You dont have to run apache or other things just the MySQL.
I am trying to use a PHP connection to connect MySQL Database which is on phpmyadmin. Nothing fancy about the connection just trying to see whether the connection is successful or not. I am using MAMP to host the database, the connection I am trying to use is this:
<?php
$servername = "127.0.0.1";
$username = "root";
$password = "root";
try {
$conn = new PDO("mysql:host=$servername;dbname=AppDatabase", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Connected successfully";
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
?>
I have been using postman to test to see if the connection is working, but I keep receiving this error message:
Connection failed: SQLSTATE[HY000] [2002] Connection refused
Before I was receiving an error message of:
Connection failed: SQLSTATE[HY000] [2002] No such file or directory
This was because I had set the servername to localhost, through changing this to the IP address it has given me connection refused and I have no idea what is wrong.
Any help regarding this would be appreciated.
I found the reason why the connection was not working, it was because the connection was trying to connect to port 8888, when it needed to connect to port 8889.
$conn = new PDO("mysql:host=$servername;port=8889;dbname=AppDatabase", $username, $password);
This fixed the problem, although changing the server name to localhost still gives the error.
Connection failed: SQLSTATE[HY000] [2002] No such file or directory
But it connects successfully when the IP address is entered for the server name.
In my case MySQL sever was not running. I restarted the MySQL server and issue was resolved.
//on ubuntu server
sudo /etc/init.d/mysql start
To avoid MySQL stop problem, you can use the "initctl" utility in Ubuntu 14.04 LTS Linux to make sure the service restarts in case of a failure or reboot. Please consider talking a snapshot of root volume (with mysql stopped) before performing this operations for data retention purpose[8]. You can use the following commands to manage the mysql service with "initctl" utility with stop and start operations.
$ sudo initctl stop mysql
$ sudo initctl start mysql
To verify the working, you can check the status of the service and get
the process id (pid), simulate a failure by killing the "mysql"
process and verify its status as running with new process id after
sometime (typically within 1 minute) using the following commands.
$ sudo initctl status mysql # get pid
$ sudo kill -9 <pid> # kill mysql process
$ sudo initctl status mysql # verify status as running after sometime
Note : In latest Ubuntu version now initctl is replaced by systemctl
I spent quite a few hours in a docker environment where all my containers are docker containers and I was using Phinx for migrations. Just to share different responses with different configurations.
Working solutions
"host" => "db", // {docker container's name} Worked
"host" => "172.22.112.1", // {some docker IP through ipconfig - may change on every instance - usually something like 172.x.x.x} Worked
Non-working solutions
"host" => "127.0.0.1", // SQLSTATE[HY000] [2002] Connection refused
"host" => "docker.host.internal", // SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name does not resolve
"host" => "localhost", // SQLSTATE[HY000] [2002] No such file or directory
I was running Phinx in following way.
docker compose --env-file .env run --rm phinx status -e development
Using MAMP I changed the host=localhost to host=127.0.0.1. But a new issue came "connection refused"
Solved this by putting 'port' => '8889', in 'Datasources' => [
Using MAMP ON Mac, I solve my problem by renaming
/Applications/MAMP/tmp/mysql/mysql.sock.lock
to
/Applications/MAMP/tmp/mysql/mysql.sock
1. server cert verify flag
I was required to use SSL to connect, and needed to set PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT to false in the new PDO options array, besides the entry PDO::MYSQL_ATTR_SSL_CA for the CA file.
Without it, the mysql log on the server helpfully mentions
2021-07-27 17:02:51 597605 [Warning] Aborted connection 597605 to db: 'unconnected' user: 'unauthenticated' host: '192.168.10.123' (This connection closed normally without authentication)
where I was definitely passing the right db and username and such in the DSN. An empty options array will show the db and user in the error log, at least. I am sure there is a valid, technical reason for these things.
I am adding this information so I can more easily find it, the next time I end up on this page..
2. host in connection string
In the context of SSL, I've also seen the error when using the IP address instead of the hostname to connect, if the hostname was used as CN (Common Name) in the certificate.
For me was php version from mac instead of MAMP, PATH variable on .bash_profile was wrong. I just prepend the MAMP PHP bin folder to the $PATH env variable. For me was:
/Applications/mampstack-7.1.21-0/php/bin
In terminal run vim ~/.bash_profile to open ~/.bash_profile
Type i to be able to edit the file, add the bin directory as PATH variable on the top to the file:
export PATH="/Applications/mampstack-7.1.21-0/php/bin/:$PATH"
Hit ESC, Type :wq, and hit Enter
In Terminal run source ~/.bash_profile
In Terminal type which php, output should be the path to MAMP PHP install.
I had the same issue on a docker container from php:8.0-fpm-alpine image. I just added the following line in the Dockerfile and it fixed the issue:
RUN apk add mysql-client
I had a similar problem once, turned out the User in the database was created with something like:
CREATE USER 'webpage'#'localhost' IDENTIFIED BY 'password';
worked fine when the connection details php script had localhost, but not when the IP address was there. A quick swap (ip address when creating user and localhost in connection details) revealed those two things have to match.
For everyone if you still strugle with Refusing connection, here is my advice. Download XAMPP or other similar sw and just start MySQL. You dont have to run apache or other things just the MySQL.
I am trying to make a crawl project using OpenBuildings/Spiderling.
I want to create a Phantomjs driver like this:
$phantomjs_driver = new Driver_Phantomjs();
$page = new Page($phantomjs_driver);
$page->visit($url);
But it throw an error:
Curl "session" throws exception Failed to connect to localhost
port 4581: Connection refused
I have install phantomjs, and I try to run
phantomjs phantom.js 4581 phantomjs-connection.js --ssl-protocol=any --ignore-ssl-errors=true
on my cmd, but it does not work.
I am facing a weird problem here
we have a server A where the app files are stored
and B server with database
Tried to connect via command prompt from server A to B using the command
mysql -h xx.xx.xx.xx -u root -p password - and it worked
NOw i tried to create a php script in server A to connect to server B
the command is
$this->db=new PDO('mysql:host=xx.xx.xx.xx;dbname=databasename','root','password');
Connection failed: SQLSTATE[HY000] [2003] Can't connect to MySQL
server on 'xx.xx.xx.xx' (13) Fatal error: Uncaught exception
'Exception' with message 'SQLSTATE[HY000] [2003] Can't connect to
MySQL server on 'xx.xx.xx.xx' (13)'
Unable to find a solution on this.
Can any help on this?
thank you
I got it working by running a command in the database server :)
setsebool httpd_can_network_connect_db=1
thanks for the replies yycdev
Try specifying the port in your connection string and ensure the database server is set to allow remote connections and the port is open on your firewall (both of these I suspect are already done as you are able to connect via the terminal but it never hurts to verify and check things).
Change your PDO connection and add the port=3306 or if you're using MAMP use port 8889
$this->db=new PDO('mysql:host=xx.xx.xx.xx;port=3306;dbname=databasename','root','password');
Another thing to check is if – SELinux is blocking network connections. Login as root and run
setsebool -P httpd_can_network_connect=1
I don't know much about that, but try to place the port in back of the script:
$this->db=new PDO('mysql:host=xx.xx.xx.xx;dbname=databasename','root','password',3306);
my cassandra is working well in CLI. and thrift also installed well. i already started apache server and cassandara..but when trying to execute php file that is not executed on browser.it shows the error as:
TException: Error: TSocket: Could not connect to localhost:9160 (Permission denied [13])
and the 12th and 13th line is:
$socket = new TSocket('localhost', 9160);
$transport = new TBufferedTransport($socket, 1024, 1024);
i gave 127.0.0.1 instead of localhost.even it is not working.
can any one please help me?
hi every one i solve the problem....
selinux is cause for that problem.....
TException: Error: TSocket: Could not connect to localhost:9160 (Permission denied [13])
To resolve it, you need to change an SELinux boolean value (which will automatically persist across reboots). You may also want to restart httpd to reset the proxy worker, although this isn't strictly required.
setsebool -P httpd_can_network_connect 1
http://wiki.apache.org/httpd/13PermissionDenied