I created a tomcat stack instance on google cloud and it comes with mysql 5.5. I can access it through terminal by ssh then enter command line mysql -u username -p. However, I am trying to access the database through mysqlworkbench but I could not get the connection.
So, I guess I need to use connection method "Standard TCP/IP over SSH" and I need to confirm if I have the parameters right.
SSH Hostname: the IP of my instances <br/>
SSH Username: my google account username? this is the one i use to login when setting up the gcloud ssh<br/>
SSH Password: the password for the account<br/>
SSH Key file: ~/.ssh/google_compute_engine<br/>
MySQL Hostname: i put tomcat_rmre which is the hostname for the database when I do "show variables" in the terminal<br/>
MySQL Server Port: the port in "Show variables"<br/>
Username: username of the database<br/>
password: password of the database
When I test connection, I get Lost connection to MySQL server at 'reading initial communication packet', system error: 0
The Tomcat Click to Deploy solution does not use Cloud SQL, it just includes MySQL running on Google Compute Engine.
If you are not able to connect to the MySQL instance remotely via the "Standard (TCP/IP)" connection method it is probably because of one of:
You may have forgotten to open TCP port 3306 in your GCE firewall.
MySQL may not be listening to remote connections. Your my.cnf should contain bind-address = 0.0.0.0 and should not have skip-networking.
Related
I just installed DBeaver on my personal computer and am trying to create a PostgreSQL database.
I entered the following in the Connect to database window:
Host: localhost
Port: 5432
Database: postgres
User: postgres
Those values were all pre-filled defaults, so I left them and clicked the Test Connection... button.
When I click the Test button an error window opens, saying, "Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. Connection refused: connect"
I tried setting my own db name and credentials, but get the same results.
How do I set up a local PostgreSQL database in DBeaver?
DBeaver does not allow to setup a local PostgreSQL server or instance: it allows to connect to an existing server or instance. If the PostgreSQL instance does not exist you should install PostgreSQL binaries and create a new database instance with initdb.
If your operating system is Windows 10 Home, you have to use 192.168.99.100 instead of localhost.
Answer from here - https://www.reddit.com/r/dbeaver/comments/fi8h0q/new_dbeaver_install_how_to_set_up_first/.
Dbeaver is just a client to the server. You need to setup the server itself first.
https://www.postgresql.org/
Download and setup the server then you can connect to it with DBeaver and do what you want to do.
I got the same, and then I remembered that I didn't start postgres with the script
I'm trying to use Robomongo (or Robo 3T) under Mac to control my mongodb in the remote Ubuntu & Nginx server.
Normally, I need to ssh xxx.xx.xx.xx in a terminal with a username and a password to connect to the server. in /etc/nginx/sites-enabled/myweb.io, there is listen 443 ssl.
In Robo 3T, I tried to set up the connection with Use SSH tunnel. I tried the port number 443 or 80. But it gave me an error: Error: Resource temporarily unavailable. Error when starting up SSH session: -13. (Error #35)
Does anyone know how to fix this?
The correct setting is
1) under SSH, check User SSH tunnel, use port 22
2) and under Connection, write 127.0.0.1:27017
I've done few configurations on my Ubuntu 18 Vagrant box in order to successfully connect MongoDB remotely using Robo 3T GUI. I've explained in the following steps.
On Ubuntu server, to open mongo shell run:
$ mongo
Inside mongo shell, type following command to create new a admin user.
> use admin;
> db.createUser({user:"admin", pwd:"password", roles:[{ role: "root", db: "admin" }]});
By default mongodb is configured to allow connections only from localhost(IP 127.0.0.1). We need to allow remote connections from any ip address. The following change should only be done in your development server. Open up etc/mongod.conf file and do the following change.
# network interfaces
net:
port: 27017
bindIp: 0.0.0.0 #default value is 127.0.0.1
Also in the same mongod.conf file uncomment security option and add authorization option as shown below.
security:
authorization: enabled
Save and exit the mongod.conf file and restart mongodb server.
$ sudo servcie mongod restart
Download and install Robo 3T GUI tool.
On Robo 3T GUI, in the connection settings, you need to do few changes as shown on
below screen shots.
Enter mongodb admin database username and password which you have created earlier.
Here, I have entered my Ubuntu 18 Vagrant box ssh credentials.
Save the changes and press connect icon to see if the connection is working fine.
Connect to remote MongoDB using Roto3t
Firstly, we should check the standard URI connection scheme
for mongodb
mongodb://[username:password#]host1[:port1][,...hostN[:portN]]][/[database][?options]]
We make a SSH Connection to the remote MongoDB on Cloudfoundry
in my case
cf ssh -L port_forwarding:HOST_NAME:Port NAME_OF_APP
(1) In the Connection tab in Robo3T we choose
Type: direct connection
Name: choose_any_connection_name
Address: localhost and port is 'port_forwarding' we choose in the SSH connection we made.
(2) in the Authentication tab, we should add database, username, password, and Auth Machanism: SCRAM-SHA-1
(3) in the SSH Tab we will uncheck use SSH tunnel as we made it manually.
Now, if you click test the connection should be successfully done.
Note: If we use Studio 3T it will parse the URI and fill all these fields for us.
I am trying to connect AWS RDS PostgreSql from PgAdmin 3. I followed the below link
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ConnectToPostgreSQLInstance.html
In Security Group, I also added PostgreSQL and All traffic as below
The "publicly accessible" flag was enabled (updated after Mark B's comment)
I got the error from PGAdmin3
Very appreciate for any suggestion
******UPDATE*******
I can connect pgAdminIII to AWS RDS successfully using home wifi, but cannot connect using office wifi.
My concern is:
Was the port 5432 blocked by office wifi?
How can I configure/update the port without impacting to current API?
Note: My current API is working well (CRUD)
Can you can test your connection to a DB instance using common Linux or Windows tools first?
From a Linux or Unix terminal, you can test the connection by typing the following (replace with the endpoint and with the port of your DB instance):
$nc -zv DB-instance-endpoint port
For example, the following shows a sample command and the return value:
$nc -zv postgresql1.c6c8mn7tsdgv0.us-west-2.rds.amazonaws.com 8299
Connection to postgresql1.c6c8mn7tsdgv0.us-west-2.rds.amazonaws.com
8299 port [tcp/vvr-data] succeeded!
Windows users can use Telnet to test the connection to a DB instance. Note that Telnet actions are not supported other than for testing the connection. If a connection is successful, the action returns no message. If a connection is not successful, you receive an error message such as the following:
C:>telnet sg-postgresql1.c6c8mntzhgv0.us-west-2.rds.amazonaws.com
8299
Connecting To sg-postgresql1.c6c8mntzhgv0.us-west-2.rds.amazonaws.com...Could not
open connection to the host, on port 819: Connect failed
If Telnet actions return success, then you are good to go.
If you are trying to access it from a network which is not listed for that port. you need to add inbound rules for those network IPs from AMAZON RDS system
You will also need to set Public accessibility true under Connect & security tab in RDS console.
Read this post.In your security group go to unbound rules and add my ip.
and make sure your database is public.
https://serverfault.com/questions/656079/unable-to-connect-to-public-postgresql-rds-instance
I am running openerp(odoo) application from amazon cloud server using putty and it is ubuntu Headless(NO GUI) server. PostgreSQL is the database used for this application. Right now I am only able to access it in command mode as there is no gui in Putty. In Windows, I have installed pgadmin3. Is it possible to access it from here by configuring?
You can configure your security group to open up the postgres port accessible from your IP address (I would highly recommend the access to be limited that way). After that you can just point your GUI client the external IP address of your instance using the port where the service is running on.
I suggest you to use pgadmin gui tool to access postgres database.
You can set up an SSH tunnel in putty and use that to access the remote database with your local pgadmin3. This is a very good and secure way to do things.
First, in Putty (Connection / SSH / Tunnels) add a source port of your choice, 5000 for example. Then enter localhost:5432 for Destination (providing postgres is running on port 5432 on the server). Press Add and save your session. Next time you open your ssh connection with Putty, the tunnel will be active.
After this, set up a new connection in pgadmin3, Host: localhost and Port: 5000 (and your username and pasword, of course). Now, if the putty session is active, you should be able to connect.
In postgresql.conf file, find a line called
listen_addresses = 'localhost' and change it to '*'
Next in pg_hba.conf add this line in IPV4 local connections,
host all all (Your external ip address in CIDR format) trust
Finally restart the database using this command,sudo service postgresql restart
New to web development. Trying to connect and register new server for pgAdminIII. (using cloud 9 ide)..
I get this error when viewing in the browser..
_PG::CONNECTION BAD _
could not connect to server: Connection refused Is the server running on
"localhost" (::1) and accepting TCP/IP connections on port 5432?
could not connect to server: Connection
refused Is the server running on host "localhost"
(127.0.0.1) and accepting TCP/IP connections on port 5432
PS. trying to access via new user "ubuntu" SUPERUSER created..
How can I fix this?
PPS. On cloud 9's community forum, an employee says..
"Only ports 8080, 8081 and 8082 are open for workspaces so if you want to access the DB externally you'll need to run it on one of these ports. Make sure you can access it with curl from a local terminal and ensure it's listening on 0.0.0.0 not 127.0.0.1, as the latter only allows local connections."
Lastly, their ide comes with postgres installed, all I needed to do, was set it up..
How do I use the above info while trying to register the new server in order to use the gui?
Let me know if I need to include anything else.
Thanks.
You should enable postgresql service by performing sudo service postgresql start.
After enabling, you can access the console using sudo sudo -u postgres psql and CREATE ROLE ubuntu LOGIN REPLICATION CREATEDB CREATEROLE SUPERUSER; to allow Rails take advantage of your database.
Rails also complains about template read error after creating ubuntu role.
To fix the template error, read up on this.
You should get PostgreSQL server up and running in no time. Happy coding!
Edit:
You should only use localhost for local and system resources (i.e. psql, etc.) while 0.0.0.0 is for everything else like running Rails or Apache server.