I opened up ports on my server
(results of netstat -L)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 *:mysql *:* LISTEN
...
but i can't connect to my server on that port via telnet, or remotely to my MySQL server. I am at my wit's end. How can I allow remote access on this port?
mysql -u -h 'my-server-ip' gives me an error that says '(HY000): Can't connect to MySQL server on 'my-server-ip' (10061)
Any help would be appreciated!
EDIT: SOLVED see my answer below
Are you sure you have the correct port open in iptables? MySQL usually listens on port 3306, but above you have port 3389 (which is usually used for RDP).
I rebooted my server and it worked :S
for any future readers, i opened up port 3306 on my firewall, inbound and outbound. then i commented out the binding_address line in my my.cnf file. i also granted access to remote users using phpmyadmin.
Related
I have set up a raspberry PI 4 with Ubuntu. Apache, PHP, mysql and phpmyadmin are installed and working fine. So when I am trying to connect from another network with my windows device over MySQL Workbench there is an error occuring.
error
Checked: port forwarding on port 80 is open. checked binding ip in mysqld.conf (maybe I made a mistake there) when I try to change the port in this configuration file to 80 and restart "sudo service mysql restart" this error occure "Job for mysql.service failed because the control process exited with error code"
So maybe mysql is not listening to port 80. I have checked sudo lsof -i :80. Only found records from apache listening to port 80.
I am trying for three days now to connect to the database.
Thank you for your help guys!
By default, mysql listens on port 3306, so if you are trying to connect directly to mysql, that could be the issue. Port 80 and 443 are for http/https respectively.
You can't set the port to port 80 because apache needs that port to listen for http requests.
Try setting the port back to 3306 on the mysql host machine and seeing if that works. You may also need to open that port on the host machine as well.
The title might make this seem like a duplicate of some existing questions here on SO, but its kind of not in a way, in my opinion.
8140863, 30617357, 27749691
But I can't for the life of me make the answers to these threads work, instead of asking questions on those threads, I would like to create my own question, I'd like to discuss my setup and then my problem, and then what I've tried
My server setup is this, I have a local(an actual physical machine) and a VPS I'm renting, both are running at Centos7.x, PostgreSQL10, Php 7.x, and Python-2.x, BOTH can ping and ssh each other through a VPN just fine.
Both can connect to their own respective databases just fine through PHP, Python, PSQL Terminal
On my VPS Server, I can connect to my Local Server's PostgreSQL database using Python(psycopg2), PHP(php-pgsql) and Terminal(psql) totally fine.
On my local server, I can connect to my VPS PostgreSQL using Python(psycopg2) and Terminal(psql) EXCEPT through PHP(php-pgsql)
Whenever I connect to VPS's PostgreSQL through PHP, I'm getting this error like everyone else
pg_connect(): Unable to connect to PostgreSQL server:
could not connect to server: Permission denied
Is the server running on host "123.456.0.789" and accepting TCP/IP connections on port 5432?
Here are what I've done.
On postgresql.conf set listen_address = "*" -- this is OK
Added pg_hba entries for both -- this is OK (python and terminal can connect on both)
Port 5432/tcp is both enabled and allowed -- this is OK
Selinux is disabled -- this is the answers for the thread referenced above, but it doesn't work for me even after reboot of course.
these are the result of my netstat
#netstat -na | grep 5432
tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN
tcp6 0 0 :::5432 :::* LISTEN
tcp6 0 94 ::1:55110 ::1:5432 ESTABLISHED
tcp6 0 0 ::1:5432 ::1:55060 ESTABLISHED
tcp6 0 0 ::1:5432 ::1:55110 ESTABLISHED
tcp6 12 0 ::1:5432 ::1:55108 ESTABLISHED
tcp6 0 12 ::1:55108 ::1:5432 ESTABLISHED
tcp6 0 0 ::1:55060 ::1:5432 ESTABLISHED
unix 2 [ ACC ] STREAM LISTENING 31102 /var/run/postgresql/.s.PGSQL.5432
unix 2 [ ACC ] STREAM LISTENING 31104 /tmp/.s.PGSQL.5432
iptables
#iptables-save | grep 5432
-A IN_public_allow -p tcp -m tcp --dport 5432 -m conntrack --ctstate NEW,UNTRACKED -j ACCEPT
getenforce
#getenforce
Disabled
Selinux
#/usr/sbin/sestatus | grep SELinux
SELinux status: disabled
#sudo setsebool -P httpd_can_network_connect_db 1
setsebool: SELinux is disabled.
postgresql.conf
listen_addresses = '*'
port = 5432
pg_hba.conf (i just changed the ip for posting here) I tried using trust, but its still the same
# "local" is for Unix domain socket connections only
local all all password
# IPv4 local connections:
host all all 127.0.0.1/32 password
host all all 123.456.0.1/32 password
host all all 123.456.0.11/32 password
host all all 123.456.0.20/32 password
# IPv6 local connections:
host all all ::1/128 password
edit start: My PHP pg_connect code (I just changed the IP just for this post, but it points to the VPS IP)
$pgcon = pg_connect("dbname=database1 user=some_user password=some_password host=123.456.0.789");
edit end : ==
I would like to emphasize that BOTH servers can connect on each others and their own PostgreSQL database through other means, with the exception of my Local Server, it couldn't connect to VPS PostgreSQL using PHP.
VPS To Self(localhost connection)
VPS to Self via PHP is OK
VPS to Self via Python is OK
VPS to Self via PSQL(Terminal) is OK
VPS To Local Server(Connecting using Local Server's VPN IP)
VPS to Local Server via PHP is OK
VPS to Local Server via Python is OK
VPS to Local Server via PSQL(Terminal) is OK
Local Server to Self(localhost connection)
Local Server to Self via PHP is OK
Local Server to Self via Python is OK
Local Server to Self via PSQL(Terminal) is OK
Local Server to VPS(Connecting using VPS's IP by VPN and Public IP)
Local Server to VPS via Python is OK
Local Server to VPS via PSQL(Terminal) is OK
Local Server to VPS via PHP Is NOT OK
I'm really sorry for the long thread, I wanted to give as much information as I can.
Let's split error by types. I'd made several tests with your case and what I found:
If we mess with connection parameters (i.e. wrong port, or IP address) we get the error "could not connect to server: Connection refused" or "Operation timed out
Is the server running on host "128.0.0.1" and accepting")
If we mess with credentials, we get the error "FATAL: password authentication failed for user ..."
Permission denied can be thrown only if you have not permissions to open a TCP connection from your PHP library.
Pls, double-check if you disable SElinux on your Local Server as for me, this is still the closest workaround for your problem.
I need solution for Centralized DB.
We have DB in one Hosting server (Azure Redhat virtual server) and we need to use the same db in other hosting server too. So it will be centralized DB for both server. I can not use it in navicat also if I use IP of Mysql DB.
I have tried using ( bind-address= IP address of the server where db is hosted ) in My.cnf file but it doesn't allow remote access. to use it in other hosting server nor in any mysql client like navicat / Heidi sql.
Also I have added the port 3306 rule in azure server for inbound security.
Thanks in advance for help.
As Azure VMs disable ICMP and we can use SSH tunnels to allow outside access to internal network resources.
Please try to follow this post, created a SSH tunnel in VM which hosted the MySQL server:
Open port 3306, so a remote client can connect to your MySQL Server. Run the following command to open TCP port 3306
iptables -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT
Now let’s check if the port 3306 is open by running this command:
sudo netstat -anltp|grep :3306
Create a SSH tunnel for port 3307
sudo ssh -fNg -L 3307:127.0.0.1:3306 azurevmuser#servername
Create an endpoint for the port 3307 rule in azure server for inbound security. Now your Database host name is <VM_ip>:3307
Any further concern, please feel free to let me know.
This question already has an answer here:
Can't Connect to PostgreSQL with PHP pg_connect()
(1 answer)
Closed 8 years ago.
Connecting to a PostgreSQL database via a remote IP address, I have been successful via Windows using pgAdmin III, but I get errors whenever I try connecting from my local CentOS 6 Apache web server using the standard php-pgsql library using pg_connect().
Notes:
I am not in control of the remote server, but could inquire about additional info if needed.
My password does contain a special character (although it's not a quote character).
Creds are as follows:
Host (IP): xx.xx.xx.xx
Port: 5432
DBname: sandbox
Username: abc
Password: ***
MaintenanceDB: template1
This is the PHP code I have attempted to run in my local server:
pg_connect("host=xx.xx.xx.xx port=5432 dbname=sandbox user=abc password=***");
I've also tried:
pg_connect("host=xx.xx.xx.xx port=5432 dbname=template1 user=abc password=***");
When I attempt to connect, I receive the following error:
Warning: pg_connect(): Unable to connect to PostgreSQL server: could not connect to server: Permission denied Is the server running on host "xx.xx.xx.xx" and accepting TCP/IP connections on port 5432?
I have added/uncommented extension=pgsql.so in the /etc/php.d/ directory and service httpd restart. I've even gone as far as opening my iptables ports as such so there should be no doubt about local firewall ports being blocked:
-A INPUT -m state --state NEW -m tcp -p tcp --dport 5432 -j ACCEPT
-A INPUT -m state --state NEW -m udp -p udp --dport 5432 -j ACCEPT
Thanks in advance :-)
As per your postgresql connection problem, this solution may work. i just take this answer from php manual and i am not sure about it, so please see here for more http://php.net/manual/en/function.pg-connect.php#38291
You should try to leave the host= and port= parts out of the connection string. This sounds strange, but this is an "option" of Postgre. If you have not activated the TCP/IP port in postgresql.conf then postgresql doesn't accept any incoming requests from an TCP/IP port.
I am trying to run the no-install version of MySQL on Windows XP located in C:/mysql/ on my machine.
The error message I receive within a PHP file when I try to connect to MySQL reads.
Could not connect: No connection could be made because the target machine actively refused it
I have edited the config file my.ini and altered/added the following.
[client]
port = 3306
socket = C:/mysql/tmp/mysql.sock
[mysqld]
port = 3306
socket = C:/mysql/tmp/mysql.sock
basedir = C:/mysql/
datadir = C:/mysql/data/
bind-address = 127.0.0.1
skip-networking
enable-named-pipe
When I run mysqld.exe I can confirm it is running within command prompt tasklist.
However when I try cmd netstat -a I cannot see any port usage at 3306.
Inside MySQL error logs, it reads.
140411 13:30:34 [Note] c:\mysql\bin\mysqld.exe: ready for connections.
Version: '5.5.37-log' socket: '' port: 0 MySQL Community Server (GPL)
The port: 0 doesn't look correct to me, but I am not sure.
When I run mysql.exe direct in cmd I get the following returned
ERROR 2003 (HY000): Can't connect to MySQL server on 'localhost' (10061)
Some things I have tried already.
Placing a copy of my.ini in C:/WINDOWS and also a copy within C:/mysql
Changing bind-address = 127.0.0.1 to bind-address =
localhost
Inside PHP file MySQL connection variants, localhost, 127.0.0.1, 127.0.0.1:3306 inside basic mysql_connect()
Created tmp/mysql.sock file (in case dir + file not existing matters)
Commented out skip-networking in my.ini
After running mysqld.exe whilst running ran mysqladmin.exe in cmd which returns 'Can't connect to MySQL server at 'localhost'
Running telnet localhost 3306 returns
'Connecting To localhost...Could not open connection to the host, on port 3306: C
onnect failed'
Commented out bind-address in my.ini to allow default settings.
Ran mysqld.exe with user root (-u root) also inserted user = root in my.ini
Set Windows Firewall to off.
Thanks in advance.
Ok. You have binded your server to specific ip so please read this MySQL bind-addres. Please unbind your server and check if you have proper user. (last paragraph in documentation)