I am connecting to a remote server's port 27017 using ssh and then accessing the mongo database on that system. I can successfully connect it via the shell script. However, when I write a python program and try to connect to that system, I am not able to connect. I use the following piece of code:
conn = MongoClient('mongodb://username:password#hostname:27017/database')
I would want to mention that I am accessing the destination system behind a proxy. However, the port 27017 is enabled for my system to connect to the destination system.
conn = MongoClient('mongodb://username:password#hostname:27017/database')
Your hostname is 27017 but the port you enabled is 27107
Related
i want to connect a python code with a database localized in a Google Cloud Platform PostgreSQL database. I've been running this code and this working correctly, but recently i chaged me server to a VPS provided by a host. Now when i try to connect to the database with python3 i receive the follow message:
Psycopg2.OperationalError: could not connect to server: Connection timed out
Is the server running on host "35.199.90.49" and accepting
TCP/IP connections on port 5432?
I have authorized the IP of the server in the Google Cloud Platform, i tried to open all IPv4 address too, but nothing is working. I changed the /XX from IPv4 for my server. I disabled the firewall of the server. Nothing is working but when i connect with the psql command at ubuntu server, the database connection is okay.
I launched an AWS linux instance and installed and ran mongo as instructed here. The mongo service is running and accepting connections on 27017. However, when I go to the server publik dns with port 27017 the server does not respond and I don't see the default mongo message.
I am trying to run a Python(Flask) server on another instance and trying to connect to the mongo server using the private ip, but the connection does not happen. I get this error message on the terminal :
pymongo.errors.ServerSelectionTimeoutError: xxx.xx.xx.xx:27017: [Errno
111] Connection refused
Is this not the right way to use mongo db on aws ? If this approach is feasible, what is causing the connection to not happen ?
All inputs appreciated, much thanks!
It is possible that your mongodb is configured to only accept connection from local host. Edit /etc/mongod.conf file to comment out the line that bindIP like in the example below -
# network interfaces
net:
port: 27017
# bindIp: 127.0.0.1 # Listen to local interface only, comment to listen on all interfaces.
I'm having a unique problem with Windows Azure that I don't see on other providers. I've been running connections from remote VMs to a MySQL database running on a DigitalOcean VM. I've successfully connected with AWS, Rackspace, Google, and all other providers, but for some reason, Microsoft Azure VMs don't seem to work.
VM OS: Ubuntu 14.04
I'm trying to connect using PyMySQL and SQLAlchemy.
What I've Tried:
The port is open and listening
The user definitely has permission to upload data into the DB (other remote connections with this user all work fine).
I have even tried "ufw disable" for the Firewall on the Windows Azure VM
I've set 3306 as an endpoint on the Azure VM
Despite all my attempts, the connection cannot be established. Is there something I'm missing on the setup?
As Azure VMs disable ICMP and we can use SSH tunnels to allow outside access to internal network resources. However I don’t have resource to create a DigitalOcean VM, but I have created 2 Azure VMs in 2 Cloud Services to try to reproduce the issue.
I installed mysql-server in VM.1 and mysql-client in VM.2.
Then I tried to connect MySQL server directly from VM.2, I got message “can’t connect to MySQL…”.
To work around this issue, I followed this post, created a SSH tunnel in VM.1 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 in the dashboard of the VM in Azure management portal. For more details , See how to add endpoint to you Virtual machine. Now your Database host name is <vm_name>.cloudapp.net:3307
Then connect MySQL server from VM.2 using command:
# mysql -h <vm_1_name>.cloudapp.net -P 3307 -u user –pPassword
and it would work fine. Feel free to let us know if we have any misunderstood on your issue.
I am trying to connect to VPS mysql database from my PC. I use sqlalchemy framework, but I need establish SSH tunnel before connection.
Usual way, when web app run on VPS:
create_engine('mysql://user:pswd#localhost/dbname')
How can I connect to this database from another PC. Assume there are connections credentials: IP, username, password
Your MySQL server is listening to local connections only. To make it listen to outside connections:
Edit the /etc/mysl/my.cnf file
Comment out the line bind-address = 127.0.0.1
Restart mysqld
I tried creating a SSH tunnel using
ssh -L 3306:localhost:22 <hostip>
Then running my python script to connect via localhost
conn = MySQLdb.connect(host'localhost', port=3306, user='bob', passwd='na', db='test')
However, I receive the following error
(2002, "Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)")
How can I make sure I'm hitting the correct host and not just some problem with the bind?
Try changing "localhost" to "127.0.0.1", it should work as you expect. This behavior is detailed in the manual:
UNIX sockets and named pipes don't
work over a network, so if you specify
a host other than localhost, TCP will
be used, and you can specify an odd
port if you need to (the default port
is 3306):
db=_mysql.connect(host="outhouse", port=3307, passwd="moonpie", db="thangs")
If you really had to, you could
connect to the local host with TCP by
specifying the full host name, or
127.0.0.1.
Does mysqld run on port 22 on the remote? Call me ignorant but I think what you're trying to do is
ssh -n -N -f -L 3306:localhost:3306 remotehost
Then making MySQL connections on local machine will transparently get tunneled over to the target host.
You can't specify localhost as the hostname, as this suggests that MySQLdb should try to use a UNIX socket. Use 127.0.0.1 for the host instead.
If you want to make sure the connection works, you can use the standard mysql client.